WO2007125587A1 - Additif pour huile moteur, huile moteur et procede de purification de gaz d'echappement - Google Patents

Additif pour huile moteur, huile moteur et procede de purification de gaz d'echappement Download PDF

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Publication number
WO2007125587A1
WO2007125587A1 PCT/JP2006/308901 JP2006308901W WO2007125587A1 WO 2007125587 A1 WO2007125587 A1 WO 2007125587A1 JP 2006308901 W JP2006308901 W JP 2006308901W WO 2007125587 A1 WO2007125587 A1 WO 2007125587A1
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WIPO (PCT)
Prior art keywords
group
exhaust gas
engine oil
additive
metal
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Ceased
Application number
PCT/JP2006/308901
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English (en)
Japanese (ja)
Inventor
Kazushige Ohno
Tomokazu Oya
Hiroshi Sasaki
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Ibiden Co Ltd
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Ibiden Co Ltd
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Priority to JP2008513034A priority Critical patent/JPWO2007125587A1/ja
Priority to PCT/JP2006/308901 priority patent/WO2007125587A1/fr
Priority to EP06114706A priority patent/EP1849853B1/fr
Publication of WO2007125587A1 publication Critical patent/WO2007125587A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/12—Reaction products
    • C10M159/18—Complexes with metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/025—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with condensed rings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/142—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings polycarboxylic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/09—Complexes with metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/02—Groups 1 or 11
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/06—Groups 3 or 13
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/08—Groups 4 or 14
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/10—Groups 5 or 15
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/12—Groups 6 or 16
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/14—Group 7
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/16—Groups 8, 9, or 10
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines

Definitions

  • the present invention relates to an engine oil as a catalyst component for purifying exhaust gas from which the power of an internal combustion engine such as a diesel engine is also discharged, particularly for assisting combustion of particulate matter (hereinafter also referred to as PM).
  • the present invention relates to an engine oil additive added to the engine oil, an engine oil containing the additive, and an exhaust gas purification method implemented for the purpose of purifying harmful components in the exhaust gas.
  • exhaust gas purifying filters there are those in which an exhaust gas purifying catalyst such as an oxide catalyst or a noble metal catalyst is supported.
  • an exhaust gas purifying catalyst such as an oxide catalyst or a noble metal catalyst
  • harmful gas components such as CO, NO and HC in the exhaust gas can be purified (oxidized) by the action of the catalyst, and PM combustion The temperature can be lowered and PM can be burned efficiently.
  • Figs. 6 (a) to 6 (d) show the above-mentioned Ha
  • the exhaust gas purifying filter that has the structure of the Her cam structure is installed in the pipe connected to the engine. It is the conceptual diagram which showed typically the various states which generate
  • FIG. 1 is a schematic view showing a state in which an exhaust gas purification catalyst is supported on an exhaust gas purification filter such as a her cam structure body, and (b) is a view in which PM or the like covers the filter.
  • the exhaust gas purification catalyst 61 is supported on the partition wall portion 60 of the exhaust gas purification filter composed of an unused Hercam structure, so that the exhaust gas purification can be performed. (See Fig. 6 (a)).
  • the exhaust gas purification catalyst 61 is also carried inside the wall, but in this figure, the catalyst inside the wall is omitted.
  • the collected PM 62 must be periodically burned and removed (regeneration processing of the filter), and a post-injection method is mainly used for such processing.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2002-303121
  • Patent Document 2 Japanese Patent Laid-Open No. 2000-319679
  • ash includes those caused by wear of the engine's peristaltic parts, sulfate in fuel, and the like.
  • Patent Document 1 switches accumulated ash together with exhaust gas to the outside of the filter by switching the inflow direction and the outflow direction of the exhaust gas to the exhaust gas purification filter. It is described that it can be discharged.
  • the structure of the piping for introducing the exhaust gas into the exhaust gas purification filter becomes complicated, and the volume of the casing in which the filter is installed increases, so that the installation space is limited. Considering the installation of a casing in the open space is not preferable. In addition, a control mechanism for switching the direction is required, leading to an increase in cost. In addition, the ash deposited on the wall had a problem that it could hardly be discharged by the pressure of exhaust gas with high viscosity.
  • the inventor of the present application is an engine oil additive comprising a compound containing a metal element, and the metal oxide obtained by oxidizing the metal element is discharged from the internal combustion engine.
  • engine oil with an additive for engine oil composed of a compound that exhibits a catalytic action to promote combustion of PM contained in the exhaust gas is used, the metal oxide is burned into the fuel. It is later introduced into the exhaust gas purification filter together with the exhaust gas, and exists as a catalyst for promoting the combustion of PM on the filter in particular, and the combustion of PM by utilizing the catalytic action of the existing metal oxides.
  • the engine oil additive of the present invention was completed.
  • the engine oil containing such additives and the ash deposited by the above method on the exhaust gas filter even after ash deposition by the above method and Z or its has also been completed for an exhaust gas purification method in which exhaust gas is purified by bringing the catalyst into contact with PM.
  • the engine oil additive according to the first aspect of the present invention is an engine oil additive comprising a compound containing a metal element, and is a metal oxide obtained by oxidizing the metal element.
  • Power Internal combustion engine power Emission It exhibits a catalytic action that promotes combustion of particulate matter contained in exhaust gas.
  • the additive is an engine oil additive used for supplying the metal oxide in a filter of an exhaust gas purification device connected to a combustion chamber of an internal combustion engine.
  • the engine oil additive according to the second aspect of the present invention is an engine oil additive comprising a compound containing a metal element, the group consisting of the fourth period of the periodic table, the lanthanoid and the fourth group element. It is characterized by comprising a metal complex containing at least one metal element selected from the group consisting of
  • M is one selected from the group consisting of Ce, V, Cr, Mn, Ni, Co, Cu, Fe, Pb and Sn
  • p and q are 2- to 8-dentate metal complexes. Represents an integer determined to be coordinated, and p and q may be 0.
  • R ⁇ R 2 and R 3 are 2 or more, each of R 2 and R 3 is the same R 1 and R 2 represent an alkyl group having 1 to 6 carbon atoms, and R 3 represents an alkyl group having 1 to 6 carbon atoms and Z or an alkoxy group having 1 to 16 carbon atoms.
  • a metal complex represented by the following formula:
  • RR 2 in the general formula (1) is a group consisting of a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a tert-butyl group, an n-pentyl group, and a 2-ethoxyethyl group.
  • R 3 is selected from the group consisting of methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, tert-butyl group, n-pentyl group and 2-ethoyl group.
  • Chichetyl group group power at least l selected, and z or methoxy group, ethoxy group, n-propoxy group, iso-propoxy group, n-butoxy group, tert-butoxy group, 2-ethylhexyloxy group And at least one selected from the group consisting of lauryloxy groups.
  • the engine oil additive of the first or second aspect of the present invention has the following formula (2):
  • R 4 to R 9 represent hydrogen or an alkyl group, and M is a group force selected from Ce, V, Cr, Mn, Ni, Co, Cu, Fe, Pb, and Sn force
  • m is 1 or 2.
  • the engine oil additive of the first or second aspect of the present invention is represented by the following formula (3):
  • R to R represent hydrogen or an alkyl group
  • M is a kind selected from the group force of Ce, V, Cr, Mn, Ni, Co, Cu, Fe, Pb and Sn force, n is 1 or 2.
  • the engine oil additive of the first or second aspect of the present invention has the following formula (4):
  • R lb to R represent hydrogen or an alkyl group, is absent or is hydrogen, and M is a group consisting of Ce, V, Cr, Mn, Ni, Co, Cu, Fe, Pb and Sn. It is desirable that it is a metal complex represented by 1).
  • the metal element is preferably cerium.
  • the compound containing the metal element is a metal complex having a trivalent or tetravalent cerium ion as a central metal. desirable.
  • the engine oil of the third aspect of the present invention is characterized in that an additive for engine oil consisting of! / Of the compound containing the metal element is added.
  • the amount of the additive of the engine oil additive is 1 to 10% by weight.
  • An exhaust gas purification method is an exhaust gas purification method using an engine oil additive that also has a compound power including a metal element, An engine in which the metal oxide formed by oxidizing the metal element is supplemented with an additive for engine oil that exhibits a catalytic action that promotes combustion of particulate matter contained in exhaust gas discharged from the internal combustion engine. Using oil,
  • the metal oxide is supplied into the filter of the exhaust gas purification apparatus connected to the combustion chamber of the internal combustion engine, and the catalyst of the supplied metal oxide It is characterized by purifying exhaust gas by utilizing the action.
  • the filter of the exhaust gas purification device includes a plurality of cells separated by cell walls formed along the longitudinal direction, and the! It is desirable that the structure be made of a her cam structure that is sealed with a sealing material and configured to allow exhaust gas to pass through the cell wall.
  • the additive for engine oil having a compound power containing the metal element according to the first aspect of the present invention can be dissolved in engine oil, and then ashed on the exhaust gas purification filter after passing through the combustion chamber of the engine.
  • the regeneration rate of the exhaust gas purification filter indicates how close to the weight immediately after the previous regeneration due to the weight force regeneration processing of the exhaust gas purification filter increased by the accumulation of PM.
  • the weight power of the exhaust gas purification filter by the regeneration treatment The closer the weight of the exhaust gas purification filter immediately after the previous regeneration is, the higher the regeneration rate becomes.
  • the additive for engine oil containing a metal element according to the second aspect of the present invention is a metal complex, it can be dissolved in engine oil and purified through exhaust gas after passing through the combustion chamber of the engine.
  • ash is deposited on the filter, it is present as a metal oxide in and on the ash and on the ash and can act as a catalyst to promote PM combustion.
  • the engine oil of the third aspect of the invention contains the additive for engine oil of the first or second aspect of the invention comprising a compound containing a metal element.
  • metal oxides can be present in the ash and on Z or ash, and the existing metal oxides can be removed. It can act as a catalyst to promote PM combustion. Further, even after PM has accumulated for a long time, PM can come into contact with the catalyst derived from engine oil, and PM combustion (filter regeneration) can be assisted. As a result, the regeneration rate of the filter can be improved.
  • the ash is deposited on the exhaust gas purification filter after passing through the combustion chamber of the engine. Then, metal oxides can be present in and on the ash or on the ash, and the existing metal oxide can serve as a catalyst for promoting PM combustion.
  • the engine oil additive according to the first aspect of the present invention is an engine oil additive comprising a compound containing a metal element, and is a metal oxide physical force internal combustion machine in which the metal element is oxidized. It has a catalytic action that promotes combustion of particulate matter contained in exhaust gas discharged from Seki.
  • the engine oil additive according to the second aspect of the present invention is an engine oil additive comprising a compound containing a metal element, the group consisting of the fourth period of the periodic table, the lanthanoid and the fourth group element. It is characterized by comprising a metal complex containing at least one metal element selected from the group consisting of
  • the engine oil additive of the present invention is used after being added to the engine oil.
  • the engine oil is one of a mineral oil, a chemically synthesized oil, and a partially synthetic oil that serves as a base oil.
  • Additives such as additives, antiwear agents, dispersants, viscosity index improvers, pour point depressants, and antioxidants are added in a total of 15 to 30% by weight. Is commercially available.
  • metallic detergents are often used as detergents, for example, neutral salts that are alkaline earth metal salts of organic acids such as fatty acids having 8 to 22 carbon atoms, or alkalis.
  • neutral salts that are alkaline earth metal salts of organic acids such as fatty acids having 8 to 22 carbon atoms, or alkalis.
  • examples include overbased compounds containing carbonates of earth metal salts (especially calcium and magnesium salts), and usually 0.5 to about LO wt% is added.
  • the above-described metal components such as calcium and magnesium are components of ash deposited on the exhaust gas purification filter.
  • the engine oil additive is used as an additive for engine oil as a kind of additive added to engine oil.
  • the power that can be dissolved in the base oil Desirably, it can be dispersed in the base oil in a colloid-like form.
  • the engine oil additive is preferably composed of a compound containing a metal element whose oxide functions as a catalyst for promoting PM combustion.
  • the metal oxide is contained in a filter of an exhaust gas purification device connected to a combustion chamber of an internal combustion engine. Hope it can be used to supply.
  • the type of metal element is not particularly limited, but it is desirable that the metal element be selected as a group power consisting of the fourth period of the periodic table, the lanthanoid and the fourth group elemental power.
  • desirable metal elements include Ce, V, Cr, Mn, Ni, Co, Cu, Fe, Pb, and Sn.
  • the engine oil additive may contain two or more different metal elements among the metal elements in the compound. Further, an additive in which two or more compounds containing different metal elements among the above metal elements are mixed may be used.
  • the two or more different metal elements when two or more different metal elements are contained in the engine oil additive, the two or more different metal elements function as a catalyst for promoting the combustion of PM by the composite oxide. Two or more metal elements may be used.
  • the type of the compound containing the metal element is not particularly limited. However, from the viewpoint of availability and stability, I ⁇ OH (wherein the alkyl group having 1 to 6 carbon atoms is used as a ligand).
  • R 2 COCH COR 3 wherein R 2 is an alkyl group having 1 to 6 carbon atoms, R 3 is
  • a complex having a diketone represented by an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 16 carbon atoms is preferably used. More preferably, the complex is a metal complex having a diketone as a ligand. This is because a complex having a diketone as a ligand can be made into a metal complex soluble in engine oil.
  • a metal complex means an organometallic complex, a complex compound containing a metal element, a coordination compound containing a metal element, a metal complex salt (a salt containing a metal element and a complex ion), a metal Clusters, cluster complexes, metal cluster complexes, and compounds containing them are collectively referred to.
  • M is one selected from the group consisting of Ce, V, Cr, Mn, Ni, Co, Cu, Fe, Pb and Sn, and p and q are 2- to 8-dentate metal complexes. Represents an integer determined to be coordinated, and p and q may be 0.
  • R 1 and R 2 represent an alkyl group having 1 to 6 carbon atoms.
  • R 3 represents an alkyl group having 1 to 6 carbon atoms and Z or an alkoxy group having 1 to 16 carbon atoms.
  • RR 2 in the above general formula (1) is also selected from a group force consisting of a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a tert-butyl group, an n-pentyl group, and a 2-ethoxyethyl group.
  • R 3 is at least one selected from the group consisting of a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a tert-butyl group, an n-pentyl group, and a 2-ethoxytyl group.
  • these metal complexes include, but are not limited to, for example, Ce (O-iso-C H), Ce (0—iso—CH), Ce (0—tert—CH). ), Ce (OCH CH
  • H -CO-CH CO-CH
  • Ni (CH— CO— CH CO— CH)
  • R 4 to R 9 represent hydrogen or an alkyl group, and M is a group force selected from Ce, V, Cr, Mn, Ni, Co, Cu, Fe, Pb, and Sn force
  • M is 1 or 2.
  • 1,8-Dinaphthadiolates represented by the following formula are also preferably used.
  • R to R represent hydrogen or an alkyl group
  • M represents a group force selected from Ce, V, Cr, Mn, Ni, Co, Cu, Fe, Pb, and Sn force
  • n is 1 or 2.
  • 1,8-naphthalenedicarboxylates represented by the following formula are also preferably used.
  • This complex salt with a ligand having a naphthalene nucleus can be used for engine oil. This is because a soluble metal complex can be obtained.
  • R lb to R b represent hydrogen or an alkyl group
  • R 26 represents H or is absent
  • M represents Ce, V , Cr, Mn, Ni, Co, Cu, Fe, Pb and Sn are also selected).
  • Such a complex salt is a compound containing a metal element and can be made into a metal complex soluble in engine oil.
  • a compound containing cerium is widely used as a catalyst for promoting PM combustion, and functions as a catalyst for promoting PM combustion by being deposited on an exhaust gas purification filter.
  • Cerium compounds are known to work as exhaust gas purification catalysts, especially due to their oxygen storage capacity. Specifically, oxygen is released by the reaction of 2CeO ⁇ CeO + 1/20,
  • the reverse reaction serves to occlude oxygen.
  • the oxygen necessary for the combustion is supplied to accelerate the combustion of PM, so that the combustion temperature can be lowered and the energy required for filter regeneration can be reduced. [0061] Therefore, it is desirable to use the additive agent in a form in which the cerium compound can be dissolved or dispersed in the base oil.
  • the metal complex having a trivalent cerium ion is a metal represented by the above general formula (1) or (4). Mention may be made of complexes. Examples of the metal complex having a tetravalent cerium ion include metal complexes represented by the above general formulas (1) to (3).
  • these compounds containing metal elements may be used alone or in combination of any two or more. Moreover, partial hydrolysates of these compounds can also be used.
  • the additive comprising the compound containing the metal element of the first and second inventions is a complex salt soluble in an organic solvent having a hydrophobic ligand, it can be dissolved in engine oil. It is possible, and when the engine oil of the third aspect of the present invention to which this is added is used, the additive component can be easily introduced into the engine.
  • the amount of the additive added to the engine oil is preferably 1 to 10% by weight. If the amount is less than 1%, the amount of PM that can be contacted with the catalyst is small, so the effect of promoting the combustion of PM is small. If added over 10%, the fluidity of the oil may deteriorate.
  • the exhaust gas purification method using the engine oil additive will be described in detail later.
  • 1S The metal element contained in the additive in the engine oil enters the combustion chamber of the engine, It is oxidized with combustion to become a metal oxide and introduced into the exhaust gas filter together with PM in the exhaust gas.
  • the metal oxide functions as a catalyst for promoting PM combustion.
  • the metal oxide When present on the filter as the metal oxide ash after filter regeneration, the metal oxide functions as an exhaust gas purifying catalyst on the filter and acts as a catalyst for promoting PM combustion.
  • the exhaust gas purification method of the fourth aspect of the present invention is an exhaust gas purification method using an engine oil additive that also has a compound power including a metal element,
  • An engine in which the metal oxide formed by oxidizing the metal element is supplemented with an additive for engine oil that exhibits a catalytic action that promotes combustion of particulate matter contained in exhaust gas discharged from the internal combustion engine.
  • the metal oxide is supplied into the filter of the exhaust gas purification apparatus connected to the combustion chamber of the internal combustion engine, and the catalyst of the supplied metal oxide It is characterized by purifying exhaust gas by utilizing the action.
  • a compound containing a metal element is introduced into a combustion chamber of an internal combustion engine by an engine wheel to which a compound containing a metal element is added, and the fuel is burned.
  • the metal oxide is deposited in the filter of the exhaust gas purifier connected to the combustion chamber of the internal combustion engine.
  • a diesel engine is used as the internal combustion engine, and engine oil to which a cerium compound is added as a compound containing a metal element is used.
  • FIG. 1 is a diagram schematically showing a part of a diesel engine and an exhaust gas purifying device connected to the diesel engine.
  • FIG. 6 is a conceptual diagram schematically showing various states that occur in the partition wall of the body.
  • the filter of the exhaust gas purifier is not particularly limited, but in FIG. 1, a collective type hard structure 40 is provided as a filter.
  • the collective type hard cam structure will be described in detail later.
  • the intake valve 82 In driving the diesel engine 81, first, the intake valve 82 is opened, and air is sucked into the combustion chamber 93 from the intake port 83 while the piston 89 descends from the top dead center. Subsequently, while the intake valve 82 is closed and the piston 89 rises from the bottom dead center, the sucked air is compressed and becomes high temperature.
  • crankshaft 91 rotates twice in one cycle, thereby obtaining power.
  • the engine oil 92 prevents the piston 89 and the outer wall portion 87, both of which are metal, from contacting each other between the piston 89 and the outer wall portion 87 of the engine to be worn and overheated. Force that fills the gap between the outer wall 87 and the outer wall 87 and prevents the compressed gas and explosion gas from leaking, part of which leaks into the combustion chamber through the gap between the piston 89 and the outer wall 87 And burn with fuel.
  • Additives added in engine oil 92 also participate in combustion at this time, and flammable additives are burned out, but nonflammable additives such as metallic detergents do not burn and are exhausted together with the exhaust gas. It is discharged from 85.
  • the exhaust port 85 and the like of the diesel engine 81 are connected to the introduction pipe 24 of the exhaust gas purification device 200, and a collective type hard cam structure is provided in the metal casing 23 of the exhaust gas purification device 200.
  • 40 is installed to be a flow path for exhaust gas, and an exhaust pipe 25 connected to the outside is connected to the other end of the exhaust gas purification apparatus 200.
  • the arrows indicate the flow of exhaust gas.
  • the exhaust gas generated in the diesel engine 81 is introduced into the filter (collective type hard cam structure 40) through the exhaust port 85 and the introduction pipe 24, and PM in the exhaust gas is collected into the collective type hard cam. Collected in structure 40.
  • nonflammable additives such as metallic detergents and cerium oxide discharged from the exhaust port 85 together with the exhaust gas are also collected in the collective type hard structure 40 together with PM.
  • the collected PM 72 must be periodically burned and removed (regeneration processing of the filter), and a post-injection method is mainly used for such processing.
  • cerium oxide 73 remains together with ash 63 as shown in FIG. 2 (c).
  • the type of filter of the exhaust gas purifier is not particularly limited.
  • a plurality of cells separated by cell walls are formed along the longitudinal direction.
  • An example is a two-cam structure in which one end or the other end of the cell is sealed with a sealing material so that exhaust gas passes through the cell wall.
  • Her cam structure a plurality of cells separated by cell walls are formed along the longitudinal direction, and one end of each of the cells is sealed with a sealing material.
  • a ceramic block is formed by combining multiple physical strength sealing material layers (adhesive material layers).
  • a hard cam structure (hereinafter also referred to as a combined type hard cam structure) in which a sealing material layer (coat layer) is formed around the Mick block and a plurality of cells separated by cell walls in the longitudinal direction.
  • a large honeycomb structure (hereinafter also referred to as an integral honeycomb structure) made of a single hard cam fired body formed along one of the above cells! Divided.
  • Fig. 3 is a perspective view schematically showing an example of a collective her cam structure
  • Fig. 4 (a) is a her cam firing that constitutes the no-cam structure shown in Fig. 3.
  • 2 is a perspective view of the body
  • (b) is a cross-sectional view taken along the line BB of the her cam fired body shown in (a).
  • a plurality of double cam fired bodies 50 having the same strength as silicon carbide ceramics are combined through a sealing material layer (adhesive layer) 41.
  • a cylindrical ceramic block 43 is formed, and a sealing material layer (coat layer) 42 is formed around the ceramic block 43.
  • the shape of the ceramic block is a cylindrical shape.
  • the ceramic block is limited to a cylindrical shape as long as it is columnar. For example, it may be of any shape such as an elliptical columnar shape or a prismatic shape.
  • the her cam fired body 50 is a her cam fired body in which a plurality of cells 51 are arranged in parallel in the longitudinal direction with a cell wall 53 therebetween.
  • the ends of the cells 51 are sealed with the sealing material 52, and the cell walls 53 separating the cells 51 function as a filter. That is, as shown in FIG. 4B, in the cell 51 formed in the her cam fired body 50, either the inlet side or the outlet side end of the exhaust gas is sealed with the sealing material 52.
  • the exhaust gas flowing into one cell 51 must flow through the cell wall 53 separating the cells 51 and then flow out from the other cells 51.
  • the collective Hercam structure 40 mainly has a porous ceramic force, and examples of the material include nitride ceramics such as aluminum nitride, silicon nitride, boron nitride, and titanium nitride, silicon carbide, and carbonized carbide. Examples thereof include carbide ceramics such as zirconium, titanium carbide, tantalum carbide, and tungsten carbide, and oxide ceramics such as alumina, zirconia, cordierite, mullite, silica, and aluminum titanate.
  • the hard cam fired body may be formed with a composite force of silicon and silicon carbide. Silicon and carbonization When using a complex with silicon, it is desirable to add silicon so that the total amount of silicon is 0 to 45% by weight.
  • the material for the above-mentioned her cam fired body is a silicon carbide ceramic that has high heat resistance, excellent mechanical properties, and high thermal conductivity. Is desirable. Silicon carbide ceramics are those containing 60% by weight or more of silicon carbide.
  • the lower limit of the thickness of the cell wall 53 is preferably 0.1 mm, and the upper limit is preferably 0.4 mm.
  • the thickness of the cell wall 53 is less than 0.1 mm, the strength of the cell wall 53 may be too low and damage such as cracks may occur.On the other hand, if the thickness of the cell wall 53 exceeds 0.4 mm, The aperture ratio cannot be kept high, and as a result, the pressure loss may be too great.
  • the porosity of the collective type hard cam structure 40 is preferably 40 to 60%.
  • the porosity is less than 40%, the pressure loss may increase. On the other hand, if the porosity exceeds 60%, the strength may decrease.
  • the porosity can be measured by a conventionally known method such as a mercury intrusion method using a mercury porosimeter, an Archimedes method, or a measurement using a scanning electron microscope (SEM).
  • a mercury intrusion method using a mercury porosimeter such as a mercury intrusion method using a mercury porosimeter, an Archimedes method, or a measurement using a scanning electron microscope (SEM).
  • SEM scanning electron microscope
  • the average pore diameter of the aggregate type hard cam structure 40 is not particularly limited, but the desirable lower limit is 1
  • / z m with a desirable upper limit of 50 m.
  • a more desirable lower limit is 5 m and a more desirable upper limit is 30 ⁇ m.
  • the pressure loss increases.
  • the average pore diameter exceeds 50 m, PM tends to pass through the pores, and the PM cannot be sufficiently collected. PM collection efficiency may decrease.
  • the sealing material 52 and the cell wall 53 for sealing the end portion of the collective hard cam structure 40 have the same porous ceramic force.
  • the adhesion strength between the two can be increased, and the thermal expansion coefficient of the cell wall 53 and the thermal expansion of the sealing material 52 can be adjusted by adjusting the porosity of the sealing material 52 in the same manner as the cell wall 53.
  • the gap between the sealing material 52 and the cell wall 53 due to the thermal stress during manufacturing or use, or the part that contacts the sealing material 52 or the sealing material 52 It is possible to prevent cracks from occurring in the cell wall 53.
  • the length of the sealing material 52 is not particularly limited.
  • the desirable lower limit is lmm
  • the desirable upper limit is 20mm.
  • the length of the sealing material is less than 1 mm, the end of the cell may not be reliably sealed. On the other hand, if the length exceeds 20 mm, the effective filtration area of the Hercam structure may be reduced. They are
  • the sealing material layer (adhesive layer) 41 is formed between the hard cam fired bodies 50 and has a function of preventing exhaust gas from leaking, It functions as an adhesive that binds together a plurality of two-cam fired bodies 50.
  • a sealing material layer (coat layer) 42 is formed on the outer peripheral surface of the ceramic block 43 and has a collective type hard cam structure.
  • the adhesive layer 41 and the coat layer 42 may have the same material force or may be made of different materials. Further, when the adhesive layer 41 and the coat layer 42 have the same material strength, the blending ratio of the materials may be the same or different. Further, it may be dense or porous.
  • the material constituting the adhesive layer 41 and the coat layer 42 is not particularly limited, and examples thereof include those composed of an inorganic binder, an organic binder, inorganic fibers, and Z or inorganic particles. .
  • Examples of the inorganic binder include silica sol and alumina sol. These may be used alone or in combination of two or more. Among the inorganic binders, silica sol is desirable.
  • organic binder examples include polybutyl alcohol, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, and the like. These may be used alone or in combination of two or more. Among the above organic binders, carboxymethylcellulose is desirable!
  • Examples of the inorganic fibers include alumina, silica, silica alumina, glass, and titanium.
  • examples thereof include ceramic fibers such as potassium acid and aluminum borate, and whiskers such as alumina, silica, zirconia, titanium, ceria, mullite, and carbide carbide. These may be used alone or in combination of two or more.
  • alumina fiber is desirable.
  • Examples of the inorganic particles include carbides and nitrides. Specifically,
  • Inorganic powders such as silicon carbide, silicon nitride, and boron nitride can be used. These may be used alone or in combination of two or more. Among the above inorganic particles, silicon carbide having excellent thermal conductivity is desirable.
  • the paste used for forming the sealing material layer may have pores such as nolanes, spherical acrylic particles, graphite, etc., which are fine hollow spheres containing oxide-based ceramic as necessary. You can add an agent.
  • the balloon is not particularly limited, and examples thereof include an alumina balloon, a glass micro balloon, a shirasu balloon, a fly ash balloon (FA balloon), and a mullite balloon. Of these, alumina balloons are desirable.
  • a catalyst is supported on the aggregated hard structure, and examples of the catalyst include noble metals such as platinum, noradium, and rhodium, alkali metals, and alkaline earths. Examples include metals and oxides, or combinations thereof.
  • oxide catalysts CeO, ZrO, FeO, FeO, CuO, CuO, MnO, M
  • composition formula AB n CO where A is La, Nd, Sm, Eu, Gd or Y, and ⁇ is an alkali metal or alkaline earth metal
  • C may be a complex oxide represented by Mn, Co, Fe or Ni).
  • the catalyst when the catalyst is attached to the aggregated hard structure, it is desirable that the catalyst is attached after the surface is previously coated with a catalyst support layer such as alumina. As a result, the specific surface area can be increased, the degree of dispersion of the catalyst can be increased, and the number of reaction sites of the catalyst can be increased. Moreover, sintering of the catalyst metal can be prevented by the catalyst support layer.
  • the catalyst-carrying layer include oxide ceramics such as alumina, titer, zirconium, and silica.
  • the present invention can be used even when the catalyst is not previously supported on the Hercam structure, but it is more preferable that the catalyst is supported. If the catalyst is not supported beforehand, the combustion temperature becomes high and the combustion efficiency deteriorates because the amount of catalyst is insufficient when PM is burned before a certain amount of catalyst derived from engine oil is deposited. Because
  • extrusion molding is performed using a raw material paste mainly composed of ceramic as described above.
  • the raw material paste is not particularly limited, but it is desirable to have a porosity force S of 40 to 60% of the Hercum fired body after production. The thing which added the dispersion medium liquid etc. can be mentioned.
  • the particle size of the ceramic powder is not particularly limited, but it is preferable that the ceramic powder has less shrinkage in the subsequent firing step.
  • a combination of 5 to 65 parts by weight of powder having an average particle diameter of about ⁇ 1.0 m is preferred.
  • the ceramic powder may be subjected to an acid treatment.
  • the binder is not particularly limited, and examples thereof include methyl cellulose, carboxymethyl cellulose, hydroxyethinolecellulose, polyethylene glycol, phenolic resin, and epoxy resin.
  • the blending amount of the binder is desirably about 1 to 15 parts by weight with respect to 100 parts by weight of the ceramic powder.
  • the dispersion medium liquid is not particularly limited, and examples thereof include organic solvents such as benzene, alcohols such as methanol, and water.
  • the dispersion medium liquid is blended in an appropriate amount so that the viscosity of the raw material paste is within a certain range.
  • a molding aid may be added to the raw material paste as necessary.
  • the molding aid is not particularly limited, and examples thereof include ethylene glycol, dextrin, fatty acid, fatty acid sarcophagus, and polyvinyl alcohol.
  • the raw material paste may contain a pore-forming agent such as balloons that are fine hollow spheres containing oxide-based ceramics, spherical acrylic particles, and graphite as necessary. .
  • the balloon is not particularly limited, and examples thereof include an alumina balloon, a glass micro balloon, a shirasu balloon, a fly ash balloon (FA balloon), and a mullite balloon. Of these, alumina balloons are desirable.
  • the ceramic molded body is dried using a microwave dryer, hot air dryer, dielectric dryer, vacuum dryer, vacuum dryer, freeze dryer, or the like to obtain a ceramic dried body.
  • a predetermined amount of a sealing material paste as a sealing material is filled in the end of the inlet side cell group on the outlet side and the end of the outlet side cell group on the inlet side, and the cells are sealed.
  • the above-mentioned encapsulant paste is not particularly limited, but it is desirable that the encapsulant produced through a subsequent process has a porosity of 30 to 75%. Can be used.
  • the length of the sealing material formed through the subsequent step can be adjusted by adjusting the amount of paste to be filled.
  • the ceramic dried body filled with the sealing material paste is degreased (for example, 200 to 500 ° C) and fired (for example, 1400 to 2300 ° C) under predetermined conditions.
  • the conditions for degreasing and firing the ceramic dried body the conditions conventionally used for producing a filter made of a porous ceramic can be applied.
  • an adhesive paste to be the adhesive layer 41 is applied with a uniform thickness to form an adhesive paste layer, and the adhesive paste layer is formed on the adhesive paste layer. Then, the process of sequentially stacking the other honeycomb fired bodies 50 is repeated, and an aggregate of honeycomb fired bodies having a predetermined size is obtained. Is made.
  • a gap holding material is affixed on the two-cam fired body 50, and a plurality of her cam fired bodies 50 are attached via the gap holding material. There is also a method of injecting an adhesive paste into the gaps between the honeycomb fired bodies 50 after producing an aggregate by combining them.
  • the assembly of the her cam fired bodies is heated to dry and solidify the adhesive paste layer to form an adhesive layer 41.
  • the aggregate of honeycomb fired bodies to which a plurality of her cam fired bodies 50 are bonded via the adhesive layer 41 is cut to produce a cylindrical ceramic block 43. .
  • sealing material layer 42 on the outer periphery of the ceramic block 43 using the sealing material paste, a plurality of Hercam fired bodies 50 are bonded to each other via the adhesive material layer 41.
  • a collective hard cam structure 40 in which the sealing material layer 42 is provided on the outer periphery of the ceramic block 43 can be manufactured.
  • the catalyst is supported on the Hercam structure as necessary.
  • the catalyst may be supported on the honeycomb fired body before producing the aggregate.
  • alumina film having a high specific surface area In the case of supporting a catalyst, it is desirable to form an alumina film having a high specific surface area on the surface of the Hercam structure and to apply a promoter such as platinum and a catalyst such as platinum to the surface of the alumina film.
  • a two-cam structure is impregnated with a solution of a metal compound containing aluminum such as Al (NO).
  • Examples of the method for imparting the cocatalyst include rare earth elements such as Ce (NO).
  • a method of impregnating a Hercom structure with a metal compound solution and heating it may be used.
  • the catalyst for example, dinitrodiammine platinum nitrate solution ([Pt (NH)) (NO)] HNO, platinum concentration (4.53% by weight) etc. is impregnated into the hard cam structure and heated.
  • the catalyst may be applied by a method in which a catalyst is applied to the alumina particles in advance, and the solution containing the alumina powder to which the catalyst is applied is impregnated into the Hercam structure and heated.
  • the oxide film may be supported without forming the alumina film.
  • the oxides include metal oxides such as CeO, ZrO, FeO, FeO, CuO, CuO, MnO, and MnO.
  • Compositional formula AB CO (wherein A is La, Nd, Sm, Eu, Gd or Y, ⁇ is an alkali metal or alkaline earth metal, and C is Mn, Co, Fe or Ni) And composite acid compounds. These may be used alone or in combination of two or more.
  • the integral honeycomb structure also has a force of a integrally manufactured nose-cam structure in which the entire honeycomb structure is not provided with an adhesive or the like. Therefore, this integral type hard cam structure can be considered as a honeycomb structure comprising a single honeycomb fired body constituting the integrated honeycomb structure.
  • the size thereof is the same as that of the collective type hard structure, and the shape thereof is a shape required for the honeycomb structure, that is, a columnar shape, an elliptical columnar shape, or the like.
  • the structure, required characteristics, and the like are substantially the same as those of the above-described aggregated hard cam structure, and the manufacturing method is also substantially the same as the method of manufacturing the her cam fired body.
  • a sealing material layer formed later on the sintered body may be provided around it.
  • the collective or integral type hard cam structure is usually installed in a cylindrical metal casing.
  • Examples of the material of the metal casing include metals such as stainless steel and iron.
  • the shape of the metal casing may be an integral cylindrical body, or a cylindrical body that can be divided into two or more divided bodies (for example, a clamshell type metal casing). It may be.
  • 1,8-Naphthalenedicarboxylic acid hereinafter, also referred to as 1,8-NDCA cerium (IV) (hereinafter referred to as Additive 1) and commercial engine oil (base oil: commercial natural mineral oil (baraffin) Mineral oil) Viscosity 120mm 2 Zs'40 ° C) 100 parts by weight was added to 1 part by weight.
  • base oil commercial natural mineral oil (baraffin) Mineral oil
  • the generated shaped body was dried using a microwave dryer or the like to form a ceramic dried body, and then a sealing material paste having the same composition as that of the generated shaped body was filled in a predetermined cell.
  • the porosity is 42%
  • the average pore size Is 11 m the size is 34.3 mm X 34.3 mm X 150 mm
  • the number of cells 51 (cell density) is 31 Zcm 2 (200 Zin 2 )
  • the thickness of the cell wall 53 is 0.40 mm.
  • a hard cam fired body 50 made of a silicon sintered body was produced.
  • silica monoalumina fino as an inorganic fiber (average fiber length 100 m, average fiber diameter 10 ⁇ ⁇ ) 23.3% by weight, and silicon carbide powder having an average particle diameter 0.3 m as inorganic particles 30 . 2% by weight, silica sol as an inorganic Roh inductor (content of SiO in the sol: 30 weight 0/0) 7 weight 0/0, Yes
  • a sealing material paste was prepared by mixing and kneading 0.5% by weight of carboxymethyl cellulose and 39% by weight of water as a machine binder.
  • a sealing material paste layer having a thickness of 0.2 mm was formed on the outer periphery of the ceramic block 43 using the sealing material paste. Then, this sealing material paste layer was dried at 120 ° C. to produce a column-shaped collective hammer structure 40 having a diameter of 143.8 mm and a length of 150 mm (volume of 2.44 liters).
  • the apparent density of the her cam fired body 50 constituting the aggregated her cam structure 40 is 0.49 gZcm 3 .
  • the exhaust gas purification equipment for measuring the regeneration rate and evaluating the exhaust gas purification performance was assembled by the following method.
  • FIG. 5 is an explanatory diagram of an exhaust gas purification device.
  • This exhaust gas purifying device 270 includes a 2L common rail diesel engine 276, an exhaust gas pipe 277 through which exhaust gas of engine 276 power is circulated, and a metal casing 271 connected to the exhaust gas pipe 277 and containing the Hercam structure 40.
  • Sampler 278 that samples the exhaust gas before flowing through the Harcam structure
  • Sampler 279 that samples the exhaust gas after flowing through the Harcam structure
  • Scanning mobility particle size analyzer (Scanning Mobility Particle Analyzer) equipped with a diluter 280 and PM counter 281 (TSI, Agglomerated Particle Counter 3022A-S) that measures the amount of PM contained in the diluted exhaust gas Sizer SMPS).
  • the her cam structure is not particularly limited, but in FIG. The figure showing the installation of the hybrid Hercam structure 40 is shown.
  • the integrated hard cam structure is used as the her cam structure, and the metal is held in a state where the holding seal member is wound around the outer periphery. Installed in the casing.
  • the weight a of the aggregated hard cam structure was measured with no PM deposited. Then times
  • Rolling speed is 3000 min _1
  • torque of the engine 276 was operated for 5 hours at 50 Nm, was deposited on a set type Ha second cam structure a PM.
  • the engine was operated for 7 minutes by the post-injection method, whereby the aggregated honeycomb structure was subjected to a regeneration treatment, and the weight a of the aggregated honeycomb structure after the regeneration treatment was measured.
  • Regeneration rate (%) (1— (a -a) / x) X 100
  • the playback rate calculated after the first playback process was defined as the first playback rate.
  • This operation-regeneration process was repeated as one cycle, engine oil was changed every five cycles, and 200 cycles were repeated.
  • the regeneration rate (%) was calculated using the following calculation formula in the same manner as the first regeneration rate.
  • Regeneration rate (%) (1— (a -a) / x) X 100
  • This regeneration rate was defined as the 200th regeneration rate.
  • Exhaust gas purification performance was evaluated in the same manner as in Example 1 except that additive 1 was used as a compound containing a metal element, and engine oil with 5% by weight of the additive was prepared.
  • Exhaust gas purification performance was evaluated in the same manner as in Example 1 except that additive 1 was used as a compound containing a metal element and an engine oil to which 10% by weight of the additive was added was prepared.
  • Example 2 As in Example 1, except that the compound represented by the chemical formula shown in Table 1 was used as the compound containing the metal element and an engine oil was prepared by adding 5% by weight of each additive. The exhaust gas purification performance was evaluated.
  • (C H) in Examples 23 to 25 represents a (bis) cyclopentagel group.
  • the additives used in -24 represent cyclopentagenyl complexes of cerium ( ⁇ ), iron ( ⁇ ), and cobalt ( ⁇ ), respectively.
  • Exhaust gas purification performance was evaluated in the same manner as in Example 1 except that an engine oil was used with an additive having a compounding power including a metal element.
  • Exhaust gas purification performance was evaluated in the same manner as in Example 1 except that additive 1 was used as a compound containing a metal element, and an engine oil was added with 0.5% by weight of the additive.
  • Table 1 shows the results of these Examples and Comparative Examples.
  • FIG. 1 A diagram schematically showing a part of a diesel engine and an exhaust gas purification device connected to the diesel engine.
  • FIG. 2 (a) to (d) show the above-mentioned hard cam when the exhaust gas purification filter having a hard cam structural force is disposed in the pipe connected to the engine in the fourth invention.
  • FIG. 5 is a conceptual diagram schematically showing various states that occur in a partition wall portion of a structure.
  • FIG. 3 is a perspective view schematically showing an example of a collective hard cam structure.
  • FIG. 4 (a) is a perspective view of a her cam fired body constituting the her cam structure shown in FIG.
  • (B) is a BB line cross-sectional view of the no-cam fired body shown in (a).
  • FIG. 5 is an explanatory view of an exhaust gas purification apparatus assembled in an example.
  • FIG. 6 (a) to (d) show that the partition wall of the above-mentioned hard cam structure is obtained when an exhaust gas purifying filter that also has a hard cam structure is disposed in a pipe connected to the engine. It is a conceptual diagram schematically showing various states that occur in the part.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Lubricants (AREA)

Abstract

La présente invention concerne un additif pour huile moteur lequel lorsqu'il est alimenté dans une chambre de combustion d'un moteur à combustion interne et, après la combustion du carburant, introduit conjointement avec un gaz d'échappement dans un filtre de purification de gaz d'échappement, qui existe sous la forme d'un catalyseur de purification de gaz d'échappement dans le filtre de purification de gaz d'échappement et est capable de favoriser la combustion des particules, en utilisant l'activité catalytique de celui-ci. On propose un additif pour huile moteur constitué d'un composé contenant un élément métallique, caractérisé en ce que l'oxyde de métal résultant de l'oxydation de l'élément métallique présente une activité catalytique favorisant la combustion des particules contenues dans le gaz d'échappement déchargé d'un moteur à combustion interne.
PCT/JP2006/308901 2006-04-27 2006-04-27 Additif pour huile moteur, huile moteur et procede de purification de gaz d'echappement Ceased WO2007125587A1 (fr)

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JP2008513034A JPWO2007125587A1 (ja) 2006-04-27 2006-04-27 エンジンオイル用添加剤、エンジンオイル及び排ガス浄化方法
PCT/JP2006/308901 WO2007125587A1 (fr) 2006-04-27 2006-04-27 Additif pour huile moteur, huile moteur et procede de purification de gaz d'echappement
EP06114706A EP1849853B1 (fr) 2006-04-27 2006-05-30 Additive de l'huile à moteur, l'huile à moteur et méthode de purification de gaz d'échappement

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