EP2683921A1 - Systeme de lubrification d'un moteur thermique, comprenant une pompe a huile a cylindree variable - Google Patents
Systeme de lubrification d'un moteur thermique, comprenant une pompe a huile a cylindree variableInfo
- Publication number
- EP2683921A1 EP2683921A1 EP12709918.2A EP12709918A EP2683921A1 EP 2683921 A1 EP2683921 A1 EP 2683921A1 EP 12709918 A EP12709918 A EP 12709918A EP 2683921 A1 EP2683921 A1 EP 2683921A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- pressure
- oil
- lubrication system
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005461 lubrication Methods 0.000 title claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 title claims description 22
- 238000002485 combustion reaction Methods 0.000 title abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 238000013507 mapping Methods 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 238000012384 transportation and delivery Methods 0.000 abstract 3
- 239000003921 oil Substances 0.000 description 47
- 238000000034 method Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
- F01M2001/0238—Rotary pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
- F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
- F01M2001/0246—Adjustable pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
- F01M2001/083—Lubricating systems characterised by the provision therein of lubricant jetting means for lubricating cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
- F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
Definitions
- the present invention relates to a lubrication system of a heat engine, and a motor and a motor vehicle comprising such a lubrication system.
- the thermal engines generally comprise an oil pump that rotates continuously, to supply pressurized oil to the crankshaft and various moving parts of the engine, in order to lubricate and cool the guide bearings of these elements.
- Control valves arranged in the oil circuit comprising pressure regulating valves which open under a defined pressure, allow to obtain a certain regulation of the fluid flow supplying the various components.
- a known type of oil pump presented in particular by the document EP-A1-1537335, comprises a variable displacement regulated by a piston, this displacement adjustment being adjusted according to different operating parameters of the engine, to reduce the mechanical power absorbed by the drive of this pump.
- Another known method for adjusting the oil flow of the piston cooling nozzles uses a solenoid valve controlled by a control current in order to deliver an oil pressure to these nozzles only if necessary. This method makes it possible to limit the flow of oil delivered by the pump, and to reduce its displacement at certain times in order to reduce the driving torque of the rotor of this pump.
- a problem with this method is that the engine oil circuit must be modified, and a solenoid valve comprising a power supply must be added, which entails costs.
- the present invention is intended in particular to avoid these disadvantages of the prior art, and to provide a simple and effective solution allowing cooling the pistons of a heat engine, while reducing the power absorbed by the oil pump.
- a lubrication system of a heat engine comprising an oil pump realizing different flow rates controlled by a control means comprising a map that according to the pressure and the oil temperature, and the speed of rotation of the engine , determines a target pressure and a flow rate of the pump to obtain it, this system also supplying cooling nozzles for the engine pistons, characterized in that the nozzle supply circuit comprises a regulating valve opening above a pressure threshold, and in that the mapping of the control means further takes into account the load of the engine, which in case of need for cooling of the engine pistons depending on this load, determines a target pressure greater than the threshold pressure of the valve, and the corresponding setting of the pump flow.
- An advantage of the lubrication system according to the invention is that it is possible with only an additional mechanical valve, if necessary to control a larger flow to obtain a higher pressure, in order to open the valve to obtain engine cooling, and the rest of the time will be satisfied with a lower flow rate depending on the other needs of the engine, in order to reduce the mechanical power absorbed by the pump.
- control method according to the invention can comprise one or more of the following characteristics, which can be combined with one another.
- the threshold pressure of the regulating valve is greater than the usual target pressure necessary for an engine at its normal operating temperature.
- the oil pump has a variable displacement to adjust its flow.
- variable displacement oil pump may comprise a rotor comprising radial vanes which slide outwards, to bear on the internal surface of a stator.
- the stator can move to adjust the displacement of the oil pump by means of an oil pressure acting on a piston surface.
- the oil pressure can be controlled by a solenoid valve controlled by the control means.
- control means is integrated in the control computer of the heat engine.
- the subject of the invention is also a heat engine comprising a lubrication system comprising a variable flow oil pump, controlled by a control means having a mapping which, according to the pressure and the oil temperature, and the speed of the engine. rotation of the motor, determines a target pressure and a flow rate of the pump to obtain it, this system also supplying cooling nozzles for the engine pistons, characterized in that the nozzle supply circuit comprises a regulating valve opening above a pressure threshold, which is greater than the usual target pressure required for an engine at its normal operating temperature.
- the invention also relates to a motor vehicle having a heat engine comprising a lubrication system, which comprises any one of the preceding features.
- Figure 1 shows a heat engine 1 comprising a motor unit 2 receiving the cylinders, below which is an oil sump 4 containing the lubricating oil.
- An oil pump 6 which is variable displacement, sucks by a suction screen 8 the oil contained in the housing 4.
- the pressurized oil then passes into an oil filter 10 to be purified, then is distributed in various pipes.
- a first pipe 12 supplies the engine block
- a second pipe 16 feeds the cylinder head 18, to lubricate the bearings of the camshaft and the thrusters of the valves.
- a control computer 20 of the oil pump 6 controls by an actuator the adjustment of the displacement of this pump.
- the control computer 20 of the oil pump 6 is integrated in the control computer of the engine 1 which controls the ignition and fuel injection of the engine, which reduces costs.
- the variable displacement oil pump 6 may comprise in particular a rotor comprising radial vanes which slide outwardly to bear on the cylindrical inner surface of a circular stator, comprising an axis offset from that of the rotor so as to obtain on a revolution of this rotor, a variation of the volume of each chamber located between two pallets.
- a simple means of controlling the displacement of the pump is to move the stator to move away or closer to its center of the axis of the rotor, so as to respectively increase or reduce the displacement.
- the adjustment of the oil pump 6 can be carried out according to various known methods, for example by the control by means of a solenoid valve, an oil pressure acting in a chamber or on a piston control, to move the stator and reduce the displacement.
- the control computer 20 of the oil pump 6 comprises, in a known manner, a mapping which, according to the actual pressure and the oil temperature, and the rotation speed of the motor measured permanently, determines a target pressure as well as a pump flow to get it.
- control computer 20 regulates, by its actuator, the displacement of the pump 6 so as to reach this target pressure, by increasing or reducing this displacement in the case where the pressure is respectively too weak or too strong.
- the opening threshold pressure of the valve 22 is greater than the usual target pressure necessary for an engine at its normal operating temperature, so as to leave this valve closed and do not cool the pistons unnecessarily, which makes it possible to obtain a rather high temperature favoring a better combustion.
- the method according to the invention implemented by the control computer 20, also takes into account information on the engine load delivered by the engine computer, to establish a need for additional cooling of the pistons in case of heavy load.
- the displacement of the pump 6 may remain lower so as to maintain a lower pressure which allows the regulating valve 22 to close.
- the lower cylinder capacity and the absence of loss of a volume of oil through the cooling nozzles 26, allow to limit the driving torque of the pump 6.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1151971A FR2972488B1 (fr) | 2011-03-10 | 2011-03-10 | Systeme de lubrification d'un moteur thermique, comprenant une pompe a huile a cylindree variable |
| PCT/FR2012/050335 WO2012120213A1 (fr) | 2011-03-10 | 2012-02-16 | Systeme de lubrification d'un moteur thermique, comprenant une pompe a huile a cylindree variable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2683921A1 true EP2683921A1 (fr) | 2014-01-15 |
Family
ID=44543976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12709918.2A Withdrawn EP2683921A1 (fr) | 2011-03-10 | 2012-02-16 | Systeme de lubrification d'un moteur thermique, comprenant une pompe a huile a cylindree variable |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2683921A1 (fr) |
| FR (1) | FR2972488B1 (fr) |
| WO (1) | WO2012120213A1 (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5920483B2 (ja) * | 2012-11-07 | 2016-05-18 | 日産自動車株式会社 | 内燃機関のオイル供給装置 |
| DE102013113217A1 (de) * | 2013-11-29 | 2015-06-03 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Vorrichtung und Verfahren zur Schmierung und Kühlung von Kolben eines Verbrennungsmotors |
| FR3014480B1 (fr) | 2013-12-10 | 2015-12-25 | Peugeot Citroen Automobiles Sa | Procede de pilotage d'une pompe a huile pour ameliorer une prestation thermique dans l'habitacle d'un vehicule automobile et calculateur moteur correspondant |
| FR3095835B1 (fr) * | 2019-05-09 | 2021-08-13 | Psa Automobiles Sa | Procede de pilotage d'une pompe a huile |
| CN113756907B (zh) * | 2021-08-05 | 2022-11-08 | 东风汽车集团股份有限公司 | 一种发动机油压控制方法、装置及车辆 |
| CN113783360B (zh) * | 2021-09-15 | 2023-05-12 | 臻驱科技(上海)有限公司 | 一种用于电驱动系统的冷却系统 |
| CN115680851B (zh) * | 2022-11-04 | 2026-03-17 | 广州汽车集团股份有限公司 | 活塞冷却喷嘴控制方法、装置、设备及存储介质 |
| CN118653900B (zh) * | 2024-08-15 | 2024-12-17 | 潍柴动力股份有限公司 | 一种机油泵的控制方法、装置、电子设备、存储介质 |
| CN119122645B (zh) * | 2024-10-31 | 2026-01-13 | 广西玉柴机器股份有限公司 | 一种柴油机快速建压低压润滑方法及系统 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1151971A (fr) | 1956-06-29 | 1958-02-07 | Procédé de repolissage et régénération des surfaces des verres de lunettes en matière plastique | |
| DE19933363A1 (de) * | 1999-07-20 | 2001-02-01 | Daimler Chrysler Ag | Vorrichtung zur Kühlung und/oder Schmierung einer Hubkolbenbrennkraftmaschine |
| DE10239364A1 (de) | 2002-08-28 | 2004-03-18 | Dr.Ing.H.C. F. Porsche Ag | Einrichtung zur Regelung der Pumpleistung einer Schmiermittelpumpe für eine Brennkraftmaschine |
| DE102004017909A1 (de) * | 2004-04-13 | 2005-11-10 | Bayerische Motoren Werke Ag | Vorrichtung zur Kühlung von zumindest einem Kolben einer Brennkraftmaschine |
| DE602005018692D1 (de) * | 2005-10-14 | 2010-02-11 | Renault Trucks | Schmiersystem und solch ein system umfassender verbrennungsmotor |
| US8047822B2 (en) * | 2006-05-05 | 2011-11-01 | Magna Powertrain Inc. | Continuously variable displacement vane pump and system |
| US7823545B2 (en) | 2007-08-17 | 2010-11-02 | Gm Global Technology Operations, Inc. | Piston squirter system and method |
-
2011
- 2011-03-10 FR FR1151971A patent/FR2972488B1/fr active Active
-
2012
- 2012-02-16 WO PCT/FR2012/050335 patent/WO2012120213A1/fr not_active Ceased
- 2012-02-16 EP EP12709918.2A patent/EP2683921A1/fr not_active Withdrawn
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2012120213A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2972488A1 (fr) | 2012-09-14 |
| FR2972488B1 (fr) | 2013-03-29 |
| WO2012120213A1 (fr) | 2012-09-13 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20130820 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20170317 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PSA AUTOMOBILES SA |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: F01M 1/16 20060101ALI20190329BHEP Ipc: F01M 1/02 20060101AFI20190329BHEP Ipc: F01M 1/08 20060101ALI20190329BHEP Ipc: F04C 14/22 20060101ALI20190329BHEP |
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| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| INTG | Intention to grant announced |
Effective date: 20190522 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20191002 |