WO2009136536A1 - Appareil de récupération de chaleur résiduelle - Google Patents

Appareil de récupération de chaleur résiduelle Download PDF

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Publication number
WO2009136536A1
WO2009136536A1 PCT/JP2009/057804 JP2009057804W WO2009136536A1 WO 2009136536 A1 WO2009136536 A1 WO 2009136536A1 JP 2009057804 W JP2009057804 W JP 2009057804W WO 2009136536 A1 WO2009136536 A1 WO 2009136536A1
Authority
WO
WIPO (PCT)
Prior art keywords
negative pressure
cooling water
passage
chamber
pressure introduction
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.)
Ceased
Application number
PCT/JP2009/057804
Other languages
English (en)
Japanese (ja)
Inventor
堀亮一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Corp
Original Assignee
Calsonic Kansei Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Calsonic Kansei Corp filed Critical Calsonic Kansei Corp
Publication of WO2009136536A1 publication Critical patent/WO2009136536A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features having two or more purifying devices arranged in parallel
    • F01N13/017—Exhaust or silencing apparatus characterised by constructional features having two or more purifying devices arranged in parallel the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
    • F01N2410/02—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device in case of high temperature, e.g. overheating of catalytic reactor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a waste heat recovery apparatus that recovers energy from engine exhaust.
  • waste heat energy the energy of the engine exhaust
  • the engine coolant is heated using waste heat energy
  • the engine warm-up time can be increased and the warm Htt performance can be improved.
  • JP2006-105124A the exhaust passage of the engine is branched halfway, and a heat exchange crane is installed in one of the passages to exchange heat between the exhaust gas and the cooling water.
  • a switch rev that switches between exhaust and exhaust flow is arranged upstream of both passages. According to this configuration, when the engine cooling water is low due to cold start or the like, the cooling water is heated with the waste heat energy by switching the switching valve so that the exhaust gas flows in the heat exchange. Warm-up promotion and assistance can be performed.
  • JP2006-10512 A two passages are arranged coaxially by arranging one passage inside the other passage, but the two passages are arranged in parallel as in JP5-195765A. May be. Summary of the Invention
  • the switching valve can be switched by using an electric motor or a negative pressure generated downstream of the engine throttle valve.
  • An object of the present invention is to provide a waste heat recovery apparatus capable of switching the recovery state of waste heat energy according to the cooling water without using the zero air type.
  • a waste heat recovery device that recovers energy from exhaust flowing through an engine exhaust passage, and is disposed in the Ml own exhaust passage, and the exhaust flowing through the Sift own exhaust passage and the frf own engine Heat exchange that exchanges heat with cooling water, and the first position that is placed in the iff self-exhaust passage and blocks the inflow of exhaust to the braided self-heat exchange, and the inflow of exhaust to the self-heat exchange
  • a switching valve that can be switched between a second position that permits the switching of the iff self-switching valve from the first position by connecting to the rev and the negative pressure of the Sift self-engine.
  • a negative pressure actuator that switches to the second position; a negative pressure introduction passage that connects a throttle valve downstream of the intake passage of the self engine and a tins negative pressure actuator; and at least a part of the negative pressure introduction passage Closely placed, tin me en
  • the cooling water passage that allows the cooling water to flow in self-heat exchange, and the Ml self-negative pressure introduction passage and the tiff self-cooling water at a location where the iff self-negative pressure introduction passage and the self-cooling water passage are arranged close to the tiff.
  • a negative pressure introduction switch that is arranged so as to intersect with both of the passages and switches whether or not the negative pressure of the self engine is introduced to the frt self negative pressure actuator according to the cooling water
  • the ffrts negative pressure introduction switching valve has a valve body in which a first chamber connected to the key self negative pressure introduction passage and a second chamber connected to the cooling water passage are defined, and the first knitting first Between the room and the second room, a part of the second room is exposed, and the heat received from the cooling water in the second room.
  • thermo element The expansion of the thermo element, the atmosphere opening port that communicates the first room with the atmosphere, and the tiff self atmosphere opening port, and when the tiff self thermo element is extended, the valve opens and the IGf
  • a waste heat recovery device equipped with a relief solenoid that opens the negative pressure of the self-negative pressure introduction passage to the atmosphere is provided.
  • the recovery state of the waste heat energy can be switched according to the temperature of the cooling water regardless of the electric type, and the apparatus can be simplified and reduced in cost.
  • FIG. 1 is a schematic configuration diagram of a waste heat recovery apparatus according to an embodiment of the present invention.
  • FIG. 2 is an internal configuration diagram of the negative pressure introduction switching valve.
  • FIG. 3 is a diagram for explaining a partial modification of the embodiment of the present invention. DESCRIPTION OF PREFERRED EMBODIMENTS
  • FIG. 1 shows a schematic configuration of a waste heat recovery apparatus according to an embodiment of the present invention.
  • This waste heat recovery device is used to promote warm-up of the engine 1 and assist heating when the temperature of the cooling water of the engine 1 is low due to cold start or the like.
  • a three-way catalyst 3 In the exhaust passage 2 of the engine 1, a three-way catalyst 3, a waste heat recovery passage 4 and a bypass passage 5 provided in parallel, a switching valve 6, and a silencer 7 are arranged in this order from the upstream side.
  • a heat exchanger 8 is disposed in the waste heat recovery passage 4.
  • the waste heat recovery passage 4 and the bypass passage 5 can be arranged coaxially. Exhaust gas from the engine 1 is purified by the three-way catalyst 3, passes through the waste heat recovery passage 4 or the bypass passage 5, depending on the position of the cut / rubb 6, and is silenced by the silencer 7. Later it is released into the atmosphere.
  • Waste heat recovery passage 4 and bypass passage 5 are connected to the upstream and downstream sides of the 6 is provided at the downstream connection.
  • the cut / rubb 6 is biased by a spring (not shown) toward the position A shown in the figure where the waste heat recovery passage 4 is closed. In this state, the exhaust gas flows only through the bypass passage 5.
  • the switching valve 6 is arranged at the connection portion on the downstream side of the waste heat collection passage 4 and the bypass passage 5, but it may be arranged at the connection on the upstream side.
  • a negative pressure actuator 9 is connected to the switching valve 6.
  • the negative pressure actuator 9 is, for example, a diaphragm type actuator, and is connected to the downstream of the slot valve 11 of the engine 1 through a negative pressure introduction passage 10.
  • the cooling water passage 21 of the heater circuit 20 of the engine 1 is connected to the heat exchange ⁇ 8.
  • the cooling water leaving the engine 1 is heated in the order of the heater core 2 2 that heats the air by heat exchange between the air for cooling and the cooling water, the pump 2 3 that circulates the cooling water, and the heat exchange m ⁇ 8 in this order. Circulate.
  • the cooling fluid power S is heated by heat exchange between the exhaust and the cooling water in the heat exchange 8 to promote engine 1 warm-up and assist heating. Is called.
  • negative pressure introduction passage 10 and the cooling water passage 21 are arranged at least partially adjacent to each other, and between them, the negative pressure introduction passage 10 and the cooling water passage 21 are negatively crossed.
  • Pressure introduction cut valve 30 is arranged. That is, negative pressure introduction switching valve
  • the length of the negative pressure introduction passage 10 and the cooling water passage 21 at the portion where 30 is disposed is shorter than the total length of the negative pressure introduction switching valve 30.
  • the negative pressure introduction switching valve 30 is a valve that switches the force for introducing the negative pressure of the engine 1 to the negative pressure actuator 9 according to the ⁇ of the cooling water.
  • the middle of the negative pressure introduction passage 10 and the cooling water passage 21 are arranged close to each other,
  • the negative pressure introduction switching valve 30 is arranged, but the negative pressure introduction passage 10 is branched in the middle, and the branched passage and the cooling water passage 21 are arranged close to each other, and the negative pressure introduction is conducted therebetween. You can also place the on / off switch Banolev 30.
  • FIG. 2 shows the internal structure of the negative pressure introduction switching valve 30.
  • a first chamber 3 2 and a second chamber 33 are defined in the valve body 31 of the negative pressure introduction switching valve 30.
  • the first chamber 3 2 is connected to the negative pressure introduction passage 10 and the negative pressure of the engine 1 is introduced.
  • the second chamber 33 is connected to the middle of the cooling water passage 21 so that the cooling water flows.
  • An air release port 3 4 is formed in the first chamber 3 2.
  • the atmosphere release port 3 4 communicates with the atmosphere via a side hole 3 5 formed on the side surface of the valve body 3 1.
  • a relief valve 3 6 is arranged in the air release port 3 4, and the relief valve 3 6 is urged by a spring 3 7 in a direction to close the air release port 3 4.
  • thermo element 40 is exposed to the second chamber 3 3, and the cooling water and the worm that circulates in the second chamber 3 3. Arranged in such a state. Further, the lower part of the thermo element 40 is partially supported by a support part 50 erected on the inner wall of the second chamber 33. As a result, the heat of the cooling water flowing through the second chamber 33 is transmitted to the entire lower part of the thermoelement 40 (excluding the contact portion with the support 50), and the thermoelement 4 is received by the heat received from the cooling water. 0 expands.
  • the thermo-element 40 includes a piston 41 and a bottomed cylindrical element body 42 that accommodates the piston 41 with the tip exposed.
  • the space defined by the piston 4 1 and the element body 4 2 is filled with an amplifier block 4 3, a diaphragm 4 4, and a wax 4 5 made of an incompressible elastic material such as a high-viscosity fluid or rubber.
  • the wax 45 receives the heat from the cooling water and liquefies and expands, and pushes up the diaphragm 44 upward.
  • the displacement of the diaphragm 4 4 is increased by the amplifier block 4 3 and the piston 4 1 is pushed up.
  • the screw 4 1 contacts the relief valve 3 6 and pushes up the relief valve 3 6 against the urging force of the spring 3 7.
  • the air release port 3 4 is opened, and the negative pressure in the negative pressure introduction passage 10 connected to the first chamber 3 2 is released to the atmosphere.
  • the negative pressure introduction switching valve 30 is in the atmospheric release position”.
  • the position of the switching valve 6 before starting the engine 1 is the position A shown in FIG.
  • negative pressure is generated downstream of throttle valve 1 1. If the cooling water is low due to cold start etc., the thermal expansion of the wax 45 will not occur, so the negative pressure introduction switching valve 30 is in the negative pressure introduction position and the negative pressure downstream of the throttle valve 1 1 is negative. It is introduced into the negative pressure actuator 9 through the pressure introduction passage 10. As a result, the negative pressure actuator 9 operates and the switching valve 6 force S is switched from position A to position B.
  • the negative pressure introduction switching valve 30 moves to the atmospheric release position, and the negative pressure in the negative pressure introduction passage 10 is released to the atmosphere.
  • the negative pressure actuator 9 stops operating, and the valve 6 returns from position B to position A. This ends the recovery of waste heat and prevents an excessive increase in cooling water.
  • the waste heat recovery apparatus according to the embodiment of the present invention, as described above, the recovery state of the waste heat energy can be switched according to the temperature of the cooling water regardless of the electric type, thereby simplifying the apparatus and reducing the cost. Can be
  • FIG. 3 shows an example in which the shape of the support portion 50 that supports the lower portion of the thermoelement 40 is changed. Other configurations are the same as those shown in FIGS.
  • the surface on the upstream side in the flow direction of the cooling water in the second chamber 33 of the support part 50 (hereinafter referred to as the front surface of the support part) 5 1 force Thermo element 40 so that the 0 side becomes the downstream side It has a straightening shape that is curved so as to be concave and concave on the downstream side.
  • the cooling water flows between the bottom surface of the thermo-element 40 and the wall of the second chamber 33 to the bottom surface of the thermo-element 40 and the TO.
  • the cooling water becomes a laminar flow near the bottom of the water and the flow velocity decreases, and this becomes a boundary layer of ⁇ , which reduces the efficiency of the application from the cooling water to the thermoelement 40.
  • the cooling water flowing between the bottom surface of the thermo element 40 and the inner wall of the second chamber 33 is rectified by the front face 51 of the support part 50, The cooling water comes into contact with the bottom surface at a right angle. Therefore, no laminar flow is formed near the bottom of the thermo-element 40, and good heat transfer is realized between the cooling water and the thermo-element 40. Responsiveness can be improved.
  • the negative pressure introduction switching valve 30 may be arranged in the vicinity of the cooling water outlet of the heat exchanger 8 or in the vicinity of the cooling water inlet, and the negative pressure introducing valve 30 and the heat crus 8 may be provided integrally. Good. As a result, the waste heat recovery device can be downsized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust Silencers (AREA)

Abstract

Selon l'invention, une vanne de commutation d'introduction de pression négative (30) est équipée d'un corps de vanne (31), dont l'intérieur est divisé en une première chambre (32) raccordée à un passage d'introduction de pression négative (10) et en une seconde chambre (33) raccordée à un passage d'eau de refroidissement (21); d'un thermocouple (40) qui est agencé entre la première chambre (32) et la seconde chambre (33), qui est partiellement exposé à la seconde chambre (33), et qui s'allonge en raison de la chaleur reçue en provenance de l'eau de refroidissement dans la seconde chambre (33); d'un orifice de purge d'air (34) qui relie la première chambre (32) et l'air, et d'un clapet de surpression (36) qui est agencé dans l'orifice de purge d'air (34), qui s'ouvre lorsque le thermocouple (40) s'allonge, et qui relâche la pression négative dans le passage d'introduction de pression négative (10) vers l'air.
PCT/JP2009/057804 2008-05-09 2009-04-13 Appareil de récupération de chaleur résiduelle Ceased WO2009136536A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-123110 2008-05-09
JP2008123110A JP2009270522A (ja) 2008-05-09 2008-05-09 廃熱回収装置

Publications (1)

Publication Number Publication Date
WO2009136536A1 true WO2009136536A1 (fr) 2009-11-12

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PCT/JP2009/057804 Ceased WO2009136536A1 (fr) 2008-05-09 2009-04-13 Appareil de récupération de chaleur résiduelle

Country Status (2)

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JP (1) JP2009270522A (fr)
WO (1) WO2009136536A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974146A1 (fr) * 2011-04-15 2012-10-19 Faurecia Sys Echappement Element de ligne d'echappement avec un actionneur thermosensible

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6056201B2 (ja) * 2012-06-01 2017-01-11 いすゞ自動車株式会社 エンジンの暖機装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5789811U (fr) * 1980-11-20 1982-06-02
JPS63118323U (fr) * 1987-01-27 1988-07-30
JP2007032561A (ja) * 2005-06-20 2007-02-08 Sango Co Ltd 排気熱回収装置
JP2008101496A (ja) * 2006-10-18 2008-05-01 Toyota Motor Corp 排気系熱交換器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5789811U (fr) * 1980-11-20 1982-06-02
JPS63118323U (fr) * 1987-01-27 1988-07-30
JP2007032561A (ja) * 2005-06-20 2007-02-08 Sango Co Ltd 排気熱回収装置
JP2008101496A (ja) * 2006-10-18 2008-05-01 Toyota Motor Corp 排気系熱交換器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2974146A1 (fr) * 2011-04-15 2012-10-19 Faurecia Sys Echappement Element de ligne d'echappement avec un actionneur thermosensible

Also Published As

Publication number Publication date
JP2009270522A (ja) 2009-11-19

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