CN101970847A - Egr catalyzation with reduced egr heating - Google Patents

Egr catalyzation with reduced egr heating Download PDF

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Publication number
CN101970847A
CN101970847A CN2009801088214A CN200980108821A CN101970847A CN 101970847 A CN101970847 A CN 101970847A CN 2009801088214 A CN2009801088214 A CN 2009801088214A CN 200980108821 A CN200980108821 A CN 200980108821A CN 101970847 A CN101970847 A CN 101970847A
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CN
China
Prior art keywords
exhaust
roughly
oxide catalyst
egr
molecular weight
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Pending
Application number
CN2009801088214A
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Chinese (zh)
Inventor
A·耶泽雷茨
N·W·卡里尔
B·J·斯托罗亚
H·陈
H·赫斯
M·康杜鲁
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Cummins Inc
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Cummins Inc
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Publication of CN101970847A publication Critical patent/CN101970847A/en
Pending legal-status Critical Current

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    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • 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
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
    • F01N2370/04—Zeolitic material
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/12—Hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

One embodiment is a unique system of EGR catalyzation with reduced EGR heating. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.

Description

EGR catalysis with the EGR heating that alleviates
The cross reference of related application
The application requires the U.S. Patent application No.12/286 of submission on September 26th, 2008,001 preference, this U.S. Patent application requires the U.S. Provisional Patent Application No.61/010 of submission on January 11st, 2008,733 rights and interests, each in described U.S. Patent application and the U.S. Provisional Patent Application all is incorporated by reference at this.
Technical field
The present invention relates to a kind of EGR catalysis with the EGR heating that alleviates.
Background technique
Exhaust gas recirculatioon (" EGR ") can be used in combination with explosive motor, to reduce discharging or to be used for other purpose.At present the method for EGR has the minimizing and the prevention that for example comprise about deposition (such as carbonaceous deposits), reduces or avoids the heating of EGR and other various shortcomings, restriction, unfavorable and problem.Need uniqueness disclosed herein and have equipment, the system and method for invention.
Summary of the invention
A mode of execution is the unique system with EGR catalysis of the EGR heating that alleviates.Other mode of execution, form, purpose, feature, advantage, aspect and benefit become obvious by following description and accompanying drawing.
Description of drawings
Fig. 1 is the schematic representation that comprises the system of explosive motor.
Fig. 2 is the schematic representation of cooled EGR system.
Fig. 3 is the schematic representation of cooled EGR system.
Fig. 4 is the schematic representation of cooled EGR system.
Fig. 5 is the schematic representation that comprises the vehicle of motor and cooled EGR system.
Embodiment
In order to promote understanding, will make reference to graphic mode of execution in the accompanying drawing now, and specific language will be used for describing graphic in the accompanying drawings mode of execution the principle of the invention.Yet; be understood that; therefore do not form the restriction of the scope of the invention, and other application that the present invention includes and protect the technician as field involved in the present invention of such change for institute's illustrated embodiment and modification and such graphic principle in the present invention to expect.
With reference to figure 1, illustrate the system 10 that comprises explosive motor 12 with intake manifold 14, this intake manifold 14 has the admission line 20 that is coupled to this intake manifold 14.Admission line 20 is coupled to the suction port 22 to admission line 20 supply surrounding atmospheres.Preferably, admission line 20 is coupled to the relief opening of compressor 16 of the pressurized machine of turbosupercharger 18 or another type.Compressor 16 receives fresh air and exports pressurized air from suction port 22.System 10 can comprise the closure 66 that is arranged between intake manifold 14 and the admission line 22.System 10 preferably includes charger-air cooler 24, and it is arranged on compressor 16 downstreams and cools off the pressurized air that receives from compressor 16.
Motor 12 also comprises gas exhaust manifold 30, and it has the exhaust duct 32 that is coupled to this gas exhaust manifold 30.Mechanically be coupled to the turbine 26 of compressor 16 from what the blast air of pipeline 32 drove turbosupercharger 18 via live axle 28.Turbine 26 preferably is connected to after-treatment system or surrounding environment via exhaust duct 34 relief openings.Can be via the part of EGR pipeline 38 recirculation from the exhaust of pipeline 32.The speed of exhaust gas recirculatioon or EGR can be by 36 controls of EGR valve, and this EGR valve 36 is illustrated as and is positioned at cooler for recycled exhaust gas 40 upstreams, but also can be positioned at cooler for recycled exhaust gas 40 downstreams or middle with catalyst unit 90 at cooler for recycled exhaust gas 40.No matter how are the position of EGR valve 36 or existence, catalyst unit 90 is preferably located in the position of cooler for recycled exhaust gas 40 upstreams.Catalyst unit 90 preferably includes non-oxide catalyzer or is referred to herein as the mild oxidation catalyzer of non-oxide catalyzer roughly.Non-oxide catalyzer roughly is the catalyzer that can operate with the one or more chemical reactions of catalysis, and described one or more chemical reactions are reducing the molecular weight that is present in the hydrocarbon compound in the exhaust under the situation of the temperature that does not improve exhaust or under the situation that the reduction temperature increases with respect to the reduction temperature that occurs by oxidation catalyst.The example of non-oxide catalyzer roughly comprises solid-acid catalyst and zeolite catalyst.The hydrocarbon cracking is the exemplary reaction by roughly non-oxide catalyzer institute catalysis.
System 10 also preferably includes control circuit 42, and it is based on microprocessor and can operate, with the operation of control and management motor 12, for example engine control module (ECM), control unit of engine (ECU).Control circuit 42 comprises and being used for from the various sensors that interrelate with system 10 or a plurality of input interfaces (input) of sensed system received signal.For example, system 10 preferably includes the engine rotation speed sensor 44 that is electrically connected to the engine speed input interface ES of control circuit 42 via signalling channel 46.Engine rotation speed sensor 44 can be operated the rotational speed with sensing motor 12, and produces the engine rotational speed signal of indication engine rotary speed on signalling channel 46.System 10 also preferably includes the mass airflow sensor 48 of being arranged to be communicated with and be electrically connected to via signalling channel 50 with admission line 20 fluids of motor 12 the mass air flow input interface (MFA) of control circuit 42.Mass airflow sensor 48 can be operated the mass flowrate signal of the mass flowrate of the fresh air of inflow admission line 20 being indicated with generation on signalling channel 50.As shown in Figure 1, system 10 preferably also comprises the lambda sensor 80 of being arranged to be communicated with and be electrically connected to via signalling channel 82 with exhaust duct 34 fluids the oxygen input interface (λ) of control circuit 42.Control circuit 42 preferably also comprises a plurality of output interfaces (output) that are used to control the one or more fluid treatment mechanism that interrelates with system 10.For example, EGR valve 36 comprises the EGR valve actuator 62 that is electrically connected to the EGR valve control output (EGRC) of control circuit 42 via signalling channel 63.Control circuit 42 can be operated with generation EGR valve control signal on signalling channel 63, and the EGR valve control signal on the EGR valve actuator 62 response signal passages 63, with the position with respect to reference position control EGR valve 36.In addition, closure 66 comprises the throttle actuator 68 that is electrically connected to the closure control output (ATC) of control circuit 42 via signalling channel 70.Control circuit 42 can be operated with generation closure control signal on signalling channel 70, and the closure control signal on the throttle actuator 68 response signal passages 70, with the position with respect to reference position control closure 66.System 10 preferably also comprises the fuel system 72 that is electrically connected to the fuel command output (FC) of control computer 42 via signalling channel 74.The fuel control signal that fuel system 72 response control circuits 42 produce on signalling channel 74, with to motor 12 fuel supplying, and control circuit 42 can be operated to produce such fuel control signal.
With reference to figure 2, illustrate the exemplary cooled EGR system 200 that comprises EGR valve 236, these EGR valve 236 circulations are coupled to non-oxide catalyst elements 290 roughly, and these non-oxide catalyst elements 290 circulations roughly are coupled to cooler for recycled exhaust gas 240.During operation, exhaust flows to EGR valve 236 from motor, gas exhaust manifold, exhaust duct or other exhaust source, and this EGR valve 236 preferably can be operated amount or the speed with the control blast air, but also may simply be close/open valve.Next exhaust flows to non-oxide catalyst elements 290 roughly, this non-oxide catalyst elements 290 roughly comprises one or more the non-oxide catalyzer roughly that can operate with the one or more reactions of the hydrocarbon compound in the catalytic exhaust gas, so that avoiding, minimize, controlling or reducing exhaust owing in all temperature risings of catalytic reaction the hydrocarbon compound of higher molecular weight is changed into the hydrocarbon compound of lower molecular weight.Then, blast air is to the cooler for recycled exhaust gas 240 of this exhaust of cooling.Exhaust can selectively be flow through one or more aftercoolers from cooler for recycled exhaust gas 240, and is being provided to intake manifold or was directly being provided to one or more cylinders and can mix with air inlet or pressurized air.
With reference to figure 3, illustrate the exemplary cooled EGR system 300 of the non-oxidiser unit 390 that comprises roughly, these non-oxide catalyst elements 390 circulations roughly are coupled to cooler for recycled exhaust gas 340, and these cooler for recycled exhaust gas 340 circulations are coupled to EGR valve 336.During operation, exhaust is from motor, gas exhaust manifold, exhaust duct or other exhaust source flow direction non-oxide catalyst elements 290 roughly, this non-oxide catalyst elements 290 roughly comprises one or more the non-oxide catalyzer roughly that can operate with the one or more reactions of the hydrocarbon compound in the catalytic exhaust gas, so that avoiding, minimize, controlling or reducing exhaust owing in all temperature risings of catalytic reaction the hydrocarbon compound of higher molecular weight is changed into the hydrocarbon compound of lower molecular weight.Next exhaust flows to the cooler for recycled exhaust gas 340 of this exhaust of cooling.Then, blast air is to EGR valve 336, and this EGR valve 336 preferably can be operated amount or the speed with the control blast air, but also may simply be close/open valve.Exhaust can selectively be flow through one or more aftercoolers from EGR valve 336, and is being provided to intake manifold or was directly being provided to one or more cylinders and can mix with air inlet or pressurized air.
With reference to figure 4, illustrate the exemplary cooled EGR system 400 of the non-oxide catalyst elements 490 that comprises roughly, these non-oxide catalyst elements 490 circulations roughly are coupled to EGR valve 436, and these EGR valve 436 circulations are coupled to cooler for recycled exhaust gas 440.During operation, exhaust is from motor, gas exhaust manifold, exhaust duct or other exhaust source flow direction non-oxide catalyst elements 490 roughly, this non-oxide catalyst elements 490 roughly comprises one or more the non-oxide catalyzer roughly that can operate with the one or more reactions of the hydrocarbon compound in the catalytic exhaust gas, so that avoiding, minimize, controlling or reducing exhaust owing in all temperature risings of catalytic reaction the hydrocarbon compound of higher molecular weight is changed into the hydrocarbon compound of lower molecular weight.Next exhaust flows to EGR valve 436, and this EGR valve 436 preferably can be operated with amount or the speed of selectively controlling blast air, but also may simply be close/open valve.Then, blast air is to the cooler for recycled exhaust gas 440 of this exhaust of cooling.Exhaust can selectively be flow through one or more aftercoolers from cooler for recycled exhaust gas 440, and is being provided to intake manifold or was directly being provided to one or more cylinders and can mix with air inlet or pressurized air.
With reference to figure 5, illustrate vehicle 500.Vehicle 500 is depicted as tractor truck, but can be various types of vehicles, for example comprise light truck, Medium Truck, heavy truck, bus, car, caravan, fire fighting and emergency ambulance, Construction traffic, boats and ships and other marine transportation instrument and such as the track vehicle of locomotive.Vehicle 500 comprises: motor 540, and it is preferably diesel engine, but can be the explosive motor of spark ignition or other type; And cooled EGR system 530, its preferably include one or more coolers for recycled exhaust gas that the EGR that provides to motor 440 with cooling can be provided, can be identical or similarly one or more roughly non-oxide catalyst elements and one or more valve, pump or other EGR control with above-mentioned non-oxide catalyst elements roughly.Other mode of execution imagination motor 540 can be used for other application, comprises for example generator set or industry, mining or oil gas equipment.
Tangible as accompanying drawing and text from above introduction, imagination is according to various mode of executions of the present invention.Some illustrative embodiments comprises system, and this system comprises: cooler for recycled exhaust gas, and this cooler for recycled exhaust gas can be operated, so that receive EGR gas and export EGR gas with second temperature with first temperature, this first temperature is higher than second temperature; And non-oxide catalyst elements roughly, it is configured to suck EGR gas and export EGR gas at relief opening at suction port; Wherein cooler for recycled exhaust gas and roughly non-oxide catalyst elements circulation coupling connection and non-oxide catalyst elements roughly are positioned at the cooler for recycled exhaust gas upstream.In other illustrative embodiments, non-oxide catalyst elements roughly can be operated with the catalytic hydrocarbon cracking; Non-oxide catalyst elements roughly comprises solid-acid catalyst; Non-oxide catalyst elements roughly comprises the zeolite catalyst composition; Non-oxide catalyst elements roughly can be operated, with the reaction of catalytic alkylation compound under the situation of the temperature of the EGR gas in not improving this non-oxide catalyst elements roughly; And/or non-oxide catalyst elements roughly can operate, to improve the reaction that is lower than catalytic alkylation compound in about 10 degrees centigrade in the temperature with the EGR gas in this non-oxide catalyst elements roughly.Other illustrative embodiments comprises explosive motor and gas exhaust manifold, and this gas exhaust manifold is communicated with the suction port fluid of roughly non-oxide catalyst elements.
Some illustrative embodiments comprises system, and this system comprises: motor; Circulation be coupled to motor to receive the EGR pipeline of exhaust from this motor; Circulation is coupled to the device of EGR pipeline with the molecular weight of the hydrocarbon molecule in the reduction exhaust; And circulation is coupled to the device of molecular weight of the hydrocarbon molecule that is used for reducing exhaust with the device of cooling EGR.In other illustrative embodiments, the device that is used to cool off EGR comprises engine coolant cooled EGR cooler; The device of molecular weight that is used for reducing the hydrocarbon molecule of exhaust comprises zeolite catalyst; The device of molecular weight that is used for reducing the hydrocarbon molecule of exhaust comprises hydrocarbon cracking catalyst; And/or the device of molecular weight that is used for reducing the hydrocarbon molecule of exhaust comprises solid-acid catalyst.In other illustrative embodiments, motor is a diesel engine; And/or diesel engine is configured as prime mover of vehicle.
Some illustrative embodiments comprises method, and this method comprises: the operation explosive motor comprises the exhaust of one or more hydrocarbon compounds with generation; With the part of roughly non-oxide catalyst treatment exhaust to reduce the molecular weight of described one or more hydrocarbon compounds effectively; Cool off this part exhaust; Provide this part exhaust with suction port to explosive motor.In other illustrative embodiments, use the part of non-oxide catalyst treatment exhaust roughly to comprise the hydrocarbon cracking reaction with the molecular weight that reduces one or more hydrocarbon compounds effectively; Comprise with the molecular weight that reduces one or more hydrocarbon compounds effectively with the part of roughly non-oxide catalyst treatment exhaust and to make described one or more hydrocarbon compounds be exposed to hydrocarbon cracking catalyst; Comprise with the molecular weight that reduces described one or more hydrocarbon compounds effectively with the part of roughly non-oxide catalyst treatment exhaust and to make described one or more hydrocarbon compounds be exposed to solid-acid catalyst; Comprise with the molecular weight that reduces described one or more hydrocarbon compounds effectively with the part of roughly non-oxide catalyst treatment exhaust and to make described one or more hydrocarbon compounds be exposed to zeolite catalyst; And/or appear at the single catalyst elements that is arranged in the cooler for recycled exhaust gas upstream with the part of roughly non-oxide catalyst treatment exhaust.
Although in detail diagram and described illustrative embodiments of the present invention in accompanying drawing and above stated specification; but it is illustrative and nonrestrictive that described illustrative embodiments is considered in nature; be understood that; only illustrate and described preferred implementation, and wish all changes and the modification of protection in spiritual scope of the present invention.Be understood that, although the feature that the use indication such as preferred or preferred literal that is used for illustrating is so described may more cater to the need, yet this may be optional, and as within the scope of the invention, as in by claims institute restricted portion, can imagine do not have as described in the mode of execution of feature.When reading right requires, unless explicit state on the contrary in the claims, otherwise when the literal that uses such as " one ", " one ", " at least one " or " at least a portion ", unintentionally claim is limited to only project.Unless explicit state on the contrary, otherwise when using term " at least a portion " and/or " part ", this project can comprise a part and/or the whole project of project.

Claims (20)

1. system comprises:
Cooler for recycled exhaust gas, it can be operated, so that receive EGR gas and export EGR gas with second temperature with first temperature, described first temperature is higher than described second temperature; And
Non-oxide catalyst elements roughly, it is configured to suck EGR gas and export EGR gas at relief opening at suction port;
Wherein, described cooler for recycled exhaust gas and described roughly non-oxide catalyst elements circulation coupling connection, and described roughly non-oxide catalyst elements is positioned at described cooler for recycled exhaust gas upstream.
2. system according to claim 1, wherein, described non-oxide catalyst elements roughly can be operated, with the catalytic hydrocarbon cracking.
3. system according to claim 1, wherein, described non-oxide catalyst elements roughly comprises solid-acid catalyst.
4. system according to claim 1, wherein, described non-oxide catalyst elements roughly comprises the zeolite catalyst composition.
5. system according to claim 1, wherein, described non-oxide catalyst elements roughly can be operated, with the reaction of catalytic alkylation compound under the situation of the temperature of the EGR gas in not improving described non-oxide catalyst elements roughly.
6. system according to claim 1, wherein, described non-oxide catalyst elements roughly can be operated, to improve the reaction that is lower than catalytic alkylation compound in about 10 degrees centigrade in the temperature with the EGR gas in the described non-oxide catalyst elements roughly.
7. system according to claim 1 also comprises explosive motor and gas exhaust manifold, and described gas exhaust manifold is communicated with the suction port fluid of described non-oxide catalyst elements roughly.
8. system comprises:
Motor;
The EGR pipeline, its circulation is coupled to described motor, to receive exhaust from described motor;
Circulation is coupled to the device of molecular weight that described EGR pipeline is used for reducing the hydrocarbon molecule of exhaust; And
Be used for cooling off EGR, circulation is coupled to the device of device of the molecular weight of the hydrocarbon molecule that is used to reduce exhaust.
9. system according to claim 8, wherein, the described device that is used to cool off EGR comprises engine coolant cooled EGR cooler.
10. system according to claim 8, wherein, the described device of molecular weight that is used for reducing the hydrocarbon molecule of exhaust comprises zeolite catalyst.
11. system according to claim 8, wherein, the described device of molecular weight that is used for reducing the hydrocarbon molecule of exhaust comprises hydrocarbon cracking catalyst.
12. system according to claim 8, wherein, the described device of molecular weight that is used for reducing the hydrocarbon molecule of exhaust comprises solid-acid catalyst.
13. system according to claim 8, wherein, described motor is a diesel engine.
14. system according to claim 8 also comprises vehicle, wherein said diesel engine is configured as prime mover of described vehicle.
15. a method comprises:
The operation explosive motor comprises the exhaust of one or more hydrocarbon compounds with generation;
With the part of roughly non-oxide catalyst treatment exhaust, to reduce the molecular weight of described one or more hydrocarbon compounds effectively;
The described part of coolant exhaust; And
The described part of exhaust is provided to the suction port of described explosive motor.
16. method according to claim 15 wherein, uses the part of non-oxide catalyst treatment exhaust roughly to comprise the hydrocarbon cracking reaction with the molecular weight that reduces described one or more hydrocarbon compounds effectively.
17. method according to claim 15, wherein, the part of usefulness non-oxide catalyst treatment exhaust roughly comprises with the molecular weight that reduces described one or more hydrocarbon compounds effectively makes described one or more hydrocarbon compounds be exposed to hydrocarbon cracking catalyst.
18. method according to claim 15, wherein, the part of usefulness non-oxide catalyst treatment exhaust roughly comprises with the molecular weight that reduces described one or more hydrocarbon compounds effectively makes described one or more hydrocarbon compounds be exposed to solid-acid catalyst.
19. method according to claim 15, wherein, the part of usefulness non-oxide catalyst treatment exhaust roughly comprises with the molecular weight that reduces described one or more hydrocarbon compounds effectively makes described one or more hydrocarbon compounds be exposed to zeolite catalyst.
20. method according to claim 15 wherein, uses the part of non-oxide catalyst treatment exhaust roughly to appear at the single catalyst elements that is arranged in the cooler for recycled exhaust gas upstream.
CN2009801088214A 2008-01-11 2009-01-09 Egr catalyzation with reduced egr heating Pending CN101970847A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US1073308P 2008-01-11 2008-01-11
US61/010733 2008-01-11
US12/286001 2008-09-26
US12/286,001 US20090178396A1 (en) 2008-01-11 2008-09-26 EGR catalyzation with reduced EGR heating
PCT/US2009/000190 WO2009089074A2 (en) 2008-01-11 2009-01-09 Egr catalyzation with reduced egr heating

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EP (1) EP2245293A4 (en)
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WO (1) WO2009089074A2 (en)

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US20090178396A1 (en) 2009-07-16
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WO2009089074A2 (en) 2009-07-16
EP2245293A4 (en) 2015-09-30

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