US20070163246A1 - Method and arrangement for cooling an exhaust system - Google Patents

Method and arrangement for cooling an exhaust system Download PDF

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Publication number
US20070163246A1
US20070163246A1 US11/623,063 US62306307A US2007163246A1 US 20070163246 A1 US20070163246 A1 US 20070163246A1 US 62306307 A US62306307 A US 62306307A US 2007163246 A1 US2007163246 A1 US 2007163246A1
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United States
Prior art keywords
engine
exhaust system
exhaust
condition
secondary air
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.)
Abandoned
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US11/623,063
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English (en)
Inventor
Robert Wassmur
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Individual
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Individual
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2046—Periodically cooling catalytic reactors
    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/022—Exhaust treating devices having provisions not otherwise provided for for cooling the device using air
    • 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
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D2041/0265—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to decrease temperature of the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0802—Temperature of the exhaust gas treatment apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1446—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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 an arrangement for cooling an exhaust system of a vehicle having an internal combustion engine, and more particularly to a secondary air injection system comprising such an arrangement.
  • evaporative emissions occur when, for example, on hot days gasoline heats up and evaporates from both the gasoline tank and wherever fuel may be present throughout the engine. They are also released from a hot engine and exhaust system when the car is running and/or idling. After the car is turned off, the engine still remains hot for a period of time, and gas vaporizes then, as well, even when the car is parked. This condition is called “hot soak”.
  • the fuel system in the engine compartment may be heated above a temperature which causes vapour lock or percolation of fuel in the fuel system located near the intake system of the engine.
  • pressure may build in the fuel system. If any of the fuel injectors drip, excess gas is likely to build up in the engine, making it hard to start. Still further, components arranged at or close to the exhaust system of the engine may suffer negative effects due to overheating thereof during the conditions described above.
  • a technical problem encountered with utilization of the air stream from an engine cooling fan as described above is that, although the above-mentioned arrangement results in a cooling of the exhaust system, it is not satisfactory either because of the space requirements of the ducting required to convey the air stream from the fan back to the engine exhaust or, conversely, to convey the engine exhaust forward to the air stream from the fan. Furthermore, the cooling fan will, in the prior art apparatus above, have to be run for a rather long period of time in order to provide for sufficient cooling during a hot soak condition.
  • the present invention is directed to providing an improved arrangement for cooling an exhaust system of a vehicle having an internal combustion engine, which has limited space requirements and is potentially less costly and complex to manufacture and has improved efficiency and operating characteristics and eliminates or at least reduces the effects of the above discussed problems as well as contributes to reducing evaporative emissions.
  • an exhaust system for an internal combustion engine includes: a secondary air injection system coupled to the exhaust system, said secondary air injection system including: a pump for introducing ambient air into the exhaust system via a supply channel; and a valve for selectively allowing said ambient air to be injected into the exhaust system; and a controller coupled to said engine and said secondary air injection system, said controller actuating said secondary air injection system to introduce ambient air into said exhaust system when an exhaust gas temperature is above a predetermined value and a predetermined engine condition is detected by said controller.
  • said predetermined engine status to be detected by this arrangement is either of an engine shutdown, a stopped or an idling status of said engine.
  • said elevated temperature condition to be detected by this arrangement is a so-called hot soak condition after heavy load operation of said engine.
  • FIG. 1 is a schematic illustration of an example of and arrangement for cooling an exhaust system of a vehicle having an internal combustion engine according to the present invention.
  • FIG. 2 is a schematic illustration of an exemplary method for cooling an exhaust system of a vehicle having an internal combustion engine in accordance with the present invention.
  • FIG. 1 there is illustrated schematically a simplified view of an internal combustion engine 1 having an arrangement 2 for cooling an associated exhaust system 3 in accordance with an embodiment of the present invention.
  • a piston 4 is shown arranged within a cylinder 5 of the engine 1 in conventional manner.
  • Fuel is injected into an air stream, illustrated by arrows 6 , by means of a fuel injector 7 and its associated hosing 8 .
  • the fuel is injected into the air stream 6 inside an inlet manifold 9 of the engine 1 and mixes with the air stream 6 , where after the air/fuel mixture in the inlet manifold 9 is introduced into the cylinder 5 by means of one or more inlet valves, not shown, in conventional manner.
  • FIG. 1 only illustrates schematically the initial piping 12 and a catalytic converter 13 .
  • the arrangement 2 further comprises a sensor 14 for detecting an elevated temperature condition of the exhaust system 3 .
  • a sensor 14 for detecting an elevated temperature condition of the exhaust system 3 .
  • one or more temperature sensors may be arranged at one or several locations along the extension of the exhaust system 3 .
  • the temperature sensor 14 is arranged to communicate with a controller 15 , such as an engine control unit (ECU), e.g. via control wiring 14 a.
  • ECU engine control unit
  • Controller 15 is further capable of detecting a predetermined engine operating status.
  • the predetermined engine status to be detected is preferably either of an engine shutdown status, a stopped status (i.e. the engine status following engine shutdown) or an idling status of the engine 1 , which statuses as further described in the background of the invention section are the engine statuses where hot soak is most likely to occur.
  • the arrangement 2 further comprises a pump 16 for selectively producing an airflow, illustrated by arrows 17 , drawn e.g. from ambient air, illustrated by arrows 18 , and a valve 19 for selectively allowing the produced airflow 17 to be injected into the exhaust system 3 .
  • the pump 16 preferably consists of an electrical air pump 16 and the valve 19 preferably consists of a check valve 19 .
  • the air pump 16 as well as the valve 19 are preferably arranged to be under the control of a control unit 15 , e.g. via control wiring 16 a , 19 a.
  • the airflow 17 which usually has the temperature of the ambient air 18 , may be arranged to be injected into the exhaust system 3 via a supply channel 20 , which is attached to one or more of: a cylinder head of the engine 1 ; an engine exhaust manifold 11 ; exhaust pipes 12 of the exhaust system 3 , or further via a supply channel arranged in a cylinder head of the engine 1 .
  • the controller 15 is arranged to, in response to a detected elevated temperature condition during a detected predetermined engine status, enable the pump 16 to produce the airflow 17 and adjust the valve 19 to allow the airflow 17 to be injected into the exhaust system 3 .
  • Introduction of the airflow 17 having essentially the temperature of the ambient air, into the hot exhaust system 3 promotes cooling thereof and thus reduces the effect of so called soak back, which might otherwise cause undesired heating of the engine 1 or neighbouring components.
  • the arrangement for cooling an exhaust system 3 of a vehicle having an internal combustion engine 1 in accordance with the present invention is preferably realized using a conventional secondary air injection system.
  • a conventional secondary air injection system is, as is well known to the person skilled in the art, normally used in order to shorten the time required for the catalyst to reach the so-called “light-off temperature”, which is done through injecting secondary air into the exhaust gas.
  • This secondary air is mixed with the exhaust gas immediately downstream of the engine's exhaust valves, resulting in an oxidation of the mixture consisting of the exhaust gases and the secondary air.
  • the oxidation process is mainly due to the hydrogen which is present in the exhaust gases.
  • the oxidation reaction generates a high amount of heat energy which is guided through the exhaust pipe 12 and fed to the catalyst 13 , which subsequently becomes heated more rapidly.
  • This secondary air function is necessary during cold starts as the catalysts commonly used today provide a very high degree of exhaust purification at the appropriate operating temperature of the catalyst, i.e. a conversion of harmful exhaust gas components to carbon monoxide and water.
  • a certain time period of heating is required in order for the catalyst to reach the operating temperature at which an optimum degree of purification may be obtained.
  • the so-called “light-off temperature” of the catalyst is approximately 200-350° C. and may be defined as the temperature at which the catalyst provides a 50% degree of purification of a certain harmful component in the exhaust gases.
  • the catalyst cannot operate in an optimum manner as regards the elimination of the harmful substances in the exhaust gases.
  • This preferred embodiment comprising use of a conventional secondary air injection system, is based on the realization that the conventional secondary air injection system, originally envisaged for the purpose of heating the exhaust system 3 , may be utilized for cooling of the same with only minor amendments to the control scheme of the components thereof.
  • the pump 16 may be a secondary air injection pump 16 of the secondary air injection system, which is arranged to pump ambient air 18 into the exhaust system 3 .
  • the valve 19 may be a valve 19 of the secondary air injection system.
  • the controller 15 is preferably an integral part of the engine control unit (ECU) of the vehicle, adding to the engine control unit (ECU) the control scheme for realising cooling of the exhaust system 3 in accordance with the present invention.
  • a conventional secondary air injection system is normally arranged in connection with an internal combustion engine 1 for the above described purpose.
  • Such an engine 1 is arranged to be supplied with an air/fuel mixture via an intake manifold 9 .
  • the engine exhaust 11 is connected to a catalytic converter 13 , which preferably is a conventional three-way catalyst which is adapted to reduce the harmful substances carbon monoxide (CO), hydrocarbon (HC) and oxides of nitrogen (NOx) which are present in the exhaust gas 10 .
  • the exhaust gas 10 is discharged from the engine via an exhaust pipe 12 .
  • FIG. 2 there is illustrated schematically in a flowchart the steps of a method for cooling an exhaust system 3 of a vehicle having an internal combustion engine 1 in accordance with the present invention.
  • an elevated temperature condition of the exhaust system 3 may be a so-called hot soak condition after heavy load operation of the engine. If detected, the flow follows the arrow path marked Y to an additional step 22 , which may be performed simultaneously with the above step, and in which an engine operating status, such as either of an engine shutdown, a stopped or an idling status of the engine, is detected.
  • the pump 16 being caused to produce the airflow 17 is a secondary air injection pump 16 of a secondary air injection system for an internal combustion engine 1 and the valve 19 arranged to allow the airflow 17 to be injected into the exhaust system 3 is a valve 19 of this secondary air injection system.
  • the above described arrangement 2 and method for cooling an exhaust system 3 of a vehicle having an internal combustion engine 1 using an arrangement 2 and method in accordance with the present invention, preferably comprising a secondary air injection system is useful on all internal combustion engines or so-called “Otto” engines and will prevent or reduce the effects of so called soak back using injection of secondary air into the exhaust system thereof.
  • the arrangement 2 enables a reliable cooling system to be designed whilst keeping the cost as low as possible, especially when an already present secondary air injections system is used for the implementation of the inventive arrangement 2 and method.
  • a secondary air injection system for an internal combustion engine 2 having a secondary air injection pump 16 , which is arranged to be controlled by an engine control unit 15 , which secondary air injection system comprises an arrangement 2 in accordance with the present invention and as described above.
  • an automotive vehicle having an internal combustion engine 1 having a secondary air injection system comprising an arrangement 2 in accordance with the present invention and as described above.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
US11/623,063 2006-01-16 2007-01-13 Method and arrangement for cooling an exhaust system Abandoned US20070163246A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06000821.6 2006-01-16
EP06000821A EP1808582B1 (de) 2006-01-16 2006-01-16 Verfahren und Anordnung für Kühlung eines Abgassystems

Publications (1)

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US20070163246A1 true US20070163246A1 (en) 2007-07-19

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US11/623,063 Abandoned US20070163246A1 (en) 2006-01-16 2007-01-13 Method and arrangement for cooling an exhaust system

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EP (1) EP1808582B1 (de)
DE (1) DE602006015766D1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150107242A1 (en) * 2013-10-18 2015-04-23 GM Global Technology Operations LLC Exhaust system with post-operation cooling for a vehicle, and a method thereof
US9267410B2 (en) 2014-01-14 2016-02-23 Caterpillar Inc. Injector cooling apparatus
US20160061176A1 (en) * 2013-03-29 2016-03-03 Mitsubishi Heavy Industries, Ltd. Exhaust purge device for gas internal combustion engine
WO2017155444A1 (en) * 2016-03-07 2017-09-14 Scania Cv Ab Fuel system for an internal combustion engine and a method to increase the vaporization temperature of a fuel used in a fuel system
CN107636270A (zh) * 2015-05-11 2018-01-26 Ge延巴赫两合无限公司 用于冲洗废气净化系统的方法
US11536177B2 (en) * 2018-01-16 2022-12-27 Carrier Corporation Exhaust gas temperature control
US20230212963A1 (en) * 2020-07-09 2023-07-06 Jaguar Land Rover Limited Valve seat injector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018062897A (ja) * 2016-10-13 2018-04-19 川崎重工業株式会社 ガスエンジンシステム

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US3751916A (en) * 1970-12-29 1973-08-14 Toyo Kogyo Co Exhaust gas purifying system for use in internal combustion engine
US3967929A (en) * 1973-01-13 1976-07-06 Nissan Motor Co., Ltd. Exhaust gas purifying system
US4327674A (en) * 1979-03-06 1982-05-04 Nissan Motor Co., Ltd. Apparatus for cooling a vehicle engine room
US6829886B2 (en) * 2001-04-10 2004-12-14 Toyota Jidosha Kabushiki Kaisha Emission control apparatus of internal combustion engine, and method for retarding deterioration of emission control catalyst
US6951099B2 (en) * 2001-04-03 2005-10-04 John Dickau Heated insulated catalytic converter with air cooling
US7213396B2 (en) * 2002-02-14 2007-05-08 Robert Bosch Gmbh Method and device for operating an internal combustion engine

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GB1372943A (en) * 1971-10-21 1974-11-06 Nissan Motor Exhaust system of an internal combustion engine including a cata lytic oxidation unit
GB1513460A (en) * 1975-10-29 1978-06-07 British Leyland Uk Ltd Anti-emission arrangements for internal combustion engine
JPS5786513A (en) * 1980-11-18 1982-05-29 Honda Motor Co Ltd Purifying device of exhaust from engine
US5493858A (en) * 1992-06-23 1996-02-27 Mitsubishi Denki Kabushiki Kaisha Controlling apparatus for introduction air into exhaust pipe of internal combustion engine
JPH0932540A (ja) * 1995-07-13 1997-02-04 Hino Motors Ltd ディーゼルエンジンの排ガス浄化装置
JP3631035B2 (ja) * 1999-02-22 2005-03-23 本田技研工業株式会社 内燃機関の排気２次空気供給制御装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3751916A (en) * 1970-12-29 1973-08-14 Toyo Kogyo Co Exhaust gas purifying system for use in internal combustion engine
US3967929A (en) * 1973-01-13 1976-07-06 Nissan Motor Co., Ltd. Exhaust gas purifying system
US4327674A (en) * 1979-03-06 1982-05-04 Nissan Motor Co., Ltd. Apparatus for cooling a vehicle engine room
US6951099B2 (en) * 2001-04-03 2005-10-04 John Dickau Heated insulated catalytic converter with air cooling
US6829886B2 (en) * 2001-04-10 2004-12-14 Toyota Jidosha Kabushiki Kaisha Emission control apparatus of internal combustion engine, and method for retarding deterioration of emission control catalyst
US7213396B2 (en) * 2002-02-14 2007-05-08 Robert Bosch Gmbh Method and device for operating an internal combustion engine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160061176A1 (en) * 2013-03-29 2016-03-03 Mitsubishi Heavy Industries, Ltd. Exhaust purge device for gas internal combustion engine
US9777692B2 (en) * 2013-03-29 2017-10-03 Mitsubishi Heavy Industries, Ltd. Exhaust purge device for gas internal combustion engine
US20150107242A1 (en) * 2013-10-18 2015-04-23 GM Global Technology Operations LLC Exhaust system with post-operation cooling for a vehicle, and a method thereof
US9267410B2 (en) 2014-01-14 2016-02-23 Caterpillar Inc. Injector cooling apparatus
CN107636270A (zh) * 2015-05-11 2018-01-26 Ge延巴赫两合无限公司 用于冲洗废气净化系统的方法
WO2017155444A1 (en) * 2016-03-07 2017-09-14 Scania Cv Ab Fuel system for an internal combustion engine and a method to increase the vaporization temperature of a fuel used in a fuel system
US11536177B2 (en) * 2018-01-16 2022-12-27 Carrier Corporation Exhaust gas temperature control
US20230212963A1 (en) * 2020-07-09 2023-07-06 Jaguar Land Rover Limited Valve seat injector
US11959405B2 (en) * 2020-07-09 2024-04-16 Jaguar Land Rover Limited Valve seat injector

Also Published As

Publication number Publication date
EP1808582A1 (de) 2007-07-18
EP1808582B1 (de) 2010-07-28
DE602006015766D1 (de) 2010-09-09

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