EP1463880A1 - Procede et appareil pour moteur a combustion interne a pot catalytique et pour moteur diesel - Google Patents

Procede et appareil pour moteur a combustion interne a pot catalytique et pour moteur diesel

Info

Publication number
EP1463880A1
EP1463880A1 EP02791146A EP02791146A EP1463880A1 EP 1463880 A1 EP1463880 A1 EP 1463880A1 EP 02791146 A EP02791146 A EP 02791146A EP 02791146 A EP02791146 A EP 02791146A EP 1463880 A1 EP1463880 A1 EP 1463880A1
Authority
EP
European Patent Office
Prior art keywords
engine
exhaust gases
inlet
uncooled
exhaust
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Withdrawn
Application number
EP02791146A
Other languages
German (de)
English (en)
Inventor
Tommy Bertilsson
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.)
Scania CV AB
Original Assignee
Scania CV AB
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 Scania CV AB filed Critical Scania CV AB
Publication of EP1463880A1 publication Critical patent/EP1463880A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • 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
    • 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
    • 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
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • 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
    • 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
    • F02M26/33—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 controlling the temperature of the recirculated 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
    • 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 invention relates to a method and an apparatus for a combustion engine with a catalyst which is designed to clean engine exhaust gases.
  • the invention also relates to a diesel engine for a heavy vehicle which incorporates such an apparatus.
  • Catalysts are commonly used in today's vehicle engines with the object of reducing various kinds of harmful components in exhaust gases.
  • a problem of today's catalysts for vehicle engines is that they function best within a limited temperature range which constitutes their working range and that they cannot work optimally at temperatures outside that working range. This means that if the catalyst is designed to work within a certain temperature range, its effectiveness will be reduced at temperatures outside that range, thereby leading to increased emissions of harmful substances from the engine.
  • the catalyst will work with reduced effectiveness during those parts of the driving cycle in which the exhaust temperature is such that the working temperature of the catalyst is outside the working range. During those parts of the driving cycle, the discharge of various harmful substances will therefore be increased.
  • Attempts to deal with this problem have inter alia involved devices for providing the catalyst with a separate heating device to ensure that the catalyst works as far as possible within a stated prescribed operating temperature range.
  • that solution entails a relatively expensive device which is sensitive to operational disturbances resulting in increased cost and in sensitivity to operational disturbances.
  • Another solution involves driving with heightened exhaust back-pressure, i.e. by setting an exhaust damper, resulting in increased application of power even when operating at low load, at the cost of causing the vehicle to consume more fuel.
  • One object of the present invention is to indicate a method and a device whereby the problems of the state of the art are eliminated or at least reduced.
  • a particular object of the invention is to provide an economic and operationally reliable solution whereby the catalyst is allowed to work within its working range.
  • the invention is combined advantageously with cooled exhaust gas feedback, which is particularly relevant in high-power driving.
  • a preferred arrangement for making this possible is to incorporate an exhaust cooler which is connected or bypassed respectively to supply cooled or uncooled gases to the engine's inlet. Such an arrangement allows easy and reliable regulation with a minimum of ductwork and valve devices to be adjusted.
  • Fig. 1 depicts schematically a combustion engine with equipment for exhaust gas feedback
  • Fig. 2 depicts a flowchart of a method for exhaust gas feedback.
  • ref. 1 denotes a multi-cylinder turbocharged combustion engine of diesel type, with an exhaust manifold 2 and an inlet manifold 3.
  • the exhaust gases from the exhaust manifold 2 are led via an exhaust line 4 to a catalyst 5 before being discharged to the environment.
  • the engine may for example be intended to power a heavy vehicle.
  • the exhaust gases Upstream from the catalyst 5, the exhaust gases pass through a turbo unit incorporating a turbine 6 which drives a compressor 7 situated in an air inlet line 8 to provide supercharging of the engine.
  • a transfer line 9 for transferring exhaust gases to the inlet side of the engine is situated between the exhaust line 4 and the air inlet line 8.
  • the transfer line 9 is provided with a bypass line 15 which incorporates an exhaust cooler 10 for cooling the gases transferred to the engine, h addition, the line 9 incorporates a section 9a which is situated beside the exhaust cooler 10 and through which exhaust gases can pass from the engine's exhaust side to the engine's inlet side without passing through the exhaust cooler 10.
  • This section which incorporates a controllable valve 11, thus makes it possible to transfer uncooled exhaust gases to the engine's inlet side.
  • the transfer line 9 also incorporates a second valve 12 which is controllable to regulate the whole exhaust gas quantity transferred between the exhaust side and the inlet side of the engine 1.
  • a control unit 13 which in practice may take the form of an integrated part of a control unit for an engine which incorporates an apparatus according to the invention, is designed to regulate the valves 11 and 12 on the basis of measured, calculated or estimated exhaust temperature, and hence the working conditions for the catalyst 5.
  • an exhaust temperature gauge 20 may with advantage be incorporated in the exhaust line 4 downstream from the turbine 6.
  • the control unit 13 has sensors connected to it which deliver signals representative of exhaust temperature 20, accelerator pedal position 21 and engine speed 22. The possibility of other sensors being connected to the control unit 13 is not excluded.
  • Fig.2 illustrates a sequence of a method for regulating the valves 11 and 12 which is performed under the control of the control unit 13:
  • the exhaust temperature is calculated from a value of said momentary fuel quantity.
  • other parameters may also be taken into account, e.g. outside temperature, vehicle speed etc.
  • the exhaust temperature calculated at 16 is compared with a prescribed exhaust temperature range within which a catalyst forming part of the system exhibits optimum or at least good operation. If the exhaust temperature calculated at 16 is found to be below the prescribed range, a control system (13 in Fig. 1) is activated at 18 to supply uncooled exhaust gases to the engine's inlet side.
  • the extent of the exhaust gas temperature range within which the catalyst works well depends on the type of catalyst, how it is dimensioned and how attuned it is to expected operating situations. In the case of diesel engines, particularly those intended for motor vehicles, the exhaust gas temperature during normal miscellaneous operation may range far beyond what a normal catalyst can reasonably be expected to handle with good cleaning results. A normal range typically covers about 200°C for a conventional catalyst for a combustion engine of a heavy vehicle. Exhaust temperatures below or above that range entail impaired effectiveness. Exhaust temperatures above the range may also damage the catalyst, so it is very important that the latter be designed to cope reliably with operating situations in which particularly high exhaust temperatures may be expected.
  • Ref. 19 denotes the end of the sequence.
  • Fig. 2 may be supplemented so that the guidance of exhaust gases to the engine's inlet side can ensure that cooled gases can be transferred in operating conditions which entail high engine load and problems of smoke in exhaust gases, or when necessary for other reasons.
  • valves 11 and 12 are preferably such that the respective valve is either fully open or fully closed, since this type of operation is simpler than the control of proportional valves. According to the invention, however, the possibility of the valves 11 and/or 12 being variably controllable, whether in certain steps or steplessly between fully open and fully closed, is not excluded.
  • catalysts of the kind here intended work optimally within a certain temperature range. This means that their effectiveness is reduced at catalyst temperatures outside that temperature range. Preventing the catalyst being exposed to too high exhaust temperatures is taken care of according to one aspect of the invention by sufficient cooled gases being transferred to the inlet side of the engine to bring the temperature down to the intended level. A function to this effect may also be added to the flowchart in Fig. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

L'invention concerne un procédé et un appareil pour un moteur à combustion interne (1) à pot catalytique (5), pour nettoyer les gaz d'échappement du moteur. Dans des situations de fonctionnement où l'on peut supposer ou observer des températures de catalyseur basses, les gaz d'échappement non refroidis sont acheminés (9) vers l'aspiration (3) du moteur pour limiter le débit massique traversant le moteur. La présente invention porte également sur un moteur diesel monté dans un véhicule de fort tonnage équipé d'un tel appareil.
EP02791146A 2001-11-30 2002-11-27 Procede et appareil pour moteur a combustion interne a pot catalytique et pour moteur diesel Withdrawn EP1463880A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0104037A SE523514C2 (sv) 2001-11-30 2001-11-30 Förfarande och anordning vid en förbränningsmotor med katalysator samt dieselmotor
SE0104037 2001-11-30
PCT/SE2002/002178 WO2003046354A1 (fr) 2001-11-30 2002-11-27 Procede et appareil pour moteur a combustion interne a pot catalytique et pour moteur diesel

Publications (1)

Publication Number Publication Date
EP1463880A1 true EP1463880A1 (fr) 2004-10-06

Family

ID=20286168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02791146A Withdrawn EP1463880A1 (fr) 2001-11-30 2002-11-27 Procede et appareil pour moteur a combustion interne a pot catalytique et pour moteur diesel

Country Status (5)

Country Link
EP (1) EP1463880A1 (fr)
JP (1) JP2005510652A (fr)
AU (1) AU2002365540A1 (fr)
SE (1) SE523514C2 (fr)
WO (1) WO2003046354A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8069650B2 (en) 2005-09-15 2011-12-06 Volvo Lastvagnar Ab Method for internal combustion engine with exhaust recirculation
EP2058495B1 (fr) * 2007-11-12 2013-04-17 FPT Motorenforschung AG Méthode de détermination du débit de carburant correct dans un moteur de véhicule pour mettre en oeuvre des tests de diagnostic
EP2131022B1 (fr) * 2008-06-04 2011-07-13 Iveco Motorenforschung AG Gestion thermique d'un système de post-traitement
WO2010110700A1 (fr) * 2009-03-24 2010-09-30 Volvo Lastvagnar Ab Procédé de régulation de la température de gaz d'échappement
BR112013028392B1 (pt) 2011-05-02 2021-06-22 Volvo Truck Corporation Método e sistema de motor de combustão interna para manutenção de um sistema de póstratamento de gás de exaustão dentro de sua faixa de temperatura de trabalho
WO2014149297A1 (fr) 2013-02-18 2014-09-25 Cummins Inc. Système et appareil de gestion de température de post-traitement
CN106232204A (zh) 2014-02-28 2016-12-14 卡明斯公司 在发动期间管理后处理部件效率
EP3559431B1 (fr) * 2016-12-20 2020-12-09 Volvo Truck Corporation Procédé de commande d'un moteur à combustion interne

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105929A (ja) * 1982-12-10 1984-06-19 Mazda Motor Corp エンジンの吸気装置
JPS61164014A (ja) * 1985-01-14 1986-07-24 Nissan Motor Co Ltd デイ−ゼル機関の排気浄化装置
EP0489263A2 (fr) * 1990-11-06 1992-06-10 Mazda Motor Corporation Système de récirculation de gaz d'échappement pour un moteur à combustion interne
JPH0544454A (ja) * 1991-08-17 1993-02-23 Mitsubishi Heavy Ind Ltd 内燃機関の排気装置
JPH09256915A (ja) * 1996-03-19 1997-09-30 Isuzu Motors Ltd インタークーラー付ディーゼルエンジン用ｅｇｒ装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5423825A (en) * 1977-07-22 1979-02-22 Toyota Motor Corp Exhaust gas recirculator
FR2653493B1 (fr) * 1989-10-25 1991-12-20 Peugeot Amelioration de l'efficacite d'un catalyseur pour moteur diesel suralimente.
EP0596855A1 (fr) * 1992-11-02 1994-05-11 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Moteur à combustion interne à turbocompresseur à gaz d'échappement
US5617726A (en) * 1995-03-31 1997-04-08 Cummins Engine Company, Inc. Cooled exhaust gas recirculation system with load and ambient bypasses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105929A (ja) * 1982-12-10 1984-06-19 Mazda Motor Corp エンジンの吸気装置
JPS61164014A (ja) * 1985-01-14 1986-07-24 Nissan Motor Co Ltd デイ−ゼル機関の排気浄化装置
EP0489263A2 (fr) * 1990-11-06 1992-06-10 Mazda Motor Corporation Système de récirculation de gaz d'échappement pour un moteur à combustion interne
JPH0544454A (ja) * 1991-08-17 1993-02-23 Mitsubishi Heavy Ind Ltd 内燃機関の排気装置
JPH09256915A (ja) * 1996-03-19 1997-09-30 Isuzu Motors Ltd インタークーラー付ディーゼルエンジン用ｅｇｒ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO03046354A1 *

Also Published As

Publication number Publication date
SE0104037L (sv) 2003-05-31
WO2003046354A1 (fr) 2003-06-05
SE523514C2 (sv) 2004-04-27
AU2002365540A1 (en) 2003-06-10
JP2005510652A (ja) 2005-04-21

Similar Documents

Publication Publication Date Title
US5669365A (en) Internal combustion engine with exhaust gas recirculation
JP5665804B2 (ja) ターボチャージャ付き圧縮着火エンジンシステムにおける排気ガス再循環制御方法
US6276139B1 (en) Automotive engine with controlled exhaust temperature and oxygen concentration
US7260933B2 (en) Method for limiting a boost pressure
CN102418608B (zh) 在涡轮增压的发动机系统中控制排气再循环
JP5491028B2 (ja) 排気再循環を行う内燃エンジンのための方法
RU2414618C2 (ru) Способ и устройство контроля наддува воздуха в двигателе внутреннего сгорания
US20100139267A1 (en) Secondary air system for a combustion engine breathing system
US7614231B2 (en) Method and system to operate diesel engine using real time six dimensional empirical diesel exhaust pressure model
JP2001517755A (ja) 燃焼エンジン内の温度値を決定するための方法およびデバイス
CN108425754B (zh) 用于控制内燃机的废气闸板的打开状态的方法和控制装置
WO1998041746A1 (fr) Procede de regulation d'un moteur a combustion lors du demarrage, et moteur utilisant ledit procede
KR20070085768A (ko) 디젤 엔진의 배기정화장치 및 제어장치
JP3714495B2 (ja) 内燃機関制御装置
EP1463880A1 (fr) Procede et appareil pour moteur a combustion interne a pot catalytique et pour moteur diesel
EP2143919A1 (fr) Système de régénération de filtre à particules
JP2001519501A (ja) 燃焼エンジンを制御するための方法およびデバイス
RU2666490C2 (ru) Способ и система обогрева кабины транспортного средства
EP2131022B1 (fr) Gestion thermique d'un système de post-traitement
JP2004521226A (ja) 内燃機関の制御のための方法および装置
JP3511967B2 (ja) パティキュレートフィルタの異常検出装置
KR100789166B1 (ko) 경유 엔진 개조형 배기가스 정화시스템 및 배기가스 정화 방법
KR101360035B1 (ko) 차량의 이지알 유량 보상장치 및 방법
EP1801377A2 (fr) Procédé et système de traitement de gaz d'échappement d'un moteur à combustion interne, système et véhicule équipé de ce système
GB2390642A (en) Turbocharged i.c engine

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 20040630

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17Q First examination report despatched

Effective date: 20070716

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20080320