EP2191125B1 - Verfahren zur bewertung der umleitungsklappe eines austauschers in einem abgasrückführungssystem - Google Patents
Verfahren zur bewertung der umleitungsklappe eines austauschers in einem abgasrückführungssystem Download PDFInfo
- Publication number
- EP2191125B1 EP2191125B1 EP08837336.0A EP08837336A EP2191125B1 EP 2191125 B1 EP2191125 B1 EP 2191125B1 EP 08837336 A EP08837336 A EP 08837336A EP 2191125 B1 EP2191125 B1 EP 2191125B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- egr
- exchanger
- temperature
- mode
- tsegr
- 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.)
- Not-in-force
Links
Images
Classifications
-
- 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
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
-
- 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
- F02M26/13—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
-
- 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
- F02M26/49—Detecting, diagnosing or indicating an abnormal function of the EGR system
-
- 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/0065—Specific aspects of external EGR control
- F02D2041/0067—Determining the EGR temperature
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
- F02D41/0055—Special engine operating conditions, e.g. for regeneration of 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
-
- 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
Definitions
- the present invention relates to a method for diagnosing a failure of the EGR circuit of an engine, specifically the blocking of the bypass flap of the EGR exchanger.
- the bypass flap is a key element of the exhaust gas recirculation system (designated by the acronym EGR - Exhaust Gas Recirculation according to the English terminology).
- the proper functioning of the shutter thus makes it possible to guarantee the depollution of the current diesel engines.
- the blocking of the shutter in bypass mode or in cooled mode has direct consequences on the pollution emitted at the output of the engine.
- the risk associated with blocking the flap is also not related solely to pollution. Indeed, a failure of the shutter can have consequences on the reliability of the surrounding components (degradation due to a too high temperature of the EGR valve and its support) and the integrity of the engine control strategies that use it (such as example that the cleaning of the valve and the exchanger, or the priming of the catalyst).
- a first method uses a temperature sensor located at the entrance of the intake manifold and can diagnose a blockage of the flap by measuring the temperature difference between the cool mode and bypass mode.
- this method requires the actuation of the shutter to be able to perform the diagnosis.
- it does not detect the position in which the shutter has blocked; however, the blocking in bypass or cooled mode does not have the same impact on pollution and we want to act differently in these two cases.
- this process seems relatively imprecise because the temperature sensor located at the inlet of the inlet distributor is influenced by the fresh air admitted.
- Another process described in the document JP 2003-247459 , implements a strategy based on the monitoring of the air flow before and after the activation of the bypass flap, the air intake flap and the EGR valve being completely open.
- the advantage of this solution is that it simply uses the flowmeter located on the fresh air intake duct.
- this strategy can generate a significant rate of false detections, due to the EGR environment (high temperature, fouling of the connectors) and the limited reactivity of the shutter control. Indeed, pressure wave phenomena delay the vacuum control of the bypass flap. In addition, it requires an intrusion into the operation of the engine, since it requires to open the air intake flap and the EGR valve.
- the document US-2006/0042608 describes in particular a method for diagnosing the operation of an EGR circuit.
- the document JP-2008144609 describes a method for diagnosing a failure of the EGR circuit of an internal combustion engine and more particularly of the flap regulating the distribution of the exhaust gases between the EGR exchanger and a bypass duct of the exchanger or bypass .
- An object of the invention is therefore to define a simple and reliable, non-intrusive method for detecting any failure of the bypass flap and, where appropriate, the position in which it has blocked. This method must also make it possible to diagnose a total loss of the cooling function.
- an engine compartment comprises an internal combustion engine 10, supplied with fresh air by an intake duct 11 and releasing its exhaust gas through an exhaust duct 12.
- this engine compartment is also provided with a turbocharger 50 comprising a compressor 51 disposed on the intake duct 11 for compressing the air coming from the duct 53.
- cooling means 40 and a shutter 30 are provided between the compressor 51 and the engine 10. The air which reaches the engine 10 is cold.
- the turbine 52 of the turbocharger 50 is located at the end of the duct exhaust pipe 12 and is coupled to the compressor 51. The exhaust gas is then discharged from the engine compartment via a pipe 54.
- the engine compartment further comprises an exhaust gas recirculation circuit (also called EGR circuit 20), the inlet 28 of which is connected to the exhaust duct 12 and whose outlet 29 is connected to the intake duct 11.
- This EGR circuit 20 comprises an EGR cooler or exchanger 22 connected to the inlet 28 via an upstream pipe 25 and to the outlet 29 via a downstream pipe 27, enabling the exhaust gases to be cooled before being reinjected into the engine 10 .
- a bypass pipe 24 connected, in its upstream part, to a solenoid valve 23 located upstream of the EGR exchanger 22, and in its downstream part, at the outlet of the exchanger 22.
- the solenoid valve 23 comprises a flap 23a which, depending on its position, allows a desired quantity of exhaust gas to pass through the bypass duct 24.
- An EGR valve 21 is further provided at the outlet of the circuit 20 so as to regulate the amount of exhaust gas reinjected into the engine 10.
- the figure 2 represents an EGR exchanger 22 with an integrated bypass duct 24. If the flap 23a is closed, all the hot exhaust gases (solid arrow) pass into the EGR exchanger where they are cooled (hatched arrows): this is called “cooled mode”. If against the flap 23a is open, at least a portion of the exhaust gas pass into the bypass duct 24 and are not cooled: it is called “bypass mode”. It is therefore understood that the temperature TsEGR of the exhaust gas at the outlet of the exchanger 22 is higher in bypass mode (TsEGR2) than in cooled mode (TsEGR1).
- the diagnostic strategy is based on measuring or estimating the temperature at the outlet of the EGR exchanger 22. This Depending on the case, the temperature may be measured upstream or downstream of the EGR valve 21.
- the strategy is based on calculating the difference between the estimated TsEGR in bypass mode (denoted TsEGR est-byp ) and the measured TsEGR (denoted TsEGR mes ).
- the filling efficiency is determined by means of the temperature Tcol and the pressure Pcol in the intake manifold; these values are given by sensors located in the intake manifold.
- TsEGR est_byp ⁇ 3 ⁇ Tco + 1 - ⁇ 3 ⁇ Tavt ⁇ 1 - ⁇ 2 + ⁇ 2 ⁇ ⁇ 1 ⁇ Tco - Tavt + Tavt
- TsEGR temperature sensors
- the blocking causes of the flap 23a may be a mechanical seizure, the disconnection of the hose of the bypass solenoid valve 23 or a control problem.
- DTC Diagnostic Trouble Code
- OBD On Board Diagnosis
- a degraded mode is activated, consisting in closing the EGR valve 21 in order to reduce the temperature at its terminals.
- This strategy is implemented in the engine control unit (ECU).
- the figure 5 illustrates the case of a functional component.
- the curve C1 in the form of a slot corresponds to the state of the control of the bypass flap: the high value corresponds to the bypass mode, the low value corresponds to the cooled mode.
- the curve C2 in the form of a slot corresponds to the diagnostic condition: the high values correspond to the diagnostic phases.
- the EGR circuit is in bypass mode and the temperature difference ⁇ bm is lower than the detection threshold in bypass mode S bm : the flap is therefore considered to be functional.
- the EGR circuit is in cooled mode, and the temperature difference ⁇ cm is greater than the detection threshold in cooled mode S cm : the flap is thus detected as functional.
- Curves C1 and C2 are defined in the same way as in the figure 5 .
- the EGR circuit is in bypass mode.
- the temperature difference ⁇ bm remains higher than the detection threshold in bypass mode S bm during a duration Tbm: the shutter is thus considered as blocked in cooled mode.
- Curves C1 and C2 are defined in the same way as in figures 5 and 6 .
- the EGR circuit is in bypass mode. Since the temperature difference ⁇ bm is less than S bm , the flap is considered functional.
- the use for the diagnosis of a temperature sensor at the outlet of the EGR exchanger improves the reliability of detection of the process.
- this temperature sensor can advantageously be used, as needed, for other diagnostic purposes.
- the method according to the invention makes it possible to detect a total loss of the cooling function; failures leading to this loss - for example, a water leak - are however rarer.
- the method of the invention also has the advantage of not being intrusive, that is to say that it does not require actuating the bypass flap for check its functionality.
- the implementation of this method does not cause additional pollution.
- this strategy makes it possible to know the position in which the bypass pane is blocked: this information is necessary for the proper operation of the degraded mode (ie only if the pane is blocked in bypass mode), which represents an additional gain in terms of depollution.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Claims (4)
- Verfahren zum Diagnostizieren des Ausfalls eines AGR-Kreises (20) eines Motors, der einen AGR-Tauscher (22), ein AGR-Ventil (21), eine Abzweigleitung (24) des AGR-Tauschers und eine sogenannte Umgehungsklappe (23a), die stromaufseitig des AGR-Tauschers (22) und der Abzweigleitung (24) angeordnet ist, umfasst, derart, dass der Anteil der Abgase, die sich durch sie bewegen, reguliert wird, wobei der AGR-Kreis (20) gemäß einer Kühlungsbetriebsart, in der die Klappe (23a) geschlossen ist, und gemäß einer Umgehungsbetriebsart, in der die Klappe (23a) geöffnet ist, aktiviert werden kann,
dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:- Schätzen der Temperatur (TsEGRest_byp) am Ausgang des AGR-Tauschers (22), wenn der AGR-Kreis (20) in der Umgehungsbetriebsart ist,- Messen der Temperatur (TsEGRmes) der Abgase am Ausgang des AGR-Tauschers (22),- Berechnen des Abstands zwischen der geschätzten Temperatur (TsEGRest_byp) und der gemessenen Temperatur (TsEGRmes),- Vergleichen des Abstands mit einem ersten vorgegebenen Schwellenwert (Sbm) oder mit einem zweiten vorgegebenen Schwellenwert (Scm), derart, dass:und dass, um die Temperatur (TsEGRest_byp) der Abgase am Ausgang des Tauschers (22) zu schätzen, wenn der AGR-Kreis (20) in der Umgehungsbetriebsart ist, drei Wirkungsgrade als Funktion des Durchflusses der Abgase (QEGR) berechnet werden, die durch die folgenden Formeln gegeben sind:• dann, wenn der AGR-Kreis (20) in der Umgehungsbetriebsart ist und der Abstand größer als der erste Schwellenwert (Sbm) ist, eine Blockierung der Klappe (23a) in der Kühlungsbetriebsart detektiert wird, und• dann, wenn der AGR-Kreis (20) in der Kühlungsbetriebsart ist und der Abstand kleiner als der zweite Schwellenwert (Scm) ist, eine Blockierung der Klappe (23a) in der Umgehungsbetriebsart detektiert wird,- wobei- Tint die Temperatur der Abgase am Eingang des AGR-Kreises (20) ist,- Tco die Temperatur des Kühlungsfluids des AGR-Tauschers (22) ist,- Tavt die Temperatur der Abgase stromaufseitig des AGR-Kreises (20) ist,- TeEGR die Temperatur der Abgase am Eingang des AGR-Tauschers (22) ist. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass dann, wenn die Klappe (23a) in der Umgehungsbetriebsart blockiert ist, das AGR-Ventil (21) geschlossen wird.
- Vorrichtung für die Diagnose des Ausfalls eines AGR-Kreises (20) eines Motors, der einen AGR-Tauscher (22), ein AGR-Ventil (21), eine Abzweigleitung (24) des AGR-Tauschers und eine sogenannte Umgehungsklappe (23a), die stromaufseitig des AGR-Tauschers (22) und der Abzweigleitung (24) angeordnet ist, umfasst, derart, dass der Anteil der Abgase, die sich durch sie bewegen, reguliert wird, wobei der AGR-Kreis (20) gemäß einer Kühlungsbetriebsart, in der die Klappe (23a) geschlossen ist, und gemäß einer Umgehungsbetriebsart, in der die Klappe (23a) geöffnet ist, aktiviert werden kann,
dadurch gekennzeichnet, dass sie Folgendes umfasst:- ein Mittel zum Schätzen der Temperatur (TsEGRest_byp) der Abgase am Ausgang des AGR-Tauschers (22), wenn der AGR-Kreis (20) in der Umgehungsbetriebsart ist,- ein Mittel zum Messen der Temperatur (TsEGRmes) der Abgase am Ausgang des AGR-Tauschers (22),- ein Mittel zum Berechnen des Abstands zwischen der geschätzten Temperatur (TsEGRest_byP) und der gemessenen Temperatur (TsEGRmes) und- ein Mittel zum Vergleichen des Abstands mit einem ersten vorgegebenen Schwellenwert (Sbm) oder mit einem zweiten vorgegebenen Schwellenwert (Scm), derart, dass dann,und dass sie außerdem Folgendes umfasst:• wenn der AGR-Kreis (20) in der Umgehungsbetriebsart ist und der Abstand größer als der erste Schwellenwert (Sbm) ist, die Vorrichtung eine Blockierung der Klappe (23a) in der Kühlungsbetriebsart detektiert und dann,• wenn der AGR-Kreis (20) in der Kühlungsbetriebsart ist und der Abstand kleiner als der zweite Schwellenwert (Scm) ist, die Vorrichtung eine Blockierung der Klappe (23a) in der Umgehungsbetriebsart detektiert,- ein Mittel zum Messen der Temperatur (Tco) des Kühlungsfluids des AGR-Tauschers (22) und- ein Mittel zum Messen der Temperatur (Tavt) der Abgase stromaufseitig des AGR-Kreises (20).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0757714A FR2921426B1 (fr) | 2007-09-20 | 2007-09-20 | Procede de diagnostic du volet de derivation de l'echangeur dans un systeme de recirculation des gaz d'echappement |
PCT/FR2008/051689 WO2009047465A2 (fr) | 2007-09-20 | 2008-09-19 | Procede de diagnostic du volet de derivation de l'echangeur dans un systeme de recirculation des gaz d'echappement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2191125A2 EP2191125A2 (de) | 2010-06-02 |
EP2191125B1 true EP2191125B1 (de) | 2017-06-14 |
Family
ID=39402754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08837336.0A Not-in-force EP2191125B1 (de) | 2007-09-20 | 2008-09-19 | Verfahren zur bewertung der umleitungsklappe eines austauschers in einem abgasrückführungssystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100307231A1 (de) |
EP (1) | EP2191125B1 (de) |
JP (1) | JP2010539390A (de) |
FR (1) | FR2921426B1 (de) |
WO (1) | WO2009047465A2 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8342015B2 (en) | 2007-09-20 | 2013-01-01 | Renault S.A.S. | Method for diagnosing the exchanger bypass flap in an exhaust gas recirculation circuit |
FR2938016B1 (fr) * | 2008-10-30 | 2010-10-29 | Renault Sas | Procede d'estimation dynamique du debit d'air frais alimentant un moteur avec circuits egr haute et basse pression |
JP5251844B2 (ja) * | 2009-11-24 | 2013-07-31 | トヨタ自動車株式会社 | 冷却装置の異常判定装置および冷却装置の異常判定方法 |
US9127606B2 (en) * | 2010-10-20 | 2015-09-08 | Ford Global Technologies, Llc | System for determining EGR degradation |
US9476387B2 (en) * | 2011-05-13 | 2016-10-25 | Ford Global Technologies, Llc | System for determining EGR cooler degradation |
SE537803C2 (sv) * | 2011-09-30 | 2015-10-20 | Scania Cv Ab | EGR-kylare samt förbränningsmotor med en sådan EGR-kylare |
US9670830B2 (en) * | 2014-10-29 | 2017-06-06 | GM Global Technology Operations LLC | Method and apparatus for monitoring a coolant system for an exhaust gas recirculation system |
KR101896326B1 (ko) * | 2016-09-09 | 2018-09-07 | 현대자동차 주식회사 | 수냉식 이지알 쿨러 |
US20180128145A1 (en) * | 2016-11-09 | 2018-05-10 | Ford Global Technologies, Llc | Method and system for an exhaust diverter valve |
DE102017210714A1 (de) | 2017-06-26 | 2018-12-27 | Wafios Aktiengesellschaft | Verfahren zur Herstellung eines Biegeteils und Biegemaschine zur Durchführung des Verfahrens |
US11881093B2 (en) | 2020-08-20 | 2024-01-23 | Denso International America, Inc. | Systems and methods for identifying smoking in vehicles |
US11932080B2 (en) | 2020-08-20 | 2024-03-19 | Denso International America, Inc. | Diagnostic and recirculation control systems and methods |
US11828210B2 (en) | 2020-08-20 | 2023-11-28 | Denso International America, Inc. | Diagnostic systems and methods of vehicles using olfaction |
US11760170B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Olfaction sensor preservation systems and methods |
US11813926B2 (en) | 2020-08-20 | 2023-11-14 | Denso International America, Inc. | Binding agent and olfaction sensor |
US11760169B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Particulate control systems and methods for olfaction sensors |
US11636870B2 (en) | 2020-08-20 | 2023-04-25 | Denso International America, Inc. | Smoking cessation systems and methods |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008144609A (ja) * | 2006-12-06 | 2008-06-26 | Isuzu Motors Ltd | Egrシステムの故障判定方法及びegrシステムの故障判定システム |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6085732A (en) * | 1999-01-25 | 2000-07-11 | Cummins Engine Co Inc | EGR fault diagnostic system |
JP2003336549A (ja) * | 2002-05-20 | 2003-11-28 | Denso Corp | 内燃機関のegr装置 |
JP3751930B2 (ja) * | 2002-11-01 | 2006-03-08 | トヨタ自動車株式会社 | 内燃機関のegrガス温度推定装置 |
JP4498831B2 (ja) * | 2004-06-15 | 2010-07-07 | トヨタ自動車株式会社 | 内燃機関の排気循環装置 |
DE102004041767A1 (de) * | 2004-08-28 | 2006-03-02 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine mit Abgasrückführung |
JP2006242080A (ja) * | 2005-03-02 | 2006-09-14 | Denso Corp | 排気還流装置の異常診断装置 |
JP4538363B2 (ja) * | 2005-04-14 | 2010-09-08 | 本田技研工業株式会社 | 内燃機関のegr装置 |
FR2908825B1 (fr) * | 2006-11-17 | 2009-01-30 | Renault Sas | Estimation d'une temperature de gaz d'echappement en sortie d'un circuit egr d'un moteur a combustion |
US8342015B2 (en) * | 2007-09-20 | 2013-01-01 | Renault S.A.S. | Method for diagnosing the exchanger bypass flap in an exhaust gas recirculation circuit |
US7918129B2 (en) * | 2008-05-27 | 2011-04-05 | GM Global Technology Operations LLC | Diagnostic systems for cooling systems for internal combustion engines |
-
2007
- 2007-09-20 FR FR0757714A patent/FR2921426B1/fr not_active Expired - Fee Related
-
2008
- 2008-09-19 US US12/679,197 patent/US20100307231A1/en not_active Abandoned
- 2008-09-19 JP JP2010525412A patent/JP2010539390A/ja active Pending
- 2008-09-19 EP EP08837336.0A patent/EP2191125B1/de not_active Not-in-force
- 2008-09-19 WO PCT/FR2008/051689 patent/WO2009047465A2/fr active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008144609A (ja) * | 2006-12-06 | 2008-06-26 | Isuzu Motors Ltd | Egrシステムの故障判定方法及びegrシステムの故障判定システム |
Also Published As
Publication number | Publication date |
---|---|
WO2009047465A3 (fr) | 2009-06-04 |
JP2010539390A (ja) | 2010-12-16 |
EP2191125A2 (de) | 2010-06-02 |
FR2921426B1 (fr) | 2014-02-14 |
WO2009047465A2 (fr) | 2009-04-16 |
US20100307231A1 (en) | 2010-12-09 |
FR2921426A1 (fr) | 2009-03-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2191125B1 (de) | Verfahren zur bewertung der umleitungsklappe eines austauschers in einem abgasrückführungssystem | |
EP2761151B1 (de) | DIAGNOSEVERFAHREN UND SYSTEM FÜR EINe Brennkraftmaschine zweistufiger Aufladung | |
FR2919677A1 (fr) | Procede et dispositif de gestion d'un moteur a combustion interne | |
EP2361349B1 (de) | Verfahren zur dynamischen schätzung der frischluftdurchflussrate, die einem motor mit hochdruck- und niederdruck-agr-kreisen zugeführt wird. | |
EP3234326B1 (de) | Diagnoseverfahren für ein abgasrückführsystem eines kraftfahrzeugmotors | |
FR2923262A1 (fr) | Procede et dispositif de diagnostic de l'etat d'un systeme de commande a ailettes mobiles de la turbine d'un turbocompresseur | |
EP1903203B1 (de) | Vorrichtung und Verfahren zur Feststellung einer Panne in einem Luftaufladungssystem eines Motors | |
FR2921432A1 (fr) | Procede de diagnostic d'une defaillance d'un organe du dispositif egr d'un moteur a combustion interne | |
FR2884862A1 (fr) | Procede et dispositif le diagnostic de l'etat de fonctionnement d'une ligne d'echappement d'un moteur a combustion interne | |
FR2921425A1 (fr) | Procede de diagnostic du volet de derivation de l'echangeur dans un circuit de recirculation des gaz d'echappement | |
FR2937379A1 (fr) | Procede de diagnostic de l'etat d'un dispositif de suralimentation a turbocompresseur d'un moteur thermique de vehicule automobile | |
US8342015B2 (en) | Method for diagnosing the exchanger bypass flap in an exhaust gas recirculation circuit | |
EP1798403A1 (de) | Verfahren zur Schätzung der Temperatur von Abgasen vor einer Turbine | |
FR2981987A1 (fr) | Commande d'un moteur a combustion interne | |
WO2009133281A1 (fr) | Systeme et procede de diagnostic de l'etat de fonctionnement d'un dispositif d'admission en gaz d'echappement pour moteur a combustion interne de vehicule automobile | |
FR2952969A1 (fr) | Moteur a combustion interne comportant un circuit de recirculation partielle des gaz d'echappement a basse pression et procede de commande | |
EP2914827B1 (de) | Kühlverwaltung für motorsystem mit einer partiellen abgasrückführungsvorrichtung | |
EP3353405B1 (de) | Vorrichtung zur kühlung einer abgasrückführungsschleife eines kraftfahrzeugmotors | |
EP2956656B1 (de) | Verfahren zur regelung eines steuerventils zur steuerung des durchflusses eines kühlmittels zur kühlung der rückgeführten gase einer brennkraftmaschine | |
WO2019229312A1 (fr) | Procédé de diagnostic de fonctionnement d'un turbocompresseur adapte a la gravite de la defaillance | |
FR3028565A1 (fr) | Procede de diagnostic de l'encrassement d'un filtre a air equipant un moteur a combustion interne suralimente | |
FR2900446A1 (fr) | Systeme de recyclage de gaz d'echappement d'un moteur d'un vehicule adapte a evacuer un element present dans une vanne de controle d'un circuit de recirculation de gaz d'echappement | |
FR2923867A1 (fr) | Moteur a combustion interne et procede de diagnostic de l'etat de fonctionnement d'un volet de by-pass pour un systeme de recirculation partielle des gaz d'echappement. | |
FR3013078A1 (fr) | Procede de controle du fonctionnement d'une vanne de recirculation de gaz d'echappement, notamment pour moteur a combustion interne a allumage commande | |
FR2917782A3 (fr) | Procede et dispositif d'estimation de la temperature en amont d'un catalyseur d'oxydation en fonction de la en amont d'une turbine |
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: 20100319 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20160613 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 602008050695 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: F02M0025070000 Ipc: F02D0041000000 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F02B 77/08 20060101ALI20170125BHEP Ipc: F02D 21/08 20060101ALI20170125BHEP Ipc: F02D 41/22 20060101ALI20170125BHEP Ipc: F02D 41/00 20060101AFI20170125BHEP |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20170303 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 901211 Country of ref document: AT Kind code of ref document: T Effective date: 20170615 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602008050695 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20170614 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170914 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170915 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 901211 Country of ref document: AT Kind code of ref document: T Effective date: 20170614 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170914 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171014 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602008050695 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602008050695 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
26N | No opposition filed |
Effective date: 20180315 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20170919 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20170930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170919 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20180531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180404 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170930 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170919 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170930 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170919 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171002 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20080919 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170614 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170614 |