EP0748930B1 - Verfahren zum Erkennen von Betriebsstörungen in einer Kraftstoffeinspritzanlage einer Brennkraftmaschine - Google Patents
Verfahren zum Erkennen von Betriebsstörungen in einer Kraftstoffeinspritzanlage einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP0748930B1 EP0748930B1 EP96106869A EP96106869A EP0748930B1 EP 0748930 B1 EP0748930 B1 EP 0748930B1 EP 96106869 A EP96106869 A EP 96106869A EP 96106869 A EP96106869 A EP 96106869A EP 0748930 B1 EP0748930 B1 EP 0748930B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- internal combustion
- combustion engine
- fuel injection
- detected
- 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.)
- Expired - Lifetime
Links
Images
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
- F02D41/22—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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
-
- 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
- F02D2041/224—Diagnosis of the fuel system
-
- 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
- F02D2041/224—Diagnosis of the fuel system
- F02D2041/225—Leakage detection
-
- 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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/31—Control of the fuel pressure
Definitions
- the invention relates to a method for recognizing Malfunctions in a fuel injection system Internal combustion engine according to the preamble of claim 1 specified features.
- a method is known from EP 0 501 459 A2 in which a high pressure fuel pump under high pressure in a for common supply line provided for all nozzles (Common Rail) is promoted.
- this injection system are means for Detection of operational malfunctions used, e.g. faulty working high pressure pumps can be determined.
- JP-A-62 13051 describes a method for identifying malfunctions known in a fuel injection system, at that between two injection processes of at least two given At any time the pressure applied is recorded and at If a pressure difference occurs the leakage is determined.
- the determination of the pressure curve can be difficult or even be faulty if the fuel volumes between the pressure pump and the nozzles or injectors are small. In this case the system pressure is strongly influenced by reflection waves. Moreover the pressure control in the system would have small leaks want to compensate for this by increasing the delivery capacity of the pressure pump.
- the invention is therefore based on the object, if present small fuel volumes between pressure pumps and injectors through special measures a safe control over occurring Leakage of components in the fuel injection system to enable.
- a fuel injection system 1 is a multi-cylinder Internal combustion engine 2 shown, which consists essentially of a Demand-controlled high-pressure pump 3 and from an injection line system 4 with one for all solenoid valve controlled Nozzles or injectors 5,6,7,8 provided common High pressure supply line 9 exists.
- a pressure sensor designated 10 measures the actual pressure in the High pressure supply line 9. Deviations from the target pressure in the respective operating area are identified by an electronic Control unit 11 compensated by a controlled adjusting member 12 regulates the predetermined pressure on the high-pressure pump 3.
- the pressure sensor 10 is not only used to regulate the high-pressure control circuit for maintaining a certain pressure level, but is also used to determine leaks in the high-pressure-side line system.
- the pressure sensor 10 detects the respective pressure at the predetermined times t 1 and t2 (FIG. 2).
- the time t 1 can be selected after the transition to overrun at the earliest within the second revolution of the crankshaft for determining the rail pressure.
- the first revolution of the crankshaft can be used to calm the pressure fluctuations in the system.
- the rail pressure is measured at several points in time, for example within ten revolutions of the crankshaft, and the pressure drop rate is determined from the measurements, which is displayed as a fault when a certain limit value is exceeded.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Fig. 1
- eine Kraftstoffeinspritzanlage mit einer Druckversorgungsleitung als gemeinsame Hochdruckversorgungsleitung für alle magnetventilgesteuerten Düsen bzw. Injektoren,
- Fig. 2
- in einem Diagramm den Druckverlauf bei undichtem System im Schubbetrieb, bei dem die Förderung und die Einspritzung abgeschaltet ist.
Claims (2)
- Verfahren zum Erkennen von Betriebsstörungen in einer Kraftstoffeinspritzanlage, bei dem von einer Druckpumpe Kraftstoff in eine Druckversorgungsleitung gefördert und Zylindern einer Brennkraftmaschine zugeordneten Düsen zur Einspritzung zugeführt wird,
dadurch gekennzeichnet,
daß im Schubbetrieb der Brennkraftmaschine bei abgeschalteten Düsen (5-8) und Nullförderung der Hochdruckpumpe (3) der an mindestens zwei vorgegebenen Zeitpunkten (t1;t2) jeweils anliegende Druck erfaßt und die ermittelte Druckdifferenz erst bei Überschreiten eines definierten Grenzwertes als Störung angezeigt wird und daß die Zeitpunkte (t1;t2) zur Druckerfassung frühestens ab der zweiten Umdrehung der Kurbelwelle nach dem Übergang in den Schubbetrieb gelegt werden. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß die Zeitpunkte (t1;t2) mindestens innerhalb einer Umdrehung der Kurbelwelle, vorzugsweise innerhalb von zehn Umdrehungen erfaßt werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19521791A DE19521791A1 (de) | 1995-06-15 | 1995-06-15 | Verfahren zum Erkennen von Betriebsstörungen in einer Kraftstoffeinspritzanlage einer Brennkraftmaschine |
DE19521791 | 1995-06-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0748930A2 EP0748930A2 (de) | 1996-12-18 |
EP0748930A3 EP0748930A3 (de) | 1998-01-14 |
EP0748930B1 true EP0748930B1 (de) | 2000-08-09 |
Family
ID=7764443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96106869A Expired - Lifetime EP0748930B1 (de) | 1995-06-15 | 1996-05-02 | Verfahren zum Erkennen von Betriebsstörungen in einer Kraftstoffeinspritzanlage einer Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
US (1) | US5708202A (de) |
EP (1) | EP0748930B1 (de) |
DE (2) | DE19521791A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101644220B (zh) * | 2007-06-12 | 2012-09-19 | 通用汽车环球科技运作公司 | 车载燃料喷射器测试 |
Families Citing this family (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19703891B4 (de) * | 1997-02-03 | 2008-07-31 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Erkennung einer Leckage |
EP0860600B1 (de) * | 1997-02-21 | 2003-09-17 | Toyota Jidosha Kabushiki Kaisha | Kraftstoffeinspritzsystem für eine Brennkraftmaschine |
DE19720378C2 (de) * | 1997-05-15 | 2002-03-14 | Daimler Chrysler Ag | Verfahren zur Bestimmung der Öffnungszeit eines Einspritzventiles einer Hochdruckspeicher-Einspritzanlage |
DE19727794C1 (de) * | 1997-06-30 | 1999-01-28 | Siemens Ag | Verfahren zum Überprüfen einer Kraftstoffversorgung |
DE19731102C2 (de) * | 1997-07-19 | 2003-02-06 | Bosch Gmbh Robert | System zum Betreiben eines Kraftstoffversorgungssystems für eine Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
DE19740608C2 (de) * | 1997-09-16 | 2003-02-13 | Daimler Chrysler Ag | Verfahren zur Bestimmung einer kraftstoffeinspritzbezogenen Kenngröße für einen Verbrennungsmotor mit Hochdruckspeicher-Einspritzanlage |
JP3709065B2 (ja) * | 1997-12-25 | 2005-10-19 | 株式会社日立製作所 | エンジン燃料供給装置 |
JP4158272B2 (ja) * | 1999-03-26 | 2008-10-01 | トヨタ自動車株式会社 | 高圧燃料噴射系の異常判定方法 |
DE10061855C2 (de) * | 2000-12-12 | 2003-05-22 | Bosch Gmbh Robert | Verfahren, Computerprogramm und Steuer- und/oder Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Brennkraftmaschine |
JP4184657B2 (ja) * | 2001-12-26 | 2008-11-19 | セイコーインスツル株式会社 | 圧力測定装置 |
DE10351893A1 (de) * | 2003-11-06 | 2005-06-09 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine |
FI118054B (fi) * | 2004-04-16 | 2007-06-15 | Waertsilae Finland Oy | Menetelmä kaasumoottorin käyttämiseksi |
DE102005004423B3 (de) * | 2005-01-31 | 2006-06-14 | Siemens Ag | Verfahren zum Überwachen der Funktionsfähigkeit eines Kraftstoffeinspritzsystems |
JP4438712B2 (ja) | 2005-07-25 | 2010-03-24 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
US7392792B2 (en) | 2006-08-21 | 2008-07-01 | Caterpillar Inc. | System for dynamically detecting fuel leakage |
JP4355346B2 (ja) * | 2007-05-21 | 2009-10-28 | 三菱電機株式会社 | 内燃機関の制御装置 |
GB2449706A (en) * | 2007-06-01 | 2008-12-03 | Scania Cv Ab | Identifying a Malfunctioning Fuel Injector |
US7650779B2 (en) * | 2007-06-05 | 2010-01-26 | Caterpillar Inc. | Method and apparatus for determining correct installation for gear-driven fuel pump on a fuel injected IC engine |
DE102007028900B4 (de) * | 2007-06-22 | 2013-06-27 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Diagnose eines mit einer Kraftstoffverteilerleiste in Verbindung stehenden Einspritzventils einer Brennkraftmaschine |
DE102007052451B4 (de) * | 2007-11-02 | 2009-09-24 | Continental Automotive Gmbh | Verfahren zum Bestimmen der aktuellen Dauerleckagemenge einer Common-Rail-Einspritzanlage und Einspritzanlage für eine Brennkraftmaschine |
DE102008016662A1 (de) * | 2008-04-01 | 2009-10-15 | Continental Automotive Gmbh | Verfahren und Einrichtung zum Einspritzen von Kraftstoff in einen Kraftfahrzeugmotor |
US8332130B2 (en) * | 2008-09-30 | 2012-12-11 | Dale Arden Stretch | Leak detection system |
US7980120B2 (en) * | 2008-12-12 | 2011-07-19 | GM Global Technology Operations LLC | Fuel injector diagnostic system and method for direct injection engine |
US7938101B2 (en) * | 2009-02-11 | 2011-05-10 | GM Global Technology Operations LLC | Adaptive control of fuel delivery in direct injection engines |
JP2011163220A (ja) * | 2010-02-10 | 2011-08-25 | Denso Corp | 燃料供給システムの制御装置 |
US8554454B2 (en) * | 2010-05-20 | 2013-10-08 | Cummins Inc. | Service bay high pressure common rail injector performance test |
US8511275B2 (en) | 2010-10-01 | 2013-08-20 | General Electric Company | Method and system for a common rail fuel system |
IT1402820B1 (it) * | 2010-11-10 | 2013-09-27 | Magneti Marelli Spa | Metodo per determinare la legge di iniezione di un iniettore di carburante |
EP2453124A1 (de) * | 2010-11-16 | 2012-05-16 | Delphi Technologies Holding S.à.r.l. | Verfahren zur Bestimmung der Einspritzparameter eines Injektors |
DE102010054736A1 (de) | 2010-12-16 | 2012-06-21 | Daimler Ag | Dampfkraftanlage für ein Kraftfahrzeug |
DE102011075870A1 (de) * | 2011-05-16 | 2012-11-22 | Robert Bosch Gmbh | Verfahren zum Bewerten der Funktionsfähigkeit eines Kraftstoffeinspritzsystems einer Brennkraftmaschine |
DE102011082459B4 (de) * | 2011-09-09 | 2013-11-07 | Continental Automotive Gmbh | Verfahren zur Analyse des Wirkungsgrades der Hochdruckpumpe eines Kraftstoffeinspritzsystems |
JP5774521B2 (ja) | 2012-02-28 | 2015-09-09 | 株式会社デンソー | 燃料漏れ検出装置 |
DE102012203097B3 (de) * | 2012-02-29 | 2013-04-11 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Bestimmen eines Fehlers einer Druckmessung in einem Druckbehälter |
CA2794117C (en) * | 2012-10-31 | 2013-11-12 | Westport Power Inc. | Method and system for detecting and diagnosing a gaseous fuel leak in a dual fuel internal combustion engine system |
CN102996311B (zh) * | 2012-12-04 | 2014-09-24 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | 电控共轨喷油器回油故障诊断方法及系统 |
CN103321809B (zh) * | 2013-07-08 | 2015-07-08 | 潍柴动力股份有限公司 | 喷油器故障检查方法及装置 |
JP6381970B2 (ja) * | 2014-05-30 | 2018-08-29 | 日立オートモティブシステムズ株式会社 | 燃料噴射装置の駆動装置 |
US9657653B2 (en) | 2014-06-09 | 2017-05-23 | Caterpillar Inc. | Gas pressure high and low detection |
US9663096B2 (en) | 2015-02-20 | 2017-05-30 | Ford Global Technologies, Llc | Methods and systems for mitigating fuel injector leak |
DE102015207961B4 (de) * | 2015-04-29 | 2017-05-11 | Mtu Friedrichshafen Gmbh | Verfahren zum Erkennen einer Dauereinspritzung im Betrieb einer Brennkraftmaschine, Einspritzsystem für eine Brennkraftmaschine und Brennkraftmaschine |
CN107120164A (zh) * | 2016-02-24 | 2017-09-01 | 罗伯特·博世有限公司 | 车辆scr系统的喷射器的故障诊断方法和装置 |
CN110219759B (zh) * | 2019-08-02 | 2020-01-03 | 潍柴动力股份有限公司 | 一种喷油器的静态泄漏测量方法、装置及系统 |
CN110657037B (zh) * | 2019-09-29 | 2021-12-17 | 潍柴西港新能源动力有限公司 | 检测天然气发动机供气系统泄漏的方法 |
CN110714847A (zh) * | 2019-09-29 | 2020-01-21 | 潍柴西港新能源动力有限公司 | 一种天然气发动机供气系统的泄漏检测方法 |
US11261766B1 (en) | 2020-11-30 | 2022-03-01 | Ford Global Technologies, Llc | Oil dilution diagnostic test |
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JPH06213051A (ja) * | 1993-01-19 | 1994-08-02 | Nippondenso Co Ltd | 蓄圧式燃料噴射装置 |
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US5020362A (en) * | 1990-06-15 | 1991-06-04 | Hickok Electrical Instrument Company | Fuel injection system tester |
JP3033214B2 (ja) * | 1991-02-27 | 2000-04-17 | 株式会社デンソー | 複数の燃料圧送手段による蓄圧式燃料供給方法及び装置と、複数の流体圧送手段を有する機器における異常判断装置 |
JPH04350358A (ja) * | 1991-05-29 | 1992-12-04 | Mitsubishi Electric Corp | 電子制御燃料噴射式内燃機関の燃料リーク自己診断装置 |
JPH0699176B2 (ja) * | 1991-06-25 | 1994-12-07 | 東洋道路株式会社 | 半たわみ性舗装材 |
US5445019A (en) * | 1993-04-19 | 1995-08-29 | Ford Motor Company | Internal combustion engine with on-board diagnostic system for detecting impaired fuel injectors |
IT1261575B (it) * | 1993-09-03 | 1996-05-23 | Fiat Ricerche | Metodo di diagnosi di malfunzionamenti del circuito ad alta pressione di impianti di iniezione ad alta pressione per motori a combustione interna |
US5492099A (en) * | 1995-01-06 | 1996-02-20 | Caterpillar Inc. | Cylinder fault detection using rail pressure signal |
-
1995
- 1995-06-15 DE DE19521791A patent/DE19521791A1/de not_active Withdrawn
-
1996
- 1996-05-02 EP EP96106869A patent/EP0748930B1/de not_active Expired - Lifetime
- 1996-05-02 DE DE59605704T patent/DE59605704D1/de not_active Expired - Fee Related
- 1996-06-05 US US08/659,680 patent/US5708202A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06213051A (ja) * | 1993-01-19 | 1994-08-02 | Nippondenso Co Ltd | 蓄圧式燃料噴射装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101644220B (zh) * | 2007-06-12 | 2012-09-19 | 通用汽车环球科技运作公司 | 车载燃料喷射器测试 |
Also Published As
Publication number | Publication date |
---|---|
EP0748930A3 (de) | 1998-01-14 |
DE59605704D1 (de) | 2000-09-14 |
DE19521791A1 (de) | 1996-12-19 |
EP0748930A2 (de) | 1996-12-18 |
US5708202A (en) | 1998-01-13 |
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