WO2008058969A1 - Verfahren zur funktionsüberprüfung einer druckerfassungseinheit eines einspritzsystems einer brennkraftmaschine - Google Patents
Verfahren zur funktionsüberprüfung einer druckerfassungseinheit eines einspritzsystems einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2008058969A1 WO2008058969A1 PCT/EP2007/062284 EP2007062284W WO2008058969A1 WO 2008058969 A1 WO2008058969 A1 WO 2008058969A1 EP 2007062284 W EP2007062284 W EP 2007062284W WO 2008058969 A1 WO2008058969 A1 WO 2008058969A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- internal combustion
- combustion engine
- stored
- injection system
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 21
- 238000002347 injection Methods 0.000 title claims abstract description 17
- 239000007924 injection Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 22
- 230000007257 malfunction Effects 0.000 description 4
- 230000002123 temporal effect Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- 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
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
-
- 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
- F02D41/3836—Controlling the fuel pressure
-
- 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
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
- F02D2041/223—Diagnosis of fuel pressure sensors
Definitions
- the invention relates to a method for functional testing of a pressure detection unit of an injection system of an internal combustion engine according to the features of the preamble of main claim 1.
- Fuel injectors for operating an internal combustion engine have generally been known for many years.
- a so-called common rail injection system the fuel supply into the respective combustion chamber of the internal combustion engine is effected by injectors.
- a high injection pressure is advantageous because on the one hand a high specific power of the internal combustion engine and on the other hand, a low emission of pollutants can be achieved.
- a high-pressure pump and a pressure accumulator (rail) for the fuel injection pressures of 1600 to 1800 bar can be achieved. Due to the high injection pressures, there are also high demands on the safety technology and its components.
- Methods are known from the prior art, in which the injection system has a high-pressure control valve.
- the operability of a pressure detection unit with the internal combustion engine switched off takes place by means of a rail pressure examination.
- the pressure is switched off after switching off the internal combustion engine Discharged by opening the high pressure valve.
- the pressure reduction takes place very quickly, so that it can be determined after a very short predetermined time, whether the pressure detection unit works properly. For this purpose, it is considered whether the pressure value determined after the pressure reduction is above a predetermined limit value after a predetermined time.
- the object underlying the present invention is now to provide a method which, when using an injection system without a high-pressure control valve, makes it possible to determine the functional state of a pressure detection unit.
- the advantages achieved by the invention are, in particular, that a method for injection systems without high-pressure control valve is available for determining the operability of a pressure detection unit.
- the method determines the operability of the pressure detection unit with slow decay of railroad pressure.
- Figure 1 a flowchart for determining the functional state of the pressure detection unit
- FIG. 2 shows the temporal rail pressure profile in the event that no malfunction of the pressure detection unit is identified
- FIG. 3 shows the temporal rail pressure profile in the event that a malfunction of the pressure detection unit is identified.
- FIG. 1 shows a flow chart for determining the functional state of the pressure detection unit.
- the internal combustion engine is turned off in step Sl.
- step S10 pressure values are continuously determined and, based on these, the respective pressure gradients are determined on the basis of two successive pressure values. The time interval between the determination of these two pressure values, which are needed to determine the pressure gradients, can be specified.
- step S20 it is determined whether the determined pressure gradient falls below a stored pressure gradient limit. In the event that the particular pressure gradient exceeds this pressure gradient threshold, it is assumed that the pressure will normally decrease via leakage. The function check of the pressure detection unit is then not pursued.
- step S30 If, however, the pressure gradient falls below the stored pressure gradient limit value, it is checked in step S30 whether the pressure value determined at the second time is greater than a stored pressure limit value. If the pressure value determined at the second time is greater than the stored pressure limit value, then appropriate measures are initiated in step S40. It has proved to be particularly advantageous that the pressure value determined at the second time corresponds to the last determined pressure value.
- the functional check of the pressure detection unit can also take place before the next engine start. This is particularly necessary in the event that the post-run functional check may not become active because the condition that the pressure gradient value is less than a stored pressure gradient limit value is not identified before the controller shuts down. Since the function check is part of the control unit, it can only function when the control unit is energized. A caster is understood to mean that the engine control unit also performs functions for a certain period of time after the engine has been switched off.
- the rail pressure is completely reduced. Then the pressure gradient value is automatically smaller than a stored pressure gradient limit, so that the fault diagnosis is carried out immediately when the internal combustion engine is switched on, and thus the pressure determined last can be compared with the stored second limit value.
- FIG. 2 shows the temporal rail pressure course 1 in the event that no malfunction is identified in the pressure detection unit.
- the dashed line corresponds to the time profile of the stored pressure limit P2 for determining the operability of the pressure detection unit.
- the internal combustion engine is turned off at time tl. From this point in time, the rail pressure progression Pl decreases. Up to the point in time t2, the pressure gradient curve is above a stored pressure gradient limit value, both curves not being shown in the diagram. Only from the time t2 does the pressure gradient curve fall short of the stored pressure gradient limit value and a value comparison between the rail pressure P1 determined at the second time and the stored pressure limit value P2 is carried out. The result shows that the rail pressure Pl is below the stored pressure limit value P2 at the time t2 and the pressure detecting unit is not defective.
- FIG. 3 shows the temporal rail pressure curve PlO in the event that a malfunction occurs in the pressure detection unit is identified.
- the dashed line corresponds to the time profile of the stored pressure limit value P20 for determining the operability of the pressure detection unit.
- the internal combustion engine is switched off at the time t 1 '. From this point in time, the rail pressure gradient PlO has dropped. Until the time t2 ', the pressure gradient curve is above a stored pressure gradient limit, both curves not being shown in the diagram. Only from the time t2 'the pressure gradient falls below the stored Druckgradientengrenzwert and a value comparison between the last determined rail pressure PlO and the stored pressure limit P20 is performed. Since the rail pressure PlO is above the stored pressure threshold P20, an error of the pressure detection unit is identified.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
- Testing Of Engines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/514,849 US8113039B2 (en) | 2006-11-15 | 2007-11-13 | Method for testing the operation of a pressure sensing unit of an injection system of an internal combustion engine |
CN2007800425067A CN101583786B (zh) | 2006-11-15 | 2007-11-13 | 用于内燃机的喷射系统的压力检测单元的功能检查的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006053950A DE102006053950B4 (de) | 2006-11-15 | 2006-11-15 | Verfahren zur Funktionsüberprüfung einer Druckerfassungseinheit eines Einspritzsystems einer Brennkraftmaschine |
DE102006053950.8 | 2006-11-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008058969A1 true WO2008058969A1 (de) | 2008-05-22 |
Family
ID=39048869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/062284 WO2008058969A1 (de) | 2006-11-15 | 2007-11-13 | Verfahren zur funktionsüberprüfung einer druckerfassungseinheit eines einspritzsystems einer brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US8113039B2 (de) |
CN (1) | CN101583786B (de) |
DE (1) | DE102006053950B4 (de) |
WO (1) | WO2008058969A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008001444A1 (de) * | 2008-04-29 | 2009-11-05 | Robert Bosch Gmbh | Verfahren zum Bestimmen eines Überdrucks in einem Kraftstoffspeicher eines Einspritzsystems einer Brennkraftmaschine |
DE102008060260B4 (de) * | 2008-08-19 | 2015-10-08 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Diagnosemodul und -verfahren für die Hochdruckseite von Kraftstoffsystemen bei Maschinen mit gemeinsamem Kraftstoffverteilerrohr |
CN103016181A (zh) * | 2012-11-19 | 2013-04-03 | 奇瑞汽车股份有限公司 | 一种油轨压力信号的采集和监测方法 |
DE102018206838B4 (de) | 2018-05-03 | 2024-06-13 | Vitesco Technologies GmbH | Verfahren und Vorrichtung zur Diagnose eines Hochdrucksensors eines Kraftfahrzeugs |
DE102019220482A1 (de) * | 2019-01-10 | 2020-07-16 | Bosch Limited | Verfahren zum Identifizieren eines fehlerhaften Einspritzventils unter mehreren Einspritzventilen |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999034187A1 (de) * | 1997-12-23 | 1999-07-08 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur funktionsüberwachung eines drucksensors |
DE19937962A1 (de) * | 1999-08-11 | 2001-02-15 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung eines Einspritzsystems |
WO2001081746A1 (de) * | 2000-04-27 | 2001-11-01 | Robert Bosch Gmbh | Verfahren zum betreiben eines kraftstoffversorgungssystems für eine brennkraftmaschine insbesondere eines kraftfahrzeugs |
EP1526269A2 (de) * | 2003-10-20 | 2005-04-27 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zum Überwachen eines Kraftstoffdrucksensors |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19548280A1 (de) * | 1995-12-22 | 1997-06-26 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
JP3234865B2 (ja) * | 1997-08-22 | 2001-12-04 | 本田技研工業株式会社 | 燃料圧力センサの故障検知装置 |
DE10003906A1 (de) * | 2000-01-29 | 2001-08-09 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Kalibrieren eines Drucksensors |
DE10144800A1 (de) * | 2001-09-12 | 2003-04-03 | Bosch Gmbh Robert | Verfahren, Computerprogramm, Steuer- und/oder Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Kraftstoffsystem für eine Brennkraftmaschine |
DE10147189A1 (de) * | 2001-09-25 | 2003-04-24 | Bosch Gmbh Robert | Verfahren zum Betreiben eines Kraftstoffversorgungssystems für einen Verbrennungsmotor eines Kraftfahrzeugs |
US6947831B2 (en) * | 2003-04-11 | 2005-09-20 | Ford Global Technologies, Llc | Pressure sensor diagnosis via a computer |
DE10351893A1 (de) * | 2003-11-06 | 2005-06-09 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine |
JP2006291755A (ja) * | 2005-04-06 | 2006-10-26 | Denso Corp | 燃料噴射制御装置 |
JP4508020B2 (ja) * | 2005-07-13 | 2010-07-21 | トヨタ自動車株式会社 | 燃料供給装置における電磁リリーフ弁の診断装置 |
US7854160B2 (en) * | 2007-08-20 | 2010-12-21 | Gm Global Technology Operations, Inc. | Diagnostic systems and methods for the high pressure side of fuel systems in common fuel rail engines |
-
2006
- 2006-11-15 DE DE102006053950A patent/DE102006053950B4/de not_active Expired - Fee Related
-
2007
- 2007-11-13 WO PCT/EP2007/062284 patent/WO2008058969A1/de active Application Filing
- 2007-11-13 CN CN2007800425067A patent/CN101583786B/zh active Active
- 2007-11-13 US US12/514,849 patent/US8113039B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999034187A1 (de) * | 1997-12-23 | 1999-07-08 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur funktionsüberwachung eines drucksensors |
DE19937962A1 (de) * | 1999-08-11 | 2001-02-15 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung eines Einspritzsystems |
WO2001081746A1 (de) * | 2000-04-27 | 2001-11-01 | Robert Bosch Gmbh | Verfahren zum betreiben eines kraftstoffversorgungssystems für eine brennkraftmaschine insbesondere eines kraftfahrzeugs |
EP1526269A2 (de) * | 2003-10-20 | 2005-04-27 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zum Überwachen eines Kraftstoffdrucksensors |
Also Published As
Publication number | Publication date |
---|---|
DE102006053950A1 (de) | 2008-05-21 |
DE102006053950B4 (de) | 2008-11-06 |
US8113039B2 (en) | 2012-02-14 |
US20100083742A1 (en) | 2010-04-08 |
CN101583786B (zh) | 2012-11-14 |
CN101583786A (zh) | 2009-11-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102010013602B4 (de) | Verfahren zur Erkennung eines Fehlverhaltens eines elektronisch geregelten Kraftstoffeinspritzsystems eines Verbrennungsmotors | |
EP1711704B1 (de) | Verfahren zum überwachen der funktionsfähigkeit eines kraftstoffeinspritzsystems | |
EP1573188B1 (de) | Vorrichtung und verfahren zum erkennen von fehlern in einem kraftstoffeinspritzsystem | |
EP1157201A1 (de) | System zum betreiben einer brennkraftmaschine, insbesondere eines kraftfahrzeugs | |
DE19604552B4 (de) | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine | |
DE102014109188B4 (de) | Verfahren und System zum Diagnostizieren eines Fehlers eines Benzindirekteinspritzungsmotors | |
EP1682763B1 (de) | Verfahren zum betreiben einer brennkraftmaschine | |
WO2012156185A2 (de) | Verfahren zum bewerten der funktionsfähigkeit eines kraftstoffeinspritzsystems einer brennkraftmaschine | |
WO2015022058A1 (de) | Verfahren zur injektorindividuellen diagnose einer kraftstoff-einspritzeinrichtung und brennkraftmaschine mit einer kraftstoff-einspritzeinrichtung | |
WO2008058969A1 (de) | Verfahren zur funktionsüberprüfung einer druckerfassungseinheit eines einspritzsystems einer brennkraftmaschine | |
DE102016205481A1 (de) | Verfahren zur Dichtheitsprüfung einer Kraftstoff-Hochdruck-Einspritzvorrichtung | |
EP0764777A2 (de) | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine | |
DE102010029064A1 (de) | Verfahren zur Überwachung eines Einspritzventils einer Einspritzeinrichtung | |
DE102011087957A1 (de) | Verfahren zum Lokalisieren eines Fehlverhaltens eines Fördersystem einer Brennkraftmaschine und Fördersystem einer Brennkraftmaschine | |
DE102014211880A1 (de) | Kraftstoffzuführungssystem und Verfahren zum Lokalisieren eines Lecks in einem Kraftstoffzuführungssystem | |
DE102011005527A1 (de) | Verfahren zur Prüfung der Kraftstoffmengenbilanz in einem Common Rail System, entsprechende Motorsteuerung sowie entsprechendes Diagnosegerät | |
EP0886056A1 (de) | Verfahren und Vorrichtung zur überwachung eines Kraftstoffzumesssystems | |
DE102005028137A1 (de) | Verfahren zum Messen der Steuermenge eines Einspritzventils und ein Computerprogramm zur Durchführung eines solchen Verfahrens | |
DE102004005851A1 (de) | Vorrichtung und Verfahren zum Überwachen einer Kraftstofffördervorrichtung | |
EP1325222B1 (de) | Verfahren zur diagnose eines ventils in einem kraftstoffversorgungssystem einer brennkraftmaschine | |
DE102019210340B3 (de) | Verfahren und Vorrichtung zur Vermeidung von Überdruck in einem Kraftstoff-Hochdruckeinspritzsystem eines Kraftfahrzeugs | |
DE102008024545A1 (de) | Verfahren und Vorrichtung zur Diagnose eines Fehlers, insbesondere in einem Niederdruckbereich eines Kraftstoff-Einspritzsystems eines Verbrennungsmotors | |
DE19957732B4 (de) | Verfahren zur Überprüfung einer betriebssicherheitsrelevanten Komponente einer Anlage | |
EP1327762B1 (de) | Verfahren, Computerprogramm, Steuer- und/oder Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Brennkraftmaschine | |
DE102015206303A1 (de) | Verfahren zum Detektieren einer Leckage |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780042506.7 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07822553 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12514849 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07822553 Country of ref document: EP Kind code of ref document: A1 |