EP2184473A3 - Method and device for testing a pressure sensor of a fuel injection device - Google Patents

Method and device for testing a pressure sensor of a fuel injection device Download PDF

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Publication number
EP2184473A3
EP2184473A3 EP09170017.9A EP09170017A EP2184473A3 EP 2184473 A3 EP2184473 A3 EP 2184473A3 EP 09170017 A EP09170017 A EP 09170017A EP 2184473 A3 EP2184473 A3 EP 2184473A3
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure sensor
fuel injection
testing
injection device
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Withdrawn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
EP09170017.9A
Other languages
German (de)
French (fr)
Other versions
EP2184473A2 (en
Inventor
Rene Zieher
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2184473A2 publication Critical patent/EP2184473A2/en
Publication of EP2184473A3 publication Critical patent/EP2184473A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—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
    • 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

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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Verfahren zur Überprüfung eines Drucksensors (S) einer Kraftstoffeinspritzeinrichtung, insbesondere eines Kraftfahrzeugs, wobei die Kraftstoffeinspritzeinrichtung einen Druckspeicher (9) aufweist, dem der Drucksensor (S) und ein Einspritzventil (11) zugeordnet ist, wobei bei dem Verfahren eine Kraftstoffmenge (Q) unter einem Druck (pl) von dem Einspritzventil (11) eingespritzt wird, dadurch gekennzeichnet, dass eine Druckdifferenz (Δp1), die durch einen Druckeinbruch auf Grund des Einspritzvorgangs entsteht, in Abhängigkeit von dem Druck (pl) und der Kraftstoffmenge (Q) ermittelt wird.

Figure imgaf001
A method for checking a pressure sensor (S) of a fuel injection device, in particular of a motor vehicle, wherein the fuel injection device has a pressure accumulator (9) to which the pressure sensor (S) and an injection valve (11) is assigned, wherein in the method a fuel quantity (Q) below a pressure (pl) from the injection valve (11) is injected, characterized in that a pressure difference (Δp1), which results from a pressure drop due to the injection process, in dependence on the pressure (pl) and the amount of fuel (Q) is determined ,
Figure imgaf001
EP09170017.9A 2008-11-10 2009-09-11 Method and device for testing a pressure sensor of a fuel injection device Withdrawn EP2184473A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008043592A DE102008043592A1 (en) 2008-11-10 2008-11-10 Method and device for checking a pressure sensor of a fuel injection device

Publications (2)

Publication Number Publication Date
EP2184473A2 EP2184473A2 (en) 2010-05-12
EP2184473A3 true EP2184473A3 (en) 2014-01-29

Family

ID=41560384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09170017.9A Withdrawn EP2184473A3 (en) 2008-11-10 2009-09-11 Method and device for testing a pressure sensor of a fuel injection device

Country Status (3)

Country Link
US (1) US20100121600A1 (en)
EP (1) EP2184473A3 (en)
DE (1) DE102008043592A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107636283A (en) * 2015-04-01 2018-01-26 罗伯特·博世有限公司 Method and apparatus for obtaining the corrected value for fuel injection amount

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007028900B4 (en) * 2007-06-22 2013-06-27 Continental Automotive Gmbh Method and device for diagnosing an injection valve of an internal combustion engine that is in communication with a fuel rail
JP5182337B2 (en) * 2010-08-18 2013-04-17 株式会社デンソー Detection deviation judgment device of fuel pressure sensor
US9200975B2 (en) * 2011-11-15 2015-12-01 GM Global Technology Operations LLC Pressure diagnostic system and method
DE102012218176A1 (en) 2012-10-05 2014-04-10 Robert Bosch Gmbh Method for operating a fuel injection system
DE102017208080A1 (en) * 2017-05-12 2018-04-12 Continental Automotive Gmbh Method for operating a high-pressure fuel system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH112148A (en) * 1997-06-11 1999-01-06 Toyota Motor Corp Operation controller for internal combustion engine
DE19757655A1 (en) * 1997-12-23 1999-08-26 Siemens Ag Method and device for monitoring the function of a pressure sensor
EP1526269A2 (en) * 2003-10-20 2005-04-27 Siemens Aktiengesellschaft Method and device for monitoring a fuel pressure sensor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004028891A1 (en) 2004-06-15 2006-01-05 Robert Bosch Gmbh Method for running of internal combustion engine of especially motor vehicle entails determining difference signal which represents deviation of pressure measured by pressure sensor from specific pressure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH112148A (en) * 1997-06-11 1999-01-06 Toyota Motor Corp Operation controller for internal combustion engine
DE19757655A1 (en) * 1997-12-23 1999-08-26 Siemens Ag Method and device for monitoring the function of a pressure sensor
EP1526269A2 (en) * 2003-10-20 2005-04-27 Siemens Aktiengesellschaft Method and device for monitoring a fuel pressure sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107636283A (en) * 2015-04-01 2018-01-26 罗伯特·博世有限公司 Method and apparatus for obtaining the corrected value for fuel injection amount
CN107636283B (en) * 2015-04-01 2021-04-02 罗伯特·博世有限公司 Method and device for determining a correction value for a fuel injection quantity

Also Published As

Publication number Publication date
EP2184473A2 (en) 2010-05-12
US20100121600A1 (en) 2010-05-13
DE102008043592A1 (en) 2010-05-12

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