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EP2011984A3 - Method for verifying the output signal of a rail pressure sensor - Google Patents

Method for verifying the output signal of a rail pressure sensor Download PDF

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Publication number
EP2011984A3
EP2011984A3 EP08104232.7A EP08104232A EP2011984A3 EP 2011984 A3 EP2011984 A3 EP 2011984A3 EP 08104232 A EP08104232 A EP 08104232A EP 2011984 A3 EP2011984 A3 EP 2011984A3
Authority
EP
European Patent Office
Prior art keywords
rail pressure
output signal
pressure sensor
pressure value
calculated
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Withdrawn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
EP08104232.7A
Other languages
German (de)
French (fr)
Other versions
EP2011984A2 (en
Inventor
Michael Kraemer
Stefan Denys
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 EP2011984A2 publication Critical patent/EP2011984A2/en
Publication of EP2011984A3 publication Critical patent/EP2011984A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F02D41/30—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
    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/28—Interface circuits
    • F02D2041/286—Interface circuits comprising means for signal processing
    • F02D2041/288—Interface circuits comprising means for signal processing for performing a transformation into the frequency domain, e.g. Fourier transformation

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)

Abstract

Ein Verfahren zur Plausibilisierung des Ausgangssignals eines Raildrucksensors einer direkteinspritzenden, ein Common-Rail-System aufweisenden Brennkraftmaschine, ist gekennzeichnet durch folgende Schritte:
- es wird das Ausgabesignal des Raildrucksensors über einen vorgebbaren Zeitraum erfasst und aufgezeichnet;
- das Ausgabesignal wird in den Frequenzraum transformiert;
- es werden charakteristische Merkmale aus dem transformierten Signal extrahiert;
- aufgrund der Merkmale und weiteren, vorgegebenen Einflussgrößen wird ein Raildruckwert berechnet;
- simultan hierzu wird aus dem Ausgabesignal des Raildrucksensors ein mittlerer Raildruckwert ermittelt;
- der mittlere Raildruckwert wird mit dem berechneten Raildruckwert verglichen;
- bei einer Abweichung des berechneten von dem mittleren Raildruckwert um einen vorgegebenen Grenzwert wird ein Fehlersignal ausgegeben und/oder in einem Fehlerspeicher gespeichert.

Figure imgaf001
A method for checking the plausibility of the output signal of a rail pressure sensor of a direct-injection internal-combustion engine having a common-rail system is characterized by the following steps:
- It is the output signal of the rail pressure sensor over a predetermined period of time recorded and recorded;
the output signal is transformed into the frequency domain;
- characteristic features are extracted from the transformed signal;
- Based on the characteristics and other predetermined influencing variables, a rail pressure value is calculated;
- Simultaneously, a mean rail pressure value is determined from the output signal of the rail pressure sensor;
the average rail pressure value is compared with the calculated rail pressure value;
- In a deviation of the calculated from the average rail pressure value by a predetermined limit value, an error signal is output and / or stored in a fault memory.
Figure imgaf001
EP08104232.7A 2007-07-02 2008-06-03 Method for verifying the output signal of a rail pressure sensor Withdrawn EP2011984A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007030713A DE102007030713A1 (en) 2007-07-02 2007-07-02 Method for plausibilizing the output signal of a rail pressure sensor

Publications (2)

Publication Number Publication Date
EP2011984A2 EP2011984A2 (en) 2009-01-07
EP2011984A3 true EP2011984A3 (en) 2013-12-25

Family

ID=39791021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08104232.7A Withdrawn EP2011984A3 (en) 2007-07-02 2008-06-03 Method for verifying the output signal of a rail pressure sensor

Country Status (3)

Country Link
US (1) US7810386B2 (en)
EP (1) EP2011984A3 (en)
DE (1) DE102007030713A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008021581B3 (en) 2008-04-30 2009-11-26 Continental Automotive Gmbh Method for determining the rail pressure in a common rail system and common rail injection system
DE102008043413A1 (en) 2008-11-03 2010-05-06 Robert Bosch Gmbh Rail pressure sensor output signal validation method for direct-injection internal-combustion engine of vehicle, involves comparing digital signal with analog signal for validation of analog signal
DE102009056381B4 (en) 2009-11-30 2014-05-22 Mtu Friedrichshafen Gmbh Method for controlling and regulating an internal combustion engine
DE102011100109A1 (en) * 2011-04-30 2012-10-31 Volkswagen Aktiengesellschaft Determination and reduction of an injection quantity difference in a multi-cylinder internal combustion engine
DE102011103988A1 (en) * 2011-06-10 2012-12-13 Mtu Friedrichshafen Gmbh Method for rail pressure control
DE102011082459B4 (en) * 2011-09-09 2013-11-07 Continental Automotive Gmbh Method for analyzing the efficiency of the high pressure pump of a fuel injection system
US9200975B2 (en) * 2011-11-15 2015-12-01 GM Global Technology Operations LLC Pressure diagnostic system and method
DE102012203097B3 (en) * 2012-02-29 2013-04-11 Continental Automotive Gmbh Method for determining error of pressure measured by pressure sensor in pressure accumulator for storing fluid in automobile, involves determining two three-tuples of pressures and of time period
DE102012217741A1 (en) 2012-09-28 2014-04-03 Robert Bosch Gmbh Method for determining plausibility of output signal of pressure sensor of direct-injection system of motor car internal combustion engine, involves detecting sensor failure upon comparison of calculation value with pressure value
DE102012218176A1 (en) * 2012-10-05 2014-04-10 Robert Bosch Gmbh Method for operating a fuel injection system
KR101601460B1 (en) * 2014-08-04 2016-03-09 현대자동차주식회사 System and method for compensating offset of pressure sensor
CN105569862B (en) * 2015-12-23 2018-03-13 潍柴动力股份有限公司 A kind of engine control and device
KR101807024B1 (en) * 2016-03-25 2018-01-10 현대자동차 주식회사 Device and method for controlling of valve
DE102016219356A1 (en) 2016-10-06 2018-04-12 Robert Bosch Gmbh Method for detecting tuning measures on an internal combustion engine
DE102017215055A1 (en) 2017-08-29 2019-02-28 Robert Bosch Gmbh Method for monitoring a pressure sensor with a pressure pulse generator
DE102018127686A1 (en) 2018-11-06 2020-05-07 Mtu Friedrichshafen Gmbh Method for monitoring a high-pressure pump of an internal combustion engine, engine control unit and internal combustion engine having a common rail system
DE102021214108A1 (en) * 2021-12-10 2023-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung Wiper blade, in particular for a motor vehicle
DE102021214106A1 (en) * 2021-12-10 2023-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung Wiper blade, in particular for a motor vehicle
CN115387903B (en) * 2022-05-20 2024-04-19 潍柴动力股份有限公司 Fault detection method and device, power device and medium for diesel engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5956663A (en) * 1996-11-07 1999-09-21 Rosemount, Inc. Signal processing technique which separates signal components in a sensor for sensor diagnostics
DE19950222A1 (en) * 1999-10-19 2001-04-26 Bosch Gmbh Robert Procedure for diagnosis of fuel supply system of IC engine has recording of variation of fuel pressure in system, formation of frequency spectrum of fuel pressure variation and analysis thereof
US20050107942A1 (en) * 2003-10-30 2005-05-19 Masumi Nomura Gas turbine control apparatus, gas turbine system and gas turbine control method
US20060144131A1 (en) * 2004-12-01 2006-07-06 Oliver Schulz Method and device for exciting pressure fluctuations in a fuel supply system of an internal combustion engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10305372B4 (en) * 2003-02-10 2009-01-08 Continental Automotive Gmbh Apparatus and method for detecting faults in a fuel injection system having a fuel pressure damper
DE102004056893A1 (en) * 2004-11-25 2006-06-01 Robert Bosch Gmbh Device and method for determining pressure fluctuations in a fuel supply system
GB0613948D0 (en) * 2006-07-13 2006-08-23 Delphi Tech Inc Fuel temperature estimation and control of fuel injection
JP2009191778A (en) * 2008-02-15 2009-08-27 Hitachi Ltd Control diagnosis device for high pressure fuel system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5956663A (en) * 1996-11-07 1999-09-21 Rosemount, Inc. Signal processing technique which separates signal components in a sensor for sensor diagnostics
DE19950222A1 (en) * 1999-10-19 2001-04-26 Bosch Gmbh Robert Procedure for diagnosis of fuel supply system of IC engine has recording of variation of fuel pressure in system, formation of frequency spectrum of fuel pressure variation and analysis thereof
US20050107942A1 (en) * 2003-10-30 2005-05-19 Masumi Nomura Gas turbine control apparatus, gas turbine system and gas turbine control method
US20060144131A1 (en) * 2004-12-01 2006-07-06 Oliver Schulz Method and device for exciting pressure fluctuations in a fuel supply system of an internal combustion engine

Also Published As

Publication number Publication date
US7810386B2 (en) 2010-10-12
US20090007647A1 (en) 2009-01-08
DE102007030713A1 (en) 2009-01-08
EP2011984A2 (en) 2009-01-07

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