IT1261575B - METHOD OF DIAGNOSIS OF MALFUNCTIONS OF THE HIGH PRESSURE CIRCUIT OF HIGH PRESSURE INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES - Google Patents

METHOD OF DIAGNOSIS OF MALFUNCTIONS OF THE HIGH PRESSURE CIRCUIT OF HIGH PRESSURE INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES

Info

Publication number
IT1261575B
IT1261575B ITTO930646A ITTO930646A IT1261575B IT 1261575 B IT1261575 B IT 1261575B IT TO930646 A ITTO930646 A IT TO930646A IT TO930646 A ITTO930646 A IT TO930646A IT 1261575 B IT1261575 B IT 1261575B
Authority
IT
Italy
Prior art keywords
high pressure
pressure
duty cycle
malfunctions
diagnosis
Prior art date
Application number
ITTO930646A
Other languages
Italian (it)
Inventor
Paolo Tubetti
Riccardo Buratti
Stefano Maria Borrione
Original Assignee
Fiat Ricerche
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 Fiat Ricerche filed Critical Fiat Ricerche
Priority to ITTO930646A priority Critical patent/IT1261575B/en
Publication of ITTO930646A0 publication Critical patent/ITTO930646A0/en
Priority to PCT/EP1994/002922 priority patent/WO1995006814A1/en
Priority to DE69409222T priority patent/DE69409222T2/en
Priority to EP94927543A priority patent/EP0668966B1/en
Priority to JP50796095A priority patent/JP3727339B2/en
Publication of ITTO930646A1 publication Critical patent/ITTO930646A1/en
Application granted granted Critical
Publication of IT1261575B publication Critical patent/IT1261575B/en

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
    • F02D41/30—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
    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
    • F02D2041/2027—Control of the current by pulse width modulation or duty cycle control
    • 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
    • F02D41/22—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
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D2041/228—Warning displays
    • 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
    • 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

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)

Abstract

Il metodo di diagnosi ha lo scopo di rilevare eventuali malfunzionamenti del circuito ad alta pressione. Il circuito comprende una pompa (6) che alimenta combustibile ad una pressione il cui valore viene controllato tramite una elettrovalvola di regolazione pressione (7) alimentata da una corrente il cui duty-cycle viene controllato in cicli di regolazione periodici. Il metodo consiste nel monitorare grandezze correlate alla pressione generata dalla pompa (6) in cicli di regolazione successivi, confrontare l'andamento di tali grandezze con valori di riferimento e generare segnali di guasto nel caso che l'andamento determinato non presenti una relazione prefissata con i valori di riferimento. In particolare, viene verificato il permanere della pressione di alimentazione del carburante al di sopra o al di sotto di valori massimo e minimo, il permanere del duty-cycle della corrente di alimentazione dell'elettrovalvola (7) al di sopra o al di sotto di limiti prefissati e la congruenza fra un valore di pressione misurato ed un valore di riferimento calcolato in base al duty-cycle.Figure 1 e 3.The diagnostic method is intended to detect any malfunction of the high pressure circuit. The circuit comprises a pump (6) which supplies fuel at a pressure whose value is controlled by a pressure regulation solenoid valve (7) fed by a current whose duty cycle is controlled in periodic regulation cycles. The method consists of monitoring quantities related to the pressure generated by the pump (6) in subsequent regulation cycles, comparing the trend of these quantities with reference values and generating fault signals if the determined trend does not have a predetermined relationship with the reference values. In particular, the permanence of the fuel supply pressure above or below the maximum and minimum values is checked, the persistence of the duty cycle of the supply current of the solenoid valve (7) above or below preset limits and the congruence between a measured pressure value and a reference value calculated on the basis of the duty cycle. Figures 1 and 3.

ITTO930646A 1993-09-03 1993-09-03 METHOD OF DIAGNOSIS OF MALFUNCTIONS OF THE HIGH PRESSURE CIRCUIT OF HIGH PRESSURE INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES IT1261575B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ITTO930646A IT1261575B (en) 1993-09-03 1993-09-03 METHOD OF DIAGNOSIS OF MALFUNCTIONS OF THE HIGH PRESSURE CIRCUIT OF HIGH PRESSURE INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES
PCT/EP1994/002922 WO1995006814A1 (en) 1993-09-03 1994-09-02 Method of diagnosing malfunctioning of the high-pressure circuit of internal combustion engine high-pressure injection systems
DE69409222T DE69409222T2 (en) 1993-09-03 1994-09-02 METHOD FOR DETERMINING FAULTS IN THE HIGH PRESSURE CIRCUIT OF A HIGH PRESSURE FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE
EP94927543A EP0668966B1 (en) 1993-09-03 1994-09-02 Method of diagnosing malfunctioning of the high-pressure circuit of internal combustion engine high-pressure injection systems
JP50796095A JP3727339B2 (en) 1993-09-03 1994-09-02 Fault diagnosis method in high pressure circuit of internal combustion engine high pressure injection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO930646A IT1261575B (en) 1993-09-03 1993-09-03 METHOD OF DIAGNOSIS OF MALFUNCTIONS OF THE HIGH PRESSURE CIRCUIT OF HIGH PRESSURE INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES

Publications (3)

Publication Number Publication Date
ITTO930646A0 ITTO930646A0 (en) 1993-09-03
ITTO930646A1 ITTO930646A1 (en) 1995-03-03
IT1261575B true IT1261575B (en) 1996-05-23

Family

ID=11411710

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO930646A IT1261575B (en) 1993-09-03 1993-09-03 METHOD OF DIAGNOSIS OF MALFUNCTIONS OF THE HIGH PRESSURE CIRCUIT OF HIGH PRESSURE INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES

Country Status (5)

Country Link
EP (1) EP0668966B1 (en)
JP (1) JP3727339B2 (en)
DE (1) DE69409222T2 (en)
IT (1) IT1261575B (en)
WO (1) WO1995006814A1 (en)

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US5493902A (en) * 1994-03-02 1996-02-27 Ford Motor Company On-board detection of pressure regulator malfunction
US5499538A (en) * 1994-03-03 1996-03-19 Ford Motor Company On-board detection of fuel pump malfunction
DE19521791A1 (en) * 1995-06-15 1996-12-19 Daimler Benz Ag Method for detecting malfunctions in a fuel injection system of an internal combustion engine
DE19534051A1 (en) * 1995-09-14 1997-03-20 Bosch Gmbh Robert Method of operating a fuel injector
DE19547647A1 (en) * 1995-12-20 1997-06-26 Bosch Gmbh Robert Method and device for monitoring a fuel metering system of an internal combustion engine
DE19548280A1 (en) * 1995-12-22 1997-06-26 Bosch Gmbh Robert Method and device for controlling an internal combustion engine
DE19604552B4 (en) * 1996-02-08 2007-10-31 Robert Bosch Gmbh Method and device for controlling an internal combustion engine
DE19613184C2 (en) * 1996-04-02 1998-01-22 Daimler Benz Ag Method for detecting malfunctions in a fuel injection system
ES2169369T3 (en) * 1996-06-26 2002-07-01 Bosch Gmbh Robert PROCEDURE FOR OPERATION OF A FUEL INJECTION DEVICE.
DE19634982C2 (en) * 1996-08-29 2002-10-10 Siemens Ag Method for monitoring a fuel pressure
DE19703891B4 (en) * 1997-02-03 2008-07-31 Robert Bosch Gmbh Method and device for detecting a leak
DE19726183A1 (en) * 1997-06-20 1998-12-24 Bosch Gmbh Robert Method and device for monitoring a fuel metering system
DE19834660A1 (en) * 1998-07-31 2000-02-03 Bosch Gmbh Robert Method and device for monitoring a fuel metering system
DE19937962A1 (en) * 1999-08-11 2001-02-15 Bosch Gmbh Robert IC engine common-rail fuel injection system control method monitors valve inserted between high pressure and low pressure regions for indicating fault
DE10031066C2 (en) * 2000-06-26 2002-05-02 Siemens Ag Injection system for an internal combustion engine and method for operating an injection system
IT1321068B1 (en) * 2000-11-14 2003-12-30 Fiat Ricerche METHOD OF DIAGNOSIS OF LOSSES IN A COMMON MANIFOLD INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE.
DE10146474B4 (en) * 2001-09-21 2005-10-06 Robert Bosch Gmbh Method and device for diagnosing a pressure damper
DE10147189A1 (en) 2001-09-25 2003-04-24 Bosch Gmbh Robert Method for operating a fuel supply system for an internal combustion engine of a motor vehicle
US6715468B2 (en) * 2001-11-07 2004-04-06 Denso Corporation Fuel injection system
DE10259797A1 (en) * 2002-12-19 2004-07-15 Siemens Ag Device and method for detecting faults in a fuel injection system
DE102004022115A1 (en) 2004-05-05 2005-11-24 Robert Bosch Gmbh Method for introducing a reagent into an exhaust duct of an internal combustion engine and device for carrying out the method
DE102004037963A1 (en) 2004-08-05 2006-03-16 Robert Bosch Gmbh test methods
JP2008516153A (en) * 2004-10-12 2008-05-15 フォード・オトマティブ・サナイ・アノニム・シルケチ Method and apparatus for monitoring fuel injection
JP4746510B2 (en) 2006-02-21 2011-08-10 愛三工業株式会社 Load drive system abnormality diagnosis system and fuel pump control system
JP4591390B2 (en) * 2006-03-27 2010-12-01 株式会社デンソー Pump fault diagnosis device
DE102008024955B3 (en) * 2008-05-23 2009-12-24 Continental Automotive Gmbh Method for detecting a malfunction of a rail pressure sensor in a common rail injection system
US20140352416A1 (en) * 2011-12-13 2014-12-04 Scania Cv Ab Device and method for fault detection in a fuel supply system of a motor vehicle
EP2791496B1 (en) * 2011-12-13 2017-09-20 Scania CV AB Device and method for fault detection in a fuel supply system of a motor vehicle
US8775052B2 (en) 2011-12-15 2014-07-08 GM Global Technology Operations LLC Sensors bias detection for electronic returnless fuel system
DE102016205481A1 (en) * 2016-04-04 2017-10-05 Bayerische Motoren Werke Aktiengesellschaft Method for leak testing a high-pressure fuel injection device
DE102018217327B4 (en) * 2018-10-10 2023-10-12 Vitesco Technologies GmbH Method and device for checking the plausibility of the functionality of a high-pressure sensor of a high-pressure fuel injection device of a motor vehicle

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DE3301742A1 (en) * 1983-01-20 1984-07-26 Robert Bosch Gmbh, 7000 Stuttgart SAFETY DEVICE FOR AN INTERNAL COMBUSTION ENGINE
DE4103840B4 (en) * 1991-02-08 2011-02-10 Robert Bosch Gmbh Error monitoring method
JP3033214B2 (en) * 1991-02-27 2000-04-17 株式会社デンソー Accumulation type fuel supply method and apparatus by a plurality of fuel pumping means, and abnormality determination apparatus in equipment having a plurality of fluid pumping means
JPH0569374U (en) * 1992-02-28 1993-09-21 富士重工業株式会社 In-cylinder direct injection engine abnormality warning device

Also Published As

Publication number Publication date
JP3727339B2 (en) 2005-12-14
WO1995006814A1 (en) 1995-03-09
DE69409222T2 (en) 1998-07-16
ITTO930646A1 (en) 1995-03-03
ITTO930646A0 (en) 1993-09-03
DE69409222D1 (en) 1998-04-30
EP0668966B1 (en) 1998-03-25
EP0668966A1 (en) 1995-08-30
JPH08503053A (en) 1996-04-02

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970929