EP0280188A2 - Dispositif de commande de moteur diesel - Google Patents

Dispositif de commande de moteur diesel Download PDF

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Publication number
EP0280188A2
EP0280188A2 EP88102346A EP88102346A EP0280188A2 EP 0280188 A2 EP0280188 A2 EP 0280188A2 EP 88102346 A EP88102346 A EP 88102346A EP 88102346 A EP88102346 A EP 88102346A EP 0280188 A2 EP0280188 A2 EP 0280188A2
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
lambda
line
fuel
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.)
Granted
Application number
EP88102346A
Other languages
German (de)
English (en)
Other versions
EP0280188A3 (en
EP0280188B1 (fr
Inventor
Richard Dipl.-Ing. Bauder
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.)
Audi AG
Original Assignee
Audi AG
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 Audi AG filed Critical Audi AG
Publication of EP0280188A2 publication Critical patent/EP0280188A2/fr
Publication of EP0280188A3 publication Critical patent/EP0280188A3/de
Application granted granted Critical
Publication of EP0280188B1 publication Critical patent/EP0280188B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02D41/22—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
    • F02D41/02—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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
    • F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02D2041/226—Fail safe control for fuel injection pump
    • 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
    • F02D2250/32—Air-fuel ratio control in a diesel engine

Definitions

  • the invention relates to a control device for a diesel internal combustion engine with an air intake line, at least one fuel injection pump and an exhaust line, and with a device for stopping the internal combustion engine, for example a solenoid valve in the fuel line or a closing flap in the air intake line or the exhaust line.
  • the invention has for its object to provide a control device according to the preamble of claim 1, with which the injection of excess fuel is determined in a simple manner and in this case the internal combustion engine is stopped.
  • the invention is based on the knowledge that when an excess amount of fuel is injected, as can occur with a faulty injection system, the air ratio lambda in the exhaust gas is reduced almost suddenly.
  • a known lambda lean probe see, for example, DE-PS 33 05 706
  • this device is an electromagnetic shut-off valve in the fuel line, which is normally provided in every diesel fuel injection system and is used to suddenly cut off the fuel supply and switch off the engine when the ignition switch is switched off.
  • this case only a switch in series with the ignition starter switch needs to be provided in the circuit of the shut-off valve, which is excited by the comparison electronics and interrupts the circuit of the shut-off valve or connects it to ground.
  • a timer activated when the internal combustion engine is started can be provided, which prevents the internal combustion engine from being stopped for a certain period of time after the start, even if the actual lambda value falls below the permissible lambda target value, that is to say there is an excess fuel quantity.
  • 1 denotes a diesel internal combustion engine which has an air intake line 2, at least one fuel injection pump 3 and an exhaust line.
  • the injection pump 3 receives the fuel from a fuel pump 5 from a container 6 and conveys it through an injection line 7 in a time-controlled and quantity-controlled manner to the injection valves (not shown) of the diesel engine 1.
  • an electromagnetic shut-off valve 8 is arranged, which is controlled by Spring 17 is brought into the open position.
  • a starter switch 10 which is closed during operation of the internal combustion engine and in the closed state connects the winding of the shut-off valve 8 to a voltage source 11, whereby the shut-off valve 8 is brought into its closed position.
  • a lambda lean probe 12 is arranged in the exhaust gas line 4, which determines the oxygen content in the exhaust gas and feeds a corresponding signal through a line 13 to a comparison electronics 14, in which the probe signal is compared with a lambda target value. If the lambda setpoint falls below, for example, 1.5 (by a certain amount), the comparison electronics 14 outputs an output signal to the winding 15a of a relay 15 via a line 14a, which is connected in series with the starter switch 10 in the circuit 9 of the shutoff valve 8 lies, whereby its contact tongue 16 is brought from the normal position shown to the dashed position 16a, in which the circuit 9 is interrupted or connected to ground. Then the shut-off valve 8 is closed by the spring 17 and thus causes the internal combustion engine 1 to stop immediately.
  • the diesel internal combustion engine 1 is not stopped by shutting off the fuel supply, but rather by shutting off the air supply by means of a butterfly valve 21 arranged in the intake line 2 and actuated by an electromagnet 20, the electromagnet 20 of which by the comparative electronics 14 im Closing sense is excited when the described conditions are met.
  • an electromagnetically actuated shut-off valve 22 is arranged in the exhaust line 4 of the diesel internal combustion engine 1, which in turn is closed by the comparative electronics 14 when the corresponding requirements are met, so that the internal combustion engine 1 immediately is stopped.
  • the permissible lambda values are determined as a function of the rotational speed in the comparison electronics 14, in order to avoid stopping the internal combustion engine during starting and the injection of a fuel excess that takes place in the process.
  • an electromagnetic switch 25 is provided for this purpose in the control line 14a from the comparison electronics 14 to the relay winding 15a, the switching element 26 of which is normally held in the closed position by a spring 27, but is brought into the open position for the starting process is so that despite the presence of a fuel excess, the relay 15 is not energized and the shut-off valve 8 remains closed.
  • the switch 25 has a wick tion 28, in the power supply line 29 a timer 30 is arranged, which is activated when the starter switch 10 is closed and for a certain period after the start, for example 1 minute, maintains the power supply of the winding 28, so that the switching element 26 in its open position is brought. After this period, the line 29 is interrupted by the timer 30 and the switching element 26 is brought into the closed position by the spring 27. Now the comparison electronics 14 can be effective again and de-energize the winding 8a of the shut-off valve 8 via the relay 15 when the lambda value drops below the certain amount, so that the shut-off valve 8 is brought into its open position by the spring 17 and the fuel supply is increased Internal combustion engine 1 is interrupted.

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)
EP88102346A 1987-02-25 1988-02-18 Dispositif de commande de moteur diesel Expired - Lifetime EP0280188B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873705972 DE3705972A1 (de) 1987-02-25 1987-02-25 Steuereinrichtung fuer eine diesel-brennkraftmaschine
DE3705972 1987-02-25

Publications (3)

Publication Number Publication Date
EP0280188A2 true EP0280188A2 (fr) 1988-08-31
EP0280188A3 EP0280188A3 (en) 1988-12-21
EP0280188B1 EP0280188B1 (fr) 1991-11-06

Family

ID=6321698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102346A Expired - Lifetime EP0280188B1 (fr) 1987-02-25 1988-02-18 Dispositif de commande de moteur diesel

Country Status (4)

Country Link
US (1) US4903670A (fr)
EP (1) EP0280188B1 (fr)
JP (1) JP2617971B2 (fr)
DE (2) DE3705972A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992001861A1 (fr) * 1990-07-19 1992-02-06 Robert Bosch Gmbh Dispositif de commande de la temperature d'une resistance de mesure
US5699767A (en) * 1994-04-28 1997-12-23 Nissan Diesel Motor Co., Ltd. Gas engine
WO2000022288A1 (fr) * 1998-10-08 2000-04-20 Robert Bosch Gmbh Dispositif pour surveiller le processus de combustion dans des moteurs a combustion interne

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229540C2 (de) * 1992-09-04 2002-03-14 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19513370B4 (de) * 1995-04-08 2008-06-12 Robert Bosch Gmbh Verfahren und Vorrichtung zur Steuerung der Leistung einer Brennkraftmaschine
DE19620038B4 (de) * 1996-05-17 2007-08-23 Robert Bosch Gmbh Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems
US6044806A (en) * 1997-12-19 2000-04-04 Caterpillar Inc. Method and apparatus for detecting gaseous fuel leakage through a gaseous fuel admission valve within an engine
DE19931266C2 (de) 1999-07-07 2002-01-17 Bosch Gmbh Robert Verfahren und Motormanagementsystem zur Ausfallerkennung eines Förderaggregats in einem Fördermodul
DE102010041773B4 (de) * 2010-09-30 2013-10-31 Robert Bosch Gmbh Verfahren und Anordnung zum Betreiben eines Verbrennungsmotors
US8972152B2 (en) 2011-11-01 2015-03-03 Ford Global Technologies, Llc Method and system for inhibiting engine idle stop based on operating conditions
US9261030B2 (en) 2013-05-20 2016-02-16 Kohler Co. Automatic fuel shutoff
US9074535B1 (en) 2013-12-19 2015-07-07 Kohler Co. Integrated engine control apparatus and method of operating same
US10054081B2 (en) 2014-10-17 2018-08-21 Kohler Co. Automatic starting system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339429A1 (de) * 1983-10-29 1985-05-09 Volkswagenwerk Ag, 3180 Wolfsburg Einrichtung zur reduzierung von abgas-schadstoffen
US4522168A (en) * 1983-01-31 1985-06-11 Toyota Jidosha Kabushiki Kaisha Method and apparatus for controlling fuel-injection amount in diesel engine
EP0152870A2 (fr) * 1984-02-21 1985-08-28 Comprex Ag Procédé de régénération de filtre d'échappement pour moteurs à combustion
JPS6155334A (ja) * 1984-08-27 1986-03-19 Toyota Motor Corp 内燃機関の空燃比制御装置
EP0194854A2 (fr) * 1985-03-11 1986-09-17 Honda Giken Kogyo Kabushiki Kaisha Appareil de commande de l'alimentation en carburant d'un moteur à combustion interne

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2319576A1 (de) * 1973-04-18 1974-11-14 Bosch Gmbh Robert Schutzeinrichtung fuer eine anordnung zur abgasentgiftung von brennkraftmaschinen
US4077381A (en) * 1973-02-09 1978-03-07 Joseph Carl Firey Gasoline engine fuel interrupter
JPS5844853B2 (ja) * 1975-07-16 1983-10-05 カブシキガイシヤ ニツポンジドウシヤブヒンソウゴウケンキユウシヨ クウネンヒチヨウセイソウチ
DE3127038A1 (de) * 1981-07-09 1983-01-20 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur vermeidung von nichtgleichgewichtszustaenden in abgasen von brennkraftmaschinen
JPS58204945A (ja) * 1982-05-24 1983-11-29 Honda Motor Co Ltd 過給機を備える内燃エンジンの燃料供給制御方法
DE3301743A1 (de) * 1983-01-20 1984-07-26 Robert Bosch Gmbh, 7000 Stuttgart Sicherheitseinrichtung fuer eine brennkraftmaschine mit selbstzuendung
DE3301742A1 (de) * 1983-01-20 1984-07-26 Robert Bosch Gmbh, 7000 Stuttgart Sicherheitseinrichtung fuer eine brennkraftmaschine mit selbstzuendung
EP0124504A1 (fr) * 1983-03-25 1984-11-07 Friedmann & Maier Aktiengesellschaft Dispositif d'arrêt d'un moteur à combustion interne à injection de combustible
JPS60237134A (ja) * 1984-05-07 1985-11-26 Toyota Motor Corp 内燃機関の空燃比制御装置
DE3426791A1 (de) * 1984-07-20 1986-02-06 Voest-Alpine Friedmann GmbH, Linz Notabstelleinrichtung fuer brennkraftmaschinen
JPS6165042A (ja) * 1984-09-06 1986-04-03 Toyota Motor Corp 内燃機関の空燃比制御装置
JPS6170151A (ja) * 1984-09-12 1986-04-10 Nippon Denso Co Ltd 燃料噴射量制御装置
DE3441390A1 (de) * 1984-11-13 1986-05-15 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Verfahren zur regelung der schadstoffreduzierung bei gasmotoren
JPS61187570A (ja) * 1985-02-16 1986-08-21 Honda Motor Co Ltd 内燃エンジンの吸気２次空気供給装置
US4715344A (en) * 1985-08-05 1987-12-29 Japan Electronic Control Systems, Co., Ltd. Learning and control apparatus for electronically controlled internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522168A (en) * 1983-01-31 1985-06-11 Toyota Jidosha Kabushiki Kaisha Method and apparatus for controlling fuel-injection amount in diesel engine
DE3339429A1 (de) * 1983-10-29 1985-05-09 Volkswagenwerk Ag, 3180 Wolfsburg Einrichtung zur reduzierung von abgas-schadstoffen
EP0152870A2 (fr) * 1984-02-21 1985-08-28 Comprex Ag Procédé de régénération de filtre d'échappement pour moteurs à combustion
JPS6155334A (ja) * 1984-08-27 1986-03-19 Toyota Motor Corp 内燃機関の空燃比制御装置
EP0194854A2 (fr) * 1985-03-11 1986-09-17 Honda Giken Kogyo Kabushiki Kaisha Appareil de commande de l'alimentation en carburant d'un moteur à combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 216 (M-502)[2272], 29. Juli 1986; & JP-A-61 055 334 (TOYOTA MOTOR CORP.) 19-03-1986 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992001861A1 (fr) * 1990-07-19 1992-02-06 Robert Bosch Gmbh Dispositif de commande de la temperature d'une resistance de mesure
US5699767A (en) * 1994-04-28 1997-12-23 Nissan Diesel Motor Co., Ltd. Gas engine
WO2000022288A1 (fr) * 1998-10-08 2000-04-20 Robert Bosch Gmbh Dispositif pour surveiller le processus de combustion dans des moteurs a combustion interne
US6668630B1 (en) 1998-10-08 2003-12-30 Robert Bosch Gmbh Device for monitoring the combustion process in internal combustion engines

Also Published As

Publication number Publication date
EP0280188A3 (en) 1988-12-21
DE3705972A1 (de) 1988-09-08
EP0280188B1 (fr) 1991-11-06
DE3865983D1 (de) 1991-12-12
US4903670A (en) 1990-02-27
JPS63227939A (ja) 1988-09-22
JP2617971B2 (ja) 1997-06-11

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