EP0089482A1 - Procédé pour la commande électronique de l'àdmission de carburant dans un moteur à combustion à auto-allumage - Google Patents

Procédé pour la commande électronique de l'àdmission de carburant dans un moteur à combustion à auto-allumage Download PDF

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Publication number
EP0089482A1
EP0089482A1 EP83101319A EP83101319A EP0089482A1 EP 0089482 A1 EP0089482 A1 EP 0089482A1 EP 83101319 A EP83101319 A EP 83101319A EP 83101319 A EP83101319 A EP 83101319A EP 0089482 A1 EP0089482 A1 EP 0089482A1
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EP
European Patent Office
Prior art keywords
speed
control device
fuel
value
dependent
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
EP83101319A
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German (de)
English (en)
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EP0089482B1 (fr
Inventor
Rainer Dipl.-Ing. Buck
Thomas Dipl.-Ing. Küttner
Fridolin Dr. Piwonka
Wolf Ing.-Grad. Wessel
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6158332&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0089482(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0089482A1 publication Critical patent/EP0089482A1/fr
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    • 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
    • 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
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/061—Introducing corrections for particular operating conditions for engine starting or warming up the corrections being time dependent
    • 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
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • 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
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
    • 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

Definitions

  • the invention relates to an electronic control device for a fuel metering system of an internal combustion engine with auto-ignition according to the preamble of the main claim.
  • an electronic diesel controller with air and fuel quantity pilot control is known. Its start control processes a start and speed signal, as well as the signal from a temperature sensor.
  • this known electronic diesel regulator is generally able to provide satisfactory results, problems can arise when starting with a warm engine. If, for example, the tank was run empty on a warm machine and thus the injection lines are partly empty, then after filling up the tank only a small temperature-dependent starting quantity is released at start-up, which may not be sufficient for a safe start.
  • One of the objects of the invention is now to show ways in which such special cases can also be safely managed. Finally, the aim is to avoid processing a temperature signal for reasons of savings.
  • a temperature signal can be dispensed with, which means a saving of a temperature sensor.
  • pump tolerances in series production are compensated for the starting quantity.
  • the start-up time is shortened considerably with empty injection lines and a warm engine.
  • FIG. 1 shows an extremely rough block diagram of an electronically controllable fuel metering system of an internal combustion engine with auto-ignition
  • FIG. 2 shows a diagram of the fuel quantity during the start over time.
  • FIG. 3 shows control characteristics of the starting quantity versus the speed
  • FIG. 4 shows a block diagram of the electronic control device according to the invention for a diesel fuel metering system
  • FIG. 5 shows a flow chart to illustrate the invention in the case of a problem being solved by means of a computer.
  • the exemplary embodiments relate to electronic control devices for fuel metering systems in internal combustion engines with auto-ignition.
  • sensors for the accelerator pedal position, the speed and a start switch with 10, 11 and 12 are designated. Their output lines are led to a signal processing unit 13, at the output of which a fuel quantity target signal is provided. It controls an electromagnetic signal box 14 for setting the injection quantity, e.g. a diesel distributor pump.
  • Figure 2 shows the starting amount plotted against time. After actuation of the starter and the presence of a minimum speed, a certain amount of fuel QSTO is released for a period of time T. It is this for example the full load quantity, 80% of the full load quantity etc. After the time period T there is an increase in the fuel quantity.
  • a solid line shows a ramp function, which can be time and / or speed dependent. Lung-shaped increases as well as an increase in a steady but non-linear manner are shown in dashed lines.
  • the starting quantity shown in FIG. 2 remains effective up to a speed threshold.
  • the injection quantity of accelerator pedal, speed and other influencing variables is then determined.
  • the accelerator pedal has no influence on the injection quantity during the starting process.
  • a solution is also conceivable in which the accelerator pedal can only exert an influence during the starting process if the amount of fuel specified by the accelerator pedal is greater than the starting amount.
  • a speed-dependent reduction in the starting quantity is used to avoid excessive bursts of smoke during starting. It becomes effective by selecting a minimum value above a certain speed.
  • An example of the speed limitation is shown in FIG.
  • FIGS. 2 and 3 show a block diagram of an embodiment of the electronic control device according to the invention.
  • a start signal switch 12 is coupled via a switch 20 to a timing element 21 and a basic quantity signal generator stage 22.
  • the output of the timing element 21 is followed by a function generator 23 for providing a time-dependent additional quantity signal QKST1.
  • the outputs of both signal generator stages 22 and 23 lead to a summation point 24, which is followed by a series connection of minimum value selection stage 25, maximum value selection stage 26 and ultimately the electromagnetic signal box 14.
  • the output signal of the speed sensor 11 goes to the control input of the switch 20 and also to a function generator 28 which outputs the speed-dependent quantity signal QKSTn on the output side and supplies it to the minimum value stage 25 as its second input signal.
  • the maximum value stage 26 also receives a control signal from a function generator 30 which controls the setpoint value of the injection quantity during normal operation.
  • a toggle switch 26 ' is drawn as a separate element in FIG. 4 and, depending on the desired embodiment, can replace the maximum value selection stage 26.
  • the changeover switch 26 ' is controlled by means of a speed-dependent signal, the transition from start control to normal control then being purely speed-dependent.
  • FIG. 5 shows a flow chart for the computer-controlled simulation of the above-mentioned functional profiles.
  • the start program begins at block 40 according to this flow chart shown in FIG. 5.
  • block 44 also comes into effect after no fuel metering occurs.
  • flag B is set to 1 (47) and a time count 48 to 0.
  • the speed dependence of the fuel metering is calculated in a special program step 50 and a starting quantity with the value QKST is defined in block 49 in the following program step 51.
  • a query 52 decides whether the starting quantity value is larger or smaller than the current speed-dependent quantity value QKSTn. As long as it has not yet reached this value, there is a return to the program. However, if the starting quantity has reached the speed-dependent value, then the speed dependency dominates and the respective starting quantity is assigned this value.
  • the flow chart shows the following program flow.
  • a starting process is only defined as such above a speed of 20 revolutions per minute. Fuel is only measured above a speed of 60 revolutions per minute. This is followed by a time period T with constant fuel metering and then a fuel metering with increasing function, the increase depending on the type of increase, see block 58. This increase now lasts until the speed-dependent quantity characteristic QKSTn according to FIG. 3 is reached. If it has been reached, the speed-dependent cut-off dominates, so that the metered fuel quantity is no longer continuously increased, but is reduced according to the characteristic curve in FIG. 3. Above one At a speed of 800 revolutions per minute, the starting process is considered finished and the normal program begins.
  • the output values of blocks 49, 50 and 58 in particular can be variable in order to be able to variably set basic fuel quantity values, speed-dependent fuel quantity values and growth rates.
  • the re-starting point of the program run can also be selected differently than is shown in FIG. 5.

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  • 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)
EP83101319A 1982-03-16 1983-02-11 Procédé pour la commande électronique de l'àdmission de carburant dans un moteur à combustion à auto-allumage Expired EP0089482B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3209433 1982-03-16
DE3209433A DE3209433C2 (de) 1982-03-16 1982-03-16 Verfahren zur Steuerung der Kraftstoffzufuhr zu einer Brennkraftmaschine mit Selbstzündung

Publications (2)

Publication Number Publication Date
EP0089482A1 true EP0089482A1 (fr) 1983-09-28
EP0089482B1 EP0089482B1 (fr) 1986-11-12

Family

ID=6158332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101319A Expired EP0089482B1 (fr) 1982-03-16 1983-02-11 Procédé pour la commande électronique de l'àdmission de carburant dans un moteur à combustion à auto-allumage

Country Status (4)

Country Link
US (1) US4516550A (fr)
EP (1) EP0089482B1 (fr)
JP (1) JPS58162738A (fr)
DE (2) DE3209433C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627809A1 (fr) * 1988-02-25 1989-09-01 Orbital Eng Pty
DE4109405A1 (de) * 1991-03-22 1992-09-24 Daimler Benz Ag Startvorrichtung fuer luftverdichtende einspritzbrennkraftmaschinen, insbesondere fuer nutzfahrzeuge
EP0933520A1 (fr) * 1998-02-02 1999-08-04 Detroit Diesel Corporation Prodédé de démarrage pour un moteur à combustion interne

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6185555A (ja) * 1984-10-04 1986-05-01 Nippon Denso Co Ltd デイ−ゼルエンジンの吸気密度補正制御装置
JPS63248945A (ja) * 1987-04-06 1988-10-17 Toyota Motor Corp 内燃機関の燃料噴射制御装置
JPH03258951A (ja) * 1990-03-08 1991-11-19 Toyota Motor Corp 内燃機関の機関制御装置
JP2808921B2 (ja) * 1991-05-24 1998-10-08 トヨタ自動車株式会社 ディーゼルエンジンの燃料噴射量制御装置
US5231962A (en) * 1991-09-27 1993-08-03 Nippondenso Co., Ltd. Fuel injection control system with split fuel injection for diesel engine
DE4229540C2 (de) * 1992-09-04 2002-03-14 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19537786A1 (de) * 1995-10-11 1997-04-17 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
GB9521846D0 (en) * 1995-10-25 1996-01-03 Lucas Ind Plc Controller for internal combustion engine
DE19728721A1 (de) * 1997-07-04 1999-01-07 Bayerische Motoren Werke Ag Verfahren zum Zumessen einer Kraftstoffmenge im Startfall einer Brennkraftmaschine
JPH11236842A (ja) * 1998-02-24 1999-08-31 Isuzu Motors Ltd ディーゼルエンジンの電子制御燃料噴射装置
US6269801B1 (en) 1999-10-29 2001-08-07 Ford Global Technologies, Inc. System for priming a diesel fuel system
JP2001152936A (ja) 1999-11-29 2001-06-05 Isuzu Motors Ltd エンジンの燃料噴射制御装置
DE10115969B4 (de) * 2001-03-27 2010-04-01 Volkswagen Ag Verfahren zur Ermittlung einer zugeführten Kraftstoffmenge während eines Startvorganges einer Verbrennungskraftmaschine
DE10349579B4 (de) * 2003-10-24 2013-01-03 Robert Bosch Gmbh Verfahren und Steuergerät zum Steuern eines Startvorganges einer Brennkraftmaschine
JP5381733B2 (ja) * 2010-01-13 2014-01-08 トヨタ自動車株式会社 内燃機関の制御装置
CN109882303B (zh) * 2019-04-23 2022-04-19 江门市大长江集团有限公司 燃油喷射控制方法、装置、设备和存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797465A (en) * 1970-07-04 1974-03-19 Nippon Denso Co Fuel injection system for internal combustion engines
US3982519A (en) * 1975-05-27 1976-09-28 Ford Motor Company Electronic-fuel-injection-system enrichment circuit for use during engine cranking
US4148282A (en) * 1975-03-19 1979-04-10 Robert Bosch Gmbh Method and apparatus for cold starting fuel injected internal combustion engines

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014185B2 (ja) * 1976-07-14 1985-04-11 株式会社デンソー 電子制御式燃料噴射装置
DE2650247A1 (de) * 1976-11-02 1978-05-11 Bosch Gmbh Robert Verfahren und einrichtung zur begrenzung der hoechstzulaessigen kraftstoffoerdermenge der kraftstoffeinspritzpumpe eines dieselmotors
JPS53136134A (en) * 1977-05-02 1978-11-28 Nissan Motor Co Ltd Starting fuel increasing equipment of diesel engine
DE2803750A1 (de) * 1978-01-28 1979-08-02 Bosch Gmbh Robert Verfahren und einrichtung zur kraftstoffzumessung bei brennkraftmaschinen
DE2820807A1 (de) * 1978-05-12 1979-11-22 Bosch Gmbh Robert Einrichtung zum einstellen eines mengenbestimmenden gliedes einer kraftstoffeinspritzpumpe bei einer brennkraftmaschine mit selbstzuendung
US4193380A (en) * 1978-06-22 1980-03-18 The Bendix Corporation Start and warm up features for electronic fuel management systems
US4329951A (en) * 1979-04-21 1982-05-18 Lucas Industries Limited Fuel injection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797465A (en) * 1970-07-04 1974-03-19 Nippon Denso Co Fuel injection system for internal combustion engines
US4148282A (en) * 1975-03-19 1979-04-10 Robert Bosch Gmbh Method and apparatus for cold starting fuel injected internal combustion engines
US3982519A (en) * 1975-05-27 1976-09-28 Ford Motor Company Electronic-fuel-injection-system enrichment circuit for use during engine cranking

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627809A1 (fr) * 1988-02-25 1989-09-01 Orbital Eng Pty
BE1002292A3 (fr) * 1988-02-25 1990-11-20 Orbital Eng Pty Moteur a injection de carburant a deux fluides.
DE4109405A1 (de) * 1991-03-22 1992-09-24 Daimler Benz Ag Startvorrichtung fuer luftverdichtende einspritzbrennkraftmaschinen, insbesondere fuer nutzfahrzeuge
EP0933520A1 (fr) * 1998-02-02 1999-08-04 Detroit Diesel Corporation Prodédé de démarrage pour un moteur à combustion interne

Also Published As

Publication number Publication date
EP0089482B1 (fr) 1986-11-12
DE3367653D1 (en) 1987-01-02
DE3209433A1 (de) 1983-09-22
US4516550A (en) 1985-05-14
DE3209433C2 (de) 1993-12-09
JPH0433973B2 (fr) 1992-06-04
JPS58162738A (ja) 1983-09-27

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