EP0471169A2 - Procédé de régulation du mélange carburant alimenté dans les cylindres d'un moteur à combustion - Google Patents

Procédé de régulation du mélange carburant alimenté dans les cylindres d'un moteur à combustion Download PDF

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Publication number
EP0471169A2
EP0471169A2 EP91110232A EP91110232A EP0471169A2 EP 0471169 A2 EP0471169 A2 EP 0471169A2 EP 91110232 A EP91110232 A EP 91110232A EP 91110232 A EP91110232 A EP 91110232A EP 0471169 A2 EP0471169 A2 EP 0471169A2
Authority
EP
European Patent Office
Prior art keywords
stroke
valve means
internal combustion
cylinders
combustion engine
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
EP91110232A
Other languages
German (de)
English (en)
Other versions
EP0471169A3 (en
EP0471169B1 (fr
Inventor
Bernhard Dr. Geringer
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz 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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Publication of EP0471169A2 publication Critical patent/EP0471169A2/fr
Publication of EP0471169A3 publication Critical patent/EP0471169A3/de
Application granted granted Critical
Publication of EP0471169B1 publication Critical patent/EP0471169B1/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
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/0007—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for using electrical feedback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • 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
    • F02D41/1497—With detection of the mechanical response of the engine
    • 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 a method for regulating the mixture or fuel quantity supplied to the cylinders of an internal combustion engine according to the preamble of patent claim 1.
  • DE-OS 38 31 663 discloses a fuel injection system for internal combustion engines, in which the actual value of the fuel supply to the cylinders of the internal combustion engine is detected by measuring the stroke movement of a valve means in a metering device, the amount of fuel to be supplied taking the actual value into account as a function of engine parameters determined in a control unit and passed on to the metering device as a control signal.
  • the object of the invention is therefore to improve a generic control for the mixture or fuel quantity metering so that the actual value of the metered quantity can be determined with great accuracy when using simple and inexpensive sensors.
  • the duration of the stroke of the valve means provided in the metering device is measured in order to record the actual value of the mixture quantity fed to each cylinder in the case of mixture-compressing internal combustion engines or the fuel quantity in the case of air-compressing internal combustion engines.
  • the exceeding of a certain stroke threshold value of the valve means is determined by means of a position sensor.
  • the length of time between the exceeding of this threshold value and the subsequent drop below the threshold value when the valve means is closed, that is to say the stroke duration, is a measure of the actual value of the mixture or fuel quantity supplied.
  • This actual value is recorded for all cylinders of the internal combustion engine and, to compensate for differences in the filling or injection quantity of each cylinder, is regulated to a value which is the same for all cylinders of the internal combustion engine by corresponding actuation of the valve means.
  • a control circuit is shown schematically using the example of a four-cylinder internal combustion engine.
  • the internal combustion engine designated 1 is of course not limited to a specific number of cylinders 2, but can have any number.
  • Each cylinder 2 is assigned a position sensor 3, which always outputs a signal to the control electronics 5 via lines 4 when the stroke of the valve means of the mixture or fuel metering device assigned to the respective cylinder, not shown here for the sake of simplicity, overruns and then falls below.
  • the stroke duration is determined from the time difference between the two signals (exceeding and falling below) of each cylinder.
  • control electronics 5 With the help of the control electronics 5, the actual values of the stroke duration and thus the filling or fuel quantity of each cylinder are evaluated and the stroke duration regulated to a value that is the same for all cylinders 2 of the internal combustion engine 1.
  • the control signals determined in the control electronics pass via lines 6 to the adjusting elements 7 assigned to the individual cylinders 2, which control the filling or fuel quantity for each cylinder individually. In this way, a desired equality of all cylinders of the internal combustion engine can be achieved.
  • valve means of the (mixture) metering device are the inlet valves assigned to each cylinder.
  • a position sensor 3 is arranged on each of the inlet valves, which emits a signal whenever the valve exceeds a certain stroke value and falls below.
  • This threshold value for the stroke can be chosen freely, but is advantageously just above the start-up (11) or discharge ramp 12 of the stroke course of the valve.
  • These valves can be controlled individually via the control elements 7, for example in the form of an electromagnetic valve control.
  • the metering device is the injection device and the valve means are implemented, for example, via controllable needle valves which meter the amount of fuel.
  • the regulation of the stroke duration of the valve means can additionally take place as a function of further operating parameters 8, such as motor temperature T, ambient pressure p, motor speed n and motor load M), which are processed in the control electronics 5.
  • FIG. 2 shows the stroke h over time t using the example of two intake valves of the internal combustion engine.
  • a position sensor is arranged on each valve. If the valve stroke h of the stroke curve 9 of the first valve exceeds a certain threshold value h s , the position sensor outputs a time signal t 1 to the control electronics 5. When the valve closes, the stroke h again passes through the threshold h s and in turn emits a signal (t2) to the control electronics 5.
  • the threshold h s is set as low as possible for precise determination of the stroke duration; A value just above the start-up ramp 11 in the course of the stroke, as shown in FIG. 2, has proven to be an advantageous value.
  • the time difference ⁇ t 1 is calculated for the stroke duration of the first valve from these two signals. Since the stroke shape shows only very small deviations and only the times for the Scatter opening and closing due to material scatter, temperature and pressure influences, the time period t 1 and thus the stroke time is a sufficiently precise measure of the filling of the cylinder.
  • the figure shows a further stroke profile 10 of a second valve of the internal combustion engine.
  • the times t 1 and t 2 of passing the stroke h through the threshold value h s are measured analogously to the previously described method, and a time difference is derived therefrom ⁇ t2 determined in the control electronics 5.
  • the values for the differences ⁇ t1, ⁇ t2 and further difference values for the other cylinders of the internal combustion engine are generally different.
  • a uniform value for the stroke duration possibly dependent on further operating parameters, can be determined, which is output to the control elements for the valve means, for example electromagnetically controllable valves.
  • uniform filling of the cylinders can also be achieved in the particularly critical idling range via the individually controllable valves.
  • the determination of the filling of the cylinders or the amount of fuel by means of position sensors and evaluation of the stroke duration instead of a pure stroke measurement with subsequent evaluation by time integration over the course of the stroke is particularly inexpensive according to the invention with higher accuracy, since such sensors have been used many times, for example as a sensor for determining the Crank angle position, are in use. This also increases the control accuracy of the method accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
EP91110232A 1990-08-01 1991-06-21 Procédé de régulation du mélange carburant alimenté dans les cylindres d'un moteur à combustion Expired - Lifetime EP0471169B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4024369 1990-08-01
DE4024369A DE4024369A1 (de) 1990-08-01 1990-08-01 Verfahren zur regelung der den zylindern einer brennkraftmaschine zugefuehrten gemisch- bzw. kraftstoffmenge

Publications (3)

Publication Number Publication Date
EP0471169A2 true EP0471169A2 (fr) 1992-02-19
EP0471169A3 EP0471169A3 (en) 1992-12-02
EP0471169B1 EP0471169B1 (fr) 1994-03-02

Family

ID=6411415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91110232A Expired - Lifetime EP0471169B1 (fr) 1990-08-01 1991-06-21 Procédé de régulation du mélange carburant alimenté dans les cylindres d'un moteur à combustion

Country Status (4)

Country Link
US (1) US5127384A (fr)
EP (1) EP0471169B1 (fr)
JP (1) JP2587331B2 (fr)
DE (2) DE4024369A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59410166D1 (de) * 1993-12-16 2002-09-12 Volkswagen Ag Verfahren zur Gewinnung von Triggersignalen für die Regelung der Energie-umsetzung im Brennraum einer Brennkraftmaschine
EP0833043A1 (fr) 1996-09-26 1998-04-01 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Méthode de fonctionnement pour moteur à combustion interne à cylindres multiples
DE19934503C1 (de) * 1999-07-22 2000-12-14 Siemens Ag Verfahren zum Bestimmen des Hubes eines Ventils, insbesondere eines Gaswechselventils einer Brennkraftmaschine
DE10046221A1 (de) * 2000-09-19 2002-10-02 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zur Steuerung der zylinderselektiven Füllung bei Verbrennungsmotoren mit variablem Ventiltrieb
JP3797119B2 (ja) * 2001-02-27 2006-07-12 日産自動車株式会社 内燃機関の吸気制御装置
WO2003046355A1 (fr) * 2001-11-26 2003-06-05 Ina-Schaeffler Kg Procede et dispositif de coordination du remplissage des cylindres d'un moteur a combustion interne a plusieurs cylindres
DE102013207838B3 (de) * 2013-04-29 2014-09-11 Mtu Friedrichshafen Gmbh Gemischverdichtender Gasmotor und Verfahren zur Gleichstellung von mindestens zwei Zylindern eines gemischverdichtenden Gasmotors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2079007A (en) * 1980-06-30 1982-01-13 Diesel Kiki Co Fuel injection apparatus for internal combustion engines
DE3343394A1 (de) * 1982-11-30 1984-05-30 Diesel Kiki Co. Ltd., Tokyo Elektronisch geregelte kraftstoffsteuereinrichtung fuer einen verbrennungsmotor
US4494507A (en) * 1982-07-19 1985-01-22 Nissan Motor Company, Limited Control system for a fuel injection internal combustion engine including a fuel injection rate detector

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5465222A (en) * 1977-11-04 1979-05-25 Nissan Motor Co Ltd Electronic control fuel injector for internal combustion engine
US4280465A (en) * 1980-07-16 1981-07-28 Brunswick Corporation Throttle control for an electronic fuel-injection control circuit
DE3426799A1 (de) * 1984-07-20 1986-01-23 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur regelung der einer brennkraftmaschine einzuspritzenden kraftstoffmenge
JPS61135952A (ja) * 1984-12-06 1986-06-23 Diesel Kiki Co Ltd 電子式燃料噴射装置
JPH07116975B2 (ja) * 1985-05-23 1995-12-18 株式会社ゼクセル 燃料噴射装置
IT1187977B (it) * 1986-03-21 1987-12-23 Weber Spa Trasduttore non lineare della posizione di una valvola di controllo della portata di aria addotta ai cilindri di un motore endotermico
DE3633107A1 (de) * 1986-04-10 1987-10-15 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung fuer brennkraftmaschinen
JP2521086B2 (ja) * 1987-04-06 1996-07-31 株式会社ゼクセル 燃料噴射ポンプの制御装置
JPH0199948U (fr) * 1987-12-24 1989-07-05
DE3831663A1 (de) * 1988-09-17 1990-03-22 Pierburg Gmbh Brennstoffeinspritzsystem
JP2688953B2 (ja) * 1988-11-11 1997-12-10 株式会社いすゞセラミックス研究所 電磁力駆動バルブ制御装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2079007A (en) * 1980-06-30 1982-01-13 Diesel Kiki Co Fuel injection apparatus for internal combustion engines
US4494507A (en) * 1982-07-19 1985-01-22 Nissan Motor Company, Limited Control system for a fuel injection internal combustion engine including a fuel injection rate detector
DE3343394A1 (de) * 1982-11-30 1984-05-30 Diesel Kiki Co. Ltd., Tokyo Elektronisch geregelte kraftstoffsteuereinrichtung fuer einen verbrennungsmotor

Also Published As

Publication number Publication date
DE4024369A1 (de) 1992-02-06
EP0471169A3 (en) 1992-12-02
US5127384A (en) 1992-07-07
EP0471169B1 (fr) 1994-03-02
JP2587331B2 (ja) 1997-03-05
JPH04262033A (ja) 1992-09-17
DE59101082D1 (de) 1994-04-07

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