EP0027865B1 - Dispositif pour règler la vitesse d'un véhicule à moteur avec mise hors circuit d'au moins un cylindre d'un moteur à combustion interne à plusieurs cylindres - Google Patents

Dispositif pour règler la vitesse d'un véhicule à moteur avec mise hors circuit d'au moins un cylindre d'un moteur à combustion interne à plusieurs cylindres Download PDF

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Publication number
EP0027865B1
EP0027865B1 EP80104814A EP80104814A EP0027865B1 EP 0027865 B1 EP0027865 B1 EP 0027865B1 EP 80104814 A EP80104814 A EP 80104814A EP 80104814 A EP80104814 A EP 80104814A EP 0027865 B1 EP0027865 B1 EP 0027865B1
Authority
EP
European Patent Office
Prior art keywords
fed
input
output
cylinders
position pickup
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.)
Expired
Application number
EP80104814A
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German (de)
English (en)
Other versions
EP0027865A1 (fr
Inventor
Harald Collonia
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.)
Mannesmann VDO AG
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Mannesmann VDO AG
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Publication date
Application filed by Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0027865A1 publication Critical patent/EP0027865A1/fr
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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
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/02—Cutting-out
    • 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
    • F02D41/008—Controlling each cylinder individually
    • F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
    • 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
    • F02D41/0002—Controlling intake air
    • F02D2041/001—Controlling intake air for engines with variable valve actuation
    • F02D2041/0012—Controlling intake air for engines with variable valve actuation with selective deactivation of cylinders
    • 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
    • F02D2250/18—Control of the engine output torque
    • F02D2250/21—Control of the engine output torque during a transition between engine operation modes or states

Definitions

  • the invention relates to a device for regulating the driving speed of a motor vehicle with a multi-cylinder internal combustion engine according to the preamble of claim 1.
  • the actual value input of the controller is acted upon by a speed signal which limits the rate of change of the throttle valve opening angle.
  • a speed signal which limits the rate of change of the throttle valve opening angle.
  • the prior art includes various options for switching off cylinders, for example valve switching off (DE-A-27 37 613), crank drive switching off or switching off the combustion mixture supply. When the cylinder or cylinders is switched on and off, there are jumps in performance which have a disruptive effect on driving.
  • This object is achieved in that, for switching off at least one cylinder of the internal combustion engine, depending on at least one operating parameter, there are electrically controllable switch-off elements and electrical control signals for the switch-off elements generating means, which are acted upon by the output signal of the first position transmitter, and in that in the line between The output of the first position transmitter and the setpoint input of the controller are arranged as a function of the control signals for controlling the shutdown elements to generate a throttle jump.
  • the throttle valve jump or the jump of the organ influencing the fuel-air mixture can be adapted to different internal combustion engines and / or vehicles in a relatively simple manner. This enables simple optimization of the throttle valve jump. Furthermore, the storage of the optimized facilities for the different purposes is kept inexpensive.
  • the design of the device according to claim 3 provides that the throttle valve jump can be varied in such a manner depending on the speed that the speed has practically no effect on the smooth transition when switching cylinders on and off.
  • the above advantages are also achieved if not only a single switching stage is provided in which cylinders are switched on or off, but at least one further switching stage, for example for the gradual switching off of two cylinders and four cylinders of an eight-cylinder engine.
  • Claim 5 specifies a particularly inexpensive implementation of the means for generating the electrical control signals for controlling the shutdown elements.
  • the device is further configured so that with the switching on and off of cylinders, the transmission ratio of the transmission of the gaspe dalposition on the throttle valve or the organ influencing the fuel-air mixture is made possible.
  • the gear ratio between the accelerator pedal and throttle valve in partial cylinder operation can thus be adapted to the changed engine output. For example, when operating an eight-cylinder engine with four cylinders, it can be achieved that half the pedal travel is already at full throttle.
  • essentially differential amplifiers for each jump point are provided as means for changing the transmission ratio as well as for generating the throttle valve jump.
  • this differential amplifier one input of which is controlled as a function of the control signals for controlling the shutdown elements, in conjunction with the other circuit elements, the ratio of feedback resistance to input resistance of the one input is dependent on the control signals with which the base connections of the Transistors are controlled, the collector-emitter circuit is located at the input of the differential amplifier, is changed. This changes both the effective amplification of the differential amplifier by the control signals at the base connections mentioned and the setpoint signal level at the setpoint input, the controller, which determines the throttle valve position or the jump in the throttle valve.
  • 1 denotes a first electrical position transmitter, which is coupled to an accelerator pedal 2.
  • the electrical position transmitter is connected via a line 3 to a setpoint input 4 of an electrical positioner 5.
  • the actual value input of this controller is labeled 6. It is connected via a second electrical position transmitter 7, a motor 8, which adjusts a throttle valve 9.
  • the electrical controller 5 which is designed as a positioner, can contain, in a known manner, an amplifier, which is connected on the input side to a comparator for comparing the setpoint value and the actual value, and, if appropriate, internal feedback circuits.
  • the arrangement described so far belongs to a so-called electric accelerator pedal, since a change in the position of the accelerator pedal 2 is implemented by the electric controller 5 in a corresponding adjustment of the throttle valve 9.
  • the position of the throttle valve 9 is reported back to the actual value input until the actual value signal has become the same as the desired value signal at the desired value input 4.
  • the first position transmitter also feeds two differential amplifiers 10, 11, namely in their first inputs 12 and 13, respectively.
  • the second input of differential amplifiers 14 and 15 is fed with a threshold signal.
  • a voltage of a predetermined polarity only arises at the output of each differential amplifier if the output signal of the first position transmitter contains the threshold value signal U or U ? to the second input of the differential amplifier.
  • These differential amplifiers fed with threshold signals represent means for generating electrical control signals for controlling shutdown elements, which are connected to a terminal 16 for the seventh and eighth cylinders and are connected to a terminal 17 for the fifth and six cylinders. An eight-cylinder engine is assumed.
  • the switch-off elements preferably consist of solenoid valves which are assigned to the pistons of an injection pump and which belong to the corresponding cylinders.
  • Terminals 16 and 17 are connected to the collector-emitter path of a transistor 18 or 19, the base of which is fed by the output of differential amplifier 10 or 11 via a base resistor 20 or 21.
  • the outputs of the differential amplifiers 10 and 11 thus form the control signals for controlling the shutdown elements.
  • control signals are also fed into means for changing the gear ratio as a function of the activation of the shutdown elements, which at the same time cause a jump in the throttle valve when individual cylinders are switched on or off.
  • a differential amplifier 23 which is inserted into line 3.
  • a first input 24 of the differential amplifier is in conductive connection with the first electrical position transmitter 1.
  • the second input 25 of the differential amplifier is fed back to the output via a first resistor 26.
  • the second input connects two series circuits connected in parallel, each with a second or third resistor 27 or 28, to the series connection with a collector-emitter path of a transistor 29, 30.
  • the base connections of the transistors 29 and 30 are each supplied with the output signal of the differential amplifier 11 or 10 via a base resistor 20a or 21a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Claims (7)

1. Dispositif pour la régulation de la vitesse de marche d'un véhicule automobile pourvu d'un moteur à combustion interne à plusieurs cylindres, comportant un régulateur électrique (5) dont l'entrée de valeur de consigne (4) reçoit le signal de sortie d'un premier capteur électrique de position (1) accouplé à une pédale d'accélérateur (2) et dont l'entrée de valeur réelle (6) reçoit le signal de sortie d'un second capteur électrique de position (7), qui est accouplé avec un organe de manoeuvre d'un dispositif électrique de manoeuvre (8), qui coopère avec un élément (papillon 9) influençant le mélange air-carburant, caractérisé en ce que, pour la coupure d'au moins un cylindre du moteur à combustion interne, il est prévu des éléments de coupure pouvant être commandés électriquement en fonction d'au moins un paramètre de fonctionnement et des moyens (10 à 15) produisant des signaux électriques de commande des éléments de coupure et qui sont sollicités par un signal de sortie du premier capteur de position (1), et en ce qu'il est prévu dans le conducteur (3) reliant la sortie du premier capteur de position (1) à l'entrée de valeur de consigne (4) du régulateur (5), des moyens (23 à 30) commandés en fonction des signaux assurant la commande des éléments de coupuré pour produire un échelon d'avance de papillon.
2. Dispositif selon la revendication 1, caractérisé en ce que les moyens (23-30) pour produire l'échelon de mouvement du papillon peuvent être programmés électroniquement.
3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que les moyens (23-30) pour produire l'échelon de mouvement de papillon sont sollicités, pour la modification de la hauteur d'échelon en fonction de la vitesse de rotation, par une tension proportionnelle à la vitesse de rotation..
4. Dispositif selon la revendication 1, caractérisé en ce que les moyens (10-15) pour produire des signaux électriques de commande sont agencés pour la commande échelonnée des éléments de coupure et pour la coupure échelonnée d'un certain nombre de plusieurs cylindres en fonction du signal de sortie du premier capteur de position (1).
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les moyens (10-15) pour produire des signaux électriques de commande des éléments de coupure comportent un amplificateur de différence (10, 11) dont une première entrée (12, 13) reçoit le signal de sortie du premier capteur de position (1), dont une seconde entrée (14, 15) reçoit un signal de valeur de seuil (U2, Ui) réglé de façon fixe et dont la sortie coopère avec les éléments de coupure des cylindres (par exemple des électrovalves d'une installation d'injection).
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce qu'il est prévu dans la liaison existant entre la sortie du premier capteur de position (1) et l'entrée de valeur de consigne (4) du régulateur (5) des moyens pour modifier le rapport de transmission (23-32) ou le degré de transmission du signal de sortie du premier capteur de position (1) en fonction de l'actionnement des éléments de coupure.
7. Dispositif selon la revendication 6, caractérisé en ce que, comme moyens pour modifier le rapport de transmission et pour produire l'échelon de mouvement du papillon (23-32), il est prévu, dans un conducteur entre la sortie du premier capteur de position (1) et l'entrée de valeur de consigne (4) du régulateur (5), un autre amplificateur de différence (23) dont une première entrée (24) est reliée à la sortie du premier capteur de position (1) et dont une seconde entrée (25) est reliée par l'intermédiaire d'une première résistance (26) à sa sortie, qui est reliée à l'entrée de valeur de consigne du régulateur (5), et qui peut en outre être amenée à un potentiel nul par l'intermédiaire d'au moins un circuit-série se composant d'une seconde ou d'une troisième résistance (27, 28) et de la voie collecteur-émetteur d'un transistor respectif (29, 30) et en ce que les connexions de base des transistors (29, 30) sont reliées aux sorties des amplificateurs de différence (11, 10) sollicités par les valeurs de seuil.
EP80104814A 1979-10-24 1980-08-14 Dispositif pour règler la vitesse d'un véhicule à moteur avec mise hors circuit d'au moins un cylindre d'un moteur à combustion interne à plusieurs cylindres Expired EP0027865B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2942851 1979-10-24
DE19792942851 DE2942851A1 (de) 1979-10-24 1979-10-24 Einrichtung zum abschalten mindestens eines zylinders einer mehrzylinder-brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0027865A1 EP0027865A1 (fr) 1981-05-06
EP0027865B1 true EP0027865B1 (fr) 1984-02-29

Family

ID=6084189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104814A Expired EP0027865B1 (fr) 1979-10-24 1980-08-14 Dispositif pour règler la vitesse d'un véhicule à moteur avec mise hors circuit d'au moins un cylindre d'un moteur à combustion interne à plusieurs cylindres

Country Status (2)

Country Link
EP (1) EP0027865B1 (fr)
DE (2) DE2942851A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2947688C2 (de) * 1979-11-27 1981-10-22 Daimler-Benz Ag, 7000 Stuttgart Einrichtung zur Regelung einer mehrzylindrigen Brennkraftmaschine
JPS5841232A (ja) * 1981-09-02 1983-03-10 Hitachi Ltd 気筒数変換形燃料噴射ポンプの制御装置
GB2105872A (en) * 1981-09-02 1983-03-30 Ford Motor Co Control system for an intermal combustion engine
DE3313038A1 (de) * 1983-04-12 1984-10-18 Robert Bosch Gmbh, 7000 Stuttgart Mehrzylinder-brennkraftmaschine mit abschaltbaren zylindergruppen
GB2222702B (en) * 1988-07-25 1993-03-10 Nissan Motor Wheel slippage suppresive throttle control system for automotive internal combustion engine
US5431139A (en) * 1993-12-23 1995-07-11 Ford Motor Company Air induction control system for variable displacement internal combustion engine
US5374224A (en) * 1993-12-23 1994-12-20 Ford Motor Company System and method for controlling the transient torque output of a variable displacement internal combustion engine
US6808471B1 (en) * 2003-05-08 2004-10-26 General Motors Corporation Methods and apparatus for providing security for electronically-controlled cylinder activation and deactivation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765394A (en) * 1972-09-05 1973-10-16 Gen Motors Corp Split engine operation
FR2356007A1 (fr) * 1976-06-24 1978-01-20 Henry Jancelin Georges Dispositif de servo-commande electronique de l'admission des gaz dans les moteurs a explosion
US4104991A (en) * 1976-08-23 1978-08-08 Ford Motor Company Circuit for controlling the operability of one or more cylinders of a multicylinder internal combustion engine
JPS5457022A (en) * 1977-10-14 1979-05-08 Nissan Motor Co Ltd Fuel supply cylinder number control system
DE2751125A1 (de) * 1977-11-16 1979-05-17 Bosch Gmbh Robert Steuereinrichtung fuer eine brennkraftmaschine

Also Published As

Publication number Publication date
EP0027865A1 (fr) 1981-05-06
DE2942851A1 (de) 1981-05-07
DE3066752D1 (en) 1984-04-05

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