EP0108936B1 - Agencement électrique pour la régulation de la vitesse de ralenti d'un moteur à combustion interne - Google Patents

Agencement électrique pour la régulation de la vitesse de ralenti d'un moteur à combustion interne Download PDF

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Publication number
EP0108936B1
EP0108936B1 EP83110206A EP83110206A EP0108936B1 EP 0108936 B1 EP0108936 B1 EP 0108936B1 EP 83110206 A EP83110206 A EP 83110206A EP 83110206 A EP83110206 A EP 83110206A EP 0108936 B1 EP0108936 B1 EP 0108936B1
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EP
European Patent Office
Prior art keywords
electromagnet
combustion engine
idling
regulation
internal
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Expired
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EP83110206A
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German (de)
English (en)
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EP0108936A1 (fr
Inventor
Stephan Wietschorke
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Mannesmann VDO AG
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Mannesmann VDO AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00—Idling devices for carburettors
    • F02M3/06—Increasing idling speed
    • F02M3/07—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed
    • F02M3/075—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed the valve altering the fuel conduit cross-section being a slidable valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/002—Electric control of rotation speed controlling air supply
    • F02D31/003—Electric control of rotation speed controlling air supply for idle speed control
    • F02D31/005—Electric control of rotation speed controlling air supply for idle speed control by controlling a throttle by-pass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D2011/101—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles
    • F02D2011/102—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles at least one throttle being moved only by an electric actuator

Definitions

  • the invention relates to an electrical arrangement for controlling the idle speed of an internal combustion engine according to the preamble of the claim.
  • the idling speed of a motor vehicle gasoline engine is carried out by controlling the air quantities on the intake side with an electromechanical actuator which comprises a valve element which limits the effective intake cross section and can be moved by an electric drive element (DE-A-2949884).
  • a lifting magnet serves as the drive element, which can adjust a piston in a cylinder against the force of a spring.
  • the solenoid is subjected to an electrical variable, the actuating voltage, as a function of the difference between the actual idling speed and the target idling speed, in order to correct this difference by influencing the intake cross section.
  • the control voltage is formed as pure direct current, for which a differential amplifier can be used.
  • the direct voltage drives a direct current in the electromagnet or the lifting magnet, which generates a power loss with the coil resistance, which is converted into heat.
  • the power loss increases with increasing number of turns and a decreasing wire cross-section and limits the usable force generated by it for given dimensions of the electromagnet.
  • the controller In order to reduce the power loss in the components of the controller which generates the speed-dependent control voltage, it can be considered to form a clocked bipolar DC voltage as the control voltage, so that the voltage-generating amplifier elements in the controller only open or block completely must be and thus implement a low power loss. If the pulsed DC voltage is applied to the electromagnet, the current runs around a DC mean value according to the compensation functions, but here, too, the ohmic resistance of the coil consumes active power, which is uselessly converted into thermal energy and limits the force that can be generated by the electromagnet .
  • the object of the present invention is therefore to create an electrical arrangement for regulating the idling speed of an internal combustion engine of the type mentioned in the introduction, in which a compact electromagnet can be operated with only a small power loss for generating a large force which can be used by the actuator.
  • the electromagnet is thus supplemented with a capacitor connected in parallel to form a parallel resonant circuit.
  • the parallel resonant circuit is operated with a special control voltage, which has a sinusoidal component with a frequency substantially equal to the resonance frequency of the parallel resonant circuit.
  • the sine component is superimposed on a DC component, the amount of which is equal to the amplitude of the sine wave.
  • the amplitude and the DC voltage component are preferably controlled as a function of the difference between the actual idling speed and the target idling speed.
  • the steep voltage contains a DC component that is superimposed on the sinusoidal excitation.
  • the direct voltage component introduces the active power into the parallel resonant circuit, which is consumed by damping the coil resistance. This maintains the oscillating state of the parallel resonant circuit.
  • the effective power loss caused by the hysteresis losses in the electromagnet is reduced, since only Rayleigh loops in a quadrant of the hysteresis characteristic curve are traversed as a result of the DC component instead of complete hysteresis loops. The magnetic losses are therefore reduced.
  • the eddy current losses are also reduced, so that the total undesired heating due to direct and alternating voltage components is low for given coil properties.
  • the coil is preferably operated below the saturation limit.
  • a valve housing 1 is provided with a cylinder 2, in which a piston 3 is displaceable.
  • the piston 3 with its piston skirt 4 and the inside of the cylinder 2 forms a gap seal.
  • lateral slots 5 are formed in the cylinder 2, which are more or less covered by the piston skirt 4.
  • the slots 5 open into an annular channel 6.
  • the valve housing 1 with the cylinder 2 forms a gas path for an air flow from an inlet side 7 via the slots 5 and the annular channel 6 to the suction side 8 on the connector 9, see arrow 10.
  • the Socket opens into an intake line 11 with a throttle valve.
  • a lifting magnet 13 serves as an electromagnet, which is connected to the piston 3 via a lifting rod 14 and adjusts the latter against the force of a spring 15.
  • the solenoid 13 is connected in parallel to a capacitor 16, the terminals 17 and 18 of which are also connected to a control voltage source, not shown.
  • the control voltage is output by a controller output block 19 - see FIG. 2.
  • the control voltage depends on the control deviation Xw , which is a measure of the difference between the actual idling speed and the target idling speed.
  • 2 shows the parallel resonant circuit which the capacitor 16 with the capacitance C forms with the lifting magnet 13, the equivalent sizes of which are shown as inductance L and effective resistance R i . This parallel resistance is tuned to resonance with the sine component of the control voltage.
  • the curve shape of the control voltage is shown in FIG. 3. It has the form: that is, it is a sinusoidal oscillation which oscillates at the direct voltage mean ü
  • the coil current which is not shown in FIG. 3, is lagged by approximately ⁇ / 2 to the sine wave.
  • both the direct voltage component and the alternating voltage component of the actuating voltage in the lifting magnet 13 cause only a slight heating, since active power, hysteresis and eddy current losses are low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Claims (1)

  1. Agencement électrique pour la régulation de la vitesse de ralenti d'un moteur à combustion interne, agissant sur le remplissage au moyen d'un organe électromécanique d'actionnement, qui comporte un électro-aimant (13) recevant une tension d'actionnement dépendant de la vitesse de rotation, caractérisé en ce qu'il est prévu une tension d'actionnement de la forme:
    Figure imgb0004
    où s représente la fréquence angulaire et û la valeur moyenne dépendant de la vitesse de rotation, et en ce qu'il est prévu en parallèle à l'électro-aimant (13) un condensateur (16) d'une capacité suffisamment grande pour que celui-ci constitue avec l'électro-aimant (13) un circuit oscillant parallèle, dont la fréquence de résonance est sensiblement égale à s.
EP83110206A 1982-11-13 1983-10-13 Agencement électrique pour la régulation de la vitesse de ralenti d'un moteur à combustion interne Expired EP0108936B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823242043 DE3242043A1 (de) 1982-11-13 1982-11-13 Elektrische anordnung zur regelung der leerlaufdrehzahl eines verbrennungskraftstoffmotors
DE3242043 1982-11-13

Publications (2)

Publication Number Publication Date
EP0108936A1 EP0108936A1 (fr) 1984-05-23
EP0108936B1 true EP0108936B1 (fr) 1986-04-23

Family

ID=6178063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110206A Expired EP0108936B1 (fr) 1982-11-13 1983-10-13 Agencement électrique pour la régulation de la vitesse de ralenti d'un moteur à combustion interne

Country Status (2)

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EP (1) EP0108936B1 (fr)
DE (2) DE3242043A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929104A1 (de) * 1988-09-05 1990-03-15 Mitsubishi Electric Corp Regler fuer eine brennkraftmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3633260A1 (de) * 1986-09-30 1988-04-07 Bayerische Motoren Werke Ag Steuervorrichtung zur regelung der leerlaufluft fuer brennkraftmaschinen
DE3909396A1 (de) * 1989-03-22 1990-10-04 Bayerische Motoren Werke Ag Vorrichtung zur bemessung der leerlaufluft von brennkraftmaschinen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2940237A1 (de) * 1979-10-04 1981-04-16 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur regelung der leelaufdrehzahl einer brennkraftmaschine
GB2069185B (en) * 1979-11-27 1984-05-02 British Leyland Cars Ltd Automatic control of engine speed
DE2949884C2 (de) * 1979-12-12 1985-05-30 Vdo Adolf Schindling Ag, 6000 Frankfurt Ventilanordnung zur Regelung der Leelaufdrehzahl von Otto-Motoren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929104A1 (de) * 1988-09-05 1990-03-15 Mitsubishi Electric Corp Regler fuer eine brennkraftmaschine

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Publication number Publication date
EP0108936A1 (fr) 1984-05-23
DE3242043A1 (de) 1984-05-17
DE3363189D1 (en) 1986-05-28

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