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EP0134310B1 - Agencement de soupape pour commander la vitesse de ralenti de moteurs à combustion interne - Google Patents

Agencement de soupape pour commander la vitesse de ralenti de moteurs à combustion interne Download PDF

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Publication number
EP0134310B1
EP0134310B1 EP83112877A EP83112877A EP0134310B1 EP 0134310 B1 EP0134310 B1 EP 0134310B1 EP 83112877 A EP83112877 A EP 83112877A EP 83112877 A EP83112877 A EP 83112877A EP 0134310 B1 EP0134310 B1 EP 0134310B1
Authority
EP
European Patent Office
Prior art keywords
valve arrangement
closing
arrangement according
lifting rod
spring
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
EP83112877A
Other languages
German (de)
English (en)
Other versions
EP0134310A2 (fr
EP0134310A3 (en
Inventor
Stephan Wietschorke
Gerhard Ruschek
Andreas Sausner
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
Original Assignee
Mannesmann VDO 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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0134310A2 publication Critical patent/EP0134310A2/fr
Publication of EP0134310A3 publication Critical patent/EP0134310A3/de
Application granted granted Critical
Publication of EP0134310B1 publication Critical patent/EP0134310B1/fr
Expired 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
    • 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

Definitions

  • the invention relates to a valve arrangement for regulating the idling speed of internal combustion engines by controlling the amount of air on the intake side of an intake line leading to the internal combustion engine, with an electromechanical steep element which has a lifting magnet through which a closing element can be moved against the force of a return spring via an actuating element.
  • Valve arrangements of this type serve to keep the idling speed of the engine as low as possible, but at the same time to regulate it in such a way that with additional loads such as e.g. the idle speed does not drop due to auxiliary units until the engine stalls.
  • a linear current is applied to the solenoid, which among other things. is formed as a function of the actual speed and which causes such an adjustment of the closing element that the actual speed reaches a predetermined target speed largely independently of disturbance variables (GB-A-2 066 930, DE-A-1 601 993) .
  • the actuator When the solenoid is de-energized, the actuator, and with it the closing element, is moved by the return spring either to the fully open or to the fully closed position. This is the case if no current is applied to the solenoid outside of the driving mode. This can also occur due to a defect in which the power supply to the solenoid is interrupted.
  • the object of the invention is therefore to provide a valve arrangement not in the preamble which, with a simple structure in the event of failure of the lifting magnet, ensures the lowest possible idling speed, but always sufficiently high against the engine stopping.
  • the closing member between a rest position and a working position is movable relative to the actuator and is in the rest position in a defined partial opening position of the valve passage. If the power supply to the solenoid fails, the components of the valve arrangement automatically move from a working position to their rest position. Since in the rest position the closing element is in a defined partial opening position of the valve passage, which is as small as possible, but is sufficient to ensure that the engine runs smoothly even with additional loads from additional units, a satisfactory idling operation is ensured.
  • the adjusting element is a lifting rod connected to the movable core of the lifting magnet.
  • the relative movement of the closing member to the actuator can be achieved in that the closing member is slidably arranged on the lifting rod. Special guides for the closing element are therefore not necessary.
  • the return spring is preferably acted upon by the return spring in the closing direction.
  • the closing element In order to hold the closing element in a defined position on the lifting rod when the lifting magnet is in a current supply, the closing element can be held in the working position against a stop arranged on the lifting rod.
  • the stroke of movement of the lifting rod can be limited in the closing direction by a stop.
  • the closing member can be acted upon in the closing direction by a compression spring and, in the partial opening position, can be in contact with a stop preventing a further closing movement.
  • the lifting magnet when the lifting magnet is de-energized, the lifting rod is displaced in the closing direction by the return spring until the closing member bears against this stop.
  • the return spring which has a greater force than the compression spring, does not move the lifting rod but the closing member further in the closing direction until the lifting rod also comes to rest against its stop.
  • the stop for the closing member is preferably the one lever arm of a two-armed lever pivotable about a pivot axis, the second lever arm of which can be acted upon by the lifting rod. This has the advantage that when the solenoid is de-energized, the closing movement of the closing member is only possible up to the partially open position. If the current supply is intact, the closing member can move without hindrance until it rests on the valve seat of the valve arrangement.
  • the closing member can be held in the rest position against a stop arranged on the lifting rod and can thus be in the correct partial opening position.
  • the locking element can be connected to the stop via a snap spring and by the snap spring on one side of the snap point of the snap spring against the stop of the idle position and on the other side of the snap point against the Be assigned to the division of labor.
  • An automatic movement of the closing member from the working position in the rest position is achieved in a simple manner in that the closing member can be struck on the valve seat of the valve arrangement and the lifting rod can be moved so far in the closing direction that the snap-in point of the snap-in lever can be overcome and the closing member can be stopped at the rest position is movable.
  • the force of the return spring loading in the closing direction is greater than the force of the snap spring.
  • An automatic movement of the closing member from the rest position into the working position can be achieved in that the closing member can be moved out of the partial opening position against a spring force in the opening direction, which is greater than the application force of the closing member at the connection of the rest position. If the working position is to be taken from the rest position after energizing the solenoid, the solenoid pulls the lifting rod in the opening direction until the snap point is passed. Due to its high spring force, the closing element can only take part in the movement in the opening direction when it is in contact with the working position, since the actuating force of the lifting magnet is then greater than the spring loading of the closing element in the closing direction.
  • an intake line 1 leading to a properly illustrated internal combustion engine is shown, in which a throttle valve 2 is rotatably arranged.
  • the area in front of throttle valve 2 can be connected to the area behind throttle valve 2 via a bypass 3.
  • the passage of the by-pass 3 is more or less shut off by a valve arrangement in that a closing member 4 or 4 'can be moved towards a valve seat 5.
  • the closing member 4 or 4 ' is axially displaceable between a rest position and a working position on the lifting rod 6 carrying a core 9 of a lifting magnet 7 and is loaded by a return spring 8 in the closing direction.
  • the solenoid 7 When the solenoid 7 is energized, the lifting rod 6 is moved more or less against the force of the return spring 8 in the opening direction.
  • the closing member 4 or 4 ' In the working position, which is assumed when the solenoid 7 is energized, the closing member 4 or 4 'is displaced towards the valve seat and is held in contact with a stop 10 of the lifting rod.
  • a lever arm 13 of a two-armed lever pivotable about a pivot axis 14 can be acted upon by the free end 12 of the lifting rod 6.
  • the other lever arm 15 of this lever is provided with a stop 16 against which the closing member 4 can come to rest.
  • the lever with its lever arms 13 and 15 and the stop 16 and the free end 12 of the lifting rod 6 are arranged with respect to one another such that when the solenoid 7 is energized and the closing member 4 is in contact with the stop 10, the end 12 of the lifting rod 6 does not comes to rest on lever arm 13.
  • the closing member 4 can thus come close to resting on the valve seat 5.
  • the free end 12 of the lifting rod 6 acts on the lever arm 13 so that it pivots in the closing direction.
  • the other lever arm 15 pivots in the opening direction and, via its stop 16, keeps the closing member 4 from the valve seat 5 in a partially open position. Since the force of the return spring 8 is greater than the force of the compression spring 11, this position is stably maintained when the solenoid 7 is de-energized.
  • a firmly supported compression spring 20 of higher force than the snap spring 19 is in the closing direction on the closing member 4 '.
  • the compression spring 20 is without tension.
  • the compression spring 20 and the return spring 8 first move together and then only the return spring 8 moves the closing member 4 'in the closing direction until the closing member 4' rests on the valve seat 5.
  • the return spring 8 causes the lifting rod 6 to move further until its end 12 comes to rest against the stop 17. Before this, however, the snap-over point of the snap spring 19 is passed over, so that it acts on the closing member 4 'against the stop 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (12)

1. Agencement de soupape pour régler la vitesse angulaire de ralenti de moteurs à combustion interne par commande de la quantité d'air du côté aspiration d'un conduit d'aspiration gagnant le moteur à combustion interne, cet agencement comportant un organe de manoeuvre électromécanique qui présente un aimant de levage par lequel un organe obturateur (4,4') peut être mû, par l'imtermediaire d'un élément d'ajustement (6), à l'encontre de la force d'un ressort de rappel, agencement caractérisé par le fait que l'organe obturateur (4,4') peut effectuer un mouvement par rapport à l'élément de réglage (6) entre une position de repos et une position de travail, en occupant en condition de repos une position déterminée d'ouverture partielle du canal de passage par la soupape.
2. Agencement de soupape selon la revendication 1, caractérisé par le fait que l'élémemt d'ajustement consiste en une tige (6) de levage, reliée au noyau mobile (9) de l'aimant (7) de levage.
3. Agencement de soupape selon la revendication 2. caractérisé par le fait que l'organe obturateur (4, 4') est monté à coulissement sur la tige (6) de levage.
4. Agencement de soupape selon l'une des revendications précédentes, caractérisé par le fait que la tige (6) de levage peut être chargée par le ressort de rappel (8) dans la direction de fermeture.
5. Agencement de soupape selon l'une das revendications précédentes, caractérisé par le fait que, dans la position de travail, l'organe obturateur (4,4') est maintenu appliqué contre une butée (10) située sur la tige (6) de levage.
6. Agencement de soupage selon l'une des revendications précédentes, caractérisé par le fait que la course de la tige (6) de soupape dans la direction de fermeture est limitée par l'intermédiaire d'une butée (17).
7. Agencement de soupape selon l'une des revendications précédentes, caractérisé par le fait que l'organe obturateur (4) peut être chargé dans la direction de fermeture par un ressort de pression (11) et est appliqué, dans la position d'ouverture partielle, contre une butée (16) empêchant une poursuite du mouvement de fermeture.
8. Agencement de soupape selon la revendication 7, caractérisé par le fait que la butée (16) est constituée par l'un (15) des bras d'un levier à deux bras qui peut pivoter autour d'un axe de pivotement (14), et dont le second bras (13) peut être soumis à l'action de la tige (6) de levage.
9. Agencement de soupape selon l'une des revendications 1 à 6, caractérisé par le fait que, dans la position de repos, l'organe obturateur (4') est maintenu appliqué contre une butée (18) située sur la tige (6) de levage.
10. Agencement de soupape selon la revendication 9, caractérisé par le fait que l'organe obturateur (4') est relié à la butée (18) par l'intermédiaire d'un ressort à déclic (19), et peut être chargé, par ce ressort à déclic (19), d'un côté du point de basculement dudit ressort à déclic (19) vers la butée (18) associée à la position de repos et, de l'autre côté dudit point de basculement, vers la butée (10) associée à la position de travail.
11. Agencement de soupape selon la revendication 10, caractérisé par le fait que l'organe obturateur (4') peut venir buter contre le siège (5) de soupape dudit agencement, la tige (6) de levage pouvant être mue, dans la direction de fermeture, de telle sorte que le point de basculement du ressort à déclic (19) puisse être surmonté et que l'organe obturateur (4') puisse accomplir un mouvement vers la butée (18) associée à la position de repos.
12. Agencement de soupape selon la revendication 10, caractérisé par le fait que l'organe obturateur (4') peut être mû dans la direction d'ouverture, à partir de la position d'ouverture partielle, à l'encontre d'une force élastique (ressort 20) qui est supérieure à la force (ressort 19) maintenant l'organe obturateur (4') appliqué contre la butée (18) associée à la position de repos.
EP83112877A 1983-08-11 1983-12-21 Agencement de soupape pour commander la vitesse de ralenti de moteurs à combustion interne Expired EP0134310B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833328949 DE3328949A1 (de) 1983-08-11 1983-08-11 Ventilanordnung
DE3328949 1983-08-11

Publications (3)

Publication Number Publication Date
EP0134310A2 EP0134310A2 (fr) 1985-03-20
EP0134310A3 EP0134310A3 (en) 1985-06-26
EP0134310B1 true EP0134310B1 (fr) 1986-09-03

Family

ID=6206271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112877A Expired EP0134310B1 (fr) 1983-08-11 1983-12-21 Agencement de soupape pour commander la vitesse de ralenti de moteurs à combustion interne

Country Status (3)

Country Link
US (2) US4662334A (fr)
EP (1) EP0134310B1 (fr)
DE (2) DE3328949A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4873954A (en) * 1988-07-27 1989-10-17 Colt Industries Inc. Fail-safe idle bypass system
US5018495A (en) * 1988-08-17 1991-05-28 Colt Industries, Inc. Automatic idle speed circuitry
US4873955A (en) * 1988-09-19 1989-10-17 Colt Industries Inc. Idle air flow shutoff valve
DE3909396A1 (de) * 1989-03-22 1990-10-04 Bayerische Motoren Werke Ag Vorrichtung zur bemessung der leerlaufluft von brennkraftmaschinen
US5121724A (en) * 1989-11-16 1992-06-16 Nissan Motor Company, Ltd. Multi-cylinder internal combustion engine with individual port throttles upstream of intake valves
KR0158139B1 (ko) * 1993-12-07 1998-12-15 전성원 전기부하에 따른 아이들 동작 보정장치 및 그 방법
AU756938B1 (en) 2002-04-04 2003-01-30 Hyundai Motor Company Engine idle speed control device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1601993C3 (de) * 1967-04-06 1974-02-28 Societe Industrielle De Brevets Et D'etudes S.I.B.E., Neuilly-Sur-Seine (Frankreich) Vergaser für Brennkraftmaschinen
DE2949884C2 (de) * 1979-12-12 1985-05-30 Vdo Adolf Schindling Ag, 6000 Frankfurt Ventilanordnung zur Regelung der Leelaufdrehzahl von Otto-Motoren
JPS56118529A (en) * 1980-02-22 1981-09-17 Nippon Denso Co Ltd Rotational speed controlling method for engine
US4412517A (en) * 1980-10-06 1983-11-01 Toyota Jidosha Kogyo Kabushiki Kaisha Idling speed control device of an internal combustion engine
IT1146472B (it) * 1981-07-10 1986-11-12 Weber Spa Carburatore per motori a combustione interna con organi ad azionamento elettromagnetico atti a disporre la valvola a farfalla in due posizioni di piccola apertura
US4438049A (en) * 1982-09-07 1984-03-20 Ford Motor Company Carburetor engine idle speed air bypass
DE3234468A1 (de) * 1982-09-17 1984-03-22 Robert Bosch Gmbh, 7000 Stuttgart Verfahren und vorrichtung zur steuerung mindestens eines drosselquerschnittes in einer steuerleitung

Also Published As

Publication number Publication date
US4662334A (en) 1987-05-05
EP0134310A2 (fr) 1985-03-20
DE3365919D1 (en) 1986-10-09
US4708110A (en) 1987-11-24
EP0134310A3 (en) 1985-06-26
DE3328949A1 (de) 1985-02-28

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