EP0131694A2 - Dispositif pour commander la vitesse de ralenti d'un moteur à combustion interne - Google Patents

Dispositif pour commander la vitesse de ralenti d'un moteur à combustion interne Download PDF

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Publication number
EP0131694A2
EP0131694A2 EP84103881A EP84103881A EP0131694A2 EP 0131694 A2 EP0131694 A2 EP 0131694A2 EP 84103881 A EP84103881 A EP 84103881A EP 84103881 A EP84103881 A EP 84103881A EP 0131694 A2 EP0131694 A2 EP 0131694A2
Authority
EP
European Patent Office
Prior art keywords
spring
decoupling
baffle plate
valve element
return 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.)
Granted
Application number
EP84103881A
Other languages
German (de)
English (en)
Other versions
EP0131694B1 (fr
EP0131694A3 (en
Inventor
Andreas Sausner
Gerhard Ruschek
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 EP0131694A2 publication Critical patent/EP0131694A2/fr
Publication of EP0131694A3 publication Critical patent/EP0131694A3/de
Application granted granted Critical
Publication of EP0131694B1 publication Critical patent/EP0131694B1/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 device for regulating the idling speed of an internal combustion engine according to the preamble of claim 1.
  • Devices are used to regulate the idling speed in order to set the lowest possible speed, particularly in motor vehicles, which results in favorable consumption and emission values. If the filling of the internal combustion engine remains the same, fluctuations in the idling speed can occur in particular as a result of different loads which are caused by auxiliary units. In addition, the operating state of an internal combustion engine is close to the unstable speed range at which the idling speed is low, in which the engine can die if there is an additional load. Therefore, the air flow or the filling is not fixed at idle, but regulated according to the fluctuations in the idle speed.
  • an actuating current is applied to a solenoid, which is formed, inter alia, as a function of the actual speed, which causes the valve element connected to the solenoid to be adjusted such that the actual speed reaches a predetermined target speed largely independently of disturbance variables.
  • known devices for regulating the idling speed are designed such that the valve element is held in a closed position by the return spring, for example, when the solenoids are de-energized. Only when the solenoid is acted upon by the actuating current does the valve element move against the force of the return spring into a middle position between the fully open and closed position until there is a balance of forces between the magnetic force and the force of the return spring.
  • the valve element is usually designed as a baffle plate, which is movable against cutting an idle air passage opening.
  • the actuator can also be used to set a minimum air mass flow, which can be, for example, less than 2 kg / h.
  • a minimum air mass flow is limited by the fact that, in the previous design of the devices, each movement of the lifting magnet as an electric drive element was rigidly transmitted to the valve element or an impact plate as a sealing element. If the sealing element is moved dynamically against a sealing edge or cutting edge in such an arrangement, the sealing element bounces back from the sealing edge and thus causes an undesired opening.
  • the present invention is therefore based on the object of developing a device for regulating the idling speed of the type mentioned at the outset in such a way that it works precisely even in the region of small air mass flows to be set, in particular without rebounding.
  • a first system which is unable to vibrate consists of the movable part of the electric drive element, in particular a core, with a push rod and a return spring which is directly connected to the movable part of the drive element.
  • the second vibratory system is separated from this first vibratory system by the decoupling spring, which can transmit movements and forces from the first vibratory system to the second vibratory system.
  • the second oscillatory system essentially consists of the sealing member or the valve element, in particular a baffle plate and a counter spring, as well as connecting elements or connecting sections which connect the sealing member with the counter spring on the one hand and the decoupling spring on the other hand.
  • the counter spring is connected directly to the sealing element.
  • the two vibratory systems and the decoupling spring are dimensioned so that with periodic excitation of the first system capable of vibrating, this first system tries via the decoupling spring to press the sealing element against the sealing edge when the sealing element just wants to bounce back from the sealing edge.
  • the force acting on the sealing element which originates from the first vibratory system, is thus phase-shifted by approximately 180 ° against the force acting on the sealing element due to the bouncing process or the impact between the sealing element and the sealing edge.
  • the sealing member does not open periodically in an undesirable manner even with dynamic control in the vicinity of the sealing edge or on the sealing edge. This enables precise control of the idle air mass flow with the smallest values.
  • the decoupling spring is designed as a compression spring, which is compressed under the action of the return spring and the counter spring.
  • the return spring and the counter spring are thus used to establish the static connection via the decoupling spring.
  • the return spring and the counter spring are dimensioned as so-called working springs, while the decoupling spring is relatively hard to cause only slight path losses between the movement of the first vibratory system with the movable part of the drive element to the second vibratory system with the sealing element .
  • the masses of the first vibratory system and the second vibratory system are preferably dimensioned in relation to one another so that the on the seal organ recoil exerted by the sealing edge is not greater than the momentarily exciting force of the first vibratory system.
  • the first oscillatory system is also periodically excited in a manner known per se in order to achieve a mechanical hysteresis of the adjustment of the movable part of the first system and thus of the sealing element. to avoid if possible.
  • the core 1, the push rod 3 and the return spring 6 form a first oscillating spring / mass system.
  • This first vibratory system is connected via the decoupling spring 7 to a second vibratory system.
  • the second system capable of oscillation comprises a sealing element designed as a baffle plate 8, which is connected directly to a counter spring 9.
  • the baffle plate is slidably mounted at points 10 and 11. It is pressed in the idle state and when the coil is de-energized by the return spring 6 via the decoupling spring 7 against a cutting edge-shaped sealing edge 12 which delimits an idle air passage opening.
  • the return spring 6 and the counter spring 9 are designed as compression springs in order to compress the decoupling spring 7 in the static state.
  • the return spring 6 and the counter spring 9 are relatively soft compared to the decoupling spring 7.
  • the springs 6 and 9 can act as working springs, while the decoupling spring 7 causes only slight path losses.
  • the first vibratory system is excited by the coil 2.
  • the adjustment of the push rod 3, which forms part of this first vibratory system, is transferred via the decoupling spring 7 to the second vibratable system with the baffle plate 8 '.
  • the baffle plate abuts the sealing edge 12, it receives an imperfect elastic shock, so that it tends to undesirably expose the idle air passage opening. However, this is prevented by the particularly large force transmitted in this phase against the direction of the recoil by the first oscillating system via the decoupling spring 7.
  • the first vibratory system and the second vibratory system are so matched to one another that the baffle plate in the phase of touching the sealing edge receives a 180 ° phase-shifted impulse from the first vibratory system, which presses the baffle plate onto the sealing edge.
  • the masses of the first vibratable and the second vibratable system are to be coordinated so that the recoil on the baffle plate cannot be greater than the excitation force emanating from the first system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
EP84103881A 1983-07-15 1984-04-07 Dispositif pour commander la vitesse de ralenti d'un moteur à combustion interne Expired EP0131694B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3325548 1983-07-15
DE3325548A DE3325548A1 (de) 1983-07-15 1983-07-15 Einrichtung zur regelung der leerlaufdrehzahl eines verbrennungskraftstoffmotors

Publications (3)

Publication Number Publication Date
EP0131694A2 true EP0131694A2 (fr) 1985-01-23
EP0131694A3 EP0131694A3 (en) 1985-04-10
EP0131694B1 EP0131694B1 (fr) 1986-07-02

Family

ID=6204047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103881A Expired EP0131694B1 (fr) 1983-07-15 1984-04-07 Dispositif pour commander la vitesse de ralenti d'un moteur à combustion interne

Country Status (3)

Country Link
US (1) US4562809A (fr)
EP (1) EP0131694B1 (fr)
DE (2) DE3325548A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322850A1 (fr) * 1987-12-24 1989-07-05 WEBER S.r.l. Soupape électromagnétique de dosage d'air pour le dispositif d'alimentation en carburant d'un moteur à combustion interne
US5836521A (en) * 1995-03-09 1998-11-17 Dysekompagniet I/S Valve device with impact member and solenoid for atomizing a liquid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9394864B2 (en) 2014-06-11 2016-07-19 Ford Global Technologies, Llc Multi-frequency quarter-wave resonator for an internal combustion engine vehicle
US10302052B2 (en) 2016-11-16 2019-05-28 Ford Global Technologies, Llc Vacuum actuated multi-frequency quarter-wave resonator for an internal combustion engine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1697953A (en) * 1927-01-10 1929-01-08 Louis O French Electromagnetic valve
US1944113A (en) * 1932-04-02 1934-01-16 Frick Co Solenoid shut-off valve
US2783019A (en) * 1953-01-21 1957-02-26 Alco Valve Co Valve with non-chattering solenoid pilot valve control
US2797061A (en) * 1953-09-22 1957-06-25 J D Buchanan Solenoid operated shut-off valve
US2868494A (en) * 1954-08-26 1959-01-13 United Aircraft Corp Anti-vibrating solenoid valve
US2980139A (en) * 1956-10-10 1961-04-18 Westinghouse Electric Corp Two-way valve
US3384886A (en) * 1964-06-10 1968-05-21 Dual Lite Company Inc Alarm for emergency lighting system
US3996908A (en) * 1975-02-21 1976-12-14 General Motors Corporation Fuel shut-off valve assembly
SE7603251L (sv) * 1976-03-15 1977-09-16 Bjoerklund Curt Arnold Ventil, serskilt for inbyggnad i en oljeledning mellan en pump och ett brennarmunstycke
JPS6056897B2 (ja) * 1977-03-23 1985-12-12 トヨタ自動車株式会社 気化器スロットル弁閉弁制御装置
DE2731913A1 (de) * 1977-07-14 1979-02-01 Daimler Benz Ag Leerlaufeinstellvorrichtung fuer einspritzpumpen, insbesondere diesel-einspritzpumpen
US4242994A (en) * 1977-12-05 1981-01-06 The Bendix Corporation Idle speed control system for vehicle engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322850A1 (fr) * 1987-12-24 1989-07-05 WEBER S.r.l. Soupape électromagnétique de dosage d'air pour le dispositif d'alimentation en carburant d'un moteur à combustion interne
US4909475A (en) * 1987-12-24 1990-03-20 Weber S.R.L. Electromagnetic air control valve for an internal combustion engine fuel supply device
US5836521A (en) * 1995-03-09 1998-11-17 Dysekompagniet I/S Valve device with impact member and solenoid for atomizing a liquid

Also Published As

Publication number Publication date
EP0131694B1 (fr) 1986-07-02
DE3325548A1 (de) 1985-01-24
US4562809A (en) 1986-01-07
EP0131694A3 (en) 1985-04-10
DE3460262D1 (en) 1986-08-07

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