EP0676543B1 - Zweistufen-Ventil für die Zuführung von Luft zu den Einspritzventilen einer Brennkraftmaschine - Google Patents

Zweistufen-Ventil für die Zuführung von Luft zu den Einspritzventilen einer Brennkraftmaschine Download PDF

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Publication number
EP0676543B1
EP0676543B1 EP95400735A EP95400735A EP0676543B1 EP 0676543 B1 EP0676543 B1 EP 0676543B1 EP 95400735 A EP95400735 A EP 95400735A EP 95400735 A EP95400735 A EP 95400735A EP 0676543 B1 EP0676543 B1 EP 0676543B1
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EP
European Patent Office
Prior art keywords
piston
air
actuator
valve according
valve
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Expired - Lifetime
Application number
EP95400735A
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English (en)
French (fr)
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EP0676543A1 (de
Inventor
Pierre Semence
Jean-Pierre Joigneau
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Marelli France SAS
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Magneti Marelli France SAS
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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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/30—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines
    • F02M69/32—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines with an air by-pass around the air throttle valve or with an auxiliary air passage, e.g. with a variably controlled valve therein
    • 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/08—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by the fuel being carried by compressed air into main stream of combustion-air

Definitions

  • the invention relates to a two-stage valve for the air supply, on the one hand, of at least one injector air assisted for fuel injection into a intake manifold of a feed installation injection of an internal combustion engine, and, on the other hand, bypass on a throttle, such as a butterfly, movable in a conduit to regulate the feeding in air from the intake manifold.
  • a throttle such as a butterfly
  • At least one injector delivers fuel to the branch inlet manifold, directly in upstream of the corresponding intake valve (s), in the cylinder head of the engine.
  • the air supply to the intake manifold, and therefore of the engine is ensured and regulated by a throttle body, disposed between the air and the intake manifold, and traversed by at least one conduit in which a throttle member is rotatably mounted disc-shaped, called a butterfly, whose position in the duct varies between a full position opening and closing position more or less complete duct, depending on pedal position accelerator, as well as possibly some engine operating parameters.
  • EP-A-0 357 498 injectors with at least one passage in the nose fuel outlet, defining a mixing chamber connected to a supply of assistance air.
  • EP-A-0 409 170 the additional air flow, delivered to each air-assisted injector be taken in upstream of the butterfly and controlled by a solenoid valve three-way idle, also serving as regulator idle.
  • a two-stage valve comprising a body in which a mobile equipment comprises first and second pistons, each of which is recalled by elastic means towards a waterproof application position or with minimal leakage against respectively a first and a second seat, for reduce at least the communication between at least an inlet of the body, supplied with air from upstream of the throttling organ, and one respectively of two exits from the body, a first of which feeds the air-assisted injectors, the second of which supplies the tubing downstream of the throttle, the crew mobile being movable by an actuator against elastic return means, for gradually putting each output in communication with the corresponding input, by moving the corresponding piston away from its corresponding seat.
  • the object of the invention is to remedy this drawback, and to propose a two-stage valve, of the type above, which better meets the requirements of the practice than known valves of this type.
  • the invention proposes a two-way valve stages which is characterized in that the first piston only is linked to the actuator and is integral in movement of first stop means which, beyond a first stroke of the first piston, from its position applied against the first seat, cooperate with second stop means, integral in movement with the second piston, to train it with the first piston on a second stroke, from the position of the second piston applied against the second seat.
  • the drive second piston by the first, on the second commanded stroke by the actuator ensures the required air flow.
  • the actuator regulates the air flow by the first exit to the assisted injector (s) by air, by regulating the position of the first piston on the first stroke, the air flow through the second outlet being kept low or zero, allowing regulation of the idle speed thanks to the air flow passing through the injector air assistance circuit under normal conditions idle.
  • the actuator regulates the air flow through the second outlet, downstream of the organ throttle or butterfly, regulating the position of the second piston on the second stroke, so, for example, to adapt this bypass air flow on the butterfly to a high speed deceleration strategy, or regulate this additional air flow depending on the temperature of the engine, during a cold start.
  • the input sections of the two circuits are sized to ensure that the air flow through the first output remains maximum when the pistons are moved to the second race.
  • the actuator has a straight stroke and axially displaces an axis integral with the first piston, the second piston being annular, mounted to slide axially in the body and arranged substantially around the assembly constituted by the axis and the first piston, the assembly bearing the first stop means cooperating with the second stop means integral with the second piston.
  • Each piston can be moved into one respectively two axial chambers of the body, in each from which opens, for example radially, the outlet corresponding, and the corresponding seat is arranged, annular and axial, the axis crossing a bottom separating the two chambers in the extension of one another, and the axis carrying the stop means driving the second piston.
  • the first seat is delimited around the central passage of the second (annular) piston, side opposite the face of the latter coming into contact against the second seat, which surrounds a single air inlet in the body.
  • the second piston may have a tubular skirt, axially guided in a single axial chamber of the body, and in which the first piston is moved axially on at least part of the first race, the second stop means comprising at least one hook carried by the skirt and projecting towards the inside of the latter, and the first stop means comprising at least one lug in laterally projecting from the first piston and cooperating with or the hooks of the skirt, to train the second piston on the second stroke.
  • This two-stage valve construction with a single axial chamber in which the two are housed pistons, one of which is annular, facilitates the realization of the valve body, which may be at least partially, and of preferably completely, in one piece with the body in which is formed the conduit housing the throttling member mobile, and the single air inlet of the valve body can lead directly into the duct upstream of this organ strangulation.
  • valve body can be closed, on the side opposite its single air intake, by a bottom crossed by the axis and supporting the actuator, and against which the elastic means of booster, advantageously comprising two helical springs, a first of which surrounds the axis and repels the first piston, and the second of which surrounds the first spring and pushes back the second piston.
  • the elastic means of booster advantageously comprising two helical springs, a first of which surrounds the axis and repels the first piston, and the second of which surrounds the first spring and pushes back the second piston.
  • the rectilinear actuator is advantageously a motor electric step by step.
  • a body throttle attached to an intake manifold 2, and crossed by a conduit 3, the inlet 4 of which is connected, by means not shown, at the outlet of an air filter, and whose outlet 5 opens into the tubing 2.
  • the conduit 3 presents a zone 6 with an evolving section, in the form of portion of sphere delimited on one side by a lip 7 in protrusion from the middle part of the body 1 towards the inside of the conduit 3 and towards entry 4, that is to say upstream.
  • a butterfly 8, forming a throttling member of the conduit 3 to the tubing 2, and in the form of a circular disc, is mounted on a diametrical axis 9 driven in rotation, by means not shown but classic, in part 6 of form evolution of the duct 3.
  • the body 1 On one of its sides, the body 1 has a appendix 10, forming a valve body, in which is formed a cylindrical chamber 11, of axis A-A radial by relation to the axis B-B of the conduit 3.
  • the chamber 11 communicates with this conduit 3 by a single axial inlet 12 (according to A-A), opening upstream of the base of the lip 7, and therefore in upstream of the butterfly 8, the circular section of the inlet 12 being less than the section of chamber 11.
  • Entrance 12 is thus formed in a wall 13, separating the conduit 3 of chamber 11, and the side facing inward of the chamber 11 is arranged in an annular seat 14 and tapered, for a piston 15, itself annular and facing substantially frustoconical bearing against the seat 14.
  • This piston 15 has a central passage 16, opposite entrance 12, and extends, on the side opposite this entrance 12, by a cylindrical skirt 17 having a range 18 by which the piston 15 is slidably mounted along the axis A-A and guided axially in chamber 11.
  • the skirt 17 extends axially by at least one pair of hooks 19, diametrically opposite, each with a projecting tooth radial with respect to the axis A-A and towards the interior of the skirt 17.
  • the piston 15 is resiliently pushed axially (according to A-A) so that its frustoconical external face is applied against the frustoconical seat 14 by a spring helical 20 resting, on the one hand, against the bearing surface 18, between the hooks 19 and the wall of the chamber 11, and, on the other hand, against a bottom 21 closing with a leak minimal, thanks to the seal 22, the chamber 11 on the side opposite to input 12, and supporting an actuator 23 with stroke straight formed by an electric stepper motor axially moving an axis 24, which crosses the bottom 21, and whose end inside chamber 11 carries another piston 25.
  • the piston 25 is not annular, but has also a head 26 with a substantially frustoconical external face, by which it bears against another seat 27 annular and frustoconical, delimited on the internal face of the piston 15 around its central passage 16, under the thrust elastic return of another helical spring of compression 28 also bearing, on one side, against the bottom 21, and on the other, against the piston 25, between the axis 24 that this spring 28 surrounds, and an axial and tubular skirt 29 carried by the piston 25, to guide the spring 28 and prevent any interference of the latter's turns with the hooks 19 of the piston 15.
  • the piston 25 also carries, projecting radially outwards, lugs 30, forming mechanical stop, and intended to cooperate with the hooks 19, also forming a mechanical drive stop, of the as described below.
  • two air outlet channels 31 and 32 are formed in the body 10 and open radially (by in relation to axis A-A) in chamber 11, the first, 31, between the bottom 21 and the pistons 15 and 25, and the second, 32, opposite the skirt 17 of the piston 15, between the bearing surface 18 and the seat 14 of the chamber 11.
  • This second outlet channel 32 is extended by a channel 33 formed in the pipe 2 and opening into the extension of the intake duct 3, downstream of the butterfly 8.
  • the two-stage valve thus produced is compact and balanced structure: it includes a unique chamber 11 with a single inlet 12, two pistons 15 and 25 one of which, 15, slides axially in the chamber 11, and the other, 25, is moved axially in the piston 15, by tubular structure, by movement of the maneuvered axis 24 by the actuator 23.
  • the return springs 20 and 28 are coaxial and recall pistons 15 and 25 in their initial position, which is that shown in the figure unique. In this initial position, under the effect of spring 28, the internal piston 25 closes the central passage 16 by pressing against the seat 27 of the piston 15, and the latter closes entrance 12 by application against seat 14 under the effect of spring 20.
  • the stepping motor 23 regulates the axial position of the piston 25 by moving its head 26 away from the seat 27 internal to the other piston 15, on a first stroke axial defined by the axial distance between the pins 30 of the piston 25 and the teeth projecting from the hooks 19 of the piston 15.
  • a first stroke axial defined by the axial distance between the pins 30 of the piston 25 and the teeth projecting from the hooks 19 of the piston 15.
  • We regulate the assistance air flow from the injectors which allows regulate the idling speed, under normal conditions engine temperature, up to a flow rate of around 20 kg / h when the piston 25 has run the entire first axial stroke.
  • This first race can be by example of 2 mm and obtained for 50 steps of motor rotation step by step 23.
  • the stepper motor 23 drives by the axis 24 the piston 25 on a second axial stroke, on which the pins 30 of the piston 25 are in mechanical abutment against the hooks 19 of the skirt 17 and thus cause the piston 15, which is moved away from seat 14, so that air goes through the opening 12 then between the seat 14 and the piston 15, and through the outlet duct 32, to lead into the channel 33 and the branch 2 in bypass on the butterfly 8, closed under these operating conditions.
  • the two-stage valve thus integrated into the body of butterfly 1, allows to regulate, between the first and the fiftieth step of motor 23, the flow passing through the outlet 31 to the air-assisted injectors, and, between the fifty-first and two hundredth steps, lets regulate the air flow through outlet 32, bypass on the butterfly 8, while the air flow through the outlet 31 to the air-assisted injectors is kept maximum.
  • the two-stage valve thus produced is simple and reliable, with little or no friction, as well as low risk of clogging of the air passages. She is also very easy to fly.

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  • 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)
  • Fuel-Injection Apparatus (AREA)

Claims (10)

  1. Zweistufen-Ventil für die Zuführung von Luft, einerseits zu zumindest einem luftunterstützten Einspritzventil zur Einspritzung von Kraftstoff in einen Ansaugkrümmer (2) einer Kraftstoffeinspritzeinrichtung für einen Verbrennungsmotor, und andererseits im Nebenschluß auf ein Drosselorgan (8), wie etwa eine bewegliche Drosselklappe in einem Kanal (3) zum Regeln der Luftzuführung zum Ansaugkrümmer (2), wobei das Ventil einen Körper (10) aufweist, in welchem ein bewegliches Organ einen ersten und einen zweiten Kolben (15, 25) aufweist, von denen jeder durch elastische Mittel (20, 28) in Richtung auf eine Anlageposition unter minimalem Durchlaß gegen jeweils einen ersten (14) und einen zweiten (27) von Sitzen rückgestellt ist, um die Verbindung zwischen zumindest einem Eingang (12) des Körpers (10), dem Luft von stromaufwärts vom Drosselorgan (8) zugeführt wird, und einem jeweiligen von zwei Ausgängen (31, 32) des Körpers auf ihren minimalen Wert zu reduzieren, von denen ein erster Ausgang (31) dem luftunterstützen Einspritzventil bzw. den luftunterstützten Einspritzventilen Luft zuführt, und von denen der zweite Ausgang (32) dem Ansaugkrümmer (2) stromab von dem Drosselorgan (8) Luft zuführt, wobei das bewegliche Organ durch ein Betätigungsglied (23) entgegen den elastischen Rückstellmitteln (20, 28) verschiebbar ist, um jeden Ausgang (31, 32) mit dem entsprechenden Eingang (12) unter Abheben des entsprechenden Kolbens (15, 25) von seinem entsprechenden Sitz (14, 27) in Verbindung zu bringen, wobei der erste Kolben (25) ausschließlich mit dem Betätigungsglied (23) verbunden und mit ersten Anschlagmitteln (30) gemeinsam beweglich ist, und zwar hinausgehend über einen ersten Bewegungskurs des ersten Kolbens (25) ausgehend von seiner gegen den ersten Sitz (27) angelegten Position unter Zusammenwirkung mit zweiten Anschlagmitteln (19), die gemeinsam mit dem zweiten Kolben (15) beweglich sind, um ihn zusammen mit dem ersten Kolben (25) auf einem zweiten Kurs mitzunehmen, und zwar ausgehend von der Position des zweiten Kolbens (15) der gegen den zweiten Sitz (14) angelegt ist.
  2. Ventil nach Anspruch 1, dadurch gekennzeichnet, daß das Betätigungsglied (23) den Luftdurchsatz durch den ersten Ausgang (31) in Richtung auf das luftunterstützte Einspritzventil bzw. die luftunterstützten Einspritzventile regelt, unter Regeln der Position des ersten Kolbens (25) auf dem ersten Kurs.
  3. Ventil nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Betätigungsglied (23) den Luftdurchsatz durch den zweiten Ausgang (32) in stromabwärtiger Richtung des Drosselorgans (8) regelt, und zwar unter Regelung der Position des zweiten Kolbens (15) auf dem zweiten Kurs.
  4. Ventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Luftdurchsatz durch den ersten Ausgang (31) in Richtung auf das luftunterstützte Einspritzventil bzw. die luftunterstützten Einspritzventile maximal bleibt, wenn die Kolben (15, 25) auf dem zweiten Kurs verschoben werden.
  5. Ventil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Betätigungsglied (23) sich auf einem geradlinigen Kurs befindet und eine mit dem ersten Kolben (25) gemeinsame Achse (24) axial (A-A) verschiebt, wobei der zweite Kolben (15) Ringform hat und axial gleitend in dem Körper (10) angebracht ist und im wesentlichen um die Einheit herum angeordnet ist, die durch die Achse (24) und den ersten Kolben (25) gebildet ist, wobei die Einheit die ersten Anschlagmittel (30) trägt, die mit den zweiten Anschlagmitteln (19) zusammenwirken, die sich mit dem zweiten Kolben (15) gemeinsam bewegen.
  6. Ventil nach Anspruch 5, dadurch gekennzeichnet, daß der erste Sitz (27) um einen zentralen Durchlaß (16) des zweiten Kolbens (15) abgegrenzt ist, und zwar ausgehend von der Seite, die der Stirnfläche von letzterem gegenüberliegt, die in Kontakt gegen den zweiten Sitz (14) gelangt, welcher einen einzigen Lufneinlaß (12) in dem Körper (10) umgibt.
  7. Ventil nach Anspruch 6, dadurch gekennzeichnet, daß der zweite Kolben (15) einen rohrförmigen Mantel (17) aufweist, der in einer einzigen axialen Kammer (11) des Körpers (10) axial (A-A) geführt (18) ist, und in welchem der erste Kolben (25) auf zumindest einem Teil seines ersten Kurses axial verschoben wird, wobei die zweiten Anschlagmittel zumindest einen Haken (19) aufweisen, der durcn den Mantel (17) getragen ist und in Richtung auf dessen Inneres vorspringt, wobei die ersten Anschlagmittel zumindest einen Vorsprung bzw. Zuhaltungshaken (30) aufweisen, der seitlich auf dem ersten Kolben (25) vorspringt und mit dem bzw. den Haken (19) des Mantels (17) zusammenwirkt.
  8. Ventil nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß sein Körper (10) zumindest teilweise mit dem Körper (1) gemeinsam gebildet ist, in welchem der Kanal (3) vorgesehen ist, der das Drosselorgan (8) aufnimmt, und der einzige Lufteinlaß (12) des Ventilkörpers (10) direkt in den Kanal (3) strcmauf von dem Drosselorgan (8) mündet.
  9. Ventil nach Anspruch 8, dadurch gekennzeichnet, daß der Ventilkörper (10) auf der seinem einzigen Lufteinlaß (12) gegenüberliegenden Seite durch einen Boden (21) geschlossen ist, welcher von der Achse (24) durchsetzt ist und das Betätigungsglied (23) trägt, und gegen welchen die elastischen Rückstellmittel anliegen, welche zwei Schraubenfedern (20, 28) aufweisen, von denen eine erste (28) die Achse (24) umgibt und den ersten Kolben (25) rückstellt, und von denen die zweite (20) die erste (28) umgibt und den zweiten Kolben (15) rückstellt.
  10. Ventil nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Betätigungsglied (23) einen elektrischen Schrittmotor aufweist.
EP95400735A 1994-04-06 1995-04-03 Zweistufen-Ventil für die Zuführung von Luft zu den Einspritzventilen einer Brennkraftmaschine Expired - Lifetime EP0676543B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9404018A FR2718490B1 (fr) 1994-04-06 1994-04-06 Vanne à deux étages pour l'alimentation en air d'injecteurs de moteur à combustion interne.
FR9404018 1994-04-06

Publications (2)

Publication Number Publication Date
EP0676543A1 EP0676543A1 (de) 1995-10-11
EP0676543B1 true EP0676543B1 (de) 1998-03-04

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EP95400735A Expired - Lifetime EP0676543B1 (de) 1994-04-06 1995-04-03 Zweistufen-Ventil für die Zuführung von Luft zu den Einspritzventilen einer Brennkraftmaschine

Country Status (7)

Country Link
US (1) US5497746A (de)
EP (1) EP0676543B1 (de)
JP (1) JPH0893605A (de)
BR (1) BR9501452A (de)
DE (1) DE69501671T2 (de)
ES (1) ES2113716T3 (de)
FR (1) FR2718490B1 (de)

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WO1997030285A1 (en) * 1996-02-14 1997-08-21 Philips Electronics N.V. Valve with combined valve members, and fuel-injection system provided with such a valve
JP3639205B2 (ja) * 2000-11-07 2005-04-20 株式会社日立製作所 内燃機関のアイドル回転数制御装置
JP3986850B2 (ja) * 2001-04-27 2007-10-03 株式会社ケーヒン エンジンの吸気量制御装置
CN1297736C (zh) * 2001-04-27 2007-01-31 株式会社京浜 发动机的吸气装置
KR20030030696A (ko) * 2001-10-12 2003-04-18 현대자동차주식회사 드로틀 바디의 흡기 소음 방지장치
TWI277691B (en) * 2004-03-31 2007-04-01 Keihin Corp Idle air control device of fuel injection device
JP4234121B2 (ja) * 2005-09-02 2009-03-04 株式会社ケーヒン エンジン用吸気装置
JP4191709B2 (ja) * 2005-09-06 2008-12-03 株式会社ケーヒン エンジン用吸気装置
JP4690990B2 (ja) * 2006-10-04 2011-06-01 株式会社ケーヒン 燃料噴射装置におけるエアバイパス装置
US8752519B2 (en) * 2009-12-15 2014-06-17 GM Global Technology Operations LLC Air assist start stop methods and systems
CN104847901A (zh) * 2014-11-28 2015-08-19 重庆斯凯力科技有限公司 可调式摩托车二次进气阀

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JPS57126535A (en) * 1981-01-30 1982-08-06 Nippon Carbureter Co Ltd Engine r.p.m. controlling unit
JPS5885338A (ja) * 1981-11-12 1983-05-21 Toyota Motor Corp 内燃機関のアイドル回転数制御装置
JPH01208676A (ja) * 1988-02-17 1989-08-22 Misawa Homes Co Ltd 流量制御弁
US5018495A (en) * 1988-08-17 1991-05-28 Colt Industries, Inc. Automatic idle speed circuitry
JP2705236B2 (ja) * 1988-10-27 1998-01-28 株式会社デンソー 三方電磁弁
US4989564A (en) * 1990-01-10 1991-02-05 Siemens-Bendix Automotive Electronics Limited Idle air bypass
JPH03275979A (ja) * 1990-03-26 1991-12-06 Aisan Ind Co Ltd 流量制御弁
US5095939A (en) * 1991-06-13 1992-03-17 Allied-Signal Inc. Redundant pressurizing valve
DE4231241A1 (de) * 1992-09-18 1994-03-24 Bosch Gmbh Robert Vorrichtung zur Regelung der Leerlaufdrehzahl einer Brennkraftmaschine

Also Published As

Publication number Publication date
BR9501452A (pt) 1995-11-07
DE69501671T2 (de) 1998-10-22
JPH0893605A (ja) 1996-04-09
ES2113716T3 (es) 1998-05-01
FR2718490A1 (fr) 1995-10-13
DE69501671D1 (de) 1998-04-09
US5497746A (en) 1996-03-12
FR2718490B1 (fr) 1996-07-05
EP0676543A1 (de) 1995-10-11

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