EP1049860B1 - Pompe d'injection de carburant - Google Patents

Pompe d'injection de carburant Download PDF

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Publication number
EP1049860B1
EP1049860B1 EP99964368A EP99964368A EP1049860B1 EP 1049860 B1 EP1049860 B1 EP 1049860B1 EP 99964368 A EP99964368 A EP 99964368A EP 99964368 A EP99964368 A EP 99964368A EP 1049860 B1 EP1049860 B1 EP 1049860B1
Authority
EP
European Patent Office
Prior art keywords
pressure
control
fuel injection
valve
injection pump
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 - Lifetime
Application number
EP99964368A
Other languages
German (de)
English (en)
Other versions
EP1049860A1 (fr
Inventor
Wolfgang Geiger
Walter Fuchs
Hubert Greif
Stephan Jonas
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1049860A1 publication Critical patent/EP1049860A1/fr
Application granted granted Critical
Publication of EP1049860B1 publication Critical patent/EP1049860B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/16—Adjustment of injection timing
    • F02D1/18—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/14—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons
    • F02M41/1405—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis
    • F02M41/1411—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis characterised by means for varying fuel delivery or injection timing
    • F02M41/1416—Devices specially adapted for angular adjustment of annular cam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/16—Adjustment of injection timing
    • F02D1/18—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse
    • F02D1/183—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/16—Adjustment of injection timing
    • F02D1/18—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse
    • F02D1/183—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse hydraulic
    • F02D2001/186—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse hydraulic using a pressure-actuated piston for adjustment of a stationary cam or roller support

Definitions

  • the invention is based on a fuel injection pump.
  • DE-OS 24 58 109 is a fuel injection pump known in which the control of the pressure in one of a syringe plunger in a cylinder enclosed pressure chamber through a 2/3-way valve.
  • This directional valve connects the pressure chamber with either one Pressure oil pump or with a discharge line.
  • the pressure oil introduced into the pressure chamber becomes the Spritzverstellkolben displaced against the force of the spring and according to the start of injection of the associated Fuel injection pump adjusted.
  • the Control so that the injection piston between a first, the discharge line opening and a second, the pressure line opening position by appropriate Actuation of the 2/3-way valve is adjusted.
  • a 2/4-way valve In a alternative embodiment are receiving pressure oil Cell chambers between a drive member and a provided fuel injection pump driven organ, their connection to an oil pump or to a Relief channel is controlled by a 2/4-way valve. It is in the one position of the 2/4-way valve the one of the pressure chambers fuel from the oil pump supplied and the other of the pressure chambers fuel over taken a relief line. When changed position of the 2/4-way valve is the supply and discharge of Fuel in the opposite sense. Also with this device are two different according to the known embodiment Positions of the drive member to the driven body adjustable. In contrast, it is necessary accordingly the default operating parameters and intermediate positions to set exactly and also to keep.
  • a fuel injection pump with a cam drive for at least one pump piston known.
  • This fuel injection pump has a Injection adjuster on with, the injection start adjustment serving, acting on the cam drive Injection adjuster.
  • the injection piston is through one, from an electrically controlled control valve controlled pressure against a restoring force adjustable. It is by the control valve one of the one Front side of the injection piston in a cylinder enclosed pressure chamber with either a pressure source high level or connectable to a relief room.
  • the Control valve has a valve member in one Valve cylinder sliding valve slide with a Taxation on. By the tax code is one in the Valve cylinder opening connecting line to the pressure chamber either with an opening into the valve cylinder, of the Pressure source coming from pressure line or with one of Valve cylinder laxative discharge line connected or locked.
  • US-A-4422428 is also a Fuel injection pump with a cam drive for at least one pump piston known.
  • One with the Fuel pump co-acting injection adjuster points one of the injection start adjustment serving on the Cam drive on the injection piston, the through one, from an electrically controlled control valve controlled pressure against a restoring force adjustable is.
  • the control valve is one of the one end face the Spritzverstellkolbens enclosed in a cylinder Pressure chamber either with a high-level pressure source or connectable to a relief room.
  • the control valve points also as a valve member one in a valve cylinder slidable valve spool with a control collar on. The control collar turns one into the valve cylinder opening connecting line to the pressure chamber either with a opening into the valve cylinder, from the pressure source originating pressure line or with one of the valve cylinder laxative discharge line connected or closed.
  • the spool in addition to the taxation covenant on, between the and the control collar an annular space in the valve cylinder enclosed with either the pressure line or with the relief line is constantly connected.
  • the Leadership League is formed as a second taxation through the one, opening into the valve cylinder second Connecting line leading to a second, from the other Front side of the injection adjusting piston in the cylinder enclosed pressure chamber leads, either with the in the Valve cylinder opening, coming from a pressure source Pressure line or with the laxative from the valve cylinder Relief line is connected or closed.
  • the Pressure chamber and the second pressure chamber complementary to each other connected to the pressure source or the discharge line or both connecting lines in a middle position the spool closed.
  • the Spritzverstellkolben in a neutral, through the appropriate control of the control valve before pre-set position. If operating parameters change, so can by supplying pressure medium in the one pressure chamber and by removal of pressure medium from the other pressure chamber a fast efficient adjustment of the injection adjusting piston be brought about.
  • the cam drive of a fuel injection pump has in known way a curved track, on the rollers expire, which are generated when rolling relative movement by the pump piston in a reciprocating Movement be offset.
  • this is a Nockin and a radial piston pump z.
  • a cam ring 1 as he hinted in Figure 1 is shown. This one is in a circular shape Recess 2 in the housing 3 of the fuel injection pump rotatably mounted. Pointing inwards, to the axis of circular recess 2, the cam ring 1 has a Cam track 4, mounted on the in a roller shoe 5 Run off rollers 6 and thereby through the cam 7 of the cam track caused radial movements on the pump piston 8, only one of which is shown here.
  • a Coupling part 11 For actuating the cam ring 1 in its circumferential direction or for setting a rotational position of the cam ring is a Coupling part 11 provided in the form of one piece with the Cam ring formed radially projecting pin, the through an opening 12 in the wall of the circular recess 2 in a housing 3 of the fuel injection pump arranged cylinder 14 projects and there with a in a Cylinder 14 longitudinally displaceable Spritzverstellkolben 15th is coupled.
  • the injection piston 15 has a first Front side 16 on, which together with the closed end the cylinder 14 includes a first pressure chamber 17 and has a second one on its opposite side Front side 18 on, which together with the closed end of the cylinder 14 there a second depressurized Pressure space 20 includes. Between the closed end the cylinder 14 and the second end face 18 is a Clamped compression spring 21, which the injection piston 15 loaded axially in the direction of a preferred position.
  • the coupling between the coupling part 11 and the injection adjusting piston 15 takes place via a radially oriented recess 22 in the injection adjusting piston 15 in the region of its middle lateral surface.
  • this recess is so deep that the pin 11 extends into the region of the longitudinal axis 23 of the injection piston and there has a line of contact 24 of its head-like end with the surrounding cylindrical portion of the recess 22.
  • Actuating forces which are transmitted from the pump piston 8 via the cams 7 in the circumferential direction on the cam ring and from this again in the longitudinal direction of the adjusting 15, thus attack axially on the injection piston 15 and it is thus prevented that the piston is subjected to tilting movements due to these forces is that would cause unilateral wear on the mantle contact surfaces with the cylinder 14.
  • the contact line can be substantially aligned with the Spritzverstellkolbenachse but they can also slightly z. B. 2 to 6 mm from this axis radially offset therefrom. This has the advantage that a small torque in the circumferential direction acts on the injection adjusting piston such that the recess 22 coaxially aligns with the pin 11 and thus a preferred position of the pump piston is automatically maintained, without additional guide means would be required.
  • the fuel supply pump of the fuel injection pump can be, which speed depending promoting fuel in promotes a suction chamber of the fuel injection pump, from the then the fuel to be injected into the Pump work chambers, there compacted and then for injection by the pump piston 8 to the injectors is applied.
  • the speed-dependent Pressure, the speed-dependent conveying pump can also cause speed-dependent control operations.
  • the pressure is more exact by further pressure valves controlled and is now also available as a control medium Spray start adjustment available.
  • the fuel pressure is via a control valve 26 to the first pressure chamber 17 via a connecting line 27.
  • the connecting line 27 opens to others End in a valve cylinder 28, in which a slidably Control slide 29 is arranged.
  • This one is wearing on one Shank 30 two frets, a first fret in the form of a Steuerbundes 32 and a second fraternity in the form of a suitssbundes 33.
  • the Steuerbund 32 is located at the end of the Shank 30 and is on its axial end by a Return spring 35 loaded, located on the closed End face of the valve cylinder 28 is supported and in a is relieved by a discharge line 36 space.
  • This embodiment has the advantage that by the opening degree the connecting line from the annular space 37 to the first Pressure chamber 17, the inflow velocity of hydraulic fluid can be influenced. Can be correspondingly fast at large Inlet cross section of Spritzverstellkolben be adjusted and it can be further by an exact feedback the injection start result with the electromagnetic Intervention on the control valve 29 via the proportional solenoid a desired position of the injection piston exactly to adjust. Effects in the intermediate area due to the conveying processes the pump piston 8 are closed by closing the connecting line 27 intercepted.
  • the injection start adjustment device is simple and easy to implement and has the advantage of a balanced balance of power on the injection adjusting piston while avoiding radial forces. It will have a long life of Spritzverstellkolbens achieved due to low friction forces.
  • a spool 129 is provided, which in principle is constructed similar to the control slide of Figure 1. Here, however, serve both frets as tax bundles. There is continue the adjacent to the compression spring 35 control collar 32nd and the previously serving as a leadership federation is now a Steuerbund 133. Again, the pressure medium feed takes place via the pressure line 38 in the middle of the lateral surface of the Valve cylinder 28 in the annular space 37, the at Pressurization the spool 8 balanced applied. The pressure-exposed surfaces of the two frets are the same size.
  • the first control circuit 32 While as in the embodiment according to Figure 1, the first control circuit 32, the first connection line 27 controls in the first pressure chamber 17, now controls the second control circuit 133 has a second connection line 127 in FIG the second pressure chamber 120, which is no longer basically relieved of pressure.
  • the tax codes 32 and 133 close the respective ones Junctions of the connecting lines 27 and 127 in the Valve cylinder 28.
  • the two pressure chambers 17 and 120 are thus hydraulically locked and the location of the Spritzverstellkolbens 15 is fixed. It can the Compression spring 121 only in the area of a preferred position Outgoing position of the injection piston effective be.
  • the spool 129 in turn z. B. by a proportional magnet operated, z. B. to the left against the force of Spring 35.
  • This is a connection between the annulus 37 and the first pressure chamber 17 made so that pressure fluid can get into the first pressure chamber 17.
  • the connection line becomes 127 opened to the discharge line 36, so that Pressure fluid from the second pressure chamber 120 escape can.
  • This creates a power imbalance on Variable piston of a pronounced dimensions, so that this moves very fast to the right, until through a correction of the position of the spool 29 a certain Position of the injection piston 15 is fixed.
  • This process is also controlled via a control loop, in which the Spritzbeginnverstellwinkel be queried and according to the deviation from a given one Now set the proportional solenoid the opening of the connecting lines 27, 127 actuated or for their closure is set.
  • the spool 129th moved to the right, so that pressure medium over the Flow connecting line 127 in the second pressure chamber 120 can and at the same time pressure medium from the first pressure chamber 17 via the connection line 27 to the discharge line 36 can escape. This in turn, until over a feedback of the spool 129 back to the Connecting lines 27, 127 brought locking position becomes.
  • the spool 29 can be or 129 also clocked adjust with a pulse train, the acts on the electromagnet and thus a quasi analogous Adjustment of his anchor generated, in turn, with the Control slide is coupled. It can be light Axial vibrations are generated, which ensure that the Control valve is constantly in motion and hysteresis Due to frictional forces is largely avoided.
  • the compression spring 121 can be achieved that at lack of pressure medium z. B. at the start of the internal combustion engine, that from the fuel injection pump with fuel supplied and powered by the fuel injection pump will be set, a preferential position can. At the start of the pressure chambers 17 and 120 as shown in FIG 2 hydraulically locked. The compression spring 121 can still Move the injection piston 15 in a preferred position, due to a leakage flow along the lateral surface of the Injection adjuster.
  • Embodiment of the invention which allows the Hydraulic locking of pressure chambers via the control valve are only the smallest amounts of hydraulic fluid or Pressure fluid, in the given case fuel, necessary to set the desired setting To achieve Spritzbeginnverstellkolbens.
  • This will be the Working capacity of the injection start adjuster already at low speeds guaranteed at a very low overall Tax expense and with high life expectancy because of avoided radial loads of Spritzverstellkolbens.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Claims (9)

  1. Pompe d'injection de carburant comportant un entraínement par came (1, 4, 6, 7) d'au moins un piston de pompe (8) et un piston de réglage d'injection (15) servant à régler le début de l'injection et agissant sur l'entraínement par came, ce piston de réglage étant déplacé contre une force de rappel (21) par la pression commandée par une soupape de commande (26, 126) à commande électrique, dans laquelle
    la soupape de commande (26, 126) reliant une chambre de pression (17) délimitée par une face frontale (16) du piston de réglage d'injection (15) dans un cylindre (14) soit avec une source de pression (38) de niveau élevé, soit avec une chambre de décharge (36), et
    la soupape de commande (26, 126) comporte comme organe de soupape, un tiroir de commande (29, 129) coulissant dans un cylindre d'injecteur (28), et muni d'une collerette de commande (32, 133) qui relie ou ferme une conduite de liaison (27, 127) débouchant dans le cylindre d'injecteur (28) vers la chambre de pression (17, 120), soit avec une conduite de pression (38) débouchant dans le cylindre d'injecteur (28) à partir d'une source de pression, soit avec une conduite de décharge (36) partant du cylindre d'injecteur (28),
    caractérisée en ce que
    le tiroir de commande (29, 129) comporte en plus de la collerette de commande (32), une collerette de gùidage (33) délimitant un volume annulaire (37) dans le cylindre d'injecteur (28) entre cette collerette de guidage et la collerette de commande (32), ce volume annulaire étant relié en permanence soit à la conduite de pression (38) soit à la conduite de décharge (36), et la collerette de guidage est réalisée sous forme d'une seconde collerette de commande (133) à travers laquelle une seconde conduite de liaison (127), débouchant dans la chambre de cylindre (28) et aboutissant à une seconde chambre de pression (120) délimitée par l'autre face frontale (18) du piston de réglage d'injection (15) dans le cylindre (14), est reliée ou est coupée de la conduite de pression (38) débouchant dans le cylindre d'injecteur (28) venant d'une source de pression soit d'une conduite de décharge (36) partant du cylindre d'injecteur (28), et
    la collerette de commande (32) et la seconde collerette de commande (133) relient de manière complémentaire la chambre de pression (17) et la seconde chambre de pression (130) à la source de pression (38) ou à la conduite de décharge (36), ou coupent les deux conduites de liaison (27, 127) lorsque le tiroir de commande (129) occupe une position médiane.
  2. Pompe d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    le tiroir de commande (29, 129) est réglé par un électroaimant contre la force développée par un ressort de rappel (35).
  3. Pompe d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    l'électroaimant déplace le tiroir de commande contre la force du ressort de rappel en fonction d'une valeur de commande.
  4. Pompe d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    l'électroaimant déplace de manière cadencée le tiroir de commande contre la force du ressort de rappel (35) en fonction d'une valeur de commande.
  5. Pompe d'injection de carburant selon l'une des revendications 1 à 4,
    caractérisée en ce que
    l'électroaimant est actionné par une installation de régulation détectant un paramètre de réglage d'injection avec un élément de retour de signal pour la position de réglage d'injection de l'entraínement par came.
  6. Pompe d'injection de carburant selon l'une des revendications 1 à 5,
    caractérisée en ce que
    la force de rappel est réalisée par un ressort de rappel (21, 121).
  7. Pompe d'injection de carburant selon l'une des revendications 1 à 6,
    caractérisée en ce que
    le volume annulaire (37) est relié en permanence à la source de pression (38).
  8. Pompe d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    le piston de réglage d'injection (15) comporte dans sa surface-enveloppe une cavité (22) dans laquelle pénètre un organe de couplage (11) relié à l'entraínement par came, et ainsi le réglage du piston de réglage d'injection (15) sur la surface de contact (24) transmise à l'entraínement par came (1), se situe sur le piston de réglage d'injection (25) essentiellement au niveau de l'axe du piston de réglage (23).
  9. Pompe d'injection de carburant selon la revendication 8,
    caractérisée en ce que
    la surface de contact (24) est décalée de l'axe (23) du piston de réglage d'injection de 2 à 6 mm.
EP99964368A 1998-11-27 1999-11-24 Pompe d'injection de carburant Expired - Lifetime EP1049860B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19854766A DE19854766A1 (de) 1998-11-27 1998-11-27 Kraftstoffeinspritzpumpe
DE19854766 1998-11-27
PCT/DE1999/003722 WO2000032919A1 (fr) 1998-11-27 1999-11-24 Pompe d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1049860A1 EP1049860A1 (fr) 2000-11-08
EP1049860B1 true EP1049860B1 (fr) 2005-04-27

Family

ID=7889221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99964368A Expired - Lifetime EP1049860B1 (fr) 1998-11-27 1999-11-24 Pompe d'injection de carburant

Country Status (7)

Country Link
US (1) US6413054B1 (fr)
EP (1) EP1049860B1 (fr)
JP (1) JP2002531747A (fr)
KR (1) KR20010034375A (fr)
DE (2) DE19854766A1 (fr)
PL (1) PL341910A1 (fr)
WO (1) WO2000032919A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007002031A1 (de) * 2007-01-13 2008-07-17 Audi Ag Pumpe mit einem Verstellelement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1350930B2 (fr) * 2002-04-03 2016-01-27 SLW Automotive Inc. Pompe à déplacement variable et dispositif de contrôle
US7726948B2 (en) * 2002-04-03 2010-06-01 Slw Automotive Inc. Hydraulic pump with variable flow and variable pressure and electric control
WO2007087704A1 (fr) 2006-01-31 2007-08-09 Magna Powertrain Inc. Systeme de pompe a palettes a cylindree variable et a pression variable
DE102007033146B4 (de) * 2007-07-13 2012-02-02 Schwäbische Hüttenwerke Automotive GmbH & Co. KG Verstellventil für die Verstellung des Fördervolumens einer Verdrängerpumpe

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US2680412A (en) * 1950-08-08 1954-06-08 John E Entwistle Variable volume variable pressure pump
JPS5339939B2 (fr) 1973-12-10 1978-10-24
DE2839014A1 (de) * 1978-09-07 1980-03-20 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
JPS58143133A (ja) * 1982-02-22 1983-08-25 Mitsuwa Seiki Co Ltd 燃料噴射時期制御装置
GB8619994D0 (en) * 1986-08-16 1986-09-24 Lucas Ind Plc Fuel injection pump
JPH03188427A (ja) * 1989-12-19 1991-08-16 Zexel Corp 分配型燃料噴射ポンプの噴射時期制御装置
US5059096A (en) * 1990-12-26 1991-10-22 Lucas Industries Public Limited Company Fuel pumping apparatus
JP3215962B2 (ja) * 1993-12-09 2001-10-09 株式会社ボッシュオートモーティブシステム 電子式燃料噴射装置の噴射時期調整装置
DE4419992A1 (de) * 1994-06-08 1995-12-14 Bosch Gmbh Robert Kraftstoffeinspritzpumpe für Brennkraftmaschinen
EP0690220A1 (fr) * 1994-06-29 1996-01-03 Lucas Industries Public Limited Company Pompe à refoulement variable
GB9414308D0 (en) * 1994-07-15 1994-09-07 Lucas Ind Plc Advance mechanism
GB2296111A (en) * 1994-12-16 1996-06-19 Rover Group Timing of fuel delivery in a distributor-type fuel injection pump
DE19706821A1 (de) * 1997-02-21 1998-08-27 Bosch Gmbh Robert Verfahren und Vorrichtung zur Regelung eines Stellelements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007002031A1 (de) * 2007-01-13 2008-07-17 Audi Ag Pumpe mit einem Verstellelement
DE102007002031B4 (de) * 2007-01-13 2013-12-24 Audi Ag Pumpe mit einem Verstellelement

Also Published As

Publication number Publication date
KR20010034375A (ko) 2001-04-25
US6413054B1 (en) 2002-07-02
PL341910A1 (en) 2001-05-07
JP2002531747A (ja) 2002-09-24
WO2000032919A1 (fr) 2000-06-08
EP1049860A1 (fr) 2000-11-08
DE59911983D1 (de) 2005-06-02
DE19854766A1 (de) 2000-05-31

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