EP0753659A1 - Dispositif d'injection de combustible pour moteurs à combustion interne - Google Patents

Dispositif d'injection de combustible pour moteurs à combustion interne Download PDF

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Publication number
EP0753659A1
EP0753659A1 EP96305156A EP96305156A EP0753659A1 EP 0753659 A1 EP0753659 A1 EP 0753659A1 EP 96305156 A EP96305156 A EP 96305156A EP 96305156 A EP96305156 A EP 96305156A EP 0753659 A1 EP0753659 A1 EP 0753659A1
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EP
European Patent Office
Prior art keywords
fuel
control piston
balance chamber
injection device
fuel injection
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.)
Withdrawn
Application number
EP96305156A
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German (de)
English (en)
Inventor
Tsutomu Fuseya
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.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors Ltd
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 Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Publication of EP0753659A1 publication Critical patent/EP0753659A1/fr
Withdrawn legal-status Critical Current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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/008—Means for influencing the flow rate out of or into a control chamber, e.g. depending on the position of the needle

Definitions

  • the present invention relates to a fuel injection device used on internal combustion engines.
  • a fuel injection system electronic control fuel injection system
  • a common injection system common rail injection system
  • a pressure accumulation type injection system accumulator injection system
  • fuel injection devices themselves do not have a pressure accumulation chamber for temporarily storing fuel from the injection pump and therefore the supply of fuel to the fuel injection devices is done through a common rail, a common passage that works as a pressure accumulation chamber.
  • a balance chamber that controls the lift of a valve assembly is known to have a structure as shown in Figure 7.
  • the balance chamber 35 in the fuel injection device is formed in a hollow portion enclosed by a top portion of a bore 54 in a control sleeve 7 and a control piston 2 of the valve assembly.
  • a high-pressure fuel from a high pressure fuel source (represented by reference number 29 in Figure 1) such as a common rail is supplied to the balance chamber 35 through a supply passage, and the high-pressure fuel in the balance chamber 35 is discharged outside through an exhaust passage.
  • the supply passage comprises an annular chamber 18 formed around the control sleeve 7 and an orifice 24 formed in the control sleeve 7.
  • the exhaust passage comprises a fuel passage 26 and an orifice 25 both formed in the control sleeve 7 that provides the upper surface of the balance chamber 35.
  • a needle valve closes a nozzle
  • the orifice 25 is closed by a ball 27 and a solenoid valve 10.
  • the control piston 2 and the needle valve are lifted, the ball 27 and the solenoid valve 10 move up, opening the orifice 25.
  • an underside 74 of the control sleeve 7 is formed with a projecting portion 70
  • a top surface 75 of the control piston 2 is formed with a projecting portion 71.
  • the full lift of the control piston 2 is so set as to form a gap S between an endface 76 of the projecting portion 70 and an endface 77 of the projecting portion 71.
  • the balance chamber 35 is so constructed as to communicate with the orifice 24 and the fuel passage 26 at all times.
  • the conventional fuel injection device is disclosed, for example, in Japan Patent Publication No. 81935/1994.
  • the fuel injection device has a piston slidably installed in an inner bore of a cylindrical component.
  • the inner bore has a control chamber therein.
  • Fuel is supplied to the control chamber through a flow passage and an orifice formed in the piston.
  • Fuel in the control chamber is discharged through an orifice formed in the cylindrical component.
  • the full lift of the piston (a needle valve's vertical stroke) is so set as to form a gap between the top end surface of the piston and the wall surface of the control chamber.
  • Japan Patent Laid-Open No. 118261/1993 An example of the electromagnetic type fuel injection device for internal combustion engines is disclosed in Japan Patent Laid-Open No. 118261/1993.
  • a control valve is installed in a hollow body of the injection device by a liquid-tight coupling means.
  • the liquid-tight coupling means has a pair of precision-ground surfaces and a sealing ring compressed, adjacent to the precision-ground surfaces, between the hollow body and the valve assembly.
  • Formed in the hollow body are a cylindrical axial space and a control chamber, with a sliding rod controlled by a pressure in the control chamber and the cylindrical axial space.
  • Supply of fuel to the control chamber and the cylindrical space is through an input conduit, an annular chamber, and a conduit formed in the hollow body.
  • the full lift of the control piston 2 is set at such a position that a gap S is formed between the endface 76 of the projecting portion 70 and the endface 77 of the projecting portion 71. Because the full lift position of the control piston 2 is not set at a position that brings the endfaces 76, 77 of the projecting portions 70, 71 into contact with each other, the position setting of the control piston is performed by using a separate stopper (not shown). Further, because the passage cross section of the orifice 24 is set smaller than that of the orifice 25, the fuel pressure fluctuates in the balance chamber 35 when the ball 27 opens the orifice 25. Fluctuation of the fuel pressure that controls the lift of the control piston 2 makes the amount of lift of the control piston 2 unstable.
  • the present invention applies to fuel injection devices of a type that supplies fuel through a common rail, a common passage that works as a pressure accumulation chamber.
  • the invention relates to a fuel injection device, in which a valve assembly that reciprocates in the main body comprises a control piston receiving the fuel pressure and a needle valve that opens and closes nozzle holes; in which the lift of the control piston is controlled by the pressure of the fuel in a balance chamber formed by a bore in a control sleeve; in which the full lift position of the control piston can be set where the upper end surface of the control piston and the wall surface of the control sleeve contact each other so that there is no need to provide a separate stopper for the valve assembly; and in which a slit is formed in at least one of the control piston and the control sleeve to allow the balance chamber and the exhaust passage to communicate with each other.
  • This invention also relates to a fuel injection device for internal combustion engines, which comprises: a valve assembly that reciprocates in use in the main body having nozzle holes for injecting fuel and which opens the nozzle holes by fuel pressure; a fuel chamber for storing fuel formed around the valve assembly extending through the main body; a balance chamber formed in a control sleeve secured to the main body for controlling the lift of the valve assembly by the fuel pressure; and an actuator for driving an open-close valve that opens and closes an exhaust passage for the fuel pressure in the balance chamber; wherein the valve assembly comprises a control piston having one end thereof exposed in the balance chamber and a needle valve integrally formed with the control piston and adapted to open and close the nozzle holes; wherein the exhaust passage and the balance chamber communicate with each other through a slit formed in a projecting portion, the projecting portion being provided to the control piston or the control sleeve and projecting into the balance chamber.
  • the projecting portion contacts the upper end surface of the control piston or the wall surface of the balance chamber.
  • control piston and the control sleeve can each be provided with a projecting portion, and the end surfaces of these projecting portions contact each other when the control piston reaches the full lift.
  • the slit is formed in the projecting portion provided to the control sleeve and/or to the projecting portion provided to the control piston.
  • the slit functions as a passage for permitting communication between the balance chamber and the exhaust passage at all times and the projecting portion works as a stopper that restricts the full lift of the valve assembly, making it extremely easy to set the full lift position of the valve assembly, which comprises the control piston and the needle valve, and obviating the need to provide a stopper to restrict the full lift of the valve assembly.
  • the front end of the control piston can be prevented from becoming unstable due to pulsation or oscillation of the fuel pressure, thus ensuring smooth sliding motion of the valve assembly.
  • the balance chamber and the exhaust passage communicate with each other through the slit at all times; it is possible to set the full lift position of the valve assembly where the control piston and the control sleeve contact each other so that there is no need to provide a separate stopper to stop the valve assembly at the full lift position; and the lift of the control piston can be prevented from becoming unstable due to pulsation of the fuel pressure. That is, this fuel injection device can easily set the full lift position of the valve assembly and the control piston can be stably lifted without being affected by pulsations of the fuel pressure in the balance chamber.
  • the slit to allow communication between the balance chamber and the exhaust passage may be formed in the projecting portion provided to the control piston or in the projecting portion provided to the control sleeve, or both.
  • This fuel injection device is applied to a common rail injection system and an accumulator injection system, which, though not shown, inject into each of combustion chambers of an internal combustion engine a high-pressure fuel that was supplied from an injection pump through a common passage or pressure accumulation chamber (hereinafter referred to as a common rail 29).
  • a holder body 1 in this fuel injection device is sealingly installed in a hole (not shown) provided in a base such as a cylinder head through a sealing member 42.
  • the lower end portion of the holder body 1 is securely fitted with a nozzle body 4 by screwing a sleeve nut 40 over a threaded portion of the holder body 1.
  • the lower end surface of the holder body 1 and the upper end surface of the nozzle body 4 form interface surfaces 22 that constitute sealing surfaces.
  • the outer circumferential surface of the nozzle body 4 is formed large in diameter at the upper part and small at the lower part.
  • the sleeve nut 40 engages with a stepped surface 55 formed at the lower part of the nozzle body 4 and is screwed over the threaded portion of the holder body 1.
  • the upper part of the holder body 1 has a plug mounting hole 45 for mounting a threaded fuel inlet plug 5, which is screwed into the plug mounting hole 45.
  • the upper end portion of the holder body 1 is securely fitted with a solenoid type valve actuation mechanism 65, which reciprocates the valve assembly, by screwing the sleeve nut 46 over the threaded portion of the holder body 1. Sealing between the sleeve nut 46 and the solenoid type valve actuation mechanism 65 as well as the holder body 1 is provided by sealing members 31, 32.
  • a fuel from the common rail 29 is supplied into the fuel injection device through the fuel inlet plug 5.
  • the solenoid type valve actuation mechanism 65 constitutes an actuator (coil 14, solenoid 11, solenoid valve 10 and ball 27 all described later) that discharges a fuel pressure applied to the valve assembly through a fuel pressure exhaust passage (fuel passage 26, orifice 25, hollow chamber 63 and fuel return pipe 12 all described later).
  • the fuel inlet plug 5 is screwed into the plug mounting hole 45 in the holder body 1. Sealing between the holder body 1 and the fuel inlet plug 5 is achieved by a seal member 30.
  • the holder body 1 is formed with a center through-hole 47 through which a valve assembly is passed and also with a supply hole 6 that allows communication between the center through-hole 47 and a fuel inlet 49 of the fuel inlet plug 5.
  • a diameter-constricted guide portion 66 which has a guide surface 36 and through which a control piston 2 of the valve assembly is passed.
  • the center through-hole 47 of the holder body 1 forms a fuel chamber 37 for storing a fuel around the control piston 2 that passes through the center through-hole 47 of the holder body 1.
  • the nozzle body 4 has a center through-hole 48 that communicates with the center through-hole 47 and through which a needle valve 3 of the valve assembly is passed.
  • the nozzle body 4 is also formed with nozzle holes 50 to inject fuel into the combustion chamber (not shown).
  • the valve assembly has the control piston 2 and the needle valve 3 connected together by a coupling means 38.
  • the control piston 2 and the needle valve 3 abut against each other at their engagement surfaces 57 and are axially held together by the coupling means 38 that has a spring force to allow axis deviation between them in a direction perpendicular to the axial direction.
  • the control piston 2 has an annular groove 58 formed at the lower end portion thereof and the needle valve 3 is formed with an annular groove 58 at the upper end portion thereof.
  • the coupling means 38 has inwardly projecting beads 59 at both ends that form locking portions.
  • the coupling means 38 is fitted over the facing end portions of the needle valve 3 and the control piston 2, with the beads 59 of the coupling means 38 fitted in the annular groove 58 of the control piston 2 and the annular groove 58 of the needle valve 3.
  • a fuel chamber 56 communicating with the fuel chamber 37 is formed.
  • the needle valve 3 is slidably inserted in the center through-hole 48 of the nozzle body 4 with a gap 52 formed therebetween and with the face of its front end portion 41 seated on a seat surface of the nozzle body 4 that is formed near the nozzle holes 50.
  • the gap 52 formed around the needle valve 3 constitutes a passage for a high-pressure fuel.
  • a sliding surface 21 having the gap 52.
  • a control sleeve 7 is fitted in the center through-hole 47 of the holder body 1 and forms an engagement surface 19 that serves as a seal.
  • a shoulder portion of the control sleeve 7 engages with an upper stepped portion of the center through-hole 47 to form an abutment sealing surface 23.
  • An annular chamber 18 is formed between the outer circumferential surface of the control sleeve 7 and the center through-hole 47 of the holder body 1.
  • the control sleeve 7 is held immovable by a fixing plug 8 having a hole 44 therein which is screwed into the threaded part of the upper end portion of the holder body 1.
  • a complete sealing between the holder body 1 and the control sleeve 7 is achieved by a sealing member 33.
  • the annular chamber 18 communicates with the fuel inlet 49 through a supply hole 17 of the supply passage formed in the holder body 1.
  • a bore 54 in the control sleeve 7 opening downwardly is formed with a sliding surface 20 in which the control piston 2 is slidably fitted, and at the top of the bore 54 there is formed a balance chamber 35 between the bore top and the upper surface of the control piston 2.
  • the balance chamber 35 communicates with the annular chamber 18 through an orifice 24.
  • the control sleeve 7 is formed with the orifice 24 connecting the balance chamber 35 and the supply hole 17, an orifice 25 communicating with the upper surface of the control sleeve 7, and a fuel passage 26.
  • the balance chamber 35 has a function of controlling the lift of the control piston 2 by a fuel pressure in the fuel chamber 37 formed in the holder body 1 that stores the fuel and through which the control piston 2 is passed.
  • This fuel injection device has a projecting portion 71 formed on the top surface 75 of the control piston 2 and a projecting portion 70 formed on the wall surface (underside) 74 of the control sleeve 7 that has the balance chamber 35. Further, the projecting portion 70 has a slit 72 opening to the balance chamber 35. The endface 77 of the projecting portion 71 of the control piston 2 and the endface 76 of the projecting portion 70 of the control sleeve 7 come into contact with each other when the valve assembly comprising the needle valve 3 and the control piston 2 reaches the full lift. Hence, the fuel passage 26 that constitutes an exhaust passage communicates at all times with the balance chamber 35 through the slit 72 formed in the projecting portion 70 of the control sleeve 7.
  • the fixing plug 8 for fixing the control sleeve 7 in the holder body 1 has an inside space or top chamber 63 therein, in which is a ball 27 installed to open and close the outlet of the orifice 25.
  • the ball 27 is secured to and integrally formed with the lower end of a solenoid valve 10 that is moved up and down by the energization of a solenoid 11.
  • the solenoid 11 is secured to the holder body 1 by the sleeve nut 46 through a solenoid support member 15.
  • a coil 14 is arranged around the outer circumferential surface of the solenoid 11.
  • a solenoid valve spring 9 which is set to the solenoid 11 by a set screw 64.
  • the coil 14 is supplied, through the terminal 16 and connector (harness) 13, with an electric current corresponding to a signal from the control unit 34.
  • the electricity to the coil 14 energizes the solenoid 11, which in turn pulls up the solenoid valve 10 against the force of the solenoid valve spring 9.
  • a fuel return pipe 12 extending from the sleeve nut 46.
  • the fuel return pipe 12 communicates with the top chamber 63 through a passage formed around the solenoid 11. Hence, when the ball 27 integral with the solenoid valve 10 opens the orifice 25, the fuel in the balance chamber 35 is discharged through the slit 72, fuel passage 26, orifice 25 and top chamber 63 and to the fuel return pipe 12.
  • the return action of the needle valve 3 to close the nozzle hole 50 is achieved by a return spring 28 disposed between a retainer 39 secured to the lower part of the control piston 2 and a retainer 53 engaged and fixed to a stepped portion 43 in the center through-hole 47 of the holder body 1.
  • the fuel injection device of this invention with the above construction operates as follows.
  • the solenoid type valve actuation mechanism 65 is not energized, and the solenoid valve 10 and the ball 27 are pushed down by the force of the solenoid valve spring 9, with the orifice 25 closed by the ball 27.
  • the high-pressure fuel from the common rail 29 is supplied to the fuel inlet 49 through the fuel inlet plug 5.
  • the fuel chamber 37 formed around the control piston 2 and the needle valve 3 is filled with the high-pressure fuel supplied from the fuel inlet 49 through the supply hole 6.
  • the gap 52 formed between the outer circumference of the needle valve 3 and the nozzle body 4 is filled with the high-pressure fuel.
  • the annular chamber 18 is supplied with the high-pressure fuel from the fuel inlet 49 through the supply hole 17, and the balance chamber 35 is filled with the high-pressure fuel from the annular chamber 18 through the orifice 24.
  • the high-pressure fuel in the fuel chamber 37 is sealed by the sealing members 30, 33.
  • the high-pressure fuel in the annular chamber 18 and the balance chamber 35 is isolated from the high-pressure fuel in the fuel chamber 37 by the sealing member 33 except that they communicate with each other through the orifice 24.
  • the high-pressure fuel in the balance chamber 35 that was supplied through the supply hole 17 and the orifice 24 acts on the upper surface of the control piston 2 as a downward force.
  • the force of the return spring 28 acts on the valve assembly to push it down.
  • the fuel pressure acting on the tapered surface of the front end portion of the needle valve 3, seated on the nozzle holes 50 of the nozzle body 4 to open and close the nozzle holes 50 works to raise the valve assembly.
  • the valve assembly comprising the control piston 2 and the needle valve 3 is so constructed that it is raised by the fuel pressure acting on it to open the nozzle holes 50.
  • the fuel pressure acting on the tapered surface of the front portion of the needle valve 3, which is seated or unseated to and from the nozzle holes 50 of the nozzle body 4 to close and open the nozzle holes 50 becomes greater than the sum of the spring force of the return spring 28 and the fuel pressure in the balance chamber 35 acting on the upper surface of the control piston 2, with the result that the valve assembly is moved upward. Further, the total downward force, i.e., the pressure acting on the control piston 2 in the balance chamber 35 and the force of the return spring 28, is set larger than the upward force acting on the needle valve 3, so that the needle valve 3 closes the nozzle holes 50.
  • the upward force acting on the tapered surface of the needle valve 3 overcomes the force of the return spring 28, causing the needle valve 3 that is axially secured to the control piston 2 to move up, opening the nozzle holes 50, through which the fuel begins to be injected into the combustion chamber (not shown).
  • the solenoid 11 is deenergized, allowing the solenoid valve 10 and the ball 27 to move down by the force of the solenoid valve spring 9, closing the orifice 25 with the ball 27.
  • the orifice 25 is closed, the high-pressure fuel from the common rail 29 is supplied through the fuel inlet 49, the supply hole 17 and the orifice 24 into the balance chamber 35 where it is accumulated, acting on the upper surface of the control piston 2 and pushing it down, with the result that the needle valve 3 closes the nozzle holes 50 ending the fuel injection from the nozzle holes 50.
  • the fuel injection device repeats the above-mentioned operation to inject fuel into the combustion chamber intermittently.
  • this embodiment is similar in construction and workings to the preceding embodiments, except that the control piston and the control sleeve are each formed with a slit. Components identical to those of the preceding embodiments are given like reference numerals and repetitive explanations are omitted. That is, this embodiment is characterized in that the projecting portion 71 of the control piston 2 is formed with a slit 73 that opens to the balance chamber 35 and that the projecting portion 70 of the control sleeve 7 is formed with a slit 72.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP96305156A 1995-07-14 1996-07-12 Dispositif d'injection de combustible pour moteurs à combustion interne Withdrawn EP0753659A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP20031395A JPH0932683A (ja) 1995-07-14 1995-07-14 内燃機関の燃料噴射装置
JP200313/95 1995-07-14

Publications (1)

Publication Number Publication Date
EP0753659A1 true EP0753659A1 (fr) 1997-01-15

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EP96305156A Withdrawn EP0753659A1 (fr) 1995-07-14 1996-07-12 Dispositif d'injection de combustible pour moteurs à combustion interne

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JP (1) JPH0932683A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999066192A1 (fr) * 1998-06-16 1999-12-23 Robert Bosch Gmbh Unite de commande pour soupape d'injection de carburant
WO1999066190A1 (fr) * 1998-06-16 1999-12-23 Robert Bosch Gmbh Unite de commande de soupape pour un injecteur de carburant
DE19847839A1 (de) * 1998-10-16 2000-04-20 Gen Motors Corp Kraftstoff-Einspritzvorrichtung
EP1136692A2 (fr) * 2000-03-21 2001-09-26 C.R.F. Società Consortile per Azioni Injecteur de carburant avec une aiguille de contrôle commandée par la pression du carburant dans une chambre de commande
DE10164394A1 (de) * 2001-12-28 2003-07-17 Bosch Gmbh Robert Kraftstoffeinspritzventil für eine Brennkraftmaschine
EP1574701A1 (fr) * 2004-03-05 2005-09-14 Robert Bosch Gmbh Injecteur de common rail
WO2014210148A1 (fr) * 2013-06-26 2014-12-31 Cummins Inc. Injecteur de carburant à éléments pour réduire le chauffage visqueux dans une soupape de commande et un circuit d'évacuation
CN104806399A (zh) * 2015-04-03 2015-07-29 西安交通大学 端面凸轮旋转伺服电机直驱的高压共轨喷油器控制阀
CN105065163A (zh) * 2015-07-21 2015-11-18 西安交通大学 旋转伺服电机与端面凸轮一体化的高压共轨喷油器
WO2016188577A1 (fr) * 2015-05-28 2016-12-01 Robert Bosch Gmbh Injecteur à rampe commune

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919432C2 (de) * 1999-04-29 2002-07-04 Bosch Gmbh Robert Common Rail Injektor
JP3557554B2 (ja) * 2001-07-16 2004-08-25 株式会社ボッシュオートモーティブシステム 燃料噴射弁におけるノズルニードルの制御構造
DE10234909A1 (de) * 2002-07-31 2004-02-19 Robert Bosch Gmbh Kraftstoffinjektor mit hochdruckfestem Anschlußbereich
JP2005105923A (ja) * 2003-09-30 2005-04-21 Bosch Automotive Systems Corp 燃料噴射弁

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH443787A (de) * 1965-09-14 1967-09-15 Sulzer Ag Einspritzvorrichtung einer Kolbenbrennkraftmaschine
US4471740A (en) * 1982-10-06 1984-09-18 Regie Nationale Des Usines Renault Premetered pump injector having constant injection pressure, and derivative system
EP0385399A2 (fr) * 1989-03-03 1990-09-05 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Injecteur électromagnétique de carburant pour moteur diesel
EP0426205A2 (fr) * 1985-12-02 1991-05-08 Marco Alfredo Ganser Dispositif de commande d'injecteurs de combustible actionnés électro-hydrauliquement
EP0548916A1 (fr) * 1991-12-24 1993-06-30 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Soupape électromagnétique d'injection de combustible

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH443787A (de) * 1965-09-14 1967-09-15 Sulzer Ag Einspritzvorrichtung einer Kolbenbrennkraftmaschine
US4471740A (en) * 1982-10-06 1984-09-18 Regie Nationale Des Usines Renault Premetered pump injector having constant injection pressure, and derivative system
EP0426205A2 (fr) * 1985-12-02 1991-05-08 Marco Alfredo Ganser Dispositif de commande d'injecteurs de combustible actionnés électro-hydrauliquement
EP0385399A2 (fr) * 1989-03-03 1990-09-05 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Injecteur électromagnétique de carburant pour moteur diesel
EP0548916A1 (fr) * 1991-12-24 1993-06-30 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Soupape électromagnétique d'injection de combustible

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999066192A1 (fr) * 1998-06-16 1999-12-23 Robert Bosch Gmbh Unite de commande pour soupape d'injection de carburant
WO1999066190A1 (fr) * 1998-06-16 1999-12-23 Robert Bosch Gmbh Unite de commande de soupape pour un injecteur de carburant
DE19847839A1 (de) * 1998-10-16 2000-04-20 Gen Motors Corp Kraftstoff-Einspritzvorrichtung
US6179220B1 (en) 1998-10-16 2001-01-30 Delphi Technologies, Inc. Fuel injection apparatus
US6575384B2 (en) 2000-03-21 2003-06-10 C.R.F. Societa Consortile Per Azioni Fuel injector with a control rod controlled by the fuel pressure in a control chamber
EP1136692A3 (fr) * 2000-03-21 2002-03-27 C.R.F. Società Consortile per Azioni Injecteur de carburant avec une aiguille de contrôle commandée par la pression du carburant dans une chambre de commande
EP1136692A2 (fr) * 2000-03-21 2001-09-26 C.R.F. Società Consortile per Azioni Injecteur de carburant avec une aiguille de contrôle commandée par la pression du carburant dans une chambre de commande
DE10164394A1 (de) * 2001-12-28 2003-07-17 Bosch Gmbh Robert Kraftstoffeinspritzventil für eine Brennkraftmaschine
EP1574701A1 (fr) * 2004-03-05 2005-09-14 Robert Bosch Gmbh Injecteur de common rail
WO2014210148A1 (fr) * 2013-06-26 2014-12-31 Cummins Inc. Injecteur de carburant à éléments pour réduire le chauffage visqueux dans une soupape de commande et un circuit d'évacuation
CN104806399A (zh) * 2015-04-03 2015-07-29 西安交通大学 端面凸轮旋转伺服电机直驱的高压共轨喷油器控制阀
CN104806399B (zh) * 2015-04-03 2017-06-06 西安交通大学 端面凸轮旋转伺服电机直驱的高压共轨喷油器控制阀
WO2016188577A1 (fr) * 2015-05-28 2016-12-01 Robert Bosch Gmbh Injecteur à rampe commune
CN105065163A (zh) * 2015-07-21 2015-11-18 西安交通大学 旋转伺服电机与端面凸轮一体化的高压共轨喷油器
CN105065163B (zh) * 2015-07-21 2017-06-20 西安交通大学 旋转伺服电机与端面凸轮一体化的高压共轨喷油器

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