EP0770776B1 - Servoventil für eine Einspritzdüse - Google Patents
Servoventil für eine Einspritzdüse Download PDFInfo
- Publication number
- EP0770776B1 EP0770776B1 EP96116113A EP96116113A EP0770776B1 EP 0770776 B1 EP0770776 B1 EP 0770776B1 EP 96116113 A EP96116113 A EP 96116113A EP 96116113 A EP96116113 A EP 96116113A EP 0770776 B1 EP0770776 B1 EP 0770776B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- aperture
- high pressure
- housing
- power assisted
- 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
Links
Images
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0045—Three-way valves
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
Definitions
- the invention relates to a servo valve for an injection nozzle.
- Such a servo valve is described in SAE paper No. 910252 "Development of New Electronically Controlled Fuel Injection System ECD-U2 for Diesel Engines " described.
- Its valve member consists of an outer valve body and an in this guided inner valve body.
- the outer valve body is usually from a spring pushed down into contact with the first valve seat, so that the Return opening is closed.
- the inner valve member is the pressure in the Valve chamber moves upward and there is one formed in the outer valve member High pressure opening free.
- an electromagnetic coil When an electromagnetic coil is excited, it moves the outer valve member up and lifts off the first seat so that the Connection opening is connected to the return opening.
- the upward movement of the outer valve member stops until the second seat formed thereon is in System moves to the inner valve member, which closes the high pressure opening becomes.
- the known servo valve is relatively complex in its construction, since one in its housing trained guide for the outer valve member and one on the Inside of the outer valve member formed guide for the inner valve member must be manufactured precisely. The guidance between the inner valve member and the outer valve member is with the second seat open with high pressure fluid acts, which leads to leakage losses.
- the electromagnetic Actuation of the outer valve member inherently relatively large Delay times between the start of the excitation of the solenoid and the Movement of the outer valve member, which is relatively fraught with friction, since the outer valve member on its outside opposite the housing and on its inside moved relative to the inner valve member.
- a servo valve according to the preamble of claim 1 is known from DE-A-4 406 901.
- the usage of piezo actuators for servo valves is in the GB-A-2 087 660.
- the invention has for its object a generic servo valve to develop further so that the problems mentioned do not occur.
- the servo valve according to the invention characterized in the main claim is compact and extremely simple and therefore inexpensive to manufacture, especially because none Double fits are required.
- the valve member that passes directly through the return port is actuated by the actuator, can by means of Piezo actuator directly against that in the valve chamber prevailing high pressure can be opened, strokes in the order of 20 up to 30 ⁇ m are sufficient to switch the servo valve.
- the Piezo actuators and the small strokes are extremely fast switching times and precise Actuations of the servo valve possible.
- the speed curve is the Stroke movement of the valve member by appropriate control of the variable length component or actuators controllable so that the valve member in soft System comes to the seats, which is advantageous for a long life.
- the thermal coordination of the housing material to that of the piezo actuator avoids temperature influences on the position of the actuating element.
- the piezo actuator is advantageously arranged so that the injection nozzle is closed in the de-energized or de-energized state, which for system security is advantageous.
- With the servo valve according to the invention are extremely high System pressures possible.
- the high pressure line is directly to the valve chamber connected, whereby no piston guides or seals against high pressure similar are required.
- the subclaims relate to advantageous developments of the servo valve according to the invention directed.
- a fuel tank 2 via a filter and a prefeed pump 4 with a common rail (CR) high pressure pump 6 connected.
- CR common rail
- From the high pressure pump leads a line of a distribution line (common rail) 8, which leads 10 with each Cylinder assigned to a multi-cylinder internal combustion engine Injector 12 is connected.
- the injection nozzle units 12 are via return lines 14 with one leading to the tank 2 Return line 16 connected.
- the system pressure is limited by means of a limiting valve 18 and can last up to 2000 bar.
- the outputs of an electronic control unit 20 are connected to the high-pressure pump 6 and the injection nozzle units 12 connected.
- the inputs 22 of the control device are with a pressure sensor 24 in the distribution line 8 and other, not shown Sensors connected, for example for the position of an accelerator pedal, the driving speed, Temperatures, boost pressure, air mass, speed, etc.
- Fig. 2 shows the basic structure of an injection nozzle unit with the associated Hydraulic scheme.
- the injection nozzle unit contains a nozzle body 26 which ends in a nozzle needle, which rests on a valve seat when the injector is closed.
- the Nozzle body 26 extends through a nozzle chamber 28, which is connected to the feed line 10.
- the nozzle body 26 is connected to an actuator piston 30 or in one piece with this trained who works in a working chamber 32.
- the working chamber 32 is via a connecting line 34 with a connecting throttle 36 to a Connection opening 38 connected to a valve chamber 40 of a total is designed with 42 designated servo valve.
- the valve chamber 40 also has a high-pressure opening 44, which is connected via a an inlet throttle 46 provided high pressure line 48 connected to the feed line 10 is.
- a return opening 50 of the valve chamber 40 is connected to the return line 14.
- a valve member designed as a ball 52 protrudes through the Return opening 50 through a shaft 56 actuated by a piezo actuator 54
- Piezo actuator 54 is connected to the control unit via electrical connections (not shown) 20 (Fig. 1) connected.
- Piezo actuators are known per se and constructed like capacitors, their dielectric made of piezoelectric material, for example lead zirconate titanate ceramic consists. Modern actuators work with field strengths of up to 2000 V / mm and reach relative changes in length of up to 1.5 per mille. In the example shown With a length of the piezo actuator 40 of approximately 30 mm, a stroke of approximately Achieve 0.03 mm. A typical switching time is 50 ⁇ s, with the Speed of movement of the shaft 56 by appropriate control of the Piezo actuator 54 is controllable.
- FIG. 3 shows an overall sectional view of an injection nozzle unit 12 with housing 58 and High pressure connection 60 for connection to the distribution line 8 (Fig. 1). Not electrical connections are shown, by means of which the piezo actuator 54 with the Control unit 20 is connected.
- the entire injector unit 12 is directly on the cylinder head of an internal combustion engine attached, it is intended for the precision of valve actuation, different elongations between the piezo actuator 54 and the housing 58, which accommodates the piezo actuator 54.
- the housing 58 consists of one at least in the region of the piezo actuator 54 Low thermal expansion material similar to that of the piezo actuator 54, for example made of Invar steel.
- a screw 62 on the housing 58 attached insert bolts 64 are made of a material that is larger Has thermal expansion than that of the housing material, for example made of aluminum.
- FIG. 4 shows the middle area of the injector unit 12 of FIG. 3 in 5 again shows the central region of FIG. 4 in enlarged scale.
- Fig. 4 is the injection valve with the actuator piston 30 and that Servo valve receiving housing part 65 screwed to the housing 58.
- the Valve ball 52 of the servo valve is advantageously moved upwards by a spring 66 Contact with a pin 68 actuated by the piezo actuator 54 or a first seat 70 (Fig. 5) crowded.
- the pin 68 works with a in a bore of the housing 58, in which the piezo actuator 54 is also accommodated, brought together component 72 which is supported on the piezo actuator 54 via a hemisphere 74.
- a component 78 is provided for component 72 and the inner wall of bore 76.
- the Components 58, 72 and 74 form the shaft designated 56 in FIG. 2.
- a needle stroke transmitter 80 is provided for the displacement of the actuator piston 30 with the degree of opening of the injector, not shown in Fig. 4 exactly is determinable.
- FIG. 5 shows the central part of the servo valve
- the two housing bodies 82 and 84 has that between the housing 58 and the screwed to this housing part 65 are strained against each other.
- the housing body 82 and 84 have mutually aligned bores, one Form part of the high pressure line 10. Further is that Housing body 82 is provided with a through hole 86 with a blind hole 88 of the housing body 84 is aligned. One leads from the blind bore 88 to the feed line 10 the bore representing the high pressure line 48.
- the through hole 86 ends at the top in an annular recess 90, from which from the return line 14, not shown in FIGS. 4 and 5.
- the one in Fig. 4 The pin 68 shown advantageously has longitudinal grooves on its outside, so that it does not close the through hole 86.
- the ball 52 In the de-energized state of the piezo actuator 54, the ball 52 is on the in the Fig. upper, i.e. first seat 70 (Fig. 5). Thus, the return line 14 is closed and the High pressure line 48 connected to the connecting line 34 so that the Working chamber 32 is pressurized with high pressure when the system pressure is present. The Injection nozzle is then closed, since the nozzle body 26 on the Working chamber 32 forth force is greater than that from the nozzle chamber 28 forth Acting force.
- the dynamics of the system is due to the extremely small valve lift and that rapid response behavior of the piezo actuator is extremely precise and can Appropriate choice of chokes 46 and / or 36 can be varied.
- the period, meanwhile both seats are open and the high pressure line 48 with the return line 14 is extremely short, so that losses to a minimum are reduced.
Description
- Fig. 1
- ein Gesamtschema eines common-rail-Systems,
- Fig. 2
- das Hydraulikschema mit einem erfindungsgemäßen Servoventil,
- Fig. 3
- einen Schnitt durch ein erfindungsgemäßes Servoventil mit integrierter Ein spritzdüse,
- Fig. 4
- eine vergrößerte Ansicht eines Ausschnitts der Fig. 3 und
- Fig. 5
- eine vergrößerte Ansicht eines Ausschnitts der Fig. 4.
Claims (7)
- Servoventil für eine Einspritzdüse, insbesondere für common-rail-Systeme, enthaltend:ein Gehäuse (82, 84) mit einer Ventilkammer (40), einer Hochdrucköffnung (44), einer Verbindungsöffnung (38) und einer Rücklauföffnung (50),und ein in der Ventilkammer bewegliches Ventilglied (52), welches mittels eines durch die Rücklauföffnung (58) hindurchragenden, von einer elektrisch betriebenen Betätigungsvorrichtung (54, 56) bewegten Betätigungsgliedes (68) der Betätigungsvorrichtung (54, 56) entweder an einen ersten Sitz (70) oder einen zweiten Sitz (90) in Anlage bringbar ist, wobei das Ventilglied bei Anlage an den ersten Sitz die Rücklauföffnung schließt und die Hochdrucköffnung mit der Verbindungsöffnung verbindet und bei Anlage an den zweiten Sitz die Hochdrucköffnung schließt und die Verbindungsöffnung mit der Rücklauföffnung verbindet, undwobei die Verbindungsöffnung mit einer Arbeitskammer (32) der Einspritzdüse verbunden ist, deren von einem ständig unter Hochdruck stehendem Düsenraum (28) ausgehende Düse bei mit Hochdruck beaufschlagter Arbeitskammer geschlossen ist, und bei Druckabfall in der Arbeitskammer öffnet,
- Servoventil nach Anspruch 1, dadurch gekennzeichnet, daß zwischen dem Piezoaktuator (54) und dem Bauteil (62) ein weiteres Bauteil (64) angeordnet ist, dessen Material derart auf das des Gehäuses (58) und des Piezoaktuators abgestimmt ist, daß thermische Ausdehnungen ohne Einfluß auf die Lage des Betätigungsgliedes (68) sind.
- Servoventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Ventilglied als Kugel (52) ausgebildet ist.
- Servoventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Ventilkammer (40) zwischen den einander zugewandten Enden zweier miteinander fluchtender, in unterschiedlichen Gehäuseteilen (82, 84) ausgebildeten Bohrungen (86, 88) ausgebildet ist, deren zueinandergewandte Stirnenden die Ventilsitze (70, 90) bilden und gegenüber dem in der Ventilkammer aufgenommenen Ventilglied (52) mit dessen Hub entsprechendem Übermaß voneinander beabstandet sind.
- Servoventil nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß das Ventilglied bei spannungslosem Piezoaktuator (54) in Anlage am ersten Sitz (70) ist.
- Servoventil nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß in der zur Hochdrucköffnung (44) führenden Hochdruckleitung (48) eine Zulaufdrossel (46) angeordnet ist.
- Servoventil nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der in der Verbindungsöffnung (38) zur Arbeitskammer (32) führenden Verbindungsleitung (34) eine Drossel (36) angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19540155 | 1995-10-27 | ||
DE19540155A DE19540155C2 (de) | 1995-10-27 | 1995-10-27 | Servoventil für eine Einspritzdüse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0770776A1 EP0770776A1 (de) | 1997-05-02 |
EP0770776B1 true EP0770776B1 (de) | 2000-08-09 |
Family
ID=7776010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96116113A Expired - Lifetime EP0770776B1 (de) | 1995-10-27 | 1996-10-08 | Servoventil für eine Einspritzdüse |
Country Status (6)
Country | Link |
---|---|
US (1) | US5819710A (de) |
EP (1) | EP0770776B1 (de) |
JP (1) | JPH09184463A (de) |
CN (1) | CN1062493C (de) |
DE (2) | DE19540155C2 (de) |
ES (1) | ES2151627T3 (de) |
Families Citing this family (46)
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US5792045A (en) * | 1994-10-03 | 1998-08-11 | Adair; Edwin L. | Sterile surgical coupler and drape |
DE19727992C2 (de) * | 1997-07-01 | 1999-05-20 | Siemens Ag | Ausgleichselement zur Kompensation temperaturbedingter Längenänderungen von elektromechanischen Stellsystemen |
DE19732802A1 (de) * | 1997-07-30 | 1999-02-04 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE19757659C1 (de) | 1997-12-23 | 1999-06-17 | Siemens Ag | Einspritzventil mit einer Ausgleichsfläche |
DE19823937B4 (de) * | 1998-05-28 | 2004-12-23 | Siemens Ag | Servoventil für Kraftstoffeinspritzventil |
DE19826341A1 (de) * | 1998-06-12 | 1999-12-16 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE19844996A1 (de) * | 1998-09-30 | 2000-04-13 | Siemens Ag | Vorrichtung und Verfahren zur Dosierung von Fluid |
DE19919665A1 (de) * | 1999-04-29 | 2000-11-02 | Volkswagen Ag | Kraftstoffeinspritzvorrichtung |
DE19925308A1 (de) * | 1999-06-02 | 2000-12-14 | Orange Gmbh | Kraftstoffinjektor für eine Brennkraftmaschine |
JP4038941B2 (ja) * | 1999-08-02 | 2008-01-30 | 株式会社デンソー | ピエゾインジェクタ |
US6253736B1 (en) | 1999-08-10 | 2001-07-03 | Cummins Engine Company, Inc. | Fuel injector nozzle assembly with feedback control |
DE19946833C2 (de) * | 1999-09-30 | 2002-02-21 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE19947772A1 (de) * | 1999-10-05 | 2001-04-19 | Hermann Golle | Einspritzventil, insb. für Common-Rail-Einspritzsysteme |
DE19949528A1 (de) * | 1999-10-14 | 2001-04-19 | Bosch Gmbh Robert | Doppelschaltendes Steuerventil für einen Injektor eines Kraftstoffeinspritzsystems für Brennkraftmaschinen mit hydraulischer Verstärkung des Aktors |
US6584958B2 (en) | 1999-10-15 | 2003-07-01 | Westport Research Inc. | Directly actuated injection valve with a ferromagnetic needle |
US6575138B2 (en) | 1999-10-15 | 2003-06-10 | Westport Research Inc. | Directly actuated injection valve |
US6298829B1 (en) | 1999-10-15 | 2001-10-09 | Westport Research Inc. | Directly actuated injection valve |
US6564777B2 (en) | 1999-10-15 | 2003-05-20 | Westport Research Inc. | Directly actuated injection valve with a composite needle |
DE19950224A1 (de) * | 1999-10-19 | 2001-04-26 | Bosch Gmbh Robert | Doppelschaltendes Steuerventil für einen Injektor eines Kraftstoffeinspritzsystems für Brennkraftmaschinen mit kugelförmigem Stellglied |
DE19952774B4 (de) * | 1999-11-03 | 2004-03-11 | Daimlerchrysler Ag | Vorrichtung zum Ablassen von Fluid aus einem System |
JP4048699B2 (ja) * | 1999-11-10 | 2008-02-20 | 株式会社デンソー | 燃料噴射弁 |
US6313568B1 (en) | 1999-12-01 | 2001-11-06 | Cummins Inc. | Piezoelectric actuator and valve assembly with thermal expansion compensation |
DE10003863B4 (de) * | 2000-01-28 | 2004-11-18 | Robert Bosch Gmbh | Einspritzdüse |
US6257203B1 (en) * | 2000-02-10 | 2001-07-10 | International Truck And Engine Corporation | Injector with variable needle valve opening pressure |
WO2001071823A2 (en) | 2000-03-22 | 2001-09-27 | Siemens Vdo Automotive Corporation | Method of control for a self-sensing magnetostrictive actuator |
DE10024703A1 (de) * | 2000-05-18 | 2001-11-22 | Bosch Gmbh Robert | Einspritzanordnung für ein Kraftstoff-Speichereinspritzsystem einer Verbrennungsmaschine |
US6363913B1 (en) * | 2000-06-09 | 2002-04-02 | Caterpillar Inc. | Solid state lift for micrometering in a fuel injector |
JP4356268B2 (ja) | 2000-06-26 | 2009-11-04 | 株式会社デンソー | 燃料噴射装置 |
US6345771B1 (en) | 2000-06-30 | 2002-02-12 | Siemens Automotive Corporation | Multiple stack piezoelectric actuator for a fuel injector |
US6400066B1 (en) | 2000-06-30 | 2002-06-04 | Siemens Automotive Corporation | Electronic compensator for a piezoelectric actuator |
DE10044389A1 (de) * | 2000-09-08 | 2002-04-04 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE10123775B4 (de) * | 2001-05-16 | 2005-01-20 | Robert Bosch Gmbh | Kraftstoff-Einspritzvorrichtung für Brennkraftmaschinen, insbesondere Common-Rail-Injektor, sowie Kraftstoffsystem und Brennkraftmaschine |
US6499471B2 (en) | 2001-06-01 | 2002-12-31 | Siemens Automotive Corporation | Hydraulic compensator for a piezoelectrical fuel injector |
DE10131631A1 (de) * | 2001-06-29 | 2003-01-16 | Bosch Gmbh Robert | Kraftstoffinjektor mit hochdruckfestigkeitsoptimiertem Steuerraum |
DE10142798C2 (de) * | 2001-08-31 | 2003-07-31 | Bosch Gmbh Robert | Lagerung für ein Piezoaktormodul in einem Common-Rail-Injektor |
US6766965B2 (en) | 2001-08-31 | 2004-07-27 | Siemens Automotive Corporation | Twin tube hydraulic compensator for a fuel injector |
DE10155718C2 (de) * | 2001-11-13 | 2003-09-18 | Hermann Golle | Einspritzsystem für Dieselmotoren |
US6837221B2 (en) | 2001-12-11 | 2005-01-04 | Cummins Inc. | Fuel injector with feedback control |
DE10257895A1 (de) * | 2002-12-11 | 2004-06-24 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10315016A1 (de) * | 2003-04-02 | 2004-10-28 | Robert Bosch Gmbh | Kraftstoffinjektor mit leckagefreiem Servoventil |
JP4740870B2 (ja) * | 2003-11-20 | 2011-08-03 | バイキング テクノロジィーズ エル.シー. | 電気機械アクチュエータの一体式熱補償 |
US7255290B2 (en) * | 2004-06-14 | 2007-08-14 | Charles B. Bright | Very high speed rate shaping fuel injector |
EP1760306A1 (de) * | 2005-09-06 | 2007-03-07 | Siemens Aktiengesellschaft | Gehäusekörper |
DE102005042342B4 (de) * | 2005-09-06 | 2009-04-02 | Continental Automotive Gmbh | Einspritzventil mit separater Kraftstoffleitung |
DE102009055362A1 (de) * | 2009-12-29 | 2011-06-30 | Robert Bosch GmbH, 70469 | Einspritzventil für ein Fluid |
GB2573522B (en) * | 2018-05-08 | 2020-08-19 | Delphi Tech Ip Ltd | Method of identifying faults in the operation of hydraulic fuel injectors having accelerometers |
Family Cites Families (14)
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GB1470166A (en) * | 1973-05-12 | 1977-04-14 | Cav Ltd | Fuel injection pumping apparatus |
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US4550744A (en) * | 1982-11-16 | 1985-11-05 | Nippon Soken, Inc. | Piezoelectric hydraulic control valve |
JPS601877A (ja) * | 1983-06-20 | 1985-01-08 | Nippon Soken Inc | 積層型圧電体 |
FR2580728B1 (fr) * | 1985-04-19 | 1989-05-05 | Alsacienne Constr Meca | Systeme d'injection de combustible pour moteur diesel |
IT1217260B (it) * | 1987-08-25 | 1990-03-22 | Weber Srl | Valvola di iniezione del combustibile a comando elettromagnetico per motori a ciclo diesel |
JPH01187363A (ja) * | 1988-01-21 | 1989-07-26 | Toyota Motor Corp | 内燃機関用燃料噴射弁 |
JPH0286953A (ja) * | 1988-09-21 | 1990-03-27 | Kanesaka Gijutsu Kenkyusho:Kk | 燃料噴射弁 |
JP2712760B2 (ja) * | 1990-05-29 | 1998-02-16 | トヨタ自動車株式会社 | 燃料噴射弁 |
DE4302668A1 (de) * | 1993-01-30 | 1994-08-04 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
DE4340305C2 (de) * | 1993-11-26 | 1998-02-19 | Daimler Benz Ag | Kraftstoffeinspritzdüse für eine Brennkraftmaschine |
DE4406901C2 (de) * | 1994-03-03 | 1998-03-19 | Daimler Benz Ag | Magnetventilgesteuerter Injektor für eine Brennkraftmaschine |
US5605134A (en) * | 1995-04-13 | 1997-02-25 | Martin; Tiby M. | High pressure electronic common rail fuel injector and method of controlling a fuel injection event |
-
1995
- 1995-10-27 DE DE19540155A patent/DE19540155C2/de not_active Expired - Fee Related
-
1996
- 1996-10-08 DE DE59605709T patent/DE59605709D1/de not_active Expired - Fee Related
- 1996-10-08 ES ES96116113T patent/ES2151627T3/es not_active Expired - Lifetime
- 1996-10-08 EP EP96116113A patent/EP0770776B1/de not_active Expired - Lifetime
- 1996-10-24 JP JP8281197A patent/JPH09184463A/ja not_active Withdrawn
- 1996-10-25 US US08/735,971 patent/US5819710A/en not_active Expired - Fee Related
- 1996-10-28 CN CN96120369A patent/CN1062493C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19540155A1 (de) | 1997-04-30 |
ES2151627T3 (es) | 2001-01-01 |
CN1062493C (zh) | 2001-02-28 |
DE19540155C2 (de) | 2000-07-13 |
JPH09184463A (ja) | 1997-07-15 |
CN1156216A (zh) | 1997-08-06 |
EP0770776A1 (de) | 1997-05-02 |
DE59605709D1 (de) | 2000-09-14 |
US5819710A (en) | 1998-10-13 |
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