EP1073836A1 - Ensemble buse pour le dosage de liquides ou de gaz - Google Patents

Ensemble buse pour le dosage de liquides ou de gaz

Info

Publication number
EP1073836A1
EP1073836A1 EP00907430A EP00907430A EP1073836A1 EP 1073836 A1 EP1073836 A1 EP 1073836A1 EP 00907430 A EP00907430 A EP 00907430A EP 00907430 A EP00907430 A EP 00907430A EP 1073836 A1 EP1073836 A1 EP 1073836A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
nozzle unit
unit
needle
nozzle needle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00907430A
Other languages
German (de)
English (en)
Other versions
EP1073836B1 (fr
Inventor
Friedrich Boecking
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 EP1073836A1 publication Critical patent/EP1073836A1/fr
Application granted granted Critical
Publication of EP1073836B1 publication Critical patent/EP1073836B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/042—The valves being provided with fuel passages
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size

Definitions

  • Nozzle unit for dosing liquids or gases
  • the present invention relates to a nozzle unit for dosing liquids or gases, with a nozzle body and a nozzle needle guided in a guide bore of the nozzle body between an open and a closed position, wherein the
  • Nozzle needle controls at least one metering opening and rests in the closed position on a sealing seat of the nozzle body.
  • the invention also relates to a metering valve for metering liquids or gases, with a nozzle unit and an actuator unit for actuating the nozzle unit.
  • Such nozzle units and metering valves are known in various embodiments from the prior art.
  • the known metering valves are, for example. as injectors for fuel injection systems from
  • Such metering valves have a nozzle unit for metering fuel and an actuator unit for actuating the nozzle unit.
  • the nozzle unit has a nozzle body, in which a guide hole is made along the longitudinal axis.
  • a nozzle needle is slidably guided in the guide bore between an open and a closed position.
  • At the A lower seat is formed on the lower end of the nozzle unit.
  • several metering openings are made in the nozzle body, which extend radially outward from the guide bore.
  • the nozzle needle In the closed position of the nozzle unit, the nozzle needle lies on the sealing seat and prevents the fuel from escaping from the nozzle unit through the metering openings.
  • a high pressure builds up inside the nozzle unit, which causes the nozzle needle to move in the direction of the open position.
  • the nozzle needle In the course of the opening stroke, the nozzle needle is lifted outward from the sealing seat and fuel can emerge from the nozzle unit through the metering openings.
  • the flow rate of the in the course of the opening stroke from the; Opened nozzle unit emerging fuel is throttled by the cross-sectional area that opens between the nozzle needle and the sealing seat. Only when the nozzle unit is relatively wide open is the cross-sectional area between the nozzle needle and the sealing seat larger than the cross-sectional area of the metering openings. Then the flow rate is throttled by the cross-sectional area of the metering openings.
  • the nozzle unit described thus has a so-called seat throttling.
  • the known nozzle unit opens to the outside.
  • An outwardly opening nozzle unit is also referred to as an A nozzle, or a metering valve with such an outwardly opening nozzle unit is also referred to as an A valve.
  • a problem with the A nozzles or the A valves represents the opening direction of the nozzle needle to the outside.
  • vario nozzles have been known from the prior art which have no seat restriction.
  • the nozzle needle is in the closed position of the nozzle unit also on the sealing seat and seals one or more metering openings. In the course of the opening stroke, the nozzle needle is lifted outwards from the sealing seat. However, the metering openings are only released when the nozzle needle is one
  • Tothub has overcome.
  • a cross-sectional area that is larger than the cross-sectional area of the metering openings has already opened up between the nozzle needle and the sealing seat.
  • the metering openings are released and fuel can escape from the nozzle unit through the metering openings.
  • the flow rate of the fuel emerging through the opened nozzle unit is throttled by the cross-sectional area of the metering openings; Vario nozzles therefore have no seat restriction.
  • the vario nozzles known from the prior art are designed as A nozzles.
  • the metering openings are made in the nozzle needle and run radially outwards.
  • the outer openings of the metering openings are located within the guide bore and are closed by the inner wall of the nozzle body.
  • the nozzle needle is moved out of the guide bore so far that the metering openings emerge from the nozzle body and the orifices are released, so that fuel can emerge from the nozzle unit through the metering openings. Because of the movable metering openings, no known direction and shape of the jet emerging from the metering openings can be guaranteed in the known vario nozzles over the entire opening stroke. Since the noise, the exhaust gas behavior and the consumption of the internal combustion engine are also influenced by the direction and the shape of the fuel jet, a bad thing can happen with the known Vario nozzles Noise, exhaust gas and / or consumption behavior of the internal combustion engine result.
  • Actuation of the nozzle unit within the dead stroke rests in a guide gap between the nozzle body in the region of the guide bore and the nozzle needle.
  • the high pressure is present in particular in the outwardly directed region of the guide gap and can result in a small amount of fuel being pushed out of the guide gap, although the nozzle unit is located within the dead stroke and no fuel should come out of the nozzle unit.
  • the amount of fuel squeezed out of the guide gap can enter the combustion chamber
  • the invention proposes, starting from the nozzle unit of the type mentioned at the outset, that the nozzle needle opens inwards and has a dead stroke.
  • the nozzle needle lies on the sealing seat in the closed position of the nozzle unit and seals one or more metering openings.
  • the metering openings preferably extend radially outward in the nozzle body from the guide bore to the outer circumference of the nozzle body.
  • the nozzle needle lies within a dead stroke over the inner mouths of the Metering openings.
  • the inner mouths of the metering openings are closed by the outer wall of the nozzle needle.
  • the nozzle needle is lifted inwards from the sealing seat. They are only opened when the nozzle needle has overcome the dead stroke.
  • a cross-sectional area that is larger than the cross-sectional area of the metering openings has already opened up between the nozzle needle and the sealing seat.
  • the flow rate of the medium emerging from the open nozzle unit is determined by the
  • the nozzle unit according to the invention is designed as a so-called vario nozzle without seat restriction.
  • the nozzle unit according to the invention also opens inwards. As a result, there are no space problems at the front end of the nozzle unit due to the nozzle needle emerging from the nozzle body in the course of the opening stroke.
  • the metering openings formed in the nozzle body are arranged in a stationary manner and do not move with the nozzle needle during the opening stroke. This ensures a constant direction and shape of the jet of the medium to be metered emerging from the metering openings over the entire opening stroke. The direction and shape of the
  • Beam can be precisely defined and defined in accordance with the external requirements, for example in accordance with a desired noise, exhaust gas and / or consumption behavior of an internal combustion engine.
  • the nozzle unit according to the invention advantageously combines for the first time the advantages of a vario nozzle with the advantages of an inward opening I nozzle.
  • the nozzle unit as a Injection nozzle is designed for a fuel injection system of an internal combustion engine.
  • the nozzle unit is preferably designed as an injector for a common rail (CR) injection system of an internal combustion engine.
  • CR common rail
  • an inlet line is formed in the nozzle body which opens into an annular chamber which is formed on the inner circumference of the guide bore, the annular chamber being formed at least in the closed position of the nozzle unit with a nozzle needle Cross bore is connected, from which branches a longitudinal bore formed in the nozzle needle, which opens into a pressure chamber at the tip of the nozzle needle.
  • a high pressure is built up within the nozzle unit, more precisely within the feed line, the annular chamber, the transverse bore, the longitudinal bore and the pressure chamber.
  • the high pressure built up in the pressure chamber acts on a surface at the tip of the nozzle needle within the sealing seat and causes the nozzle needle to move in the direction of the open position. After the dead stroke has been overcome, a certain amount of the liquid or the gas can emerge from the nozzle unit through the metering openings.
  • the pressure chamber In the closed position of the nozzle unit, the pressure chamber is advantageously delimited at the top by the nozzle needle, at the bottom by the nozzle body and laterally by the sealing seat.
  • the pressure chamber In the open position of the nozzle unit within the dead stroke, the pressure chamber is advantageously upward from the nozzle needle, downward from the nozzle body and laterally through the inner wall of the Nozzle body in the region of the guide bore and a guide seat between the guide bore and the nozzle needle limited.
  • the pressure chamber In the open position of the nozzle unit outside of the dead stroke, the pressure chamber opens into the at least one metering opening. In this position, a certain amount of a medium to be dosed can emerge from the nozzle unit through the metering openings.
  • the annular chamber In the open position of the nozzle unit outside the dead stroke, the annular chamber is preferably delimited by the outer wall of the nozzle needle.
  • the connection between the annular chamber and the transverse bore is thus interrupted in the open position outside the dead stroke. In this position, no further medium to be metered can then flow from the inlet into the pressure chamber. In this way, the amount of the medium to be metered, which is to emerge from the nozzle unit in the open position outside the dead stroke, can be limited to the volume of the transverse bore, the longitudinal bore and the pressure chamber.
  • annular leakage chamber is formed on the inner circumference of the guide bore between the annular chamber and the pressure chamber, from which a leakage line branches off. Only in the area of the guide gap between the annular chamber and the leakage chamber is the high pressure from the inlet within the dead stroke. In the remaining area of the guide gap, in particular at the front end of the guide gap, there is a much lower one
  • a plurality of first metering openings are formed in the nozzle body, above which a plurality of second metering openings are formed, the first metering openings having a smaller cross-sectional area than the second metering openings.
  • the metering openings preferably have a circular cross-sectional area.
  • the nozzle unit When the nozzle unit is used as an injection nozzle for a fuel injection system of an internal combustion engine, the amount of fuel emerging from the first metering openings can be used for the pre-injection and the amount of fuel emerging somewhat later from the first and second metering openings can be used for the main injection.
  • An even greater variability in the metering of the medium to be metered can advantageously be achieved in that several metering orifices with an elongated cross-sectional area are formed in the nozzle body, the longitudinal axes of the cross-sectional areas running parallel to the longitudinal axis of the nozzle unit.
  • the size of the effective cross-sectional area of the metering openings is determined in the open position of the nozzle unit outside the dead stroke by the opening stroke of the nozzle needle.
  • Another object of the present invention is to provide a metering valve of the type mentioned at the outset, which has a nozzle unit which on the one hand has no seat restriction, but on the other hand does not have the disadvantages mentioned at the outset.
  • the invention proposes starting from the metering valve of the type mentioned that the nozzle unit as a nozzle unit according to one of the claims 1 to 11 is formed.
  • the feed line opens via an inlet throttle into a valve control chamber, from which a drain line branches off via an outlet throttle and a control valve.
  • the control valve In the closed position of the nozzle unit, the control valve is open.
  • the medium to be dosed is conveyed by a pump arrangement into the nozzle unit via the feed line.
  • the control valve When the control valve is open, the pumped medium can flow from the supply line via the supply throttle, the valve control chamber and the discharge throttle into the discharge line.
  • the nozzle unit of the metering valve according to the invention is actuated by activating the actuator unit.
  • Activation of the actuator unit closes the control valve in the drain line.
  • Medium to be metered continues to flow into the nozzle unit via the feed line. Since the medium to be metered cannot flow out of the nozzle unit when the control valve is closed when the control valve is closed, pressure builds up in the valve control chamber, the inlet, the annular chamber, the transverse bore, the longitudinal bore and in the pressure chamber.
  • the nozzle needle Due to the pressure build-up, various forces act on the nozzle needle. Firstly, the nozzle needle is pressed into the closed position by the spring force of a nozzle spring. On the other hand, the rear end of the nozzle needle opens into the valve control chamber. The one in the
  • Valve control chamber built up pressure acts on the surface of the end of the nozzle needle protruding into the valve control chamber and generates a control force by which the nozzle needle is pressed into the closed position. Finally, the pressure built up in the pressure chamber acts on a surface at the tip of the nozzle needle and generates an actuating force, through which the nozzle needle is pressed into the open position.
  • the nozzle needle As soon as the actuation force exceeds the sum of the spring force and the control force due to the pressure increase, the nozzle needle is moved in the direction of the open position.
  • the movement of the nozzle needle in the direction of the open position ends when the actuating force becomes smaller than the sum of the spring force and the control force due to a pressure reduction in the pressure chamber.
  • a decrease in pressure can either occur if the metering openings are released outside the dead stroke and the medium to be metered can emerge from the nozzle unit through the metering openings, or if the actuator unit is deactivated again, the control valve is opened and the medium to be metered is discharged into the Drain pipe can flow.
  • FIG. 1 shows an inventive metering valve according to a preferred embodiment
  • FIG. 2 shows the tip of a nozzle unit according to the invention in accordance with a preferred embodiment
  • FIG 3 shows the tip of a nozzle unit according to the invention with a plurality of metering openings arranged one above the other;
  • Fig. 4 shows the tip of a nozzle unit according to the invention with elongated metering openings.
  • an inventive metering valve according to a preferred embodiment is in its entirety marked with the reference number 1.
  • the metering valve 1 is used for metering liquids or gases. It has a nozzle unit 2 and an actuator unit 3 for actuating the nozzle unit 2.
  • the actuator unit 3 is designed, for example, as an electromagnet or a piezoelectric actuator.
  • the metering valve 1 is designed as an injector for a common rail injection system of an internal combustion engine.
  • the metering valve 1 is fastened to the internal combustion engine by means of a clamping nut 10 such that the tip of the nozzle unit 2 projects into the combustion chamber of the internal combustion engine.
  • the nozzle unit 2 has a nozzle body 4 and a nozzle needle 6 which is displaceably guided in a guide bore 5 of the nozzle body 4 between an open and a closed position.
  • a nozzle needle 6 At the tip of the nozzle unit 2, two metering openings 9 open into the guide bore 5.
  • the nozzle needle 6 controls the two metering openings 9. In the closed position, the nozzle needle 6 rests on a sealing seat 8 of the nozzle body 4 and prevents this
  • the nozzle unit 2 is shown in FIG. 1 in the closed position. In the open position, the nozzle needle 6 is lifted off the sealing seat 8 and, after having overcome a dead stroke (hr), allows fuel to emerge from the metering openings 9.
  • an inlet line 11 is formed which opens into an annular chamber 12 which is formed on the inner circumference of the guide bore 5.
  • the annular chamber 12 is connected to a transverse bore 13 formed in the nozzle needle 6.
  • the inlet line 11 also opens out via a Inlet throttle 16 into a valve control chamber 17.
  • a drain line 20 branches off from the valve control chamber 10 via an outlet throttle 18 and a control valve 19.
  • Control valve 19 opened, so that fuel pumped from a pump arrangement (not shown) into the feed line 11 can flow via the feed throttle 16 into the valve control chamber 17 and from there via the drain throttle 18 into the drain line 20.
  • the actuator unit 3 is activated, whereby the control valve 19 is closed. Since the fuel delivered by the pump arrangement can no longer flow away, a pressure is built up in the valve control chamber 17 of the feed line 11, the annular chamber 12, the transverse bore 13, the longitudinal bore 14 and in the pressure chamber 15. Various forces now act on the nozzle needle 6 of the nozzle unit 2.
  • the nozzle needle 6 is pressed into the closed position by the spring force of a nozzle spring 21. Due to the pressure built up in the valve control chamber 17, which acts on a surface 6a at the rear end of the nozzle needle 6, a control force also acts on the nozzle needle 6 and presses it into the closed position. Finally, the pressure built up in the pressure chamber 15 acts on a surface 6b at the tip of the nozzle needle 6 and generates an actuating force by which the nozzle needle 6 is pressed into the open position.
  • the nozzle needle 6 is moved in the direction of the open position.
  • the movement of the nozzle needle 6 towards the open position ends as soon as the built up pressure is reduced so far that the actuating force is less than the sum of the spring force and the control force.
  • the metering openings 9 are released and fuel can emerge from the nozzle unit 2 through the metering openings 9.
  • a cross-sectional area which is larger than the cross-sectional area of the metering openings 9 has already opened up between the sealing seat 8 and the nozzle needle 6. Therefore, the flow rate of the fuel emerging from the opened nozzle unit 2 is throttled by the cross-sectional area of the metering openings 9.
  • the nozzle unit 2 of the metering valve 1 according to the invention is thus designed as a vario nozzle without seat restriction.
  • the nozzle unit 2 can thus assume three different positions. In the closed position, the pressure chamber 15 is delimited upwards by the surface 6b at the tip of the nozzle needle 6, downwards by the nozzle body 4 and laterally by the sealing seat 8. In the open position of the nozzle unit 2, the pressure chamber 15 within the dead stroke (hT) upwards from the top of the
  • Nozzle needle 6, down from the nozzle body 4 and laterally limited by the guide bore 5 and the guide seat 22 between the guide bore 5 and the nozzle needle 6.
  • the pressure chamber 15 opens into the metering openings 9.
  • An annular leakage chamber 23 is formed on the inner circumference of the guide bore (5) between the annular chamber 12 and the tip 6b of the pressure chamber 15, from which a leakage line 24 branches off and opens into the drain line 20. Because of the leakage chamber 23, the pressure built up in the nozzle unit 2 is present only in the region of the guide gap between the annular chamber 12 and the leakage chamber 23. In the remaining area of the guide oil between the leakage chamber 23 and the
  • Pressure chamber 15 is only a much smaller leak pressure.
  • Dosing openings 9 formed. In order to be able to variably adjust the flow rate of the fuel emerging from the nozzle unit 2 in the open position outside the dead stroke (hT), it is also conceivable to have a plurality of metering openings 9a, 9b with a different one

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Ensemble (2) buse pour le dosage de liquides ou de gaz, qui possède un corps (4) de buse et un pointeau (6) guidé coulissant dans un trou de guidage (5) du corps (4) de buse entre une position d'ouverture et une position de fermeture. Ledit pointeau (6) commande au moins une ouverture de dosage (9) débouchant dans le trou de guidage (5) et repose, dans la position fermée, sur un siège étanche (8) du corps (4) de buse. La présente invention concerne un ensemble (2) buse dont le pointeau (6) s'ouvre vers l'intérieur et possède une course morte (hT). Ledit ensemble (2) buse est conçu de préférence en tant qu'injecteur pour un système d'injection à rampe commune d'un moteur à combustion interne.
EP00907430A 1999-02-20 2000-01-14 Ensemble buse pour le dosage de liquides ou de gaz Expired - Lifetime EP1073836B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19907356A DE19907356A1 (de) 1999-02-20 1999-02-20 Düseneinheit zur Dosierung von Flüssigkeiten oder Gasen
DE19907356 1999-02-20
PCT/DE2000/000123 WO2000049287A1 (fr) 1999-02-20 2000-01-14 Ensemble buse pour le dosage de liquides ou de gaz

Publications (2)

Publication Number Publication Date
EP1073836A1 true EP1073836A1 (fr) 2001-02-07
EP1073836B1 EP1073836B1 (fr) 2004-10-20

Family

ID=7898298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00907430A Expired - Lifetime EP1073836B1 (fr) 1999-02-20 2000-01-14 Ensemble buse pour le dosage de liquides ou de gaz

Country Status (4)

Country Link
EP (1) EP1073836B1 (fr)
JP (1) JP2002537516A (fr)
DE (2) DE19907356A1 (fr)
WO (1) WO2000049287A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002130087A (ja) 2000-10-23 2002-05-09 Toyota Motor Corp 筒内噴射式内燃機関用燃料噴射弁
DE10157886B4 (de) * 2000-11-27 2009-12-17 DENSO CORPORATION, Kariya-shi Kraftstoffeinspritzeinheit eines Verbrennungsmotors
DE10148350A1 (de) * 2001-09-29 2003-04-24 Bosch Gmbh Robert Kraftstoff-Einspritzvorrichtung, insbesondere Injektor für Brennkraftmaschinen mit Direkteinspritzung, sowie Kraftstoffsystem und Brennkraftmaschine
EP2049788A1 (fr) * 2006-08-09 2009-04-22 Siemens Aktiengesellschaft Dispositif d'injection de combustible pour un moteur à combustion

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH380441A (de) * 1959-12-31 1964-07-31 Milleville Maurice Maria Josep Vorrichtung zum Einspritzen eines flüssigen oder gasförmigen Mittels unter Druck in ein Medium
US3131866A (en) * 1961-12-07 1964-05-05 Clessie L Cummins Fuel injector
DE2711902A1 (de) * 1977-03-18 1978-09-21 Bosch Gmbh Robert Kraftstoffeinspritzduese
DE3227186A1 (de) * 1982-07-21 1984-01-26 Menzolit-Werke Albert Schmidt Gmbh & Co Kg, 7527 Kraichtal Einspritzkopf, insbesondere zum aufbringen einer beschichtung auf flaechige werkstuecke
JPH08144896A (ja) * 1994-11-25 1996-06-04 Zexel Corp 可変噴孔型燃料噴射ノズル
AT2164U3 (de) * 1997-08-07 1999-02-25 Avl List Gmbh Einspritzdüse für eine direkt einspritzende brennkraftmaschine
DE19755057A1 (de) * 1997-12-11 1999-06-17 Bosch Gmbh Robert Kraftstoffeinspritzdüse für selbstzündende Brennkraftmaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0049287A1 *

Also Published As

Publication number Publication date
EP1073836B1 (fr) 2004-10-20
DE50008301D1 (de) 2004-11-25
WO2000049287A1 (fr) 2000-08-24
DE19907356A1 (de) 2000-10-12
JP2002537516A (ja) 2002-11-05

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