EP1273790A3 - Fuel injector for internal combustion engines - Google Patents

Fuel injector for internal combustion engines Download PDF

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Publication number
EP1273790A3
EP1273790A3 EP02006852A EP02006852A EP1273790A3 EP 1273790 A3 EP1273790 A3 EP 1273790A3 EP 02006852 A EP02006852 A EP 02006852A EP 02006852 A EP02006852 A EP 02006852A EP 1273790 A3 EP1273790 A3 EP 1273790A3
Authority
EP
European Patent Office
Prior art keywords
internal combustion
housing
combustion engines
piston
fuel injector
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Withdrawn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
EP02006852A
Other languages
German (de)
French (fr)
Other versions
EP1273790A2 (en
Inventor
Tibor Bauer
Claudio Arrabito
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 EP1273790A2 publication Critical patent/EP1273790A2/en
Publication of EP1273790A3 publication Critical patent/EP1273790A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift

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

Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem Gehäuse (1), in dem eine kolbenförmige Ventilnadel (10) längsverschiebbar angeordnet ist, die durch ihre Längsbewegung mit dem brennraumseitigen Ende wenigstens eine Einspritzöffnung (16) steuert. In einer im Gehäuse (1) ausgebildeten Kolbenbohrung (26) ist ein Ventilkolben (30) angeordnet, der zumindest näherungsweise koaxial zur Ventilnadel (10) längsverschiebbar ist und der unter Zwischenlage eines Druckstücks (32) an der Ventilnadel (10) anliegt. Das Druckstück (32) ist an seiner Außenmantelfläche zylindrisch ausgebildet und ist in einer ortsfest im Gehäuse angeordneten Führungshülse (36) geführt (Fig. 1).

Figure 00000001
Fuel injection valve for internal combustion engines with a housing (1) in which a piston-shaped valve needle (10) is arranged so as to be longitudinally displaceable, which by means of its longitudinal movement controls at least one injection opening (16) with the end on the combustion chamber side. A valve piston (30) is arranged in a piston bore (26) formed in the housing (1) and can be displaced longitudinally at least approximately coaxially with the valve needle (10) and which bears against the valve needle (10) with the interposition of a pressure piece (32). The pressure piece (32) is cylindrical on its outer surface and is guided in a guide sleeve (36) arranged in a stationary manner in the housing (FIG. 1).
Figure 00000001
EP02006852A 2001-07-04 2002-03-26 Fuel injector for internal combustion engines Withdrawn EP1273790A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001132450 DE10132450B4 (en) 2001-07-04 2001-07-04 Fuel injection valve for internal combustion engines
DE10132450 2001-07-04

Publications (2)

Publication Number Publication Date
EP1273790A2 EP1273790A2 (en) 2003-01-08
EP1273790A3 true EP1273790A3 (en) 2004-08-18

Family

ID=7690605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02006852A Withdrawn EP1273790A3 (en) 2001-07-04 2002-03-26 Fuel injector for internal combustion engines

Country Status (3)

Country Link
EP (1) EP1273790A3 (en)
JP (1) JP2003035233A (en)
DE (1) DE10132450B4 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1851427B1 (en) * 2005-02-22 2011-05-11 Continental Automotive Systems US, Inc. Common rail injector with active needle closing device
CN104265533B (en) * 2014-07-31 2016-08-24 中国第一汽车股份有限公司无锡油泵油嘴研究所 A kind of common-rail injector
CN104806399B (en) * 2015-04-03 2017-06-06 西安交通大学 The high pressure common rail injector control valve that edge cam rotating servo motor directly drives
JP6451883B2 (en) * 2018-02-05 2019-01-16 株式会社デンソー Fuel injection valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0690223A2 (en) * 1994-07-01 1996-01-03 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Device for adjusting the travel of a fuel injector shutter
DE19827267A1 (en) * 1998-06-18 1999-12-23 Bosch Gmbh Robert Fuel injection valve for high pressure injection with improved control of the fuel supply

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH494346A (en) * 1968-07-31 1970-07-31 Sulzer Ag Electromagnetically controlled fuel injection valve of a reciprocating internal combustion engine
DE8104272U1 (en) * 1981-02-17 1981-08-06 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION NOZZLE
FR2528914A1 (en) * 1982-06-18 1983-12-23 Semt Fuel injector for IC engine - has injection control needle with push rod engaged by closing spring
DE19946766C2 (en) * 1999-09-29 2001-07-26 Siemens Ag Injector for an internal combustion engine with direct injection
DE10006111A1 (en) * 2000-02-11 2001-08-30 Bosch Gmbh Robert Fuel injector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0690223A2 (en) * 1994-07-01 1996-01-03 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Device for adjusting the travel of a fuel injector shutter
DE19827267A1 (en) * 1998-06-18 1999-12-23 Bosch Gmbh Robert Fuel injection valve for high pressure injection with improved control of the fuel supply

Also Published As

Publication number Publication date
DE10132450A1 (en) 2003-01-23
EP1273790A2 (en) 2003-01-08
JP2003035233A (en) 2003-02-07
DE10132450B4 (en) 2010-02-11

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