ATE425355T1 - FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES - Google Patents

FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES

Info

Publication number
ATE425355T1
ATE425355T1 AT04798204T AT04798204T ATE425355T1 AT E425355 T1 ATE425355 T1 AT E425355T1 AT 04798204 T AT04798204 T AT 04798204T AT 04798204 T AT04798204 T AT 04798204T AT E425355 T1 ATE425355 T1 AT E425355T1
Authority
AT
Austria
Prior art keywords
throttle
valve needle
valve
fuel
fuel injection
Prior art date
Application number
AT04798204T
Other languages
German (de)
Inventor
Patrick Mattes
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Application granted granted Critical
Publication of ATE425355T1 publication Critical patent/ATE425355T1/en

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
    • 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
    • F02M61/16—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
    • F02M61/1873—Valve seats or member ends having circumferential grooves or ridges, e.g. toroidal

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

The fuel injection valve comprises at least one valve body (1) wherein a piston-shaped valve needle (5) is arranged in a bore (3), cooperating with a valve seat (7). A throttle bundle (34) is embodied on the valve needle (5) and is arranged in a throttle section (36) when the valve needle (5) rests on the valve seat (7). When the valve needle (4) is opened in a lifting movement, said throttle bundle emerges from the throttle section (36), whereupon a flow cross-section (14) is controlled in such a way that fuel can flow between the valve needle (5) and the wall of the bore (3) to the injector openings (11). A fuel channel (42), which is formed in the valve needle, is provided with at least one inlet (43) located downstream from the throttle bundle (34) and an outlet (48), enabling fuel to be also supplied to the injector openings (11) via the fuel channel (42).
AT04798204T 2004-01-15 2004-11-15 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES ATE425355T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004002084A DE102004002084A1 (en) 2004-01-15 2004-01-15 Fuel injection valve for internal combustion engines

Publications (1)

Publication Number Publication Date
ATE425355T1 true ATE425355T1 (en) 2009-03-15

Family

ID=34716562

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04798204T ATE425355T1 (en) 2004-01-15 2004-11-15 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES

Country Status (4)

Country Link
EP (1) EP1709321B1 (en)
AT (1) ATE425355T1 (en)
DE (2) DE102004002084A1 (en)
WO (1) WO2005068824A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008017614A1 (en) * 2006-08-09 2008-02-14 Siemens Aktiengesellschaft Fuel injection device for an internal combustion engine
DE102008047385A1 (en) * 2008-09-16 2010-03-25 Continental Automotive Gmbh Nozzle assembly for fuel injector, particularly common rail fuel injector of internal combustion engine, has injection needles guided into nozzle bodies in displacing manner
DE102015219376A1 (en) 2015-10-07 2017-04-13 Robert Bosch Gmbh Nozzle assembly for a fuel injector and fuel injector
CN106014738A (en) * 2016-07-12 2016-10-12 江西汇尔油泵油嘴有限公司 Obstructing type oil injection method and oil injection nozzle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH278720A (en) * 1948-12-30 1951-10-31 Bischof Bernhard Injection nozzle for internal combustion engines.
JPS5996475A (en) * 1982-11-25 1984-06-02 Daihatsu Motor Co Ltd Fuel injection nozzle
DE19818200A1 (en) 1998-04-23 1999-10-28 Bosch Gmbh Robert Fuel injection valve for internal combustion engine
DE10148350A1 (en) * 2001-09-29 2003-04-24 Bosch Gmbh Robert Fuel injector, for a common rail direct fuel injection at an IC motor, has a fuel flow channel through the valve unit, opening into a flow zone directly upstream of the valve seat

Also Published As

Publication number Publication date
DE102004002084A1 (en) 2005-08-04
EP1709321B1 (en) 2009-03-11
EP1709321A1 (en) 2006-10-11
WO2005068824A1 (en) 2005-07-28
DE502004009164D1 (en) 2009-04-23

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee