DE10346212A1 - Fuel injection valve for IC engines has fuel feed channel with throttle to form smallest flow profile from the feed channel to injection apertures - Google Patents

Fuel injection valve for IC engines has fuel feed channel with throttle to form smallest flow profile from the feed channel to injection apertures Download PDF

Info

Publication number
DE10346212A1
DE10346212A1 DE2003146212 DE10346212A DE10346212A1 DE 10346212 A1 DE10346212 A1 DE 10346212A1 DE 2003146212 DE2003146212 DE 2003146212 DE 10346212 A DE10346212 A DE 10346212A DE 10346212 A1 DE10346212 A1 DE 10346212A1
Authority
DE
Germany
Prior art keywords
feed channel
fuel
throttle
flow profile
valve
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Withdrawn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
DE2003146212
Other languages
German (de)
Inventor
Markus Ohnmacht
Wolfgang Stoecklein
Holger Rapp
Andreas Koeninger
Andreas Rau
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
Priority to DE2003146212 priority Critical patent/DE10346212A1/en
Priority to PCT/DE2004/001811 priority patent/WO2005045233A1/en
Publication of DE10346212A1 publication Critical patent/DE10346212A1/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Withdrawn legal-status Critical Current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
    • 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
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • 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
    • 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
    • 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
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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
    • F02M2547/001—Control chambers formed by movable sleeves
    • 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

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 valve has a housing (1) with intake chamber (12) with a valve needle (18) and a feed channel (10) to supply it with fuel. The channel has a throttle (30) formed in it. This forms the smallest flow profile of the fuel flow from the feed channel through a ring chamber (15), formed between the intake chamber wall and the valve needle, to injection apertures (22). The flow section in a valve needle flow profile section is dimensioned, so that when the valve needle impacts on the valve seat (20), the kinetic energy of the fuel generates only such pressure oscillations in the ring chamber, which do not cause wear on the valve seat.
DE2003146212 2003-10-06 2003-10-06 Fuel injection valve for IC engines has fuel feed channel with throttle to form smallest flow profile from the feed channel to injection apertures Withdrawn DE10346212A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2003146212 DE10346212A1 (en) 2003-10-06 2003-10-06 Fuel injection valve for IC engines has fuel feed channel with throttle to form smallest flow profile from the feed channel to injection apertures
PCT/DE2004/001811 WO2005045233A1 (en) 2003-10-06 2004-08-13 Fuel injection valve for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2003146212 DE10346212A1 (en) 2003-10-06 2003-10-06 Fuel injection valve for IC engines has fuel feed channel with throttle to form smallest flow profile from the feed channel to injection apertures

Publications (1)

Publication Number Publication Date
DE10346212A1 true DE10346212A1 (en) 2005-04-21

Family

ID=34353326

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2003146212 Withdrawn DE10346212A1 (en) 2003-10-06 2003-10-06 Fuel injection valve for IC engines has fuel feed channel with throttle to form smallest flow profile from the feed channel to injection apertures

Country Status (2)

Country Link
DE (1) DE10346212A1 (en)
WO (1) WO2005045233A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007068517A1 (en) * 2005-12-12 2007-06-21 Robert Bosch Gmbh Fuel injector
EP2218900A1 (en) * 2009-02-16 2010-08-18 Continental Automotive GmbH Valve assembly for an injection valve and injection valve
EP2439398A1 (en) * 2008-06-19 2012-04-11 Robert Bosch GmbH Fuel injector valve
CN115003904A (en) * 2020-01-23 2022-09-02 株式会社电装 Fuel injection valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8448878B2 (en) 2010-11-08 2013-05-28 Caterpillar Inc. Fuel injector with needle control system that includes F, A, Z and E orifices
US8690075B2 (en) * 2011-11-07 2014-04-08 Caterpillar Inc. Fuel injector with needle control system that includes F, A, Z and E orifices

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9709678D0 (en) * 1997-05-14 1997-07-02 Lucas Ind Plc Fuel injector
GB2335000A (en) * 1998-03-05 1999-09-08 Lucas Ind Plc Fuel injector having a restricted fuel flow path provided by a needle valve
GB9810208D0 (en) * 1998-05-13 1998-07-08 Lucas Ind Plc Fuel injector
JP3704957B2 (en) * 1998-07-06 2005-10-12 いすゞ自動車株式会社 Injector
DE10062959A1 (en) * 2000-12-16 2002-06-20 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE10117861A1 (en) * 2001-04-10 2002-10-24 Bosch Gmbh Robert Fuel injector for injecting fuel into internal combustion engine combustion chambers has nozzle needle with at least one guide section and in form of choke point near nozzle seat
DE10149961A1 (en) * 2001-10-10 2003-04-30 Bosch Gmbh Robert Fuel injection device for internal combustion engine, especially common rail injector, has flow path control sections interacting to give defined flow characteristic against time
DE10250722A1 (en) * 2002-10-31 2004-05-13 Robert Bosch Gmbh Valve for controlling liquids with a pressure medium supply

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007068517A1 (en) * 2005-12-12 2007-06-21 Robert Bosch Gmbh Fuel injector
EP2439398A1 (en) * 2008-06-19 2012-04-11 Robert Bosch GmbH Fuel injector valve
EP2218900A1 (en) * 2009-02-16 2010-08-18 Continental Automotive GmbH Valve assembly for an injection valve and injection valve
CN115003904A (en) * 2020-01-23 2022-09-02 株式会社电装 Fuel injection valve

Also Published As

Publication number Publication date
WO2005045233A1 (en) 2005-05-19

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination