EP1286043A3 - Accumulator type injector for a fuel injection system - Google Patents

Accumulator type injector for a fuel injection system Download PDF

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Publication number
EP1286043A3
EP1286043A3 EP02016523A EP02016523A EP1286043A3 EP 1286043 A3 EP1286043 A3 EP 1286043A3 EP 02016523 A EP02016523 A EP 02016523A EP 02016523 A EP02016523 A EP 02016523A EP 1286043 A3 EP1286043 A3 EP 1286043A3
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection system
type injector
accumulator type
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.)
Withdrawn
Application number
EP02016523A
Other languages
German (de)
French (fr)
Other versions
EP1286043A2 (en
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 EP1286043A2 publication Critical patent/EP1286043A2/en
Publication of EP1286043A3 publication Critical patent/EP1286043A3/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Withdrawn legal-status Critical Current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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid 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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements

Abstract

Es wird ein Injektor für ein Common-Rail-Kraftstoffeinspritzsystem vorgeschlagen, bei dem das Öffnen der Düsennadel (5) druckgesteuert erfolgt, während die Düsennadel (5) zwangsweise geschlossen wird, wenn das Steuerventil (23) schließt. Dadurch ergeben sich Vorteile hinsichtlich des Spritzbeginns und des Schließens der Düsennadel (5).

Figure 00000001
An injector for a common rail fuel injection system is proposed, in which the opening of the nozzle needle (5) is pressure-controlled, while the nozzle needle (5) is forcibly closed when the control valve (23) closes. This results in advantages with regard to the start of spraying and the closing of the nozzle needle (5).
Figure 00000001
EP02016523A 2001-08-23 2002-07-24 Accumulator type injector for a fuel injection system Withdrawn EP1286043A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10141221A DE10141221B4 (en) 2001-08-23 2001-08-23 Pressure-stroke controlled injector for fuel injection systems
DE10141221 2001-08-23

Publications (2)

Publication Number Publication Date
EP1286043A2 EP1286043A2 (en) 2003-02-26
EP1286043A3 true EP1286043A3 (en) 2004-05-12

Family

ID=7696294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02016523A Withdrawn EP1286043A3 (en) 2001-08-23 2002-07-24 Accumulator type injector for a fuel injection system

Country Status (4)

Country Link
US (1) US6837450B2 (en)
EP (1) EP1286043A3 (en)
JP (1) JP2003120458A (en)
DE (1) DE10141221B4 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7278593B2 (en) * 2002-09-25 2007-10-09 Caterpillar Inc. Common rail fuel injector
DE10254749A1 (en) * 2002-11-23 2004-06-17 Robert Bosch Gmbh Fuel injection device with a 3/3-way control valve for injection course shaping
JP4019934B2 (en) * 2002-12-26 2007-12-12 株式会社デンソー Control valve and fuel injection valve
US7111614B1 (en) * 2005-08-29 2006-09-26 Caterpillar Inc. Single fluid injector with rate shaping capability
JP4428357B2 (en) * 2006-04-03 2010-03-10 株式会社デンソー Fuel injection valve
CN103670851B (en) * 2013-11-28 2015-10-28 上海交通大学 Be applicable to two high-pressure oil pipe oil sprayers of dimethyl ether fuel
US9856841B2 (en) * 2014-05-30 2018-01-02 Avl Powertrain Engineering, Inc. Fuel injector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19963367A1 (en) * 1999-12-28 2001-07-12 Bosch Gmbh Robert Common rail injector
US20020020765A1 (en) * 2000-06-29 2002-02-21 Friedrich Boecking Pressure-controlled injector with controlled nozzle needle
WO2002036958A1 (en) * 2000-10-31 2002-05-10 Robert Bosch Gmbh Lift and/or pressure-controlled injector with a double slide
US20020109015A1 (en) * 2000-11-13 2002-08-15 Friedrich Boecking Injector loaded from collecting chamber and provided with cascade-shaped control device
EP1236883A2 (en) * 2001-03-02 2002-09-04 Delphi Technologies, Inc. Fuel system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD102772A1 (en) * 1973-01-08 1973-12-20
US4080942A (en) * 1976-06-23 1978-03-28 The United States Of America As Represented By The Secretary Of The Army Metering fuel by compressibility
US4129254A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
US4503825A (en) * 1982-04-02 1985-03-12 Bendix Corporation Diesel fuel system
DE19706469A1 (en) * 1997-02-19 1998-08-27 Daimler Benz Ag Accumulator injection system for a multi-cylinder internal combustion engine with solenoid-controlled fuel injection valves
DE29717649U1 (en) * 1997-10-02 1997-11-20 Fev Motorentech Gmbh & Co Kg Directly controlled injection valve, in particular fuel injection valve
US5884611A (en) * 1997-10-14 1999-03-23 Cummins Engine Company, Inc. Effervescent injector for diesel engines
JPH11280588A (en) * 1998-03-31 1999-10-12 Denso Corp Fuel injection nozzle
US6109542A (en) * 1998-09-21 2000-08-29 Cummins Engine Company, Inc. Servo-controlled fuel injector with leakage limiting device
JP2001140726A (en) * 1998-12-09 2001-05-22 Denso Corp Valve device and fuel injector using it
GB9905896D0 (en) * 1999-03-16 1999-05-05 Lucas Ind Plc Fuel injector arrangement
DE19923421C2 (en) * 1999-05-21 2003-03-27 Bosch Gmbh Robert injector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19963367A1 (en) * 1999-12-28 2001-07-12 Bosch Gmbh Robert Common rail injector
US20020020765A1 (en) * 2000-06-29 2002-02-21 Friedrich Boecking Pressure-controlled injector with controlled nozzle needle
WO2002036958A1 (en) * 2000-10-31 2002-05-10 Robert Bosch Gmbh Lift and/or pressure-controlled injector with a double slide
US20020109015A1 (en) * 2000-11-13 2002-08-15 Friedrich Boecking Injector loaded from collecting chamber and provided with cascade-shaped control device
EP1236883A2 (en) * 2001-03-02 2002-09-04 Delphi Technologies, Inc. Fuel system

Also Published As

Publication number Publication date
DE10141221A1 (en) 2003-03-20
US6837450B2 (en) 2005-01-04
JP2003120458A (en) 2003-04-23
DE10141221B4 (en) 2009-07-30
US20030052187A1 (en) 2003-03-20
EP1286043A2 (en) 2003-02-26

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