EP1164283A3 - A fuel injection valve - Google Patents

A fuel injection valve Download PDF

Info

Publication number
EP1164283A3
EP1164283A3 EP01114379A EP01114379A EP1164283A3 EP 1164283 A3 EP1164283 A3 EP 1164283A3 EP 01114379 A EP01114379 A EP 01114379A EP 01114379 A EP01114379 A EP 01114379A EP 1164283 A3 EP1164283 A3 EP 1164283A3
Authority
EP
European Patent Office
Prior art keywords
leak
passage
chamber
fuel injection
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.)
Granted
Application number
EP01114379A
Other languages
German (de)
French (fr)
Other versions
EP1164283A2 (en
EP1164283B1 (en
Inventor
Yoshimasa c/o Toyota Jidosha K. K. Watanabe
Kazuhiro c/o Toyota Jidosha K. K. Omae
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP1164283A2 publication Critical patent/EP1164283A2/en
Publication of EP1164283A3 publication Critical patent/EP1164283A3/en
Application granted granted Critical
Publication of EP1164283B1 publication Critical patent/EP1164283B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00Other 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
    • F02M63/0012Valves
    • F02M63/0014Valves characterised by the valve actuating means
    • F02M63/0015Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/12Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02Fuel-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
    • F02M47/027Electrically actuated valves draining the chamber to release the closing pressure

Abstract

A fuel injection valve (10) is provided with a valve needle (105) which is urged by the pressure of fuel in a control chamber (109) to a closed position where the valve needle (105) closes the fuel injection hole (103). A supply passage (209) with a throttled portion connects a high pressure fuel passage (123) to the control chamber (109). The control chamber (109) is connected to a leak chamber (130) by two return passages (201,203). The leak chamber (130) has a leak passage (117) for spilling fuel in the leak chamber (130) to the outside of the fuel injection valve (10). A control valve (300) is provided in the leak chamber (130). The control valve (300) is capable of taking any of a closed position where the leak passage (117) is closed, a medium lift position where the leak passage (117) and two return passages (201,203) are opened, and a full lift position where the leak passage (117) and only one return passage (201)are opened. In the closing position of the control valve (300), the pressure in the control chamber (109) is high and the valve needle (105) is kept at the closing position. In the medium lift position and the full lift position, fuel in the control chamber (109) is spilled through the leak passage (117) via return passages (201,203) and the leak chamber (130). This causes the valve needle (105) to move to the position where the fuel injection hole (103) is opened. However, at the full lift position, since only one return passage (201) is opened, the rate of the pressure drop in the control chamber (109) is smaller and the speed of the lift of the valve needle (105) is lower. Therefore, the fuel injection characteristics can be changed by switching the position of the control valve (300) between the medium lift position and the full lift position during fuel injection.
EP20010114379 2000-06-15 2001-06-13 A fuel injection valve Expired - Lifetime EP1164283B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000184584 2000-06-15
JP2000184584A JP3551898B2 (en) 2000-06-15 2000-06-15 Fuel injection valve

Publications (3)

Publication Number Publication Date
EP1164283A2 EP1164283A2 (en) 2001-12-19
EP1164283A3 true EP1164283A3 (en) 2003-11-05
EP1164283B1 EP1164283B1 (en) 2006-12-13

Family

ID=18685003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010114379 Expired - Lifetime EP1164283B1 (en) 2000-06-15 2001-06-13 A fuel injection valve

Country Status (4)

Country Link
EP (1) EP1164283B1 (en)
JP (1) JP3551898B2 (en)
DE (1) DE60125098T2 (en)
ES (1) ES2277601T3 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60015218T2 (en) * 1999-04-01 2006-02-16 Delphi Technologies, Inc., Troy Fuel injector
DE10131618A1 (en) * 2001-06-29 2003-01-23 Bosch Gmbh Robert Fuel injector with switchable control room inlet
DE10131640A1 (en) * 2001-06-29 2003-01-16 Bosch Gmbh Robert Fuel injector with injection course shaping through switchable throttle elements
DE10131619A1 (en) * 2001-06-29 2003-01-23 Bosch Gmbh Robert Fuel injector with injection course shaping
EP1527273A1 (en) * 2002-07-29 2005-05-04 Robert Bosch Gmbh Fuel injector with and without pressure amplification with a controllable needle speed and method for the control thereof
KR20040017596A (en) * 2002-08-22 2004-02-27 현대자동차주식회사 Injector for preventing fuel leaking in diesel engine
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
WO2004051071A1 (en) * 2002-12-05 2004-06-17 Robert Bosch Gmbh Fuel injection device comprising a 3/3-way control valve for forming the injection process
JP2006257874A (en) 2004-04-30 2006-09-28 Denso Corp Injector
FR2894631A1 (en) * 2005-12-13 2007-06-15 Renault Sas Fuel injector, especially for diesel engines, comprises a needle valve moving inside a cylinder at a speed which can be varied by an electromagnet and a switch whatever its position in the cylinder
DE102005060274A1 (en) * 2005-12-16 2007-06-21 Robert Bosch Gmbh Fuel injector
JP2007205324A (en) * 2006-02-06 2007-08-16 Denso Corp Fuel injection valve
DE102006009071A1 (en) * 2006-02-28 2007-08-30 Robert Bosch Gmbh Fuel injection valve for self-igniting internal combustion engines comprises a valve with a spring sleeve partially enclosing a bolt section of a valve bolt
DE102006054064A1 (en) * 2006-11-16 2008-05-21 Robert Bosch Gmbh fuel injector
JP6130280B2 (en) 2013-09-25 2017-05-17 日立オートモティブシステムズ株式会社 Drive device for fuel injection device
DE102013112752A1 (en) * 2013-11-19 2015-05-21 Denso Corporation fuel injector
DE102014211287A1 (en) * 2014-06-12 2015-12-17 Engineering Center Steyr Gmbh & Co. Kg Fluid injection device for an internal combustion engine
JP6683143B2 (en) * 2016-11-14 2020-04-15 株式会社デンソー Fuel injector
JP6988350B2 (en) * 2017-10-06 2022-01-05 株式会社デンソー Fuel injection device
CN116181537B (en) * 2023-02-08 2024-01-23 钧风电控科技(泰州)有限责任公司 Electromagnetic valve sinking offset double-oil-inlet-channel oil sprayer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0571438A (en) * 1991-09-11 1993-03-23 Nippondenso Co Ltd Fuel injector
US5685483A (en) * 1994-06-06 1997-11-11 Ganser-Hydromag Fuel injection valve for internal combustion engines
US5687693A (en) * 1994-07-29 1997-11-18 Caterpillar Inc. Hydraulically-actuated fuel injector with direct control needle valve
US5727525A (en) * 1995-10-03 1998-03-17 Nippon Soken, Inc. Accumulator fuel injection system
WO1999015778A1 (en) * 1997-09-25 1999-04-01 Robert Bosch Gmbh Fuel injection valve
WO1999061779A1 (en) * 1998-05-28 1999-12-02 Siemens Aktiengesellschaft Fuel injection valve for internal combustion engines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0571438A (en) * 1991-09-11 1993-03-23 Nippondenso Co Ltd Fuel injector
US5685483A (en) * 1994-06-06 1997-11-11 Ganser-Hydromag Fuel injection valve for internal combustion engines
US5687693A (en) * 1994-07-29 1997-11-18 Caterpillar Inc. Hydraulically-actuated fuel injector with direct control needle valve
US5727525A (en) * 1995-10-03 1998-03-17 Nippon Soken, Inc. Accumulator fuel injection system
WO1999015778A1 (en) * 1997-09-25 1999-04-01 Robert Bosch Gmbh Fuel injection valve
WO1999061779A1 (en) * 1998-05-28 1999-12-02 Siemens Aktiengesellschaft Fuel injection valve for internal combustion engines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 392 (M - 1450) 22 July 1993 (1993-07-22) *

Also Published As

Publication number Publication date
ES2277601T3 (en) 2007-07-16
EP1164283A2 (en) 2001-12-19
JP3551898B2 (en) 2004-08-11
DE60125098T2 (en) 2007-06-28
DE60125098D1 (en) 2007-01-25
EP1164283B1 (en) 2006-12-13
JP2001355533A (en) 2001-12-26

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