DE3788139D1 - Fuel injector. - Google Patents

Fuel injector.

Info

Publication number
DE3788139D1
DE3788139D1 DE90103656T DE3788139T DE3788139D1 DE 3788139 D1 DE3788139 D1 DE 3788139D1 DE 90103656 T DE90103656 T DE 90103656T DE 3788139 T DE3788139 T DE 3788139T DE 3788139 D1 DE3788139 D1 DE 3788139D1
Authority
DE
Germany
Prior art keywords
valve
needle
valve needle
toroid
section
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.)
Expired - Fee Related
Application number
DE90103656T
Other languages
German (de)
Inventor
Waldemar Hans
Wilhelm Kind
Manfred Kirchner
Siegfried Werner
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 DE90103656T priority Critical patent/DE3788139D1/en
Application granted granted Critical
Publication of DE3788139D1 publication Critical patent/DE3788139D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02M61/04—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
    • F02M61/06—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 the valves being furnished at seated ends with pintle or plug shaped extensions
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0675—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • F02M51/0678—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
    • 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
    • F02M61/1853—Orifice plates

Abstract

The fuel injection valve has a ferromagnetic valve housing containing a magnetic coil surrounding a core to which the valve armature is attached. The valve armature supports a valve needle (27) cooperating with an annular valve seat (48). The seal between the valve needle (27) and the valve seat (48) is provided by a rounded surface (90) defined by a toroid (94) with a circular or elliptical cross-section in the outer surface of the valve needle (27). Oref. the toroid (94) has an elliptical cross-section with its major axis parallel to the longitudinal axis of the valve needle (27).
DE90103656T 1986-05-31 1987-05-27 Fuel injector. Expired - Fee Related DE3788139D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE90103656T DE3788139D1 (en) 1986-05-31 1987-05-27 Fuel injector.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3618413 1986-05-31
DE3710467A DE3710467C2 (en) 1986-05-31 1987-03-30 Fuel injector
DE90103656T DE3788139D1 (en) 1986-05-31 1987-05-27 Fuel injector.

Publications (1)

Publication Number Publication Date
DE3788139D1 true DE3788139D1 (en) 1993-12-16

Family

ID=6302075

Family Applications (3)

Application Number Title Priority Date Filing Date
DE3710467A Expired - Fee Related DE3710467C2 (en) 1986-03-31 1987-03-30 Fuel injector
DE8787903254T Expired - Lifetime DE3769150D1 (en) 1986-05-31 1987-05-27 FUEL INJECTION VALVE.
DE90103656T Expired - Fee Related DE3788139D1 (en) 1986-05-31 1987-05-27 Fuel injector.

Family Applications Before (2)

Application Number Title Priority Date Filing Date
DE3710467A Expired - Fee Related DE3710467C2 (en) 1986-03-31 1987-03-30 Fuel injector
DE8787903254T Expired - Lifetime DE3769150D1 (en) 1986-05-31 1987-05-27 FUEL INJECTION VALVE.

Country Status (3)

Country Link
KR (1) KR940011344B1 (en)
AT (1) ATE62323T1 (en)
DE (3) DE3710467C2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723698C2 (en) * 1987-07-17 1995-04-27 Bosch Gmbh Robert Fuel injector and method for adjusting it
DE3810826A1 (en) * 1988-03-30 1989-10-12 Pierburg Gmbh Solenoid injection valve for internal combustion engines
DE3841142C2 (en) * 1988-12-07 1994-09-29 Bosch Gmbh Robert Injector
IT223984Z2 (en) * 1990-01-17 1995-10-05 Weber Srl VALVE OF A POWER SUPPLY OF AN INTERNAL COMBUSTION ENGINE
US5241938A (en) * 1990-03-14 1993-09-07 Aisan Kogyo Kabushiki Kaisha Injector with assist air passage for atomizing fuel
DE4025945C2 (en) * 1990-08-16 1998-10-08 Bosch Gmbh Robert Method of adjusting a fuel injector and fuel injector
DE19527049A1 (en) * 1995-07-25 1997-01-30 Bosch Gmbh Robert Fuel injector
DE19802883B4 (en) * 1998-01-27 2008-02-28 Brand, Wolfgang injection
DE10103051B4 (en) * 2001-01-24 2006-07-27 Robert Bosch Gmbh Fuel injector
DE10124744A1 (en) 2001-05-21 2003-01-23 Bosch Gmbh Robert Fuel injector
DE10150712A1 (en) 2001-10-13 2003-04-17 Bosch Gmbh Robert Fuel injection valve has annular sealing seat as part of valve seat surface with gradual concave curve
DE102006044080B4 (en) 2006-09-20 2023-10-12 Robert Bosch Gmbh Method for operating a reagent metering valve and device for carrying out the method
DE102007044807A1 (en) 2007-09-20 2009-04-09 Robert Bosch Gmbh Method for operating a metering valve and device for carrying out the method
EP2487361A1 (en) * 2011-02-14 2012-08-15 Caterpillar Motoren GmbH & Co. KG Nozzle needle for a fuel injector and fuel injector
US9200532B2 (en) * 2012-09-13 2015-12-01 Honeywell International Inc. Turbine wastegate
JP6511925B2 (en) * 2014-08-26 2019-05-15 株式会社デンソー Fuel injection valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212352B (en) * 1960-02-20 1966-03-10 Orange G M B H L Fuel injection valve with fuel-controlled valve needle
CA1124146A (en) * 1978-09-08 1982-05-25 William B. Claxton Injector valve with contoured valve seat and needle valve interface
DE3301501A1 (en) * 1982-01-28 1983-08-04 General Motors Corp., Detroit, Mich. Electromagnetic fuel injection device
US4564145A (en) * 1982-08-04 1986-01-14 Aisan Kogyo Kabushiki Kaisha Electromagnetic fuel injector

Also Published As

Publication number Publication date
KR940011344B1 (en) 1994-12-05
KR880701326A (en) 1988-07-26
ATE62323T1 (en) 1991-04-15
DE3710467A1 (en) 1987-12-03
DE3710467C2 (en) 1994-05-11
DE3769150D1 (en) 1991-05-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee