DE3573638D1 - Fuel injector - Google Patents

Fuel injector

Info

Publication number
DE3573638D1
DE3573638D1 DE8585890012T DE3573638T DE3573638D1 DE 3573638 D1 DE3573638 D1 DE 3573638D1 DE 8585890012 T DE8585890012 T DE 8585890012T DE 3573638 T DE3573638 T DE 3573638T DE 3573638 D1 DE3573638 D1 DE 3573638D1
Authority
DE
Germany
Prior art keywords
chamber
plunger
valve member
valve
fuel
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
Application number
DE8585890012T
Other languages
German (de)
Inventor
Jaroslaw Dipl Ing Hlousek
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
Application granted granted Critical
Publication of DE3573638D1 publication Critical patent/DE3573638D1/en
Expired 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/462—Delivery valves

Abstract

1. Fuel injection nozzle comprising a valve member which is urged against a valve seat in a valve chamber by means of a valve member spring (14) and the end of which remote from the valve seat extends into a chamber (15) that can be filled with fuel and accommodates the valve member spring (14), and a solenoid valve (8) for controlling the injection which in its open position connects the pressure chamber (9) of an injection pump with a spill conduit, characterised in that in a pumping chamber (31) of the fuel injection nozzle a plunger (13) is provided, and the pumping chamber (31) is connected to a conduit leading from the pressure chamber (9) of the injection nozzle to the valve chamber, and the end of the plunger (13) extending remotely from the pumping chamber rests upon the valve member spring (14), that the fuel pressure in said conduit acts upon the other end of the plunger (13), that the active cross-sectional area of the plunger (13) is greater than the cross-sectional area of the valve member, and that within the whole range of speed and load the plunger (13) performs its working stroke against the force of the spring before, at the beginning of the injection, the valve member is being lifted.
DE8585890012T 1984-01-20 1985-01-18 Fuel injector Expired DE3573638D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0019884A AT397129B (en) 1984-01-20 1984-01-20 FUEL INJECTION NOZZLE

Publications (1)

Publication Number Publication Date
DE3573638D1 true DE3573638D1 (en) 1989-11-16

Family

ID=3484081

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585890012T Expired DE3573638D1 (en) 1984-01-20 1985-01-18 Fuel injector

Country Status (3)

Country Link
EP (1) EP0151562B1 (en)
AT (2) AT397129B (en)
DE (1) DE3573638D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741478A (en) * 1986-11-28 1988-05-03 General Motors Corporation Diesel unit fuel injector with spill assist injection needle valve closure
US4917068A (en) * 1987-12-29 1990-04-17 Toyoto Jidosh Kabushiki Kaisha Unit injector for an engine
GB8828157D0 (en) * 1988-12-02 1989-01-05 Lucas Ind Plc Fuel injection nozzles
DE3841462C2 (en) * 1988-12-09 1996-05-30 Kloeckner Humboldt Deutz Ag Fuel injector
DE4204435A1 (en) * 1992-02-14 1993-08-19 Daimler Benz Ag Fuel injection pump for IC engine - has magnetostrictive drive with electronic control as well as separate pump for each cylinder
GB9804110D0 (en) * 1998-02-27 1998-04-22 Lucas Ind Plc Fuel injector

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1252001B (en) * 1967-10-12 Robert Bosch Gmbh, Stuttgart Fuel injection valve for pre-injection and main injection
DE686943C (en) * 1936-09-22 1940-01-19 Kloeckner Humboldt Deutz Akt G Fuel injection device for internal combustion engines
DE879936C (en) * 1948-03-08 1953-06-18 Cav Ltd Fuel injector for internal combustion engines
CH495504A (en) * 1968-08-28 1970-08-31 Sopromi Soc Proc Modern Inject Fuel injection valve with electromagnetic actuation
DE2558699A1 (en) * 1975-12-24 1977-07-14 Bosch Gmbh Robert PUMP JET FOR FUEL INJECTION IN COMBUSTION ENGINE
US4129256A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
US4129254A (en) * 1977-09-12 1978-12-12 General Motors Corporation Electromagnetic unit fuel injector
JPS5655769U (en) * 1979-10-05 1981-05-14
DE3105671A1 (en) * 1981-02-17 1982-09-02 Robert Bosch Gmbh, 7000 Stuttgart "FUEL INJECTION NOZZLE"
JPS5818552A (en) * 1981-07-23 1983-02-03 Diesel Kiki Co Ltd Unit injector
GB2105406B (en) * 1981-09-05 1985-02-27 Lucas Ind Plc Fuel injection nozzle systems for compression ignition engines
JPS5866164U (en) * 1981-10-29 1983-05-06 株式会社小松製作所 fuel injector
DE3409924A1 (en) * 1983-03-31 1984-10-11 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH, Prof. Dr.Dr.h.c. Hans List, Graz NOZZLE HOLDER FOR A FUEL INJECTION NOZZLE

Also Published As

Publication number Publication date
ATE47202T1 (en) 1989-10-15
EP0151562B1 (en) 1989-10-11
EP0151562A3 (en) 1985-11-27
AT397129B (en) 1994-02-25
EP0151562A2 (en) 1985-08-14
ATA19884A (en) 1993-06-15

Similar Documents

Publication Publication Date Title
US4408718A (en) Electromagnetic unit fuel injector
EP0393590A2 (en) Fuel injection device for diesel engines
ES8407158A1 (en) Double dump single solenoid unit injector.
US4969600A (en) Fuel injection nozzle
US6012430A (en) Fuel injector
GB2274682A (en) Direct injection engine solenoid injector system
GB2201753A (en) Piezoelectric fuel injection control valve
GB1391327A (en) Fuel injection devices for internal combustion engines
EP0385397A3 (en) Diesel engine electromagnetic fuel injector
SU1426464A3 (en) Fuel injection device
EP0384882A3 (en) Rate control in accumulator type fuel injectors
US4941612A (en) Unit fuel injector
EP0879954A3 (en) Common rail injector
EP0770174A1 (en) Fuel injection rate shaping apparatus for a unit injector
US5004154A (en) High pressure fuel injection device for engine
DE3573638D1 (en) Fuel injector
GB1304450A (en)
EP1081373A3 (en) Fuel injector
JPS6111447A (en) Fuel injection valve
EP0736687B1 (en) Fuel pumping apparatus
GB1178486A (en) Improvements in and relating to Fuel Injection Valves
GB1530725A (en) Fuel injection pump
US5464158A (en) Fuel injection nozzle for internal combustion engines
GB2156952A (en) Fluid control valve
KR19980070460A (en) Injector

Legal Events

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