EP0151562A3 - Fuel injector - Google Patents

Fuel injector Download PDF

Info

Publication number
EP0151562A3
EP0151562A3 EP85890012A EP85890012A EP0151562A3 EP 0151562 A3 EP0151562 A3 EP 0151562A3 EP 85890012 A EP85890012 A EP 85890012A EP 85890012 A EP85890012 A EP 85890012A EP 0151562 A3 EP0151562 A3 EP 0151562A3
Authority
EP
European Patent Office
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.)
Granted
Application number
EP85890012A
Other languages
German (de)
Other versions
EP0151562A2 (en
EP0151562B1 (en
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 AG
Original Assignee
Friedmann and Maier AG
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 Friedmann and Maier AG filed Critical Friedmann and Maier AG
Publication of EP0151562A2 publication Critical patent/EP0151562A2/en
Publication of EP0151562A3 publication Critical patent/EP0151562A3/en
Application granted granted Critical
Publication of EP0151562B1 publication Critical patent/EP0151562B1/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.
EP85890012A 1984-01-20 1985-01-18 Fuel injector Expired EP0151562B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT198/84 1984-01-20
AT0019884A AT397129B (en) 1984-01-20 1984-01-20 FUEL INJECTION NOZZLE

Publications (3)

Publication Number Publication Date
EP0151562A2 EP0151562A2 (en) 1985-08-14
EP0151562A3 true EP0151562A3 (en) 1985-11-27
EP0151562B1 EP0151562B1 (en) 1989-10-11

Family

ID=3484081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890012A Expired EP0151562B1 (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

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE1252001B (en) * 1967-10-12 Robert Bosch Gmbh, Stuttgart Fuel injection valve for pre-injection and main injection
GB2093117A (en) * 1981-02-17 1982-08-25 Bosch Gmbh Robert A combustion engine fuel injection nozzle
GB2105406A (en) * 1981-09-05 1983-03-23 Lucas Ind Plc Fuel injection nozzle systems for compression ignition engines
DE3217289A1 (en) * 1981-10-29 1983-05-11 Kabushiki Kaisha Komatsu Seisakusho, Tokyo INJECTION NOZZLE
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS5818552A (en) * 1981-07-23 1983-02-03 Diesel Kiki Co Ltd Unit injector

Patent Citations (7)

* 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
GB2093117A (en) * 1981-02-17 1982-08-25 Bosch Gmbh Robert A combustion engine fuel injection nozzle
GB2105406A (en) * 1981-09-05 1983-03-23 Lucas Ind Plc Fuel injection nozzle systems for compression ignition engines
DE3217289A1 (en) * 1981-10-29 1983-05-11 Kabushiki Kaisha Komatsu Seisakusho, Tokyo INJECTION NOZZLE
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 95, 21. April 1983, Seite (M-209) (1240); & JP-A-58-018 552 (DIESEL KIKI) 03-02-1983 *

Also Published As

Publication number Publication date
EP0151562A2 (en) 1985-08-14
ATE47202T1 (en) 1989-10-15
AT397129B (en) 1994-02-25
DE3573638D1 (en) 1989-11-16
ATA19884A (en) 1993-06-15
EP0151562B1 (en) 1989-10-11

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