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EP0185914A3 - Fuel injection pump for internal combustion engines - Google Patents

Fuel injection pump for internal combustion engines Download PDF

Info

Publication number
EP0185914A3
EP0185914A3 EP85114587A EP85114587A EP0185914A3 EP 0185914 A3 EP0185914 A3 EP 0185914A3 EP 85114587 A EP85114587 A EP 85114587A EP 85114587 A EP85114587 A EP 85114587A EP 0185914 A3 EP0185914 A3 EP 0185914A3
Authority
EP
European Patent Office
Prior art keywords
pump
radial bore
internal combustion
injection
combustion engines
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
EP85114587A
Other languages
German (de)
Other versions
EP0185914A2 (en
EP0185914B1 (en
Inventor
Josef Guntert
Walter Hafele
Helmut Dr. Dipl.-Ing. Tschoke
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 AT85114587T priority Critical patent/ATE50320T1/en
Publication of EP0185914A2 publication Critical patent/EP0185914A2/en
Publication of EP0185914A3 publication Critical patent/EP0185914A3/en
Application granted granted Critical
Publication of EP0185914B1 publication Critical patent/EP0185914B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/26—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movements of pistons relative to their cylinders
    • 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
    • F02M59/361—Valves being actuated mechanically

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A fuel injection pump for internal combustion engines is proposed, in which for normal engine operation the control of the injection quantity and of the beginning and end of supply for injection is effected by means of a control slide which is axially displaceable on the pump piston and in which a radial bore (connecting conduit) controlled by the pump piston is present in the pump cylinder, with which radial bore the pump work chamber can be made to communicate with the suction chamber of the pump. The latest end of supply for the injection is determined in that after a predetermined stroke of the pump piston a relief conduit is arranged to coincide with the radial bore and thereby relieve the pump work chamber. Because the radial bore is only blocked after a pre-stroke has been executed by the pump piston the earliest supply onset also can be controlled with this bore as well.
EP85114587A 1984-12-24 1985-11-16 Fuel injection pump for internal combustion engines Expired - Lifetime EP0185914B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114587T ATE50320T1 (en) 1984-12-24 1985-11-16 FUEL INJECTION PUMP FOR COMBUSTION ENGINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843447374 DE3447374A1 (en) 1984-12-24 1984-12-24 FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES
DE3447374 1984-12-24

Publications (3)

Publication Number Publication Date
EP0185914A2 EP0185914A2 (en) 1986-07-02
EP0185914A3 true EP0185914A3 (en) 1988-01-07
EP0185914B1 EP0185914B1 (en) 1990-02-07

Family

ID=6253878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114587A Expired - Lifetime EP0185914B1 (en) 1984-12-24 1985-11-16 Fuel injection pump for internal combustion engines

Country Status (5)

Country Link
US (1) US4708114A (en)
EP (1) EP0185914B1 (en)
JP (1) JPS61157753A (en)
AT (1) ATE50320T1 (en)
DE (2) DE3447374A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3447375A1 (en) * 1984-12-24 1986-07-03 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES
EP0301222B1 (en) * 1987-07-25 1992-05-06 Robert Bosch Gmbh Fuel injection pump for internal-combustion engines
DE3813320A1 (en) * 1988-04-08 1989-10-19 Voest Alpine Automotive PUMP NOZZLE FOR DIESEL ENGINES
DE3811845A1 (en) * 1988-04-08 1989-10-19 Voest Alpine Automotive PUMPEDUESE FOR DIESEL ENGINES
US5080564A (en) * 1989-02-08 1992-01-14 Diesel Kiki Co., Ltd. Prestroke control device for fuel injection pumps
JP2543729Y2 (en) * 1990-09-13 1997-08-13 三菱自動車工業株式会社 Diesel engine fuel injection system
DE4100093A1 (en) * 1991-01-04 1992-07-09 Bosch Gmbh Robert FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES WITH LOAD AND / OR SPEED-RELATED INJECTION HISTORY
JPH05272429A (en) * 1992-03-25 1993-10-19 Mitsubishi Motors Corp Fuel injector
JPH10281033A (en) * 1997-04-03 1998-10-20 Zexel Corp Spill controller for fuel injection pump
DE102007034036A1 (en) * 2007-07-20 2009-01-22 Robert Bosch Gmbh High-pressure fuel pump with roller tappet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147390A (en) * 1934-04-17 1939-02-14 Provencale De Const Aeronautiq Fuel feed pump
FR1521391A (en) * 1967-01-16 1968-04-19 Mikuni Kogyo Company Ltd Injection pump or similar
DE2146578A1 (en) * 1970-09-18 1972-03-30 Caterpillar Tractor Co., Peoria, 111. (V.StA.) Fuel injection pump with lever adjustable metering bush
EP0185915A2 (en) * 1984-12-24 1986-07-02 Robert Bosch Gmbh Fuel injection pump for internal combustion engines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746443A (en) * 1953-02-20 1956-05-22 Texas Co Fuel injection pump
FR91309E (en) * 1965-11-09 1968-05-24 Inst Francais Du Petrole Double injection device
US3312209A (en) * 1964-11-12 1967-04-04 Bosch Arma Corp Fuel delivery system
DE3017730A1 (en) * 1980-05-09 1981-11-12 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES
DE3018791A1 (en) * 1980-05-16 1981-11-26 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection pump for IC engine - has adjustment for max. fuel setting by axial cylinder displacement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147390A (en) * 1934-04-17 1939-02-14 Provencale De Const Aeronautiq Fuel feed pump
FR1521391A (en) * 1967-01-16 1968-04-19 Mikuni Kogyo Company Ltd Injection pump or similar
DE2146578A1 (en) * 1970-09-18 1972-03-30 Caterpillar Tractor Co., Peoria, 111. (V.StA.) Fuel injection pump with lever adjustable metering bush
EP0185915A2 (en) * 1984-12-24 1986-07-02 Robert Bosch Gmbh Fuel injection pump for internal combustion engines

Also Published As

Publication number Publication date
DE3447374A1 (en) 1986-07-10
US4708114A (en) 1987-11-24
JPS61157753A (en) 1986-07-17
JPH0561465B2 (en) 1993-09-06
EP0185914A2 (en) 1986-07-02
ATE50320T1 (en) 1990-02-15
EP0185914B1 (en) 1990-02-07
DE3575979D1 (en) 1990-03-15

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