GB1314115A - Fuel injection pump nozzles for internal combustion engines - Google Patents

Fuel injection pump nozzles for internal combustion engines

Info

Publication number
GB1314115A
GB1314115A GB2346271*A GB2346271A GB1314115A GB 1314115 A GB1314115 A GB 1314115A GB 2346271 A GB2346271 A GB 2346271A GB 1314115 A GB1314115 A GB 1314115A
Authority
GB
United Kingdom
Prior art keywords
chamber
valve
fuel
injection
servopiston
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
GB2346271*A
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
Publication of GB1314115A publication Critical patent/GB1314115A/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
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • 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
    • F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
    • 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/13—Special devices for making an explosive mixture; Fuel pumps
    • F02M2700/1317—Fuel pumpo for internal combustion engines
    • F02M2700/1358—Fuel pump with control of fuel inlet to the pumping chamber

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

1314115 I. C. engine fuel injections ROBERT BOSCH GmbH 19 April 1971 [14 March 1970] 23462/71 Headings F1B and F1D A fuel injection pump nozzle for 1. C. engines comprised a pump piston 37 operated by a servopiston 34, fuel being fed from a supply pipe 29 to the pump piston working chamber 41 via a supply valve 44 and to the servopiston pressure chamber 32 when a magnetically operated valve 73,, which is operated in timed relationship with engine cycles is opened to start the injection. When valve 73 is returned to the position shown in Fig. 1, injection ceases and the servopiston begins its return stroke causing fuel in chamber 32 to be ejected via a return pipe 36. There is a continuously open connection between the pump working chamber 41 and an injection nozzle chamber 57 whose outlet is controlled by a valve needle 19. The needle 19 is opened by pressure in chamber 57 when the pump piston 37 is actuated. The magnetically operated valve is pressure compensated via passage 85. Fuel leaking past pistons 34, 37 collects in chamber 69 and is taken via non- return valve 68 to return pipe 36.
GB2346271*A 1970-03-14 1971-04-19 Fuel injection pump nozzles for internal combustion engines Expired GB1314115A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702012202 DE2012202A1 (en) 1970-03-14 1970-03-14 Pump nozzle for fuel injection for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1314115A true GB1314115A (en) 1973-04-18

Family

ID=5765105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2346271*A Expired GB1314115A (en) 1970-03-14 1971-04-19 Fuel injection pump nozzles for internal combustion engines

Country Status (5)

Country Link
US (1) US3689205A (en)
AT (1) AT307163B (en)
DE (1) DE2012202A1 (en)
FR (1) FR2084575A5 (en)
GB (1) GB1314115A (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1470166A (en) * 1973-05-12 1977-04-14 Cav Ltd Fuel injection pumping apparatus
US4046112A (en) * 1975-10-20 1977-09-06 General Motors Corporation Electromagnetic fuel injector
GB1599649A (en) * 1977-12-09 1981-10-07 Lucas Industries Ltd Fuel injection system
US4182492A (en) * 1978-01-16 1980-01-08 Combustion Research & Technology, Inc. Hydraulically operated pressure amplification system for fuel injectors
DE3039972A1 (en) * 1980-10-23 1982-05-27 Robert Bosch Gmbh, 7000 Stuttgart Electrically-controlled fuel injection device - has sliding piston clamped by piezoelectric expansion for accurate control of injected quantity of fuel
EP0054483A1 (en) * 1980-12-17 1982-06-23 The Bendix Corporation Fuel injection delivery system for a diesel engine
US4448169A (en) * 1980-12-31 1984-05-15 Cummins Engine Company, Inc. Injector for diesel engine
DE3133288A1 (en) * 1981-08-22 1983-03-03 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Fuel injection system on an internal combustion engine
US4485969A (en) * 1982-02-19 1984-12-04 General Motors Corporation Electromagnetic unit fuel injector with cartridge type solenoid actuated valve
RU2085757C1 (en) * 1991-10-11 1997-07-27 Катерпиллар Инк. Valve and actuator unit for hydraulically operated nozzle with electronic control
US5181494A (en) * 1991-10-11 1993-01-26 Caterpillar, Inc. Hydraulically-actuated electronically-controlled unit injector having stroke-controlled piston and methods of operation
US5191867A (en) * 1991-10-11 1993-03-09 Caterpillar Inc. Hydraulically-actuated electronically-controlled unit injector fuel system having variable control of actuating fluid pressure
US5121730A (en) * 1991-10-11 1992-06-16 Caterpillar Inc. Methods of conditioning fluid in an electronically-controlled unit injector for starting
EP0607144B1 (en) * 1991-10-11 1995-11-22 Caterpillar Inc. Actuator and valve assembly for a hydraulically-actuated electronically-controlled unit injector
US5168855A (en) * 1991-10-11 1992-12-08 Caterpillar Inc. Hydraulically-actuated fuel injection system having Helmholtz resonance controlling device
US5176115A (en) * 1991-10-11 1993-01-05 Caterpillar Inc. Methods of operating a hydraulically-actuated electronically-controlled fuel injection system adapted for starting an engine
US5271371A (en) * 1991-10-11 1993-12-21 Caterpillar Inc. Actuator and valve assembly for a hydraulically-actuated electronically-controlled injector
US5245970A (en) * 1992-09-04 1993-09-21 Navistar International Transportation Corp. Priming reservoir and volume compensation device for hydraulic unit injector fuel system
US5297523A (en) * 1993-02-26 1994-03-29 Caterpillar Inc. Tuned actuating fluid inlet manifold for a hydraulically-actuated fuel injection system
US6161770A (en) * 1994-06-06 2000-12-19 Sturman; Oded E. Hydraulically driven springless fuel injector
US6257499B1 (en) 1994-06-06 2001-07-10 Oded E. Sturman High speed fuel injector
US5566660A (en) * 1995-04-13 1996-10-22 Caterpillar Inc. Fuel injection rate shaping apparatus for a unit fuel injector
US5632444A (en) * 1995-04-13 1997-05-27 Caterpillar Inc. Fuel injection rate shaping apparatus for a unit injector
US6148778A (en) * 1995-05-17 2000-11-21 Sturman Industries, Inc. Air-fuel module adapted for an internal combustion engine
US5499608A (en) * 1995-06-19 1996-03-19 Caterpillar Inc. Method of staged activation for electronically actuated fuel injectors
US5740782A (en) * 1996-05-20 1998-04-21 Lowi, Jr.; Alvin Positive-displacement-metering, electro-hydraulic fuel injection system
US6126412A (en) * 1997-12-10 2000-10-03 Caterpillar Inc. Fluid driven piston assembly and fuel injector using same
US6085991A (en) * 1998-05-14 2000-07-11 Sturman; Oded E. Intensified fuel injector having a lateral drain passage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537748A (en) * 1947-03-10 1951-01-09 Evans Arthur Frederick Fuel injection pump for internalcombustion engines
US2598528A (en) * 1948-12-20 1952-05-27 Louis O French Fuel injection apparatus

Also Published As

Publication number Publication date
DE2012202A1 (en) 1971-10-07
US3689205A (en) 1972-09-05
FR2084575A5 (en) 1971-12-17
AT307163B (en) 1973-05-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees