GB1391327A - Fuel injection devices for internal combustion engines - Google Patents

Fuel injection devices for internal combustion engines

Info

Publication number
GB1391327A
GB1391327A GB2483572A GB2483572A GB1391327A GB 1391327 A GB1391327 A GB 1391327A GB 2483572 A GB2483572 A GB 2483572A GB 2483572 A GB2483572 A GB 2483572A GB 1391327 A GB1391327 A GB 1391327A
Authority
GB
United Kingdom
Prior art keywords
pressure
fuel
valve
chamber
pump
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
GB2483572A
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 GB1391327A publication Critical patent/GB1391327A/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
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/12—Other methods of operation
    • F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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

1391327 Electromagnetic fuel injectors ROBERT BOSCH GmbH 26 May 1972 [28 May 1971] 24835/72 Heading F1B A fuel injection device has a hydraulically drivable pump piston 19, Fig. 1 with equal area end faces 42, 40 respectively exposed to a pump working chamber 43 and a servo pressure chamber 39, a supply valve 31 arranged between a pressure source 37 and the pump working chamber, a solenoid valve 16 controls the fuel flow from the pressure source to the servo pressure chamber and from the servo pressure chamber to a return flow line, a spring-loaded injection valve 28 whose opening pressure is greater than the pressure in the pump working chamber during the filling stroke and a throttle member 22 between the pressure source and the supply valve. The supply valve opens at a pressure which, together with the maximum filling pressure of the pump working chamber is at most equal to the fuel supply pressure whilst the maximum filling pressure is smaller than the injection valve opening pressure. Before injection the pump piston 19 is in its upper position abutting a stop 41. When solenoid valve 16 moves from the closed to the open position the ball 53 moves from seat 54 on to seat 56 and pressurized fuel flows into the servo pressure chamber 39 causing pump piston 19 to move downwardly until its other face 42 abuts stop 47. Fuel in the pump working chamber 43 is forced through bore 44 to the injection valve 24. Since the fuel pressure in pump piston face 40 is greater than the injection valve opening pressure, valve 21 is closed and fuel is injected by nozzle 23. At the end of injection solenoid valve 16 closes so that ball 53 blocks the fuel supply to the servo pressure chamber 39 and the latter discharges via seat 56. The pressure in the pump working chamber 43 drops, valve 21 opens to refill the chamber. In another embodiment a duct 74, Fig. 2 allows the escape of air or vapour bubbles when the pump piston 19 is in its lower position. In another embodiment the pump housing is lengthened.
GB2483572A 1971-05-28 1972-05-26 Fuel injection devices for internal combustion engines Expired GB1391327A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712126653 DE2126653A1 (en) 1971-05-28 1971-05-28 Fuel injection device for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1391327A true GB1391327A (en) 1975-04-23

Family

ID=5809246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2483572A Expired GB1391327A (en) 1971-05-28 1972-05-26 Fuel injection devices for internal combustion engines

Country Status (6)

Country Link
US (1) US3835829A (en)
CS (1) CS155120B2 (en)
DE (1) DE2126653A1 (en)
FR (1) FR2140019B1 (en)
GB (1) GB1391327A (en)
IT (1) IT955953B (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501283A1 (en) * 1975-01-15 1976-07-22 Bosch Gmbh Robert INJECTION VALVE
US4219154A (en) * 1978-07-10 1980-08-26 The Bendix Corporation Electronically controlled, solenoid operated fuel injection system
US4379442A (en) * 1980-10-06 1983-04-12 Ford Motor Company Electromagnetically controlled fuel injection pump
US4327695A (en) * 1980-12-22 1982-05-04 Ford Motor Company Unit fuel injector assembly with feedback control
US4422424A (en) * 1981-06-23 1983-12-27 The Bendix Corporation Electronically controlled fuel injection pump
AT378242B (en) * 1981-07-31 1985-07-10 Berchtold Max Prof FUEL INJECTION SYSTEM FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY DIESEL ENGINES
DE3141154C2 (en) * 1981-10-16 1993-10-21 Bosch Gmbh Robert Fuel injection system
US4838232A (en) * 1984-08-14 1989-06-13 Ail Corporation Fuel delivery control system
US5181494A (en) * 1991-10-11 1993-01-26 Caterpillar, Inc. Hydraulically-actuated electronically-controlled unit injector having stroke-controlled piston and methods of operation
US5271371A (en) * 1991-10-11 1993-12-21 Caterpillar Inc. Actuator and valve assembly for a hydraulically-actuated electronically-controlled injector
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
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
US5168855A (en) * 1991-10-11 1992-12-08 Caterpillar Inc. Hydraulically-actuated fuel injection system having Helmholtz resonance controlling device
US5407131A (en) * 1994-01-25 1995-04-18 Caterpillar Inc. Fuel injection control valve
US5474234A (en) * 1994-03-22 1995-12-12 Caterpillar Inc. Electrically controlled fluid control valve of a fuel injector system
US5488340A (en) * 1994-05-20 1996-01-30 Caterpillar Inc. Hard magnetic valve actuator adapted for a fuel injector
US5449119A (en) * 1994-05-25 1995-09-12 Caterpillar Inc. Magnetically adjustable valve adapted for a fuel injector
US5494219A (en) * 1994-06-02 1996-02-27 Caterpillar Inc. Fuel injection control valve with dual solenoids
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
US5479901A (en) * 1994-06-27 1996-01-02 Caterpillar Inc. Electro-hydraulic spool control valve assembly adapted for a fuel injector
US5494220A (en) * 1994-08-08 1996-02-27 Caterpillar Inc. Fuel injector assembly with pressure-equalized valve seat
US5605289A (en) * 1994-12-02 1997-02-25 Caterpillar Inc. Fuel injector with spring-biased control valve
US6148778A (en) * 1995-05-17 2000-11-21 Sturman Industries, Inc. Air-fuel module adapted for an internal combustion engine
US5597118A (en) * 1995-05-26 1997-01-28 Caterpillar Inc. Direct-operated spool valve for a fuel injector
US5720318A (en) * 1995-05-26 1998-02-24 Caterpillar Inc. Solenoid actuated miniservo spool valve
US5758626A (en) * 1995-10-05 1998-06-02 Caterpillar Inc. Magnetically adjustable valve adapted for a fuel injector
US5975139A (en) * 1998-01-09 1999-11-02 Caterpillar Inc. Servo control valve for a hydraulically-actuated device
US6085991A (en) * 1998-05-14 2000-07-11 Sturman; Oded E. Intensified fuel injector having a lateral drain passage
JP4483770B2 (en) * 2005-11-18 2010-06-16 株式会社デンソー Solenoid valve abnormality diagnosis method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598528A (en) * 1948-12-20 1952-05-27 Louis O French Fuel injection apparatus

Also Published As

Publication number Publication date
US3835829A (en) 1974-09-17
CS155120B2 (en) 1974-05-30
FR2140019B1 (en) 1973-07-13
IT955953B (en) 1973-09-29
DE2126653A1 (en) 1972-12-07
FR2140019A1 (en) 1973-01-12

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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