GB904461A - Improvements in or relating to fuel injection systems for internal combustion engines - Google Patents

Improvements in or relating to fuel injection systems for internal combustion engines

Info

Publication number
GB904461A
GB904461A GB38054/58A GB3805458A GB904461A GB 904461 A GB904461 A GB 904461A GB 38054/58 A GB38054/58 A GB 38054/58A GB 3805458 A GB3805458 A GB 3805458A GB 904461 A GB904461 A GB 904461A
Authority
GB
United Kingdom
Prior art keywords
capacitor
transistor
switch
engine
fuel injection
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
GB38054/58A
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 GB904461A publication Critical patent/GB904461A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/32—Controlling fuel injection of the low pressure type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

904,461. Electric control systems. BOSCH G.m.b.H., ROBERT. Nov. 26, 1958 [Nov. 27, 1957], No. 38054/58. Class 40 (1). [Also in Groups XXVII and XL (c)] The fuel injection valve of an I.C. engine is opened during the unstable state of a monostable transistor flip-flop circuit which is changed over once per revolution for each cylinder by a cam driven by the engine shaft, and returns to its stable state after a time period determined by the speed of the engine, the position of the throttle lever, and the temperature and pressure of the air. As shown (Fig. 1), the valve cone 35 of a fuel injection valve 33 is raised to allow fuel to be injected into the intake pipe 30 of an I.C. engine 10 when coil 34 is energized by the output of an amp ifier 28, which occurs when normally conducting transistor T 2 is cut off by transistor T 1 conducting after switch 39 has been closed by cam 38 driven by the motor shaft 11. The duration of the cut-off is determined partly by the potential at the emitter E 2 of transistor T 2 and partly by the discharge time of capacitor 58 through its shunt resistors 59, 60, resistor 59 being sensitive to atmospheric temperature and pressure. Motor shaft 11 drives a second cam 25 to cyclically close a switch 27, when capacitor 76 is charged through the emitter-base path of transistor T 3 , and capacitor 78 is also simultaneously charged, to be discharged through a potentiometer resistor R when switch 27 is open. Since the charging time of capacitor 78 is determined only by the values of capacitor 76 and resistor 77, and is therefore constant, and its discharge time depends on the period between successive closures of switch 27, the average voltage across capacitor 78, and potentiometer R, is higher at higher motor speeds, and thus reduces the time during which transistor T 2 is non-conducting, and valve cone 35 is raised. The voltage at the emitter Eg is further controlled by the position of the slider of potentiometer R, which is mechanically linked to the throttle lever 81.
GB38054/58A 1957-11-27 1958-11-26 Improvements in or relating to fuel injection systems for internal combustion engines Expired GB904461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB46921A DE1208944B (en) 1957-11-27 1957-11-27 Injection system for externally ignited internal combustion engines

Publications (1)

Publication Number Publication Date
GB904461A true GB904461A (en) 1962-08-29

Family

ID=6968084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38054/58A Expired GB904461A (en) 1957-11-27 1958-11-26 Improvements in or relating to fuel injection systems for internal combustion engines

Country Status (4)

Country Link
US (1) US2936744A (en)
DE (1) DE1208944B (en)
FR (1) FR1206539A (en)
GB (1) GB904461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747576A (en) * 1971-05-24 1973-07-24 Gen Motors Corp Electronic fuel injection system including transient power compensation

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020897A (en) * 1959-11-18 1962-02-13 Sony Corp Ignition system for an internal combustion engine
US3153746A (en) * 1961-07-03 1964-10-20 Duane E Atkinson Internal combustion engine overspeed control
GB1038541A (en) * 1962-06-07 1966-08-10 Ass Eng Ltd Fuel injection systems for internal combustion engines
DE1526774C3 (en) * 1966-11-26 1973-11-08 Robert Bosch Gmbh, 7000 Stuttgart Ignition distributor with signal generator
DE1576284C3 (en) * 1967-07-12 1975-01-16 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system with at least one electromagnetically actuated injection valve
DE1601363C3 (en) * 1968-01-23 1975-03-13 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for internal combustion engines with magnetically controlled function transmitters
DE1802859A1 (en) * 1968-10-12 1970-05-27 Bosch Gmbh Robert Electronic diesel adjustment controller
GB1244925A (en) * 1968-10-23 1971-09-02 Brevete Et D Etudes S I B E So Improvements in or relating to fuel feed devices for internal combustion engines
DE1805050C3 (en) * 1968-10-25 1979-08-23 Robert Bosch Gmbh, 7000 Stuttgart Electronic control device for an internal combustion engine, in particular a diesel engine
US3660689A (en) * 1969-05-14 1972-05-02 Nippon Denso Co Timing signal generating system for internal combustion engines
US3756204A (en) * 1969-06-16 1973-09-04 Hitachi Ltd Fuel injection system for internal combustion engines
US3719176A (en) * 1969-07-29 1973-03-06 Toyota Motor Co Ltd Electric fuel injection control system for internal combustion engines
DE2457434A1 (en) * 1974-12-05 1976-06-10 Bosch Gmbh Robert DEVICE FOR DETERMINING THE FUEL INJECTION QUANTITY IN MIXED COMPRESSING COMBUSTION ENGINES
US4372271A (en) * 1977-03-17 1983-02-08 The Bendix Corporation Single point intermittent flow fuel injection
FR2389006A1 (en) * 1977-04-27 1978-11-24 Lucas Industries Ltd Electronically regulated fuel feed system - has pneumatic servo piston with linear transmission to help regulate magnetic fuel valve
JPS6040838Y2 (en) * 1979-09-25 1985-12-10 日産自動車株式会社 Internal combustion engine fuel supply system
US4411233A (en) * 1980-07-17 1983-10-25 Societe Industrielle De Brevets Et D'etudes S.I.B.E. Carburation devices for internal combustion engines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE655355C (en) * 1930-09-10 1938-01-14 Harry E Kennedy Method and device for the electromagnetic control of the fuel injection valves of an internal combustion engine
DE672573C (en) * 1936-02-25 1939-03-04 Hoelscher A Fuel injector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747576A (en) * 1971-05-24 1973-07-24 Gen Motors Corp Electronic fuel injection system including transient power compensation

Also Published As

Publication number Publication date
US2936744A (en) 1960-05-17
DE1208944B (en) 1966-01-13
FR1206539A (en) 1960-02-10

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