GB1208570A - Fuel injection systems for internal combustion engines - Google Patents

Fuel injection systems for internal combustion engines

Info

Publication number
GB1208570A
GB1208570A GB5878/67A GB587867A GB1208570A GB 1208570 A GB1208570 A GB 1208570A GB 5878/67 A GB5878/67 A GB 5878/67A GB 587867 A GB587867 A GB 587867A GB 1208570 A GB1208570 A GB 1208570A
Authority
GB
United Kingdom
Prior art keywords
voltage
supply voltage
bias
period
open
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
GB5878/67A
Inventor
Joseph Mair
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.)
Associated Engineering Ltd
Original Assignee
Associated Engineering Ltd
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 Associated Engineering Ltd filed Critical Associated Engineering Ltd
Priority to GB5878/67A priority Critical patent/GB1208570A/en
Priority to US702032A priority patent/US3513815A/en
Priority to DE19681601358 priority patent/DE1601358A1/en
Priority to JP43006946A priority patent/JPS4940575B1/ja
Priority to FR1555024D priority patent/FR1555024A/fr
Priority to SE01558/68A priority patent/SE337506B/xx
Publication of GB1208570A publication Critical patent/GB1208570A/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
    • F02D41/3005—Details not otherwise provided for
    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2031—Control of the current by means of delays or monostable multivibrators
    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
    • F02D2041/2082—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements the circuit being adapted to distribute current between different actuators or recuperate energy from actuators

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)
  • Fuel-Injection Apparatus (AREA)

Abstract

1,208,570. Fuel injection control system for I.C. engines. ASSOCIATED ENG. Ltd. Feb. 1, 1968 [Feb. 7, 1967], No.5878/67. Heading G1N. [Also in Division H3] In known fuel injection control systems (e.g. Specifications 1, 038, 541 and 1, 107, 989) for I.C. engines, wherein a pulse generator including a mono-stable multi-vibrator energizes electromagnetic injector valves to open the valve for a period depending on the duration of each pulse, the higher the supply voltage the more rapidly the injector valve will open, the reduction in opening time increasing the length of the open period; likewise a lower than normal supply voltage reduces the open period and quantity of fuel injected. In the present Specification the injection period is made independent of the supply voltage by the application of a bias voltage to the mono-stable multi-vibrator which bias varies as the supply voltage varies, to lengthen or shorten the period. Compensating for supply volts variation. As shown, a bias voltage V 6 applied to the emitters of TR 1 and TR 2 of the multi-vibrator is derived from a potential divider P which includes a non linear element Z 1 , e.g. a Zener diode or saturated diode. Since the voltage across Z 1 remains practically constant as its current increases (or decreases) with changes in the supply voltage, the voltage across the resistors of the potential divider including the bias voltage Vb, across Rb, will increase in proportion faster than the supply voltage V s . The voltage change across C1 which in part determines the pulse width is thus increased at a lesser rate than V s so that the width of the pulse energizing the valves is reduced to compensate for the shorter opening time at the increased supply voltage. Likewise the bias Vb decreases proportionally with decrease in V s . In the circuit shown the control voltage V 1 is derived from for example, engine speed, acceleration and/or inlet manifold pressure and the control voltage V 2 which affects the discharge of C 1 through TR 4 is derived from engine temperature, air temperature, starting and idling enrichment signals for example, as in Specification 1, 107, 989.
GB5878/67A 1967-02-07 1967-02-07 Fuel injection systems for internal combustion engines Expired GB1208570A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB5878/67A GB1208570A (en) 1967-02-07 1967-02-07 Fuel injection systems for internal combustion engines
US702032A US3513815A (en) 1967-02-07 1968-01-31 Fuel injection systems for internal combustion engines
DE19681601358 DE1601358A1 (en) 1967-02-07 1968-02-02 Fuel injection system for internal combustion engines
JP43006946A JPS4940575B1 (en) 1967-02-07 1968-02-06
FR1555024D FR1555024A (en) 1967-02-07 1968-02-06
SE01558/68A SE337506B (en) 1967-02-07 1968-02-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5878/67A GB1208570A (en) 1967-02-07 1967-02-07 Fuel injection systems for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1208570A true GB1208570A (en) 1970-10-14

Family

ID=9804310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5878/67A Expired GB1208570A (en) 1967-02-07 1967-02-07 Fuel injection systems for internal combustion engines

Country Status (6)

Country Link
US (1) US3513815A (en)
JP (1) JPS4940575B1 (en)
DE (1) DE1601358A1 (en)
FR (1) FR1555024A (en)
GB (1) GB1208570A (en)
SE (1) SE337506B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646915A (en) * 1970-06-16 1972-03-07 Bendix Corp Cold start auxiliary circuit for electronic fuel control system
US3797465A (en) * 1970-07-04 1974-03-19 Nippon Denso Co Fuel injection system for internal combustion engines
GB1362808A (en) * 1970-12-31 1974-08-07 Nissan Motor Fuel injection system incorporating shift shock preventing device
US4417201A (en) * 1971-04-01 1983-11-22 The Bendix Corporation Control means for controlling the energy provided to the injector valves of an electrically controlled fuel system
JPS50114098A (en) * 1975-01-24 1975-09-06
GB1564496A (en) * 1975-09-05 1980-04-10 Lucas Industries Ltd Electronic fuel injection control for an internal combustion engine
US4173030A (en) * 1978-05-17 1979-10-30 General Motors Corporation Fuel injector driver circuit
JPS5866297U (en) * 1981-10-27 1983-05-06 株式会社オンダ magnetic target board
DE3445414A1 (en) * 1984-12-13 1986-06-19 Robert Bosch Gmbh, 7000 Stuttgart ELECTRONICALLY CONTROLLED FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
JPS61255234A (en) * 1985-05-08 1986-11-12 Honda Motor Co Ltd Fuel feed control on start of internal-combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE567344A (en) * 1957-05-04

Also Published As

Publication number Publication date
SE337506B (en) 1971-08-09
JPS4940575B1 (en) 1974-11-02
US3513815A (en) 1970-05-26
DE1601358A1 (en) 1970-11-19
FR1555024A (en) 1969-01-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PE20 Patent expired after termination of 20 years

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