GB1410706A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1410706A
GB1410706A GB132273A GB132273A GB1410706A GB 1410706 A GB1410706 A GB 1410706A GB 132273 A GB132273 A GB 132273A GB 132273 A GB132273 A GB 132273A GB 1410706 A GB1410706 A GB 1410706A
Authority
GB
United Kingdom
Prior art keywords
temperature
resistor
dependent
resistors
amplifier
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
GB132273A
Inventor
H Knapp
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 GB1410706A publication Critical patent/GB1410706A/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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/16—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors
    • F02M69/18—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air

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)
  • Measuring Volume Flow (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

1410706 Electronic fuel injection systems for I C engines ROBERT BOSCH GmbH 10 Jan 1973 [11 Jan 1972] 1322/73 Heading G1N [Also in Divisions F and G3] In an I.C. engine electronic fuel injection system, a temperature-dependent resistor 45 arranged in a bridge circuit is provided for determining the quantity of intake air, the bridge circuit charactistic being substantially the same as those of a second bridge circuit also provided with a temperature dependent resistor 19 for determining the quantity of fuel supplied to the engine. As shown in Fig. 2, the temperature-dependent resistor 45 is arranged in a bridge circuit with a second temperature-dependent resistor 46 and two fixed resistors 48, 49, one diagonal of the bridge being connected to an amplifier 54 which controls the current or voltage of the bridge to maintain the temperature of resistor 45 substantially constant, the output of the amplifier then representing the quantity of intake air flowing per unit time. The resistor 46 compensates for air temperature variations. A second bridge circuit includes two temperature-dependent resistors 18, 19 arranged in the fuel supply ducts 17, 20 and fixed resistors 59, 60. An amplifier 65 controls the bridge current or voltage to maintain the temperature of resistor 19 substantially constant, the output of amplifier 65 then representing the quantity of fuel supplied to the engine per unit time. The resistor 18 compensates for fuel temperature variations. The outputs of amplifiers 54, 65 are compared in an operational amplifier 67, the difference controlling an electromagnet 32 which adjusts the movable member of 9 fuel metering valve until the outputs of the amplifiers 54, 65 balance. A resistor 72 connected to the butterfly valve 47 provides # correction and a resistor 73 dependent upon engine cooling water temperature provides heating-up correction. The temperature-dependent resistors are preferably hot wire or hot film resistors having positive temperature coefficients. However, negative temperature coefficient resistors may be used.
GB132273A 1972-01-11 1973-01-10 Fuel injection systems Expired GB1410706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2201135A DE2201135C3 (en) 1972-01-11 1972-01-11 Fuel injection system for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1410706A true GB1410706A (en) 1975-10-22

Family

ID=5832720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB132273A Expired GB1410706A (en) 1972-01-11 1973-01-10 Fuel injection systems

Country Status (7)

Country Link
US (1) US3796199A (en)
JP (1) JPS5517213B2 (en)
BR (1) BR7300194D0 (en)
DE (1) DE2201135C3 (en)
FR (1) FR2167906B3 (en)
GB (1) GB1410706A (en)
SE (1) SE375828B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431032A1 (en) * 1978-07-14 1980-02-08 Mitsubishi Motors Corp FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES WITH SPARK IGNITION
DE2906847A1 (en) * 1979-02-22 1980-09-04 Bosch Gmbh Robert DEVICE FOR MEASURING THE AIR FLOW RATE IN THE AIR PIPE OF AN INTERNAL COMBUSTION ENGINE

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2246547C2 (en) * 1972-09-22 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for mixture-compressing internal combustion engines
US4043304A (en) * 1973-05-02 1977-08-23 Robert Bosch Gmbh Fuel injection system for self-igniting internal combustion engines
GB1482194A (en) * 1973-08-11 1977-08-10 Lucas Electrical Ltd Engine fuel control system
DE2448304C2 (en) * 1974-10-10 1986-04-03 Robert Bosch Gmbh, 7000 Stuttgart Electrically controlled fuel injection system for internal combustion engines
GB1530452A (en) * 1975-02-05 1978-11-01 Smiths Industries Ltd Speed sensing
DE2507917C2 (en) * 1975-02-24 1986-01-02 Robert Bosch Gmbh, 7000 Stuttgart Device for regulating the optimal operating behavior of an internal combustion engine
DE2520911C2 (en) * 1975-05-10 1984-03-22 Robert Bosch Gmbh, 7000 Stuttgart Device for adapting the amount of fuel supplied per stroke by an electric fuel injection system of an internal combustion engine to changing temperatures of the intake air
US4048964A (en) * 1975-07-24 1977-09-20 Chrysler Corporation Fuel metering apparatus and method
DE2612913C2 (en) * 1976-03-26 1984-11-08 Robert Bosch Gmbh, 7000 Stuttgart Method for warm-up enrichment of the fuel-air mixture supplied to an internal combustion engine and warm-up enrichment circuit
DE2625128A1 (en) * 1976-06-04 1977-12-08 Deutsche Vergaser Gmbh Co Kg FUEL QUANTITY DISTRIBUTOR
JPS581646Y2 (en) * 1978-12-21 1983-01-12 日産自動車株式会社 Internal combustion engine mixture supply system
JPS60145438A (en) * 1983-09-07 1985-07-31 Hitachi Ltd Fuel controller for internal-combustion engine
JPS60178952A (en) * 1984-02-27 1985-09-12 Mitsubishi Electric Corp Fuel injection controller for internal-combustion engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109953B (en) * 1957-05-02 1961-06-29 Bosch Gmbh Robert Electrically controlled fuel injection system for internal combustion engines
US2943614A (en) * 1957-05-02 1960-07-05 Bosch Robert Fuel injection arrangement
CH434874A (en) * 1966-04-14 1967-04-30 Huber Robert Injection device for injecting fuel into the intake manifold of spark-ignition internal combustion engines
JPS4948893B1 (en) * 1970-08-29 1974-12-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431032A1 (en) * 1978-07-14 1980-02-08 Mitsubishi Motors Corp FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES WITH SPARK IGNITION
DE2906847A1 (en) * 1979-02-22 1980-09-04 Bosch Gmbh Robert DEVICE FOR MEASURING THE AIR FLOW RATE IN THE AIR PIPE OF AN INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
DE2201135B2 (en) 1978-08-10
FR2167906B3 (en) 1975-11-07
US3796199A (en) 1974-03-12
SE375828B (en) 1975-04-28
JPS5517213B2 (en) 1980-05-09
DE2201135A1 (en) 1973-07-19
BR7300194D0 (en) 1973-10-25
FR2167906A1 (en) 1973-08-24
JPS4878327A (en) 1973-10-20
DE2201135C3 (en) 1979-04-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee