GB1427068A - Air-fuel mixture supply control system for use with carburetors for internal combustion engines - Google Patents

Air-fuel mixture supply control system for use with carburetors for internal combustion engines

Info

Publication number
GB1427068A
GB1427068A GB1802273A GB1802273A GB1427068A GB 1427068 A GB1427068 A GB 1427068A GB 1802273 A GB1802273 A GB 1802273A GB 1802273 A GB1802273 A GB 1802273A GB 1427068 A GB1427068 A GB 1427068A
Authority
GB
United Kingdom
Prior art keywords
air
signal
engine
fuel ratio
passage
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
GB1802273A
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of GB1427068A publication Critical patent/GB1427068A/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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/23—Fuel aerating devices
    • F02M7/24—Controlling flow of aerating air
    • F02M7/28—Controlling flow of aerating air dependent on temperature or pressure
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • 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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • F02M7/133—Auxiliary jets, i.e. operating only under certain conditions, e.g. full power

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

1427068 Electric control of fuel supply to I C engines NISSAN MOTOR CO Ltd 13 April 1973 [14 April 1972] 18022/73 Heading G3N [Also in Division F1] In an I C engine, the air-fuel ratio of the combustible mixture supplied to the engine by a carbutetter is controlled in dependence upon at least one of the engine speed, the engine temperature, the position of a combustible mixture flow control member and the atmospheric pressure by providing an electrical analogue signal representing the corresponding variable, supplying the or each analogue signal together with a dither signal to a computing circuit 50 to produce an output signal representing an optimum air-to-fuel ratio. and providing an operating command signal in response to the output signal from a circuit 60 which is applied to means for adjusting the air-fuel ratio of the mixture. As shown, the engine is provided with a carburetter 10 in which the air and fuel are mixed in a chamber 18 and supplied to an induction passage 12, via a nozzle 27. The fuel is supplied to chamber 18 from a float chamber 16 via a passage 23 and a flow control member 24 or an auxiliary passage 25 and a flow control member 26 and the air is supplied to chamber 18 via a control jet 21 and a passage 19 and a control jet 22 and a passage 20. The air-fuel ratio is controlled by controlling at least one of the jets 21, 22 and the control members 24, 26. As shown, the jet 21 is controlled by a needle 33 whose position is controlled by a pair of solenoids 34b, 34c which receive the operating command signal from circuit 60. As particularly described, all four variables are operative to control the air-fuel ratio. The engine speed is sensed at 40 to provide a pulse signal which is converted at 44 into an analogue signal n. The engine temperature is sensed by a thermistor 45, the throttle position by a potentiometer 46 and the atmospheric pressure by a transducer 48. The electronic computer, 50, Fig, 10 (not shown) includes a function generator, Figs. 7 and 8 (not shown), for each input signal and a summing amplifier which receives the output of each function generator and the dither signal the resulting signal being compared in a comparator in the circuit 60 with a reference level to provide a pulse signal for controlling the needle 33.
GB1802273A 1972-04-14 1973-04-13 Air-fuel mixture supply control system for use with carburetors for internal combustion engines Expired GB1427068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47037457A JPS5118023B2 (en) 1972-04-14 1972-04-14

Publications (1)

Publication Number Publication Date
GB1427068A true GB1427068A (en) 1976-03-03

Family

ID=12498035

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1802273A Expired GB1427068A (en) 1972-04-14 1973-04-13 Air-fuel mixture supply control system for use with carburetors for internal combustion engines

Country Status (5)

Country Link
US (1) US3861366A (en)
JP (1) JPS5118023B2 (en)
DE (1) DE2318793B2 (en)
FR (1) FR2180119B1 (en)
GB (1) GB1427068A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110217115A (en) * 2019-06-25 2019-09-10 芜湖宏宇汽车电子有限责任公司 A kind of automobile travel increasing apparatus and control method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110217115A (en) * 2019-06-25 2019-09-10 芜湖宏宇汽车电子有限责任公司 A kind of automobile travel increasing apparatus and control method

Also Published As

Publication number Publication date
JPS5118023B2 (en) 1976-06-07
FR2180119A1 (en) 1973-11-23
DE2318793A1 (en) 1973-10-18
JPS48103929A (en) 1973-12-26
US3861366A (en) 1975-01-21
DE2318793B2 (en) 1977-12-22
FR2180119B1 (en) 1978-03-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee