GB1398366A - Carburetor intake air flow measuring device - Google Patents

Carburetor intake air flow measuring device

Info

Publication number
GB1398366A
GB1398366A GB4249173A GB4249173A GB1398366A GB 1398366 A GB1398366 A GB 1398366A GB 4249173 A GB4249173 A GB 4249173A GB 4249173 A GB4249173 A GB 4249173A GB 1398366 A GB1398366 A GB 1398366A
Authority
GB
United Kingdom
Prior art keywords
pressure
carburetter
venturi
bellows
fed
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
GB4249173A
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 GB1398366A publication Critical patent/GB1398366A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/38—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule
    • G01F1/383—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule with electrical or electro-mechanical indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • G01F1/44—Venturi tubes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/50—Correcting or compensating means

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

1398366 Measuring carburetter air intake NISSAN MOTOR CO Ltd 10 Sept 1973 [13 Sept 1972] 42491/73 Heading G1N The mass rate of flow of air into the carburetter of an I.C. engine is determined by measuring electrically the ambient pressure, the ambient temperature and the pressure difference between the carburetter Venturi and the atmosphere, and combining these signals in a known relationship to produce a signal representing the flow-rate. In one embodiment Fig. 1, the ambient pressure signal is obtained by transducer 20, the ambient temperature signal by thermistor 19 and the differential pressure signal by transducer 30 comprising a bellows 35, fed at 36 with the pressure P 2 at the carburetter Venturi 14, inside a sealed housing 31 fed with the ambient pressure P 1 at an upstream point 34. The bellows controls the slider of a potentiometer 38 to produce the pressure difference signal. These three signals are combined as required in a computer 40 to determine the mass rate of flow of air into the carburetter 10. In another embodiment Fig. 2 for use with a two-barrel carburetter 50 comprising a first and second Venturi 51, 52 in a first and second induction passageway 57, 59, the primary throttle valve 53 controlling a secondary throttle valve 54 via a diaphragm unit 55, the total differential pressure is sensed by a housing 65, fed with ambient pressure P' 1 at 67, containing a first bellows 69 fed with the pressure P' 2 at the first Venturi 51 and a second bellows 71 fed with the pressure P 2 " at the second Venturi 52. The bellows are attached to rods, 69a, 71a associated with a Piezo-electric element 75 whose output signal is proportional to the total differential pressure. Alternatively the differential pressure may be measured for each barrel separately and combined in computer 80.
GB4249173A 1972-09-13 1973-08-10 Carburetor intake air flow measuring device Expired GB1398366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9125372A JPS4949659A (en) 1972-09-13 1972-09-13

Publications (1)

Publication Number Publication Date
GB1398366A true GB1398366A (en) 1975-06-18

Family

ID=14021246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4249173A Expired GB1398366A (en) 1972-09-13 1973-08-10 Carburetor intake air flow measuring device

Country Status (4)

Country Link
JP (1) JPS4949659A (en)
DE (1) DE2346178C3 (en)
FR (1) FR2199113B1 (en)
GB (1) GB1398366A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928962A1 (en) * 1996-09-27 1999-07-14 Hino Jidosha Kogyo Kabushiki Kaisha Exhaust gas measuring instrument
CN107387262A (en) * 2017-06-12 2017-11-24 薛美英 Carburetor automatic detecting machine

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2517233C2 (en) * 1975-04-18 1984-03-15 Robert Bosch Gmbh, 7000 Stuttgart Electrically controlled fuel injection system for internal combustion engines
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
JPS5264529A (en) * 1975-11-25 1977-05-28 Toyota Motor Corp Control method and device of fuel enriching device to be mounted on ca r
JPS5356427A (en) * 1976-10-29 1978-05-22 Aisan Ind Co Ltd Air discharge sensor for carbureter
JPS5623551A (en) * 1979-08-02 1981-03-05 Fuji Heavy Ind Ltd Air-fuel ratio controller
DE3238190C2 (en) * 1982-10-15 1996-02-22 Bosch Gmbh Robert Electronic system for controlling or regulating operating parameters of an internal combustion engine
US4750464A (en) * 1987-03-12 1988-06-14 Brunswick Corporation Mass flow fuel injection control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE222165C (en) * 1907-03-12 1910-05-20
FR941804A (en) * 1947-02-15 1949-01-21 Piezo Electricite Soc D Expl D Piezometric device
CH296038A (en) * 1951-03-19 1954-01-31 Bouvier Fernand Device for slaving an organ to a fluid flow.
US3688750A (en) * 1970-04-30 1972-09-05 Physics Int Co Mass flow metered fuel injection system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928962A1 (en) * 1996-09-27 1999-07-14 Hino Jidosha Kogyo Kabushiki Kaisha Exhaust gas measuring instrument
EP0928962A4 (en) * 1996-09-27 2004-06-16 Hino Motors Ltd Exhaust gas measuring instrument
CN107387262A (en) * 2017-06-12 2017-11-24 薛美英 Carburetor automatic detecting machine

Also Published As

Publication number Publication date
FR2199113A1 (en) 1974-04-05
FR2199113B1 (en) 1976-07-23
DE2346178A1 (en) 1974-04-25
DE2346178B2 (en) 1980-05-22
DE2346178C3 (en) 1981-01-22
JPS4949659A (en) 1974-05-14

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee