GB1457503A - Carburetters for internal combustion engines - Google Patents

Carburetters for internal combustion engines

Info

Publication number
GB1457503A
GB1457503A GB5567272A GB5567272A GB1457503A GB 1457503 A GB1457503 A GB 1457503A GB 5567272 A GB5567272 A GB 5567272A GB 5567272 A GB5567272 A GB 5567272A GB 1457503 A GB1457503 A GB 1457503A
Authority
GB
United Kingdom
Prior art keywords
valve
orifice
fuel
choke
region
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
GB5567272A
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.)
Rover Co Ltd
Original Assignee
Rover 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 Rover Co Ltd filed Critical Rover Co Ltd
Priority to GB5567272A priority Critical patent/GB1457503A/en
Publication of GB1457503A publication Critical patent/GB1457503A/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
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • F02M7/14—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle
    • F02M7/16—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis
    • F02M7/17—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis by a pneumatically adjustable piston-like element, e.g. constant depression carburettors
    • 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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • F02M3/12—Passageway systems

Abstract

1457503 Spray carburetters BRITISH LEYLAND UK Ltd 14 Dec 1973 [1 Dec 1972] 55672/72 Heading F1H At small throttle openings fuel supply from the fuel jet 14 into the region 4 between the choke 16 and the throttle valve 1 is prevented and fuel is supplied to the region downstream of the valve through an orifice 8. A chamber 7 downstream of the needle-controlled fuel jet 14 communicates with the region upstream of the choke through an orifice 11 and with the orifice 8 through a passage 10 formed in the carburetter body or a thin walled tube surrounded by ambient air. Due to the sonic or near sonic velocity at the orifice 8 at small throttle openings the fuel/air ratio of the mixture delivered by the orifice remains substantially constant with changes in ambient temperature as the result of changes in the degree of evaporation of fuel in the passage 10. The seal (26), Fig. 2 (not shown), carried by the choke piston (25) may be flexible so that the chamber (27) downstream of the fuel orifice (24) is sealed from the choke over a portion of the lift of the choke piston. A valve (17) is arranged to admit air to the region 4 when the valve 1 is minimally open. The valve 17 may be operated by the accelerator pedal to close when the pedal is initially moved to open the valve 1. Lost-motion may be provided in the pedal linkage to the valve 1. The valve 17 may be operated by a solenoid energized by a switch operated by the pedal or by a diaphragm against the bias of a spring and subject to the intake manifold depression when the valve 1 is minimally open. The valve 17 may co-operate with two seats so that air is admitted under idling vacuum but not admitted at overrunning. The carburetter may be of the type described in Specification 1278292 and may have an over-running valve associated with the valve 1 as in Specification 1146772.
GB5567272A 1972-12-01 1972-12-01 Carburetters for internal combustion engines Expired GB1457503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5567272A GB1457503A (en) 1972-12-01 1972-12-01 Carburetters for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5567272A GB1457503A (en) 1972-12-01 1972-12-01 Carburetters for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1457503A true GB1457503A (en) 1976-12-01

Family

ID=10474551

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5567272A Expired GB1457503A (en) 1972-12-01 1972-12-01 Carburetters for internal combustion engines

Country Status (1)

Country Link
GB (1) GB1457503A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302404A (en) * 1978-10-20 1981-11-24 Toyota Jidosha Kogyo Kabushiki Kaisha Variable Venturi carburetor
US4444695A (en) * 1981-08-27 1984-04-24 Toyota Jidosha Kogyo Kabushiki Kaisha Variable venturi carburetor
JPS61197240U (en) * 1985-05-30 1986-12-09
CN107314109A (en) * 2017-07-25 2017-11-03 航天推进技术研究院 For organic working medium turbine gear-box TRT axle sealing system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302404A (en) * 1978-10-20 1981-11-24 Toyota Jidosha Kogyo Kabushiki Kaisha Variable Venturi carburetor
US4444695A (en) * 1981-08-27 1984-04-24 Toyota Jidosha Kogyo Kabushiki Kaisha Variable venturi carburetor
JPS61197240U (en) * 1985-05-30 1986-12-09
CN107314109A (en) * 2017-07-25 2017-11-03 航天推进技术研究院 For organic working medium turbine gear-box TRT axle sealing system
CN107314109B (en) * 2017-07-25 2023-06-09 航天推进技术研究院 Shaft sealing system for organic working medium turbine-gear box power generation device

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee