GB1428392A - Carburation for internal combustion engines - Google Patents

Carburation for internal combustion engines

Info

Publication number
GB1428392A
GB1428392A GB2971272A GB2971272A GB1428392A GB 1428392 A GB1428392 A GB 1428392A GB 2971272 A GB2971272 A GB 2971272A GB 2971272 A GB2971272 A GB 2971272A GB 1428392 A GB1428392 A GB 1428392A
Authority
GB
United Kingdom
Prior art keywords
pressure
float chamber
depression
valve
chamber
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
GB2971272A
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.)
Meakers Realisations Ltd
Original Assignee
Meakers Realisations 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 Meakers Realisations Ltd filed Critical Meakers Realisations Ltd
Priority to GB2971272A priority Critical patent/GB1428392A/en
Publication of GB1428392A publication Critical patent/GB1428392A/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
    • F02M7/10—Other installations, without moving parts, for influencing fuel/air ratio, e.g. electrical means
    • F02M7/11—Altering float-chamber pressure
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

1428392 Spray carburetters BRITISH LEYLAND (AUSTIN-MORRIS) Ltd 14 June 1973 [24 June 1972] 29712/72 Heading FIB A variable choke or constant depression carburetter has its fuel metering head varied in response to air density change arising from barometric pressure change by the application of a sub-ambient pressure to float chamber 21, the pressure in which is controlled by a depression control valve means 26 disposed between a source of sub-ambient pressure 17 and the float chamber, the valve means including a hermetically sealed capsule 42, responsive to barometric pressure, which applies a load via resilient means 44 to a diaphragm 27 defining a chamber 29 coupled by a fluid column 25 to the float chamber. A reduction in ambient pressure causes capsule 42 to expand, which tends to open valve 32 and communicate the float chamber to the constant depression region 17 via tubes 25, 34 reducing the pressure in the float chamber. Valve 36 opens simultaneously with valve 32 to allow air to flow via tubes 30, 39 to mix with the fuel vapour drawn from the float chamber, the circumferences of the valves being chosen in a ratio to give the requisite mixture strength. A valve assembly (not shown) is interposed in line 34 to seal off the constant depression region when the depression therein exceeds that at maximum rated air-flow. This valve assembly comprises a chamber closed by a spring-loaded diaphragm open to atmospheric pressure on one side and to the constant depression region depression on the other. The capsule may contain gas, e.g. nitrogen, so that compensation for density changes arising from both pressure and temperature changes can be made.
GB2971272A 1972-06-24 1972-06-24 Carburation for internal combustion engines Expired GB1428392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2971272A GB1428392A (en) 1972-06-24 1972-06-24 Carburation for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2971272A GB1428392A (en) 1972-06-24 1972-06-24 Carburation for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1428392A true GB1428392A (en) 1976-03-17

Family

ID=10295905

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2971272A Expired GB1428392A (en) 1972-06-24 1972-06-24 Carburation for internal combustion engines

Country Status (1)

Country Link
GB (1) GB1428392A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355171A1 (en) * 1976-06-18 1978-01-13 Serruys Max CARBURETOR
DE2924054A1 (en) * 1979-06-15 1980-12-18 Pierburg Gmbh & Co Kg Carburettor for internal combustion engine - has air passages to vary float chamber pressure to adjust mixture strength

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355171A1 (en) * 1976-06-18 1978-01-13 Serruys Max CARBURETOR
DE2924054A1 (en) * 1979-06-15 1980-12-18 Pierburg Gmbh & Co Kg Carburettor for internal combustion engine - has air passages to vary float chamber pressure to adjust mixture strength

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Legal Events

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