GB2021689A - Controlling carburettors - Google Patents
Controlling carburettorsInfo
- Publication number
- GB2021689A GB2021689A GB7917388A GB7917388A GB2021689A GB 2021689 A GB2021689 A GB 2021689A GB 7917388 A GB7917388 A GB 7917388A GB 7917388 A GB7917388 A GB 7917388A GB 2021689 A GB2021689 A GB 2021689A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuel
- valve
- chamber
- metering valve
- diaphragm
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 abstract 5
- 230000006698 induction Effects 0.000 abstract 2
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
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
- 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
- F02M69/26—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 varying fuel pressure in a fuel by-pass passage, the pressure acting on a throttle valve against the action of metered or throttled fuel pressure for variably throttling fuel flow to injection nozzles, e.g. to keep constant the pressure differential at the metering valve
-
- 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
- F02M69/20—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 the device being a servo-motor, e.g. using engine intake air pressure or vacuum
-
- 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
- F02M69/30—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines
- F02M69/36—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages
- F02M69/40—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages using variably controlled air pressure, e.g. by modifying the intake air vacuum signal acting on the fuel metering device
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
In a carburettor for continuously injecting fuel into an I.C. engine induction passage, an air throttling body 7 is adjustable axially by suction in a chamber 11 ventable to atmosphere and fuel flow is determined by the position of the throttling body 7 when the pressure drop across a fuel-metering valve 4 movable therewith remains constant, the pressure drop being nevertheless variable, by a differential pressure valve 26, in dependence on engine operating conditions. The valve 26 has a diaphragm 34 separating chambers 27, 32 of which chamber 27 forms part of the fuel line downstream of the fuel-metering valve 4, the cross- sectional area of a fuel outlet 29 from the chamber 27 to a nozzle 14 is adjusted by a valve needle 28, fuel at the pressure upstream of the fuel-metering valve 4 acts in the chamber 32, and a force dependent on induction passage suction and engine temperature is applied to the diaphragm 34 of the differential pressure valve 26. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2821874A DE2821874C3 (en) | 1978-05-19 | 1978-05-19 | Fuel supply system with a fuel metering valve for mixture-compressing, externally ignited internal combustion engines with continuous fuel addition into the intake manifold |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2021689A true GB2021689A (en) | 1979-12-05 |
GB2021689B GB2021689B (en) | 1982-06-23 |
Family
ID=6039719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7917388A Expired GB2021689B (en) | 1978-05-19 | 1979-05-18 | Controlling carburettors |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5514993A (en) |
DE (1) | DE2821874C3 (en) |
FR (1) | FR2426160A2 (en) |
GB (1) | GB2021689B (en) |
IT (1) | IT1164001B (en) |
SE (1) | SE7904374L (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5835265A (en) * | 1981-08-25 | 1983-03-01 | Mitsubishi Electric Corp | Device for regulating quantity of fuel-air mixture |
EP0253483A3 (en) * | 1986-07-14 | 1989-04-12 | Cummins Engine Company, Inc. | An air fuel control, and a plunger and barrel assembly for a fuel system, either for an internal combustion engine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH255804A (en) * | 1946-04-09 | 1948-07-15 | Schneebeli Hugo | Carburetor. |
DE2036824A1 (en) * | 1970-07-24 | 1972-01-27 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system for mixture-compressing, spark-ignited internal combustion engines |
DE2346099A1 (en) * | 1973-09-13 | 1975-03-27 | Bosch Gmbh Robert | FUEL INJECTION SYSTEM |
GB1537053A (en) * | 1975-02-07 | 1978-12-29 | British Leyland Uk Ltd | Fuel system for an internal combustion engine |
DE2520322C3 (en) * | 1975-05-07 | 1979-02-15 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system for internal combustion engines |
GB1546074A (en) * | 1975-05-15 | 1979-05-16 | Tecalemit Ltd | Fuel injection systems for internal combustion engine |
DE2529700A1 (en) * | 1975-07-03 | 1977-01-27 | Bosch Gmbh Robert | FUEL SUPPLY SYSTEM |
DE2717230C3 (en) * | 1977-04-19 | 1981-09-24 | Pierburg Gmbh & Co Kg, 4040 Neuss | Fuel supply system with a fuel metering valve for mixture-compressing, externally ignited internal combustion engines with continuous fuel addition into the intake manifold |
-
1978
- 1978-05-19 DE DE2821874A patent/DE2821874C3/en not_active Expired
-
1979
- 1979-05-16 JP JP5920479A patent/JPS5514993A/en active Pending
- 1979-05-18 SE SE7904374A patent/SE7904374L/en not_active Application Discontinuation
- 1979-05-18 GB GB7917388A patent/GB2021689B/en not_active Expired
- 1979-05-18 IT IT49089/79A patent/IT1164001B/en active
- 1979-05-18 FR FR7913299A patent/FR2426160A2/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS5514993A (en) | 1980-02-01 |
IT1164001B (en) | 1987-04-08 |
GB2021689B (en) | 1982-06-23 |
IT7949089A0 (en) | 1979-05-18 |
SE7904374L (en) | 1979-11-20 |
DE2821874C3 (en) | 1981-10-01 |
FR2426160A2 (en) | 1979-12-14 |
DE2821874A1 (en) | 1979-11-22 |
DE2821874B2 (en) | 1981-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |