GB1406305A - Fuel injection systems - Google Patents
Fuel injection systemsInfo
- Publication number
- GB1406305A GB1406305A GB5423272A GB5423272A GB1406305A GB 1406305 A GB1406305 A GB 1406305A GB 5423272 A GB5423272 A GB 5423272A GB 5423272 A GB5423272 A GB 5423272A GB 1406305 A GB1406305 A GB 1406305A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- valve
- engine
- fuel
- pressure
- 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
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
- 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
- F02M69/32—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 with an air by-pass around the air throttle valve or with an auxiliary air passage, e.g. with a variably controlled valve therein
-
- 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
- F02M69/22—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 comprising a member movably mounted in the air intake conduit and displaced according to the quantity of air admitted to the engine
-
- 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
- F02M69/38—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 fuel pressure, e.g. by varying fuel pressure in the control chambers of the fuel metering device
- F02M69/386—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 fuel pressure, e.g. by varying fuel pressure in the control chambers of the fuel metering device variably controlling the pressure of the fuel by-passing the metering valves, e.g. by valves responsive to signals of temperature or oxygen sensors
-
- 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)
- Analytical Chemistry (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
1406305 Spray carburetters ROBERT BOSCH GmbH 23 Nov 1972 [24 Nov 1971] 54232/72 Addition to 1336606 Heading F1B A fuel injection system for mixture compression, spark ignition I.C. engines with continuous injection into the inlet manifold, as claimed in Claim 1 of Specification 1336606 in which the pressure of the fluid is variable by means of at least one pressure control valve operable as a function of engine operating conditions, a first temperature responsive control element being arranged to control the tension of a closure spring of the pressure control valve, the effective force of the spring being additionally variable in dependence upon the inlet manifold pressure downstream of the throttle valve during heating up of the engine, a second temperature responsive element being arranged to oppose said spring for a brief period after starting the engine. Combustion air enters an inlet 1 and causes movement of a measuring element 2 attached to a lever 11, pivotally mounted at 12, the movement being linearly proportional to the air-flow. A boss 13 on the lever actuates the spool 14 of a fuel metering valve 10, the movement of the spool being opposed by the pressure of fuel in a chamber 38, into which the end-face of the spool projects. The fuel in this chamber is drawn from a pump-fed fuel line 21, through a fixed throttle 39. A line 40 leads to a pressure control valve 41, the effect of this valve being that when it operates to reduce the pressure in chamber 38 the engine receives a richer-than-normal mixture. The valve 41 consists of a diaphragm 44 which closes the end of a tube 43 and which is pressed against the tube by a spring 45. Fuel which is allowed to escape through the tube 43 drains to a tank 20 by a line 42. The spring is held between a cup 50 and a plate 53 having a projection which engages a recess in a member 54 attached to the diaphragm. The initial compression of the spring determines the pressure at which fuel begins to pass the valve 43, 44. The force exerted by the spring is modified by movement of the cup 50 which is mounted on the movable part of a temperature responsive element 52 which acts to move the cup to the right in Fig. 1 when the engine coolant liquid is cold, thus reducing the spring force. The spring force is opposed by a bi-metal spring 56, one end of which enters a slot 55 through the plate and which carries a stud 64 which presses on the plate. The other end of the spring is held in an electrically powered heater 57, which is energized when the ignition is switched on. The opposing force of the spring 56 decreases as the spring is heated and bends in a direction to move the stud 64 away from the plate 53. This occurs shortly after the engine has been started so that the amount of extra fuel injected is reduced to that necessary to keep the engine running during the warming-up period. The amount of air reaching the engine is increased by a duct 48, 49 which by-passes the throttle valve 7 and which is opened when the cup 50 is withdrawn clear of the ports 48, 49 in the body of the valve 41. The spring 56 is also used to modify the force of the spring 45 in dependence on the vacuum in the manifold downstream of the throttle valve. To achieve this the spring is connected by a rod 59 to a diaphragm 60 which closes one side of a box 61, the interior of which is connected by a pipe 62, including an adjustable restrictor 63, to the inlet manifold at a point which is downstream of the throttle by a distance which ensures that once the throttle valve 7 has moved through 10 degrees from its normally closed position, the end of the pipe 62 is no longer subject to vacuum. When the spring 56 has been fully heated, the stud 64 is no longer in contact with the plate 53, so that the effect of inlet manifold vacuum ceases.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2158093A DE2158093C3 (en) | 1971-11-24 | 1971-11-24 | Fuel injection system for mixture-compressing, externally ignited internal combustion engines with continuous injection into the intake manifold |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1406305A true GB1406305A (en) | 1975-09-17 |
Family
ID=5825911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5423272A Expired GB1406305A (en) | 1971-11-24 | 1972-11-23 | Fuel injection systems |
Country Status (6)
Country | Link |
---|---|
US (1) | US3791359A (en) |
JP (1) | JPS5624096B2 (en) |
DE (1) | DE2158093C3 (en) |
FR (1) | FR2163035A6 (en) |
GB (1) | GB1406305A (en) |
IT (1) | IT1045033B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4182298A (en) * | 1976-06-25 | 1980-01-08 | Robert Bosch Gmbh | Warm-up control apparatus for a fuel supply system |
GB2138499A (en) * | 1983-02-25 | 1984-10-24 | Porsche Ag | I c engine propulsion arrangement for an aircraft |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2241936C3 (en) * | 1972-08-25 | 1979-02-01 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel metering system for internal combustion engines |
DE2339370B2 (en) * | 1973-08-03 | 1978-04-27 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system for mixture-compressing spark-ignited internal combustion engines |
FR2240357B1 (en) * | 1973-08-10 | 1978-09-15 | Bosch Gmbh Robert | |
DE2346099A1 (en) * | 1973-09-13 | 1975-03-27 | Bosch Gmbh Robert | FUEL INJECTION SYSTEM |
DE2349631C2 (en) * | 1973-10-03 | 1984-10-04 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system |
DE2403276C3 (en) * | 1974-01-24 | 1981-03-12 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system |
DE2423109A1 (en) * | 1974-05-13 | 1975-12-04 | Bosch Gmbh Robert | FUEL INJECTION SYSTEM |
DE2425021C2 (en) * | 1974-05-24 | 1983-12-22 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system |
DE2444598C2 (en) * | 1974-09-18 | 1982-12-16 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system |
US4112900A (en) * | 1975-05-07 | 1978-09-12 | Robert Bosch Gmbh | Fuel injection system |
US4062336A (en) * | 1975-05-19 | 1977-12-13 | Cummins Engine Company, Inc. | Fuel control valve |
DE2544810C2 (en) * | 1975-10-07 | 1982-04-15 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection system |
DE2544800A1 (en) * | 1975-10-07 | 1977-04-21 | Bosch Gmbh Robert | FUEL INJECTION SYSTEM |
JPS5412464U (en) * | 1977-06-28 | 1979-01-26 | ||
US4359031A (en) * | 1979-03-07 | 1982-11-16 | General Motors Corporation | Engine air flow responsive control |
DE3006631C2 (en) * | 1980-02-22 | 1983-08-25 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Fuel injection device for a spark-ignition internal combustion engine |
DE3026826C2 (en) * | 1980-07-16 | 1984-04-26 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Fuel injection device for a spark-ignition piston internal combustion engine |
US4421089A (en) * | 1982-07-19 | 1983-12-20 | The Bendix Corporation | Fuel metering apparatus |
DE3415711C2 (en) * | 1984-04-27 | 1986-04-03 | Daimler-Benz Ag, 7000 Stuttgart | Mechanical injection system with air volume measurement for an internal combustion engine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE759677A (en) * | 1969-12-01 | 1971-04-30 | Bosch Gmbh Robert | INSTALLATION OF CONTINUOUS INJECTION OF FUEL IN THE SUCTION TUBE, ESPECIALLY OF INTERNAL COMBUSTION ENGINES WITH MIXTURE COMPRESSION AND IGNITION DEVICE CONTROLLED FROM THE EXTERNAL |
GB1363739A (en) * | 1971-01-11 | 1974-08-14 | Bosch Gmbh Robert | Fuel injection systems |
-
1971
- 1971-11-24 DE DE2158093A patent/DE2158093C3/en not_active Expired
-
1972
- 1972-11-23 GB GB5423272A patent/GB1406305A/en not_active Expired
- 1972-11-23 IT IT32023/72A patent/IT1045033B/en active
- 1972-11-23 FR FR7241678A patent/FR2163035A6/fr not_active Expired
- 1972-11-24 US US00308986A patent/US3791359A/en not_active Expired - Lifetime
- 1972-11-24 JP JP11789472A patent/JPS5624096B2/ja not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4182298A (en) * | 1976-06-25 | 1980-01-08 | Robert Bosch Gmbh | Warm-up control apparatus for a fuel supply system |
GB2138499A (en) * | 1983-02-25 | 1984-10-24 | Porsche Ag | I c engine propulsion arrangement for an aircraft |
Also Published As
Publication number | Publication date |
---|---|
JPS4859219A (en) | 1973-08-20 |
DE2158093A1 (en) | 1973-05-30 |
US3791359A (en) | 1974-02-12 |
FR2163035A6 (en) | 1973-07-20 |
IT1045033B (en) | 1980-04-21 |
DE2158093C3 (en) | 1978-09-07 |
DE2158093B2 (en) | 1977-10-20 |
JPS5624096B2 (en) | 1981-06-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] |