GB1399391A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1399391A
GB1399391A GB4279572A GB4279572A GB1399391A GB 1399391 A GB1399391 A GB 1399391A GB 4279572 A GB4279572 A GB 4279572A GB 4279572 A GB4279572 A GB 4279572A GB 1399391 A GB1399391 A GB 1399391A
Authority
GB
United Kingdom
Prior art keywords
valve
spool
dependence
primary spring
seat
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
GB4279572A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1399391A publication Critical patent/GB1399391A/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
    • 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
    • F02M69/16—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
    • F02M69/16—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

1399391 Spray carburetters ROBERT BOSCH GmbH 15 Sept 1972 [17 Sept 1971] 42795/72 Addition to 1336606 Heading F1B A fuel injection system for mixturecompressing, spark ignition, internal combustion engines having continuous injection into the inlet manifold as claimed in Claim 1 of Specification 1336606 in which the return force is regulated by a flat-seat valve having a diaphragm serving as a movable valve member, the initial stress of a primary spring in the flat-seat valve loading the movable valve member being variable in dependence upon engine operating characteristics and the initial stress of a secondary spring opposing the primary spring being variable in dependence upon the amount of oxygen present in the exhaust gas of the I.C. engine. The system includes a measuring element 3 which moves in a conical portion 2 of the intake pipe in dependence upon the air-flow and which, through its mounting arm 8, moves the spool 11 of a fuel metering valve 7. The movement of the spool is opposed by fluid pressure in a chamber 34 enclosing the end face 12 of the spool. The fluid is fuel taken through a throttle 35, from the main fuel line 17, which is fed by a pump 15 from a tank 16. The pressure in the line 33 is regulated by a valve 37 which comprises a diaphragm 41 and a fixed valve seat 42, and controls the flow of fluid from the line 36 back to the tank 16. The diaphragm 41 is pressed against the valve seat by a primary spring 43, which also abuts a flange on a cup member 47. The position of the cup is varied by a push-rod 46 which bears on a cam 44 mounted on the spindle 45 of the throttle valve 6, so that the position of the cup is representative of the engine operating conditions. A secondary spring 48 opposes the primary spring and at one end abuts an internal shoulder in an armature 49 which is free to slide on a sleeve 50, inside a solenoid coil 51. An oxygen probe in the exhaust gas stream controls the current flow to the coil 51, so that the solenoid is either energized, resulting in enrichment of the mixture being supplied, or is de-energized.
GB4279572A 1971-09-17 1972-09-15 Fuel injection systems Expired GB1399391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2146506A DE2146506C3 (en) 1971-09-17 1971-09-17 Fuel injection system for mixture-compressing, externally ignited internal combustion engines with continuous injection into the intake manifold

Publications (1)

Publication Number Publication Date
GB1399391A true GB1399391A (en) 1975-07-02

Family

ID=5819843

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4279572A Expired GB1399391A (en) 1971-09-17 1972-09-15 Fuel injection systems

Country Status (9)

Country Link
US (1) US3842813A (en)
JP (1) JPS5521174B2 (en)
CS (1) CS158158B4 (en)
DE (1) DE2146506C3 (en)
FR (1) FR2154101A6 (en)
GB (1) GB1399391A (en)
IT (1) IT1045211B (en)
SE (1) SE371861B (en)
SU (1) SU545269A4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001129A (en) * 1977-07-12 1979-01-24 Ntn Toyo Bearing Co Ltd Fuel feeding apparatus for internal combustion engine

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2246546C2 (en) * 1972-09-22 1984-12-06 Robert Bosch Gmbh, 7000 Stuttgart Fuel metering valve of a fuel injection system for mixture-compressing spark-ignited internal combustion engines
DE2246547C2 (en) * 1972-09-22 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for mixture-compressing internal combustion engines
US3974809A (en) * 1973-03-16 1976-08-17 Robert Bosch G.M.B.H. Fuel injection system for spark plug-ignited internal combustion engines with compression of the air-fuel mixture
FR2239600B1 (en) * 1973-08-01 1976-06-18 Sibe
FR2240357B1 (en) * 1973-08-10 1978-09-15 Bosch Gmbh Robert
DE2349631C2 (en) * 1973-10-03 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
DE2349688C3 (en) * 1973-10-03 1980-07-17 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
DE2349616B2 (en) * 1973-10-03 1977-12-08 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION SYSTEM FOR COMBUSTION ENGINES
DE2357263C2 (en) * 1973-11-16 1975-03-20 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for internal combustion engines
DE2412808A1 (en) * 1974-03-16 1975-09-25 Bosch Gmbh Robert FUEL INJECTION SYSTEM
DE2403276C3 (en) * 1974-01-24 1981-03-12 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
US3993032A (en) * 1974-05-13 1976-11-23 Robert Bosch G.M.B.H. Fuel injection systems
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
FR2280800A1 (en) * 1974-08-01 1976-02-27 Sibe IMPROVEMENTS TO POWER SUPPLIES FOR INTERNAL COMBUSTION ENGINES
DE2502153A1 (en) * 1975-01-21 1976-07-22 Bosch Gmbh Robert FUEL INJECTION SYSTEM
US4114579A (en) * 1975-02-20 1978-09-19 Robert Bosch Gmbh Fuel-air-mixtures controller for internal combustion engines
JPS51124734A (en) * 1975-04-22 1976-10-30 Nissan Motor Co Ltd A fuel supplying apparatus in combustion engines
JPS523925A (en) * 1975-06-25 1977-01-12 Nippon Soken Inc Fuel control device for internal combustion engine
DE2549104A1 (en) * 1975-11-03 1977-05-05 Volkswagenwerk Ag FUEL CONVEYOR
DE7629406U1 (en) * 1976-09-21 1978-03-16 Robert Bosch Gmbh, 7000 Stuttgart VALVE WITH AN ADJUSTMENT DEVICE
US4297981A (en) * 1977-04-05 1981-11-03 Ntn Toyo Bearing Company, Limited Fuel flow rate measuring device
JPS5420222A (en) * 1977-07-15 1979-02-15 Toyota Motor Corp Fuel-supplying device for internal combustion engine
DE3014033C2 (en) * 1980-04-11 1984-04-26 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Fuel injection system for mixture-compressing, externally ignited internal combustion engines with continuous injection into the intake manifold
US6951536B2 (en) 2001-07-30 2005-10-04 Olympus Corporation Capsule-type medical device and medical system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001129A (en) * 1977-07-12 1979-01-24 Ntn Toyo Bearing Co Ltd Fuel feeding apparatus for internal combustion engine
GB2001129B (en) * 1977-07-12 1982-08-04 Ntn Toyo Bearing Co Ltd FUEL FEEDING APPARATUS FOR air fuel combustion mixture

Also Published As

Publication number Publication date
FR2154101A6 (en) 1973-05-04
DE2146506B2 (en) 1977-10-13
IT1045211B (en) 1980-05-10
SE371861B (en) 1974-12-02
JPS5521174B2 (en) 1980-06-07
DE2146506C3 (en) 1978-06-08
US3842813A (en) 1974-10-22
DE2146506A1 (en) 1973-03-29
JPS4837517A (en) 1973-06-02
CS158158B4 (en) 1974-10-15
SU545269A4 (en) 1977-01-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]