GB1363739A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1363739A
GB1363739A GB5589171A GB5589171A GB1363739A GB 1363739 A GB1363739 A GB 1363739A GB 5589171 A GB5589171 A GB 5589171A GB 5589171 A GB5589171 A GB 5589171A GB 1363739 A GB1363739 A GB 1363739A
Authority
GB
United Kingdom
Prior art keywords
spring
pressure
engine
valve
responsive element
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
GB5589171A
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
Priority claimed from DE19712100935 external-priority patent/DE2100935C3/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1363739A publication Critical patent/GB1363739A/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
    • F02M69/16—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
    • F02M69/28—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for cutting-out the fuel supply to the engine or to main injectors during certain operating periods, e.g. deceleration
    • 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
    • F02M69/30—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

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

1363739 Spray carburetters ROBERT BOSCH GmbH 2 Dec 1971 [11 Jan 1971] 55891/71 Addition to 1336606 Heading F1B Fuel injection system for a mixturecompression, spark ignition I. C. engine with continuous injection into the inlet manifold, as claimed in claim 1 of Specification 1336606 has a pressure control valve which varies the pressure of the fluid as a function of engine operating characteristics and has the tension of a closure spring of the valve controlled by a first temperature responsive element and a second temperature responsive element which is arranged to oppose the closure spring for a brief period after starting. The system provides a very rich mixture immediately after the engine has started and the cylinder walls are cold and then reduces the strength of the mixture, while still providing a richer than normal mixture, until the cooling water reaches its operating temperature. The mixture strength is dependent upon the position of a slide valve 12, the endface 13 of which is acted on by the pressure of fuel in a chamber 31. A pipe 50 leads from chamber 31 to a diaphragm valve 57, 58 which acts as a controlled pressure relief valve. The diaphragm is pressed against the duct 57 by a spring 59 which abuts a cup 64 supported by a first temperature responsive element 63, which when cold, effectively reduces the pressure of the spring. The element 63 is responsive to the cooling water temperature. The second temperature responsive element is a bi-metal strip 68, which when cold, acts against the spring. An electrical heater 69 operates as soon as the engine is started and quickly heats the strip 68 so that it bends away from the spring and has no further effect.
GB5589171A 1971-01-11 1971-12-02 Fuel injection systems Expired GB1363739A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712100935 DE2100935C3 (en) 1971-01-11 Fuel injection system for mixture-compressing, externally ignited internal combustion engines with continuous injection into the intake manifold

Publications (1)

Publication Number Publication Date
GB1363739A true GB1363739A (en) 1974-08-14

Family

ID=5795532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5589171A Expired GB1363739A (en) 1971-01-11 1971-12-02 Fuel injection systems

Country Status (10)

Country Link
US (1) US3730155A (en)
JP (1) JPS5440694B1 (en)
BR (1) BR7200128D0 (en)
CS (1) CS157136B4 (en)
ES (1) ES398729A2 (en)
FR (1) FR2122141A6 (en)
GB (1) GB1363739A (en)
IT (1) IT1003022B (en)
SE (1) SE365024B (en)
SU (1) SU513641A3 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2158093C3 (en) * 1971-11-24 1978-09-07 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for mixture-compressing, externally ignited internal combustion engines with continuous injection into the intake manifold
DE2243921A1 (en) * 1972-09-07 1974-03-14 Bosch Gmbh Robert FUEL SUPPLY SYSTEM
DE2327295C3 (en) * 1973-05-29 1978-08-31 Robert Bosch Gmbh, 7000 Stuttgart Fuel supply system for internal combustion engines
US3951119A (en) * 1973-06-09 1976-04-20 Robert Bosch G.M.B.H. Fuel injection system
BR7406441D0 (en) * 1973-08-10 1975-09-09 Bosch Gmbh Robert IMPROVEMENTS IN PRESS-REGULATING VALVE COMMANDED BY DIAPHRAGM
US4100904A (en) * 1973-09-28 1978-07-18 Robert Bosch Gmbh Fuel injection system
DE2349688C3 (en) * 1973-10-03 1980-07-17 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
US3963005A (en) * 1973-10-12 1976-06-15 Robert Bosch G.M.B.H. Fuel supply system
US3931803A (en) * 1974-01-18 1976-01-13 Asoke Chattopadhayay Fuel quantity manifold for multi-cylinder internal combustion engines
DE2403276C3 (en) * 1974-01-24 1981-03-12 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
DE2417129A1 (en) * 1974-04-09 1975-11-06 Bosch Gmbh Robert FUEL INJECTION SYSTEM
DE2514483A1 (en) * 1975-04-03 1976-10-21 Daimler Benz Ag COMBUSTION ENGINE WITH EXTERNAL IGNITION
GB1546074A (en) * 1975-05-15 1979-05-16 Tecalemit Ltd Fuel injection systems for internal combustion engine
US4153018A (en) * 1975-07-31 1979-05-08 Ntn Toyo Bearing Co. Ltd. Air flow measuring device for internal combustion engines
DE2547645C3 (en) * 1975-10-24 1978-11-23 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
DE2641398A1 (en) * 1976-09-15 1978-03-16 Bosch Gmbh Robert DEVICE FOR REGULATING THE COMPOSITION OF THE OPERATING MIXTURE OF A COMBUSTION MACHINE
DE2757248A1 (en) * 1977-12-22 1979-06-28 Porsche Ag FUEL INJECTION SYSTEM FOR MIXED COMPRESSING, EXTERNAL IGNITION ENGINEERING
US4206735A (en) * 1978-08-04 1980-06-10 General Motors Corporation Mechanical throttle body injection apparatus
US4359031A (en) * 1979-03-07 1982-11-16 General Motors Corporation Engine air flow responsive control
JP5539702B2 (en) * 2009-11-25 2014-07-02 ザマ・ジャパン株式会社 Vaporizer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR2122141A6 (en) 1972-08-25
SU513641A3 (en) 1976-05-05
JPS5440694B1 (en) 1979-12-05
SE365024B (en) 1974-03-11
ES398729A2 (en) 1975-05-16
CS157136B4 (en) 1974-08-23
BR7200128D0 (en) 1973-05-03
DE2100935A1 (en) 1972-07-20
US3730155A (en) 1973-05-01
DE2100935B2 (en) 1976-09-16
IT1003022B (en) 1976-06-10

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Legal Events

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