GB1374444A - Fuel injection systems for internal combustion engines - Google Patents

Fuel injection systems for internal combustion engines

Info

Publication number
GB1374444A
GB1374444A GB5146171A GB5146171A GB1374444A GB 1374444 A GB1374444 A GB 1374444A GB 5146171 A GB5146171 A GB 5146171A GB 5146171 A GB5146171 A GB 5146171A GB 1374444 A GB1374444 A GB 1374444A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
air
pressure
fuel
downstream
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
GB5146171A
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 GB1374444A publication Critical patent/GB1374444A/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
    • F02M69/16—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
    • F02M69/30—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)
  • Fuel-Injection Apparatus (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

1374444 Fluid-pressure servomotive systems ROBERT BOSCH GmbH 5 Nov 1971 [7 Nov 1970] 51461/71 Heading G3P [Also in Division F1] The pressure acting on the end-face 9 of a spool 6, controlling the delivery of fuel through metering slots 21 to a plurality of fuel injectors and acting on the pivoted lever 4 of an air-flow measuring element 2 in an I.C. engine intake manifold I to provide a restoring force for the element, is controlled by a pressure regulator 33. The regulator has a diaphragm 37 co-operating with a valve seat 36 to define a valve controlling fuel-flow from a pump 10 back to a tank 12. The diaphragm 37 is connected by a pin 38 to a diaphragm 39 biased by a spring 40 and subjected on opposite sides to the air-pressures upstream and downstream of the element 2. The diaphragm 37 is subjected to the upstream air-pressure and the fuel pressures upstream and downstream of the seat 36 over differential areas. The force exerted by the spring 40 may be controlled by a member 50 which increases the spring force with increasing engine temperature, a three-dimensional cam (53), Fig.2 (not shown) positioned in accordance with throttle valve position and the vacuum downstream of the throttle valve 3, a cam plate (63), Fig.3 (not shown), moved axially in accordance with the vacuum or a cam (66), Fig.4 (not shown), rotated with the throttle valve. To maintain the pressure across the slots 21 substantially constant a diaphragm 20, subjected in chambers 18, 19 to the pressures upstream and downstream of the slots, provides the movable part of valves controlling fuel-flow to the ducts 23. The air-flow measuring element may be a piston displaceable transversely to the direction of air-flow. Reference has been directed by the Comptroller to Specification 1231967 and 1250345.
GB5146171A 1970-11-07 1971-11-05 Fuel injection systems for internal combustion engines Expired GB1374444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702054911 DE2054911A1 (en) 1970-11-07 1970-11-07 Control element for a fuel injection system

Publications (1)

Publication Number Publication Date
GB1374444A true GB1374444A (en) 1974-11-20

Family

ID=5787488

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5146171A Expired GB1374444A (en) 1970-11-07 1971-11-05 Fuel injection systems for internal combustion engines

Country Status (8)

Country Link
US (1) US3739758A (en)
AT (1) AT309902B (en)
DE (1) DE2054911A1 (en)
ES (1) ES396757A1 (en)
FR (1) FR2113004A5 (en)
GB (1) GB1374444A (en)
IT (1) IT940485B (en)
SE (1) SE363375B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2158119A1 (en) * 1971-11-24 1973-05-30 Bosch Gmbh Robert EXHAUST GAS DETOXIFICATION SYSTEM
DE2203018C3 (en) * 1972-01-22 1974-11-28 Bosch Gmbh Robert Fuel injection system
US3796200A (en) * 1972-01-26 1974-03-12 Heinrich Knapp Fuel injection apparatus
US3951119A (en) * 1973-06-09 1976-04-20 Robert Bosch G.M.B.H. Fuel injection system
DE2333451A1 (en) * 1973-06-30 1975-01-23 Bosch Gmbh Robert FUEL INJECTION SYSTEM FOR MIXED COMPRESSING, EXTERNAL IGNITION STRATIFIC CHARGE COMBUSTION MACHINES
DE2339370B2 (en) * 1973-08-03 1978-04-27 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for mixture-compressing spark-ignited internal combustion engines
US3915138A (en) * 1973-09-22 1975-10-28 Bosch Gmbh Robert Fuel injection system
DE2348859A1 (en) * 1973-09-28 1975-04-10 Bosch Gmbh Robert FUEL INJECTION SYSTEM
DE2349631C2 (en) * 1973-10-03 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
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
US4182298A (en) * 1976-06-25 1980-01-08 Robert Bosch Gmbh Warm-up control apparatus for a fuel supply system
US4404947A (en) * 1981-03-10 1983-09-20 Swanson Wayne A Vapor/air control system
DE3237963C2 (en) * 1982-10-13 1986-02-20 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Continuously working fuel injection system
GB8709773D0 (en) * 1987-04-24 1987-05-28 Collins Motor Corp Ltd Fuel delivery systems
US5711901A (en) * 1996-06-05 1998-01-27 Walbro Corporation Carburetor having temperature-compensated purge/primer
FR2795139B1 (en) * 1999-06-18 2001-07-20 Efs Sa DEVICE FOR INSTANTLY ANALYZING THE CUT-BY-CUT INJECTION FLOW PROVIDED BY AN INJECTION SYSTEM USED IN A HEAT ENGINE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937858A (en) * 1957-04-11 1960-05-24 Acf Ind Inc Injection system
US2997036A (en) * 1958-07-30 1961-08-22 Chrysler Corp Fuel injection system
US3013545A (en) * 1959-06-01 1961-12-19 Chrysler Corp Fuel injection system
AT293103B (en) * 1968-01-05 1971-09-27 Bosch Gmbh Robert Fuel injection system
US3628515A (en) * 1969-12-01 1971-12-21 Bosch Gmbh Robert Measuring device for a fuel injection system
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
DE2054911A1 (en) 1972-05-10
FR2113004A5 (en) 1972-06-23
SE363375B (en) 1974-01-14
ES396757A1 (en) 1974-04-16
US3739758A (en) 1973-06-19
AT309902B (en) 1973-09-10
IT940485B (en) 1973-02-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee