GB1336604A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1336604A
GB1336604A GB5643270A GB5643270A GB1336604A GB 1336604 A GB1336604 A GB 1336604A GB 5643270 A GB5643270 A GB 5643270A GB 5643270 A GB5643270 A GB 5643270A GB 1336604 A GB1336604 A GB 1336604A
Authority
GB
United Kingdom
Prior art keywords
fuel
valve
acts
movable part
movement
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
GB5643270A
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 GB1336604A publication Critical patent/GB1336604A/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
    • F02M69/26—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
    • F02M69/22—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
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/48—Arrangement of air sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

1336604 Spray carburetters ROBERT BOSCH GmbH 27 Nov 1970 [1 Dec 1969] 56432/70 Heading F1B Fuel injection system for and I.C. engine having separate ignition and continuous injection into the inlet manifold comprises a gauging element and a throttle valve in series in the inlet manifold, the gauging element consisting of a disc fixed at one end of a balanced rocking lever arranged across the direction of air flow and which is displaced against a restoring force through a distance proportional to the amount of air flowing through the inlet manifold so that it moves into a section of the inlet pipe which is divergent in the direction of air flow, the movement of the lever controlling the crosssectional area of a fuel-valve passageway to meter an amount of fuel proportional to the airflow. Combustion air is drawn through a filter 2 in a housing 1 and acts on a gauging element 4, moving it into a conical section 3. The air flow is controlled by a butterfly valve 8. Gauging element 4 is fixed to a lever 9, supported on a pivot 10 and counter-balanced by a sliding weight 11 locked by a screw 12. The lever 9 carries a roller 40 which bears on the end of the movable part 15 of a fuel metering valve. Fuel is drawn from a tank 21 by a pump 19 and fed to an annular channel 25 in the meter housing, which communicates with a number of chambers 28 and with the reduced-diameter centre section of the movable part 15. As the part 15 is moved the centre section overlaps ports 31 by which the fuel passes to chambers 32 and hence through passages 33 to the injection nozzles. A diaphragm 29 forms one side of each of the chambers 28 and 32 and also acts as a flap valve for the passages 33, to maintain a constant pressure drop across the valve irrespective of the amount of fuel passing through it. The constant restoring force against which the movable part 15 is displaced is provided by feeding fuel under pressure from the line 22 to a chamber 37, where the fluid pressure acts on the end face 17 of the part 15. A throttle orifice 38 damps the movement of the part 15. The roller 40 acts at a position away from the centre-line of the movable part 15 so that it imparts a rotational movement which reduces friction. In a modification Fig.2 (not shown) the roller 40 is replaced by a lug having a curved surface which modifies the movement of the part 15 to compensate for errors in the fuel-air ratio arising from throttle effects in the induction pipe.
GB5643270A 1969-12-01 1970-11-27 Fuel injection systems Expired GB1336604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1960147 1969-12-01

Publications (1)

Publication Number Publication Date
GB1336604A true GB1336604A (en) 1973-11-07

Family

ID=5752571

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5643270A Expired GB1336604A (en) 1969-12-01 1970-11-27 Fuel injection systems

Country Status (7)

Country Link
US (1) US3628515A (en)
JP (1) JPS5323450B1 (en)
AT (1) AT307807B (en)
ES (1) ES386029A1 (en)
FR (1) FR2072633A5 (en)
GB (1) GB1336604A (en)
SE (1) SE360427B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2062078C3 (en) * 1970-12-17 1978-04-06 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for mixture-compressing spark-ignited internal combustion engines
JPS50219B1 (en) * 1970-04-24 1975-01-07
US3916842A (en) * 1970-10-21 1975-11-04 Bosch Gmbh Robert Fuel injection apparatus for internal combustion engines
DE2054911A1 (en) * 1970-11-07 1972-05-10 Robert Bosch Gmbh, 7000 Stuttgart Control element for a fuel injection system
DE2151187C3 (en) * 1971-10-14 1974-08-01 Dr.-Ing.H.C. F. Porsche Ag, 7000 Stuttgart Mixture preparation system for a multi-cylinder injection internal combustion engine
DE2243925A1 (en) * 1972-09-07 1974-03-14 Bosch Gmbh Robert FUEL METERING SYSTEM FOR MIXED COMPRESSING, EXTERNAL IGNITION COMBUSTION MACHINES
US4043304A (en) * 1973-05-02 1977-08-23 Robert Bosch Gmbh Fuel injection system for self-igniting internal combustion engines
US3951119A (en) * 1973-06-09 1976-04-20 Robert Bosch G.M.B.H. Fuel injection system
DE7333072U (en) * 1973-09-12 1977-01-20 Adam Opel Ag, 6090 Ruesselsheim INTAKE FILTER OR NOISE DAMPERS FOR COMBUSTION MACHINES
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
US3931803A (en) * 1974-01-18 1976-01-13 Asoke Chattopadhayay Fuel quantity manifold for multi-cylinder internal combustion engines
DE2444800A1 (en) * 1974-09-19 1976-04-08 Volkswagenwerk Ag FUEL INJECTION DEVICE FOR MIXTURE COMPRESSING, EXTERNAL IGNITION ENGINE
JPS51105527A (en) * 1975-03-14 1976-09-18 Nippon Soken Nainenkikanno kyunyukukiryokenshutsusochi
US4040405A (en) * 1975-06-10 1977-08-09 Nippon Soken, Inc. Fuel injection system for internal combustion engine
DE2547645C3 (en) * 1975-10-24 1978-11-23 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
DE3240271C2 (en) * 1982-10-30 1986-04-24 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Air flow meter for a continuously operating fuel injection system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1294182A (en) * 1916-05-27 1919-02-11 Louis T Severson Carbureter.
US2318216A (en) * 1942-04-21 1943-05-04 Phillips Petroleum Co Variable fuel orifice carburetor
US2591356A (en) * 1950-05-24 1952-04-01 Jr William L Howe Carbureting mechanism
FR1367573A (en) * 1963-06-08 1964-07-24 Sibe Improvements made to fuel systems for internal combustion engines
FR92542E (en) * 1967-05-30 1968-11-22 Sibe Improvements to carburettors for internal combustion engines

Also Published As

Publication number Publication date
FR2072633A5 (en) 1971-09-24
ES386029A1 (en) 1973-02-16
AT307807B (en) 1973-06-12
JPS5323450B1 (en) 1978-07-14
US3628515A (en) 1971-12-21
SE360427B (en) 1973-09-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years