GB1363740A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1363740A
GB1363740A GB5814871A GB5814871A GB1363740A GB 1363740 A GB1363740 A GB 1363740A GB 5814871 A GB5814871 A GB 5814871A GB 5814871 A GB5814871 A GB 5814871A GB 1363740 A GB1363740 A GB 1363740A
Authority
GB
United Kingdom
Prior art keywords
fuel
valve
plate
chamber
port
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
GB5814871A
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 GB1363740A publication Critical patent/GB1363740A/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

Abstract

1363740 Spray carburetters ROBERT BOSCH GmbH 15 Dec 1971 [17 Dec 1970] 58148/71 Addition to 1336606 Heading F1B The fuel injection system claimed in claim 1 of the parent Specification 1336606 is modified in that the distributer valve is a piston movable in the bore of a cylinder, the pressure line connecting to a part of said bore which forms a pressure chamber, via a throttle valve which provides a greater throttle cross-section for pressure fluid in the direction of inflow to the pressure chamber than in the direction of outflow. Plate 2 is moved by the force due to air entering the intake 1, and displaces a fuel distributing valve 11 against a force exerted on the end-face 12 of the valve by fuel in a pressure chamber 34. The fuel reaching the chamber 34 is drawn from the line 17, connected to the output of a fuel pump 15, through a fixed throttle valve 35 and enters the chamber through a port 59, controlled by a throttle valve 57 which includes an axially movable plate 58. The plate 58 has a small central hole 63 aligned with the port 59 and a larger hole 64 off-set from the port 59. When fuel enters the chamber 34 the plate 58 is displaced towards the valve 11 so that fuel flows through both apertures, but flow of fuel in the opposite direction causes the plate to seat against the plate 60 in which the port 59 is formed, so that only the smaller hole 63 is open. The throttle valve 57 prevents the fuel-air ratio increasing at low engine speed, which would otherwise occur due to pulsation in the air supply and in the movement of the plate 2. In a modification Fig. 2 (not shown) the axially movable plate has a triangular periphery, so that when it is displaced, fuel flows around the edges. In a second modification, an apertured reed valve is used, and in a third modification a ball check-valve is used.
GB5814871A 1970-12-17 1971-12-15 Fuel injection systems Expired GB1363740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2062078A DE2062078C3 (en) 1970-12-17 1970-12-17 Fuel injection system for mixture-compressing spark-ignited internal combustion engines

Publications (1)

Publication Number Publication Date
GB1363740A true GB1363740A (en) 1974-08-14

Family

ID=5791233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5814871A Expired GB1363740A (en) 1970-12-17 1971-12-15 Fuel injection systems

Country Status (14)

Country Link
US (1) US3728993A (en)
JP (1) JPS5421891B1 (en)
AU (1) AU449161B2 (en)
BE (1) BE776833R (en)
CS (1) CS157133B4 (en)
DE (1) DE2062078C3 (en)
ES (1) ES398040A2 (en)
FR (1) FR2131294A6 (en)
GB (1) GB1363740A (en)
IT (1) IT972069B (en)
NL (1) NL7117284A (en)
PL (1) PL83049B3 (en)
SE (1) SE365023B (en)
SU (1) SU512721A4 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
BR7406441D0 (en) * 1973-08-10 1975-09-09 Bosch Gmbh Robert IMPROVEMENTS IN PRESS-REGULATING VALVE COMMANDED BY DIAPHRAGM
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
DE2444598C2 (en) * 1974-09-18 1982-12-16 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
US4206735A (en) * 1978-08-04 1980-06-10 General Motors Corporation Mechanical throttle body injection apparatus
US4248188A (en) * 1978-12-29 1981-02-03 Cummins Engine Company, Inc. Hydraulic attenuator for air fuel control pump
DE2904496A1 (en) * 1979-02-07 1980-08-21 Audi Nsu Auto Union Ag FLAT SEAT VALVE FOR A FUEL INJECTION SYSTEM
DE2944469A1 (en) * 1979-11-03 1981-05-14 Robert Bosch Gmbh, 7000 Stuttgart QUANTITY METER
DE2950599A1 (en) * 1979-12-15 1981-06-19 Robert Bosch Gmbh, 7000 Stuttgart VALVE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015548A (en) * 1958-07-28 1962-01-02 Harry W Mcclain Carburetor of the pressure type
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
US3628515A (en) * 1969-12-01 1971-12-21 Bosch Gmbh Robert Measuring device for a fuel injection system

Also Published As

Publication number Publication date
FR2131294A6 (en) 1972-11-10
SE365023B (en) 1974-03-11
DE2062078B2 (en) 1977-08-18
ES398040A2 (en) 1974-07-16
AU449161B2 (en) 1974-06-06
DE2062078A1 (en) 1972-06-22
US3728993A (en) 1973-04-24
JPS5421891B1 (en) 1979-08-02
NL7117284A (en) 1972-06-20
IT972069B (en) 1974-05-20
CS157133B4 (en) 1974-08-23
DE2062078C3 (en) 1978-04-06
PL83049B3 (en) 1975-12-31
AU3695471A (en) 1973-06-21
SU512721A4 (en) 1976-04-30
BE776833R (en) 1972-04-17

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Legal Events

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