GB1411051A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1411051A
GB1411051A GB383173A GB383173A GB1411051A GB 1411051 A GB1411051 A GB 1411051A GB 383173 A GB383173 A GB 383173A GB 383173 A GB383173 A GB 383173A GB 1411051 A GB1411051 A GB 1411051A
Authority
GB
United Kingdom
Prior art keywords
valve
coil
armature
chamber
engine
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
GB383173A
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 DE19691960146 external-priority patent/DE1960146C/en
Priority claimed from DE19712133434 external-priority patent/DE2133434C3/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1411051A publication Critical patent/GB1411051A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/1484—Output circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/182—Circuit arrangements for generating control signals by measuring intake air flow for the control of a fuel injection device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/09—Other ways of controlling

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)
  • Magnetically Actuated Valves (AREA)

Abstract

1411051 Regulating I C engine fuel supply ROBERT BOSCH GmbH 25 Jan 1973 [26 Jan 1972] 3831/73 Addition to 1395526 Heading F1B A fuel injection system for mixture compressing I.C. engines having continuous injection into the intake manifold and separate ignition as claimed in claim 1 of Specification 1395526 is modified in that the electromagnet of the pressure regulating valve consists of a permanent magnet with a moving coil armature. The air-flow into the induction pipe 1, 4, 5 of an engine displaces a measuring element 2, mounted on a pivoted arm 8, which causes sliding movement of a valve spool 11 of a metering valve 7. The spool movement is opposed by the pressure of fuel in a chamber 33, which encloses the end-face 12 of the spool. The pressure in the chamber 33 is controlled by a regulating valve 36, which is connected to the chamber by a passage 35. The regulating valve consists of a valve seat 40 which co-operates with a diaphragm 24 to control the flow of fuel from the passage 35 to a drain line 37. The diaphragm is biased towards the valve seat by a leaf-spring 46 which acts through an intermediate member 45. The leafspring also acts as a mounting for an armature 47 which carries a coil 48. The magnetic circuit associated with the armature consists of a soft iron ring 49, a ring-shaped permanent magnet 50 and a soft iron plate 51 having a core 52 which projects into the armature. When current flows in the coil 48, the armature tends to move in a direction to open the valve 40, 24 against the bias of the leaf-spring 46. The magnitude of the current flow in the coil is determined by an oxygen probe in the exhaust system of the engine. The electrical signal produced by the probe is compared with a reference voltage in a transistorized amplifier circuit and produces a current flow in the coil 48 which opens the valve 40, 24, reduces the pressure in the chamber 33 and enriches the mixture to stoichiometric, the measuring element 2 being adjusted to provide a basic lean mixture. As the driver controlled throttle valve (not shown) approaches the full throttle position an electrical switch is closed which increases the current flowing in the coil 48 to provide a rich mixture for full throttle operation of the engine.
GB383173A 1969-12-01 1973-01-25 Fuel injection systems Expired GB1411051A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19691960146 DE1960146C (en) 1969-12-01 Fuel injection system with continuous injection into the intake manifold of mixture-compressing foreign-ignited internal combustion engines
DE19712133434 DE2133434C3 (en) 1969-12-01 1971-07-05 Fuel injection system with continuous injection into the intake manifold of mixture-compressing spark-ignited internal combustion engines
DE19722203507 DE2203507A1 (en) 1969-12-01 1972-01-26 FUEL INJECTION SYSTEM

Publications (1)

Publication Number Publication Date
GB1411051A true GB1411051A (en) 1975-10-22

Family

ID=42077836

Family Applications (2)

Application Number Title Priority Date Filing Date
GB56431/70A Expired GB1283860A (en) 1969-12-01 1970-11-27 Improvements in fuel injection systems
GB383173A Expired GB1411051A (en) 1969-12-01 1973-01-25 Fuel injection systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB56431/70A Expired GB1283860A (en) 1969-12-01 1970-11-27 Improvements in fuel injection systems

Country Status (10)

Country Link
US (1) US3703888A (en)
JP (1) JPS4946671B1 (en)
AT (1) AT307809B (en)
BE (1) BE759679A (en)
DE (1) DE2203507A1 (en)
ES (1) ES386028A1 (en)
FR (1) FR2072531A5 (en)
GB (2) GB1283860A (en)
NL (1) NL7017465A (en)
SE (1) SE362119B (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2124553C3 (en) * 1971-05-18 1979-04-05 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for mixture-compressing, externally ignited internal combustion engines with continuous injection into the intake manifold
US3765387A (en) * 1971-07-05 1973-10-16 Bosch Gmbh Robert Fuel injection apparatus
AT313646B (en) * 1971-07-09 1974-02-25 Johannes Zeyns Dr Ing Device on internal combustion engines with a device for continuously measuring the quantities of combustion air drawn in and for measuring and evenly distributing the fuel quantities to be allocated to several injection valves assigned to several cylinders
DE2203018C3 (en) * 1972-01-22 1974-11-28 Bosch Gmbh Robert Fuel injection system
DE2243925A1 (en) * 1972-09-07 1974-03-14 Bosch Gmbh Robert FUEL METERING SYSTEM FOR MIXED COMPRESSING, EXTERNAL IGNITION COMBUSTION MACHINES
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
FR2239600B1 (en) * 1973-08-01 1976-06-18 Sibe
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
DE2357263C2 (en) * 1973-11-16 1975-03-20 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for internal combustion engines
US3993032A (en) * 1974-05-13 1976-11-23 Robert Bosch G.M.B.H. Fuel injection systems
DE2547645C3 (en) * 1975-10-24 1978-11-23 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
DE2621555A1 (en) * 1976-05-14 1977-12-01 Bosch Gmbh Robert FUEL INJECTION SYSTEM
DE2656538C2 (en) * 1976-12-14 1985-07-11 Audi AG, 8070 Ingolstadt Fuel injection system
US4208358A (en) * 1977-05-27 1980-06-17 General Motors Corporation Carburetor and method of calibration
JPS5412464U (en) * 1977-06-28 1979-01-26
US4178332A (en) * 1978-01-11 1979-12-11 General Motors Corporation Carburetor and method of calibration
US4175103A (en) * 1978-04-17 1979-11-20 General Motors Corporation Carburetor
US4217314A (en) * 1978-06-26 1980-08-12 General Motors Corporation Carburetor and method of operation
JPS5841232A (en) * 1981-09-02 1983-03-10 Hitachi Ltd Control apparatus for fuel injection pump of the type capable of changing number of operative cylinders
US5341785A (en) * 1992-07-20 1994-08-30 Echlin, Inc. Fuel delivery system for internal combustion engines
CN102080581B (en) * 2010-08-10 2013-10-16 深圳市海利科科技开发有限公司 Control system for controlling screw expansion power machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594494A (en) * 1945-06-12 1947-11-12 Richard Garratt Ellis Improvements in variable jet carburettors for variable speed internal combustion engines
GB515040A (en) * 1938-02-23 1939-11-24 Self Priming Pump And Engineer Improvements in and relating to carburettors for internal combustion engines
US2600368A (en) * 1945-06-02 1952-06-10 Bendix Aviat Corp Charge forming device

Also Published As

Publication number Publication date
DE1960146A1 (en) 1971-07-22
AT307809B (en) 1973-06-12
ES386028A1 (en) 1973-02-16
BE759679A (en) 1971-04-30
US3703888A (en) 1972-11-28
FR2072531A5 (en) 1971-09-24
DE2203507A1 (en) 1973-08-02
SE362119B (en) 1973-11-26
NL7017465A (en) 1971-06-03
JPS4946671B1 (en) 1974-12-11
GB1283860A (en) 1972-08-02

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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