US3796200A - Fuel injection apparatus - Google Patents

Fuel injection apparatus Download PDF

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Publication number
US3796200A
US3796200A US00322382A US32238273A US3796200A US 3796200 A US3796200 A US 3796200A US 00322382 A US00322382 A US 00322382A US 32238273 A US32238273 A US 32238273A US 3796200 A US3796200 A US 3796200A
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fuel
movable
air
valve
pressure control
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Expired - Lifetime
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US00322382A
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English (en)
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Heinrich Knapp
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    • 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
    • F02M3/00—Idling devices for carburettors
    • F02M3/08—Other details of idling devices
    • F02M3/09—Valves responsive to engine conditions, e.g. manifold vacuum
    • 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
    • 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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • 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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/23—Fuel aerating devices
    • F02M7/24—Controlling flow of aerating air
    • 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

Definitions

  • This invention relates to a fuel injection apparatus serving a spark plug-ignited internal combustion engine which operates on fuel continuously injected into the suction pipe containing an arbitrarily operable butterfly valve.
  • the apparatus is of the type which includes an air sensor situated in the suction pipe spaced from the butterfly valve and defiectable by and in proportion to the throughgoing air quantities against a normally constant return force. The latter, however, is variable in response to engine variables.
  • the air sensor actuates the movable member of a fuel metering valve disposed in the fuel line for metering fuel quantities which are at a desired ratio with the air quantities.
  • the alteration of the return force is effected by an electromagnet, the magnetic field strength of which and thus the spring bias of a pressure control valve is variable, for example, as a function of the oxygen content in the exhaust gas by means of oxygen sonde.
  • the aforenoted pressure control valve controls the liquid pressure which serves as the return force associated with the air sensor.
  • the exhaust gas of internal combustion engines contains, among others, carbon monoxide, oxides of nitrogen and uncombusted or only partially combusted hydrocarbons which contribute to a substantial extent to air pollution.
  • the exhaust gas is, above its reaction temperature, passed through a catalyzer.
  • the exhaust gas has a composition which makes possible a practically complete conver sion into harmless compounds.
  • the ratio of air to the fuel has to be approximately stoichiometrical which corresponds to an air ratio 7 ⁇ that is close to 1.
  • the pressurized liquid that serves as the return force for the air sensor may be affected as a function of the oxygen content in the exhaust gas of the internal combustion engine by causing the armature of the electromagnet to exert a force on a diaphragm which forms the movable member of the pressure control valve.
  • the magnetic made is maintained at a small value by using nickelcontaining iron. The residual hysteresis of the soft iron,
  • FIG. 1 is a sectional, partially schematic view of a fuel injection apparatus incorporating the invention and FIG. 2 is a diagram of a circuit for controlling the energizing current of the pressure control valve as a function of the oxygen concentration in the exhaust gas.
  • the intake air flows in the direction of the arrow into a suction tube portion 1 and then into a conical suction tube portion 3 in which there is disposed an air sensor 2. Thereafter the intake air flows through a connecting hose 4 into a suction tube portion 5 in which there is disposed an arbitrarily operable butterfly valve 6. Therefrom the intake air flows to one or more cylinders (not shown) of an internal combustion engine (also not shown).
  • the air sensor 2 is formed as a plate disposed normal to the direction of air flow and is movable by and as an approximately linear function of the air quantities flowing through the suction tube. In case ofa constant return force exerted on the air sensor 2 and in case of a constant pressure prevailing upstream of the air sensor 2, the pressure between the air sensor 2 and the butterfly valve 6 will also be constant.
  • the air sensor 2 controls directly a quantity distributor and metering valve 7.
  • a lever 8 which carries the air sensor plate 2 and which is pivotally mounted in a frictionless member at ajoint 9.
  • the lever 8 has an integral lug 10 which actuates the movable valve member 11 of the fuel metering valve 7.
  • the movable valve member 11 is designed as a control plunger. One radial face 12 of the control plunger 11 is exposed to pressurized liquid which serves as the return force for the air sensor 2.
  • Fuel supply is effected by means of a fuel pump 16 which is driven by an electromotor l5 and which draws fuel from a fuel tank 17 and forces it to the metering valve 7 through a conduit 18. From the conduit 18 there extends a conduit 19 containing a pressure limiting valve 20.
  • the fuel is admitted into a channel 21 in the housing of the fuel quantity distributor and metering valve 7.
  • the channel 21 leads to an annular groove 22 of the control plunger 11 and further, through separate branches, to a plurality of chambers 23 (only one shown).
  • Each chamber 23 is bounded by a diaphragm 24, so that one side of a diaphragm 24 is exposed to the fuel pressure prevailing in chambers 23.
  • the annular groove 22 overlaps to a greater or lesser extent control slots 25 which lead through individual channels 26 to separate chambers 27 (only one shown) which are separated from the associated chambers 23 by the diaphragm 24.
  • the diaphragm 24 serves as the movable member of a flat seat valve which, when the fuel injection apparatus is not operating, is maintained in an open position by a spring 29.
  • the diaphragm boxes each formed of a chamber 23 and a chamber 27 and each containing a flat seat valve ensure that independently from the extent of overlap between the annular groove 22 and the control slot 25, that is, independently from the fuel quantities flowing to the fuel injection valves, the pressure drop across the fuel metering components 22, 25 is maintained substantially at a constant value. In this manner it is ensured that the extent of displacement of the control plunger 11 is proportionate to the metered fuel quantities.
  • the pressurized liquid which serves as the constant return force affecting the control plunger 11 is fuel.
  • a conduit 32 which opens into a channel 35 which, in turn, is in communication with a pressure chamber 33.
  • the control plunger 11 projects into the pressure chamber 33 with its radial face 12.
  • a throttle 34 which separates the fuel supply circuit 18 of the quantity distributor and fuel metering valve 7 from the control pressure circuit 32, 35.
  • the fuel is admitted through the channel 35 to a pressure control valve 36 and therefrom the fuel is adapted to flow back into the fuel tank 17 in a depressurized manner through a return conduit 37.
  • the pressure control valve 36 is formed as a flat seat valve having a metallic diaphragm 24 as its movable valve member.
  • the diaphragm 24 clamped between a base body 38 and a housing 39 defines together with a stationary valve seat 40 arranged in the base body 38 the flow passage section of the pressure control valve in its open position.
  • a small motion of the diaphragm 24 suffices to open the full, annular flow passage section of the valve, whereby the throughgoing fuel may return in a depressurized manner into the fuel tank 17 through the return conduit 37.
  • the diaphragm 24 is loaded through supports 43, 44 and an interconnecting member 45 by a leaf spring 46 which is formed as a spider and which is biased in such a manner that it exerts its force in the closing direction of the valve.
  • a movable coil armature 47 which includes a wire coil 48.
  • an annular soft iron core 49 which is joined in an axial direction by an annular permanent magnet 50.
  • a soft iron plate 51 having a core 52 which projects into the movable coil armature 47.
  • the aforedescribed fuel injection apparatus operates as follows:
  • the pump 16 driven by the electromotor draws fuel from the fuel tank 17 and drives it through the conduit 18 to the quantity distributor and metering valve 7. Simultaneously, the internal combustion engine draws intake air through the suction pipe. The air flow causes the air sensor 2 to execute a certain excursion from its position of rest. As a function of the excursion of the air sensor 2 the control plunger 11 is displaced by the lever 8 and, as a result, a larger flow passage section will be opened at the control slots 25.
  • the direct connection between the air sensor 2 and the control plunger 11 ensures a constant ratio of air quantities to the metered fuel quantities.
  • a change of the return force (which is constant by itself) of the air sensor 2 is required as a function of engine variables. This is effected by either sensing the engine variables electronically or after conversion into electric magnitudes they are changed by an electric control apparatus to corresponding current intensities that vary the magnetic field strength of the coil 48. In this manner the movable coil armature 47 is opposed to a greater or lesser extent to the bias of the leaf spring 46. Since the pressure control valve requires only a minimum excursion of its movable valve member for the control of pressure of the return force, the magnetic force, that is, the control current, may be converted directly into pressure.
  • the fuel injection apparatus may, by virtue of an appropriate configuration of the conical suction tube portion 3 designed for a predetermined air ratio A.
  • the conical suction tube portion is designed for an air ratio A that is approximately 1.05, while the readjustment of the air ratio to A l is effected by means of an oxygen sonde illustrated in FIG. 2.
  • the fuel-air mixture is enriched from the lean side.
  • FIG. 2 there is shown a wall 59 which separates a chamber 61 through which flows the exhaust gas of the internal combustion engine, from a chamber 62 which communicates with the ambient atmosphere.
  • the oxygen sonde 60 in such a manner that a contacting material 64, provided on an ion-conductive solid electrolyte 63 communicates at one side 64 with the exhaust gas of the internal combustion engine, that is, with the chamber 61 and on its other side 65 with the ambient atmosphere, that is, with the chamber 62.
  • the oxygen ion-conducting solid electrolyte 63 may be stabilized zirconium dioxide, thorium dioxide or mullite (the latter is a fire and high temperature-resistant material having the formula 3Al O 2SiO2).
  • the members 64 and 65 are porous, gas-pervious foil-like components which are applied in a very thin layer and which may be formed of platinum of high temperature-resistant hard electric material such as tungsten carbide or high temperature-resistant, electrically conductive oxides of the type of Fe O Between the foils 64 and 65 there is generated a certain potential difference which is a function of the oxygen content of the exhaust gases.
  • This potential difference is compared with a reference potential which, in turn, is obtained by means of an appropriately high-resistance (ohmic) voltage divider formed of two resistances 66 and 67.
  • the aforenoted comparison of potentials is effected in an operational amplifier 68.
  • the output voltage of the latter is applied to the base of an emitter follower transistor 69 and thus determines the energizing current of the wire coil 48 of the pressure control valve 36.
  • the butterfly valve 6 shortly before reaching its fully open position, operates a switch 70 having in series a resistance 71.
  • a higher energizing current flowing through the wire coil 48 means a decrease of the return force exerted on the control plunger 11 and thus an increase of the metered fuel quantities.
  • a fuel injection apparatus serving a spark plugignited internal combustion engine operating on fuel continuously injected into the engine suction pipe containing an arbitrarily operable butterfly valve
  • said apparatus being of the type that has (a) a fuel metering valve including a movable valve member disposed in the fuel line of the engine, (b) an air sensor disposed in said suction pipe spaced from said butterfly valve, said air sensor being deflectable by and as a function of the air quantities flowing through said suction pipe, (0) means for exerting areturn force on said air sensor, said last-named means including pressurized liquid, (11) means for connecting said air sensor to said movable valve member to displace the latter for metering fuel quantities that are proportionate to the intake air quantities flowing through said suction pipe, said metered fuel quantities also being a function of the magnitude of said return force, (e) a pressure control valve connected with said means for exerting a return force on said air sensor, said pressure control valve having a movable valve member loaded by spring means for controlling the pressure of said pressur

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  • 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)
US00322382A 1972-01-26 1973-01-10 Fuel injection apparatus Expired - Lifetime US3796200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722203507 DE2203507A1 (de) 1969-12-01 1972-01-26 Kraftstoffeinspritzanlage

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896778A (en) * 1972-05-15 1975-07-29 Johannes Zeyns Apparatus in a combustion engine including a device for continually measuring and individually distributing to a plurality of fuel injection valves the amounts of fuel appropriate to the amounts of combustion air
US3911884A (en) * 1973-09-12 1975-10-14 Hitachi Ltd Fuel injection system
US3930481A (en) * 1972-09-22 1976-01-06 Robert Bosch G.M.B.H. Fuel injection system for internal combustion engines
US3931802A (en) * 1972-09-22 1976-01-13 Robert Bosch G.M.B.H. Fuel injection system for internal combustion engines
US3951121A (en) * 1973-08-03 1976-04-20 Robert Bosch G.M.B.H. Fuel injection system
US3963009A (en) * 1973-05-04 1976-06-15 Societe Industrielle De Brevets Et D'etudes S.I.B.E. Carburation devices for internal combustion engines
US3981288A (en) * 1974-05-13 1976-09-21 Robert Bosch G.M.B.H. Apparatus for reducing the toxic components in the exhaust gas of internal combustion engines
US3999527A (en) * 1974-04-09 1976-12-28 Robert Bosch G.M.B.H. Fuel injection system
US4089313A (en) * 1975-08-05 1978-05-16 Nissan Motor Company, Limited Closed-loop air-fuel mixture control apparatus for internal combustion engines with means for minimizing voltage swing during transient engine operating conditions
US4119072A (en) * 1975-03-07 1978-10-10 Nissan Motor Company, Ltd. Closed loop air fuel ratio control system using exhaust composition sensor
FR2397528A1 (fr) * 1977-07-12 1979-02-09 Ntn Toyo Bearing Co Ltd Appareil d'alimentation de carburant pour moteurs a combustion interne
US4154202A (en) * 1976-06-04 1979-05-15 Pierburg Gmbh & Co. Kg Fuel quantity distributor
US4161933A (en) * 1976-09-03 1979-07-24 Robert Bosch Gmbh Mixture control apparatus for internal combustion engines
US4187816A (en) * 1977-07-20 1980-02-12 Toyota Jidosha Kogyo Kabushiki Kaisha Air-fuel ratio controlling system for an internal combustion engine
CN101349201B (zh) * 2007-07-18 2011-06-08 颜丙仁 维持多缸发动机高效运行的机外装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3543739A (en) * 1967-10-11 1970-12-01 Brev Etudes S I B E De Fuel feed device for an internal combustion engine
US3680535A (en) * 1969-12-01 1972-08-01 Bosch Gmbh Robert Fuel injection system for combustion engines
US3710769A (en) * 1970-01-21 1973-01-16 Bosch Gmbh Robert Fuel injection system for internal combustion engines
US3713430A (en) * 1969-12-01 1973-01-30 Bosch Gmbh Robert Fuel injection system
US3728993A (en) * 1970-12-17 1973-04-24 Bosch Gmbh Robert Fuel injection apparatus including an air sensor and means for the direction-dependent damping of its movement
US3739758A (en) * 1970-11-07 1973-06-19 Bosch Gmbh Robert Regulator mechanism for fuel injection apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3543739A (en) * 1967-10-11 1970-12-01 Brev Etudes S I B E De Fuel feed device for an internal combustion engine
US3680535A (en) * 1969-12-01 1972-08-01 Bosch Gmbh Robert Fuel injection system for combustion engines
US3713430A (en) * 1969-12-01 1973-01-30 Bosch Gmbh Robert Fuel injection system
US3710769A (en) * 1970-01-21 1973-01-16 Bosch Gmbh Robert Fuel injection system for internal combustion engines
US3739758A (en) * 1970-11-07 1973-06-19 Bosch Gmbh Robert Regulator mechanism for fuel injection apparatus
US3728993A (en) * 1970-12-17 1973-04-24 Bosch Gmbh Robert Fuel injection apparatus including an air sensor and means for the direction-dependent damping of its movement

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896778A (en) * 1972-05-15 1975-07-29 Johannes Zeyns Apparatus in a combustion engine including a device for continually measuring and individually distributing to a plurality of fuel injection valves the amounts of fuel appropriate to the amounts of combustion air
US3930481A (en) * 1972-09-22 1976-01-06 Robert Bosch G.M.B.H. Fuel injection system for internal combustion engines
US3931802A (en) * 1972-09-22 1976-01-13 Robert Bosch G.M.B.H. Fuel injection system for internal combustion engines
US3963009A (en) * 1973-05-04 1976-06-15 Societe Industrielle De Brevets Et D'etudes S.I.B.E. Carburation devices for internal combustion engines
US3951121A (en) * 1973-08-03 1976-04-20 Robert Bosch G.M.B.H. Fuel injection system
US3911884A (en) * 1973-09-12 1975-10-14 Hitachi Ltd Fuel injection system
US3999527A (en) * 1974-04-09 1976-12-28 Robert Bosch G.M.B.H. Fuel injection system
US3981288A (en) * 1974-05-13 1976-09-21 Robert Bosch G.M.B.H. Apparatus for reducing the toxic components in the exhaust gas of internal combustion engines
US4119072A (en) * 1975-03-07 1978-10-10 Nissan Motor Company, Ltd. Closed loop air fuel ratio control system using exhaust composition sensor
US4089313A (en) * 1975-08-05 1978-05-16 Nissan Motor Company, Limited Closed-loop air-fuel mixture control apparatus for internal combustion engines with means for minimizing voltage swing during transient engine operating conditions
US4154202A (en) * 1976-06-04 1979-05-15 Pierburg Gmbh & Co. Kg Fuel quantity distributor
US4161933A (en) * 1976-09-03 1979-07-24 Robert Bosch Gmbh Mixture control apparatus for internal combustion engines
FR2397528A1 (fr) * 1977-07-12 1979-02-09 Ntn Toyo Bearing Co Ltd Appareil d'alimentation de carburant pour moteurs a combustion interne
US4187816A (en) * 1977-07-20 1980-02-12 Toyota Jidosha Kogyo Kabushiki Kaisha Air-fuel ratio controlling system for an internal combustion engine
CN101349201B (zh) * 2007-07-18 2011-06-08 颜丙仁 维持多缸发动机高效运行的机外装置

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Publication number Publication date
JPS4883221A (ru) 1973-11-06
JPS5732208B2 (ru) 1982-07-09

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