US3817229A - Fuel injection apparatus for externally ignited internal combustion engines operating on fuel continuously injected into the suction tube - Google Patents

Fuel injection apparatus for externally ignited internal combustion engines operating on fuel continuously injected into the suction tube Download PDF

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Publication number
US3817229A
US3817229A US00254367A US25436772A US3817229A US 3817229 A US3817229 A US 3817229A US 00254367 A US00254367 A US 00254367A US 25436772 A US25436772 A US 25436772A US 3817229 A US3817229 A US 3817229A
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Prior art keywords
air
fuel
air sensor
valve
intake tube
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US00254367A
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English (en)
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G Stumpp
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Robert Bosch GmbH
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Robert Bosch GmbH
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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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/28—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for cutting-out the fuel supply to the engine or to main injectors during certain operating periods, e.g. deceleration
    • 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
    • F02M69/30—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
    • F02M69/32—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 with an air by-pass around the air throttle valve or with an auxiliary air passage, e.g. with a variably controlled valve therein
    • 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

Definitions

  • ABSIRACT May 18, 1971 Germany 2124553 I order t effectively stop the fuel delivery by a fuel injection apparatus to a vehicle engine when the vehi- 123/97 B 123/1 123/139 cle is coasting in gear, means are provided which auto- 261/50 A matically open a bypass circumventing the air sensor [51] Int. Cl. F02d 9/06 h d fl i f which, as a f ti f the fl [58] Flew of Search 123/139 Aw, 97 B, 119 effects the fuel delivery to the engine) in response to l23/D1G.
  • This invention relates to a fuel injection apparatus for externally ignited internal combustion engines which operate on fuel continuously injected into the suction or air intake tube.
  • the fuel injection apparatus is of the type that has an air sensor and an arbitrarily operable butterfly valve disposed spaced from one another in the air intake tube. The air sensor is moved by and as a function of the through-going air quantities against a return force.
  • the air sensor displaces the movable valve member of a fuel metering and distributor valve disposed in the fuel path. In this manner a fuel metering is effected; the metered fuel quantities are proportionate to the air quantities flowing in the suction tube.
  • the return force affecting the air sensor is supplied by liquid under pressure which is continuously and under constant although arbitrarily variable pressure delivered through a pressure conduit. The pressurized liquid exerts a force on an actuating member which, in turn, is connected to the air sensor.
  • means which, during coasting in gear, establishes direct communication between two locations in the suction tube through a bypass that circumvents the air sensor.
  • the said means includes a valve disposed in said bypass and a mechanism for opening and closing the last-named valve as a function of the vacuum prevailing immediately downstream of the butterfly valve or as a function of the position of the butterfly valve and the tion andschematicallyin part, a fuel injection appara tus incorporating the preferred embodiment.
  • the intake air flows in the direction of the arrows from an air'filter (not shown) through a suction tube section 1 having a conical portion 3 in which there is disposed an air sensor 2, through a tube section 4, a connecting hose 5 and a tube section 6 in which there is located an arbitrarily operable butterfly valve 7.
  • the air sensor 2 includes a plate member 21 which is disposed normal to the air flow and which moves in the conical portion 3 of the air intake tube as an approximately linear function of the air quantities passing therethrough.
  • the pressure between the air sensor 2 and the butterfly valve 7 also'remains constant.
  • the air sensor 2 directly controls a fuel metering and distributor valve 10.
  • the air sen sor 2 includes a lever 11 which is fixedly connected therewith and which is pivotally secured to a lowfriction pivot 12.
  • the lever 11 swings, its integral nose l3 actuates a movable valve member 14 of the fuel metering valve 10.
  • the movable valve member is constituted by a control plunger.
  • the radial face 15 of the control plunger 14 situated remote from the nose 13 is affected by fluid pressure which serves as a return or resetting force for the air sensor 2.
  • Fuel supply is effected by means of a fuel pump 19 which is driven by an electromotor 18.
  • the fuel pump 19 draws fuel from a fuel tank 20 through a conduit 21 and admits fuel to the fuel metering and distributor valve 10. From the conduit 21 there extends a return conduit 22 which contains a pressure limiting valve 23 and which terminates in the fuel tank 20.
  • the fuel is admitted into a channel 26 provided in the housing of the fuel metering and distributor valve 10.
  • the channel 26 leads to an axially relatively long annular groove 27 of the control plunger 14.
  • the channel 26 also communicates with chambers 28 to expose to the fuel pressure one side of a membrane 29 which bounds the chambers 28.
  • the control edge 27' bounding the annular groove 27 covers to a greater or lesser extent the control slots 30 each leading through channels 31 to a separate chamber 32.
  • the latter is separated from an associated chamber 28 by meansof the diaphragm 29.
  • From the chamber 32 the fuel is admitted through injection channels 33 to the individual injection valves (not shown) which are situated in the vicinity of the engine cylinder inthe air intake tube.
  • the diaphragm 29 serves as the common movable member of a plurality of circularly arranged flat seat valves, each of which, by meansof an associated spring 34, is maintained in an open position when the fuel injection apparatus is inan inoperative state.
  • the membrane boxes formed by the chambers 28 and 32 ensure that, independently of the magnitude of the flow passage section of the metering slots 30 determined by the position of the control edge 27', that is, independently of the fuel quantities passing through the fuel injection valves (not shown), the pres- .sure drop across the-fuel metering valve 27', 30 is are proportionate to one another.
  • the air sensor plate member 21 is displaced in the conical portion 3 of the air intake tube 1 so that the annular flow passage section which varies between the air sensor plate member 2H and the internal wall of the conical portion 3 is proportionate to the displacement of the air sensor 2.
  • the air sensor plate member 21 is displaced in the conical portion 3 of the air intake tube 1 so that the annular flow passage section which varies between the air sensor plate member 2H and the internal wall of the conical portion 3 is proportionate to the displacement of the air sensor 2.
  • the pressurized liquid exerting a constant resetting force on the control plunger 14 is fuel.
  • a conduit 37 which terminates in a pressure chamber 38 into which projects one portion of the control plunger 14 including the radial face 15.
  • a throttle 39 which separates the supply circuit 21 of the fuel metering valve from the control pressure circuit 37, 40 of the regulator device generally indicated at 41.
  • the regulator device 41 Downstream of the throttle 39, from the conduit 37 there extends a conduit 40 which leads to the regulator device 41. From the latter a return conduit 42 leads to the fuel tank in which no pressure prevails.
  • the regulator device 41 is formed as a flat seat valve 43 in which the movable valve member is constituted by a diaphragm 44. The latter is urged into a closed position by a spring 45, the bias of which is variable as a function of engine parameters.
  • a three-dimensional cam 46 which is axially slidably secured to the shaft 47 of the arbitrarily variable butterfly valve 7 to rotate therewith as a unit.
  • the three-dimensional cam 46 is axially slidably displaceable on shaft 47 as a linear function of the vacuum prevailing downstream of the butterfly valve 7 in the air intake tube.
  • the rotary motion of the shaft 47 is transmitted to the three-dimensional cam 46 by means of an angle member 48.
  • the three-dimensional cam 46 is, at its frontal radial face, rotatably secured to a diaphragm 49 of a vacuum chamber 50.
  • the vacuum chamber 50 is connected by means of a conduit 51 with a location in the air intake tube downstream of the butterfly valve 7. In case of a sufficient vacuum, the three-dimensional cam 46 is axially displaced by means of the diaphragm 49 against the force of a resetting spring 52 disposed in the vacuum chamber 50.
  • the three-dimensional cam 46 is in contact with a follower pin 53, the motion of which is transmitted through a cup-shaped spring support 54 to a spring 45, the bias of which determines the liquid pressure which prevails in the pressure chamber 38 and from which the resetting force exerted on the air sensor 2 is derived.
  • the pressurization of the pressure chamber 38 is effected through a dampening throttle 57 which is provided for limiting an overshoot of the air sensor 2 during acceleration and for limiting the effect of suction thrusts of the internal combustion engine.
  • the absence of such dampening throttle would lead to an oscillation of the control plunger 14 which, in turn, would cause an undesired non-uniform fuel metering, resulting in a jerky operation of the engine.
  • a bypass 60 which terminates in the suction tube section 4 downstream of the air sensor 2.
  • a shutoff valve 61 By virtue of means to be described hereinafter, the shutoff valve 61 is in its open position while the vehicle is coasting in gear and also, while the ignition is turned off.
  • the movable valve member 62 of the shutoff valve 61 is displaced by means of an electromagnet 64 against the force of a valve-opening spring 63.
  • the electromagnet 64 is situated in an electric circuit 65 supplied with current from a battery B.
  • the circuit 65 may be interrupted by an ignition switch 66 or, by a switch 67 as a function of the vacuum downstream of the butterfly valve 7.
  • the switch 67 is actuated by a pin 68 which is fixedly connected with a diaphragm 69 of an aneroid 70.
  • the last-named location is connected to the chamber 71 through a conduit 72.
  • the constant return force applied to the air sensor 2 is varied as a function of the position of the butterfly valve and the vacuum prevailing in the air suction tube.
  • This variation is effected, respectively, by a rotation and an axial displacement of the three-dimensional cam 46.
  • the three-dimensional cam 46 rotates as a unit with the butterfly valve 7 and is displaced axially as a function of the vacuum prevailing downstream of the butterfly valve 7.
  • the rotary or axial motion of the three-dimensional cam 46 varies the force of the spring 45 of the regulator device 41.
  • the pressure of the fuel which exerts a force on the radial face 15 of the control plunger 14 and which serves as a return force for the air sensor 2 is thus maintained at a constant level (that is, its magnitude is independent of the position of the control plunger 14) and is varied only as a function of engine parameters.
  • the pressure fluctuations in the conduit 21 are isolated from the pressure chamber 38 by the throttle 39 in conduit 37.
  • the shutoff valve 61 When the vehicle is coasting in gear, the shutoff valve 61 is in an open position so that the air may be drawn by the internal combustion engine through the bypass 60 without affecting the air sensor 2. In this manner it is ensured that the air sensor 2 does not deflect at all in this operational condition of the engine. Consequently, the control slots 36 are continuously closed by the control plunger 14 so that no fuel metering takes place.
  • the shut-off valve 61 is closed against the force of the spring 63 when the electromagnet 64 is energized. The latter is, as noted before, part of the electric circuit 65., The circuit 65 may be opened (and thus the electromagnet 64 de-energized) by a switch 67 which is actuated by the aneroid 70.
  • the latter isso designed that, in response to the relatively strong vacuum prevailing immediately downstream of the butterfly valve 7 when the vehicle is coasting in gear and when, simultaneously, the butterfly valve 7 is in its almost closed (idling) position, it opens the switch 67 which, in turn, opens the valve 61.
  • the aneroid 70 is thus operative only in the idling position of the butterfly valve 7.
  • the electric circuit 65 is also interrupted (by means of the switch 66) and the electromagnet 64 placed in a de-energized condition when the engine ignition is turned off.
  • any intake air drawn through the suction tube after the ignition is turned off will flow through the bypass 60, leaving the air sensor 2 unaf- .fected. In this manner it is ensured that in internal combustion engines which tend to run even after the ignition is shut off (because the drawn fuel mixture is ignited by the hot cylinder wall),simultaneously with the ignition the fuel supply is also shut off.
  • the electromagnet 64 When the ignition is turned on, the electromagnet 64 is energized and thus the shutoff valve 61 is moved against the spring 63 into its closed position whereby the air intake quantities drawn by the internal combustion engine flow through the air intake tubes 1, 3, 4, 5, 6 and operate the air sensor 2 ensuring an exact metering of the fuel at the fuel metering and distributor valve 10.
  • the shutoff valve 61 may also be operated as a function of the position of the butterfly valve 7 and as a function of the rpm of the internal combustion engine.
  • the aneroid 70 and theconduit 77 are omitted altogether and are replaced by a lever which is affixed to the shaft 47 of the butterfly valve '7 and which, through apin is connected to the switch 67 Further, parallel with the switch 67 there is coupled another switch which is actuated by an rpm termined value.
  • a fuel injection apparatus for an externally ignited internal combustion engine driving a vehicle and operating on fuel continuously injected into the air intake tube containing an arbitrarily operable butterfly valve
  • said fuel injection apparatus being of the known type that has (a) an air sensor member forming part of an air sensor means disposed in said air intake tube spaced from said arbitrarily operable butterfly valve, said air sensor member being displaceable by and as a function of the air quantities flowing through said air intake tube, (b) lever means forming part of said air sensor means and being attached to said sensor member, (c) means generating a return force affecting said air sensor means and opposing the deflecting force of the air flow, said return force being independent from the deflected position of said air sensor member, said means including a pressure chamber filled with pressurized liquid supplying said return force, (d) a fuel metering and distributor valve disposed in the fuel path and having a movable valve member exposed to the pressure of said liquid and operatively connected to said lever means, said movable valve member being dis,- place
  • shutoff valve disposed in said bypass and adapted to assume an open position causing the intake air to flow through said bypass leaving said air sensor unaffected and a closed position shutting off said bypass
  • circuit means connected to said shutoff valve and to said detecting means and being responsive to said at least one determined parameter magnitude for moving said shutoff valve into said open position, said parameter magnitude characterizing the operational condition of said engine when said vehicle is coasting in gear.
  • a fuel injection apparatus for an externally ignited internal combustion engine driving a vehicle and operating on fuel continuously injected into the air intake tube containing an arbitrarily operable butterfly valve
  • said fuel injection apparatus being of the known type that has (a) an air sensor member forming part of an air sensor means disposed in said air intake tube spaced from said arbitrarily operable butterfly valve,
  • said air sensor member being displaceable by and as a function of the air quantities flowing through said air
  • lever means forming part of said air sensor means and being attached to said sensor memr said lever means, said movable valve member being displaceable against said return force by said lever means to an extent proportionate to the deflection of said air sensor member for metering fuel quantities and (e) a control valve means varying said return force exerted on said lever means, said control valve means having a movable valve member loaded by spring means and means varying the bias of said spring means as a function of at least one engine parameter, the improvement comprising:

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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)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
US00254367A 1971-05-18 1972-05-18 Fuel injection apparatus for externally ignited internal combustion engines operating on fuel continuously injected into the suction tube Expired - Lifetime US3817229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2124553A DE2124553C3 (de) 1971-05-18 1971-05-18 Kraftstoffeinspritzanlage für gemischverdichtende, fremdgezündete Brennkraftmaschinen mit kontinuierlicher Einspritzung in das Saugrohr

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US3817229A true US3817229A (en) 1974-06-18

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US00254367A Expired - Lifetime US3817229A (en) 1971-05-18 1972-05-18 Fuel injection apparatus for externally ignited internal combustion engines operating on fuel continuously injected into the suction tube

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US (1) US3817229A (enrdf_load_stackoverflow)
JP (1) JPS569652A (enrdf_load_stackoverflow)
DE (1) DE2124553C3 (enrdf_load_stackoverflow)
FR (1) FR2151810A6 (enrdf_load_stackoverflow)
GB (1) GB1393280A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942497A (en) * 1973-11-16 1976-03-09 Robert Bosch Gmbh Fuel injection system
US3942496A (en) * 1973-10-03 1976-03-09 Robert Bosch Gmbh Fuel injection system
US4067299A (en) * 1975-09-25 1978-01-10 Daimler-Benz Aktiengesellschaft Split-gas production for internal combustion engine
US4243002A (en) * 1977-07-06 1981-01-06 Audi Nsu Auto Union Aktiengesellschaft Fuel injection system for an internal combustion engine
US4573440A (en) * 1982-10-22 1986-03-04 Audi Nsu Auto Union Aktiengesellschaft Method for limiting the speed of an internal combustion engine in a vehicle and device for same
US5337715A (en) * 1992-11-13 1994-08-16 Ford Motor Company Engine deceleration intake air flow reduction and fuel shut-off control
US6474297B1 (en) * 2001-05-31 2002-11-05 Lai Ming De Fuel breaking/saving device for cars during coasting

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2333451A1 (de) * 1973-06-30 1975-01-23 Bosch Gmbh Robert Kraftstoffeinspritzanlage fuer gemischverdichtende, fremdgezuendete schichtladungsbrennkraftmaschinen
DE2422520C2 (de) * 1974-05-09 1983-11-10 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzanlage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB704195A (en) * 1951-10-02 1954-02-17 Alfred Robert Hunter Improvements in carburettors for internal combustion engines
US3371914A (en) * 1967-03-20 1968-03-05 Walker Brooks Fuel feed system
US3460814A (en) * 1966-08-12 1969-08-12 Zenith Carburetter Co Ltd Fuel-air mixture intake systems for internal combustion engines
US3482558A (en) * 1968-01-12 1969-12-09 Acf Ind Inc Fuel injection system
US3680535A (en) * 1969-12-01 1972-08-01 Bosch Gmbh Robert Fuel injection system for combustion engines
US3703888A (en) * 1969-12-01 1972-11-28 Bosch Gmbh Robert Device for the fuel quantity control in response to operational variables of an internal combustion engine
US3710769A (en) * 1970-01-21 1973-01-16 Bosch Gmbh Robert Fuel injection system for internal combustion engines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB704195A (en) * 1951-10-02 1954-02-17 Alfred Robert Hunter Improvements in carburettors for internal combustion engines
US3460814A (en) * 1966-08-12 1969-08-12 Zenith Carburetter Co Ltd Fuel-air mixture intake systems for internal combustion engines
US3371914A (en) * 1967-03-20 1968-03-05 Walker Brooks Fuel feed system
US3482558A (en) * 1968-01-12 1969-12-09 Acf Ind Inc Fuel injection system
US3680535A (en) * 1969-12-01 1972-08-01 Bosch Gmbh Robert Fuel injection system for combustion engines
US3703888A (en) * 1969-12-01 1972-11-28 Bosch Gmbh Robert Device for the fuel quantity control in response to operational variables of an internal combustion engine
US3710769A (en) * 1970-01-21 1973-01-16 Bosch Gmbh Robert Fuel injection system for internal combustion engines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942496A (en) * 1973-10-03 1976-03-09 Robert Bosch Gmbh Fuel injection system
US3942497A (en) * 1973-11-16 1976-03-09 Robert Bosch Gmbh Fuel injection system
US4067299A (en) * 1975-09-25 1978-01-10 Daimler-Benz Aktiengesellschaft Split-gas production for internal combustion engine
US4243002A (en) * 1977-07-06 1981-01-06 Audi Nsu Auto Union Aktiengesellschaft Fuel injection system for an internal combustion engine
US4573440A (en) * 1982-10-22 1986-03-04 Audi Nsu Auto Union Aktiengesellschaft Method for limiting the speed of an internal combustion engine in a vehicle and device for same
US5337715A (en) * 1992-11-13 1994-08-16 Ford Motor Company Engine deceleration intake air flow reduction and fuel shut-off control
US6474297B1 (en) * 2001-05-31 2002-11-05 Lai Ming De Fuel breaking/saving device for cars during coasting

Also Published As

Publication number Publication date
DE2124553A1 (de) 1972-11-30
JPS569652A (en) 1981-01-31
GB1393280A (en) 1975-05-07
DE2124553B2 (de) 1978-07-20
JPS5627702B2 (enrdf_load_stackoverflow) 1981-06-26
FR2151810A6 (enrdf_load_stackoverflow) 1973-04-20
DE2124553C3 (de) 1979-04-05

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