US3777174A - Electronic speed regulator for internal combustion engines - Google Patents

Electronic speed regulator for internal combustion engines Download PDF

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Publication number
US3777174A
US3777174A US00228685A US3777174DA US3777174A US 3777174 A US3777174 A US 3777174A US 00228685 A US00228685 A US 00228685A US 3777174D A US3777174D A US 3777174DA US 3777174 A US3777174 A US 3777174A
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United States
Prior art keywords
filling
rotational speed
signal
internal combustion
control device
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Expired - Lifetime
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US00228685A
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English (en)
Inventor
F Butscher
W Bader
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Rolls Royce Solutions GmbH
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MTU Friedrichshafen GmbH
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Priority claimed from DE19712109693 external-priority patent/DE2109693C/de
Application filed by MTU Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
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    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/406—Electrically controlling a diesel injection pump
    • F02D41/407—Electrically controlling a diesel injection pump of the in-line type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • ABSTRACT An electronic rotational speed control device for internal combustion engines of large power output with a desired-value adjustment for the rotational speed and filling of the internal combustion engine, a desired-actual-value comparison of the rotational speed, a control stage, an amplifier, and adjusting member with a servovalve for the filling control which is provided with a motion pickup and a feedback; a pure rotational speed control stage with P-l-D behavior or a filling-rotational speed control stage can be selectively engaged while between the control stage and amplifier a filling-limit signal intended to limit the engine filling is compared with the filling-signal produced by the control stage whereby the respective smaller signal is transmitted to the amplifier; two measuring systems are provided for the rotational speed measurements which are utilized selectively for the supply of the rotational-speed existing-value and which can be connected by way of an OR-circuit so as to act, in case of excess rotational speed, on a stoppage mechanism of the internal combustion engine.
  • the present invention relates to an electronic rotational speed regulating device for internal combustion engines of high power output with a desired-value adjustment 'or setting for the rotational speed and filling of the internal combustion engine, an actual-desiredvalue comparator of the rotational speed, a control stage, an amplifier, and an adjusting member with a servo-valve for the filling control with a displacement pickup and a feedback'system.
  • Electronic speed regulators are provided for internal combustion engines for the control of the rotational speed and filling by reason of their simple construction, their easy adjustability and by reason of the universal applicability to different types of internal combustion engines.
  • the filling of the engines has to be reduced, for example, in dependence on the engine rotational speed, when the ignition pressure at low rotational speeds becomes excessive for the bearing support of the crankshaft or when the so-called smoke limit is reached. If the external air pressure drops, for example, when reaching a greater altitude during the drive of vehicles, or if the oil temperature of the engine increases to a non-permissive extent, for example, due to a defect in the cooling system, or if the temperature of the suction air is excessively high, then the filling has to be reduced for the protection of the engine and for the completely satisfactory combustion.
  • a. pure rotational speed control stage with a P-l-D behavior or a filling-rotational speed stage can be selectively engaged as the control stage;
  • filling-limit signal which is to limit the engine filling, for example, in dependence on the engine rotational speed, the outside air pressure, the oil temperature and/or the charging air temperature, is compared between the control stage and the amplifier with the filling-signal derived from the control stage whereby the respectively smaller signal is transmitted to the amc.
  • two measuring systems are present for the rotational speed measurement which can be utilized selectively for the supply of the actual-value of the rotational speed and which are both operable to act by way of an OR-circuit on a stopping mechanism of the internal combustion engine in case of an excessive rotational speed.
  • acontrol stage with a P-l behavior is used for that purpose having a 0 percent rotational speed deviation between idling and full-filling whereas a P-behavior with adjustable proportionality range is attained by changing the rotational-speed desired-value as a function of the actual-value of the filling.
  • This problem is solved according to the present invention in that a signal taking into consideration the effective load of the generator driven by the corresponding internal combustion engine is added to the filling signal of the common guide control stage for an individual combustion engine so that all installations are operated with the prescribed load.
  • Another object of the present invention resides in an electronic control device for internal combustion engines operable to control the rotational speed or the filling and rotational speed of the internal combustion engine in an effective manner.
  • a further object of the present invention resides in an electronic control device for internal combustion engines of the type described above which is simple in construction, utilizes relatively simple commercially available parts and provides far-reaching protection against premature wear of the engine, yet offers great versatility in operation and universal applicability to different engine installations.
  • Still another object of the present invention resides in an electronic control device for internal combustion engines which assures uniform loads of all internal combustion engines when driven in parallel with a common load.
  • FIG. 1 is a block diagram of an electronic control device for an internal combustion engine in accordance with the present invention
  • FIG. 2 is a diagram illustrating the filling limit curve as a function of rotational speed
  • FIG. 3 is a schematic circuit diagram of the circuit for limiting the filling-signal, I
  • FIG. 4 is a diagram illustrating filling-limit curves
  • FIG. 5 is a schematic circuit diagram for limiting the filling
  • FIG. 6 is a schematic diagram illustrating a correcting system for the internal combustion engine outputs in accordance with the present invention, taking into consideration the effective loads of generators operating in parallel on a common network, and
  • FIG. 7 is a schematic circuit diagram of the differential amplifier used in the present invention.
  • a high power Diesel engine 1 1 is illustrated in this figure as the controlled system.
  • the rotational speed of the Diesel engine 11 is measured both with -a conventional tachogenerator 12 which produces a rotational speed voltage, as also with a conventional digital rotational speed measuring device 13 which develops a frequency corresponding to the rotational speed.
  • the produced output signals are converted into respective analog D.C. voltage signals in a rotational speed receiver 14 and in a frequencywoltage converter 15, respectively, and are selectively made available by way of a switch 16 as rotational speed existing" or actual-value for the control.
  • the desired value adjustment or setting for the rotational speed takes place by way of a potentiometer 17 while the comparison between both values is carried out in an adding point 18 formed by a conventional comparing circuit and is fed to a P-l-D control stage 19 of conventional type.
  • a filling stage 20 with a desired or intended"-value adjustment 21 for the filling.
  • the filling signal corresponding to the rotational speed desired-value or corresponding to the filling desired-value or corresponding to the command of a guide control device can be selectively utilized by way of a switch 22.
  • the filling signal of the control stage is compared with the filling limit signal of a filling limit device 24 which is influenced, for example, by the engine rotational speed, the oil temperature, the charging air' temperature and/or the air pressure.
  • the smaller signal is compared with a feedback signal in a further adding point 25, is amplified in an amplifier 26 and is converted in an electro-hydraulic servo-valve 27 into a corresponding hydraulic pressure.
  • This pressure is produced by a pump 28 driven by the Diesel engine l l and reaches by way of a stop valve 29 a cylinder 30 which actuates an injection pump 31.
  • a displacement pick-up 32 produces the feedback signal which is fed by way of an amplifier 33.
  • the stop valve 29 Upon reaching an excessive rotational speed, the stop valve 29 is actuated by means of an OR-gate 34 from one of the two rotational speed actual value signals.
  • a proportionality adjustment 35 is influenced by the feedback signal as actualvalue of filling and by the filling limit signal from filling limit device 24 and supplies a new signal to be added to the rotational-speed desired-value in the adding point 18.
  • FIG. 2 illustrates the curve of the filling limitation 40 divided into two straight partial sections 38 and 39 as a function of rotational speed.
  • Each section 38 and 39 is adjustable by three values, namely the maximum limit height 41, the angle of inclination 42 and the commencing rotational speed 43.
  • FIG. 3 illustrates a schematic circuit for achieving such a partial section.
  • a voltage proportional to the rotational speed is applied to terminal 44 and is compared with a negative voltage adjusted by means of potentiometer 45. If this negative voltage is larger than the rotational speed voltage, a positive voltage is produced in the output of the operational amplifier 46 which is fed back directly by way of a diode 47. Only when the rotational speed voltage at terminal 44 becomes larger than the negative voltage adjusted by means of the potentiometer 45, the signal in the output of the operational amplifier 46 becomes negative, can flow by way of diode 48 and is fed back by way of a resistance 49. The voltage at a point 50 is determinative for the feedback. The voltage in the output of the operational amplifier 46 adjusts itself corresponding to the forward voltage of the diode 48 whereby the temperature influence of this diode is eliminated.
  • the limit decrease or reduction per rotational speed unit can be adjusted at a potentiometer 51 corresponding to the angle of inclination 42 (FIG. 2).
  • the adjustment at the potentiometer 45 produces the commencing rotational speed 43 (FIG. 2), i.e., the point where the limit control begins.
  • the limit height .41 is adjusted at a further potentiometer 52.
  • the negative voltage stemming from the potentiometer 51 is subtracted from the positive voltage adjusted at the potentiometer 52 by means of a further operational amplifier 54.
  • the signal occurring at terminal 53 is a measure for the magnitude of the limitation. Further correcting members for further sections, for example, section 39 may be connected to terminal 53.
  • FIG. 4 different desired-filling-Iimit control curves 60, 61 and 62 are illustrated.
  • the point of intersection with the rotational speed desired-values 63, 64 and 65 should lie on the maximum possible filling curve 66 which deviates from the filling curve 67 for a I00 per-' cent filling by the filling limitation 68.
  • the non-uniformity degree or proportionality range, i.e., the inclination of the filling limit control curves is to be adjustable.
  • FIG. 5 illustrates a schematic circuit diagram for obtaining the filling limit control curves according to FIG. 4.
  • the filling limit signal is connected to terminal 70 while the filling actual-value signal is connected to terminal 71.
  • the difference signal of the sum of filling limit signal and filling actual-value signal, on the one hand, and the adjusted voltage of the potentiometer 69, on the other, is amplified by an operational amplifier 72.
  • the output signal can be taken off at terminal 73 which will be added to the desired-value for the filling limitation.
  • a potentiometer 74 permits the adjustment of the nonuniformity degree.
  • the engine If, for example, the engine is operated with the desired rotational speed 63 (FIG. 4) and maximum possible filling, then it operates at the operating point 75.
  • the sum of filling-actual-value signal and filling-limit signal corresponds to the value for 100 percent filling adjusted at the potentiometer 69. N 0 difference voltage exists and consequently also no signal is produced at terminal 73. The desiredvalue is not changed.
  • FIG. 6 Four internal combustion engines 81 to 84 with the generators 85 to 88 are illustrated in FIG. 6.
  • the generators 85, 86 and 87 operate in parallel on a network 89 whereas the generator 88 is turned off, for example, for repair purposes.
  • Therotational speed of the three internal combustion engines 81, 82 and 83 is compared only by one command or guide-control device 90 with the desired-value (frequency of the network) and a common filling signal is formed therefrom. This signal is fed by way of a common bar to the filling control devices 91, 92 and 93 for the control of the internal combustion engines.
  • the effective output produced by the generators is detected in effective-output measuring devices 94, 95 and 96 of conventional construction and is indicated to a differential amplifier 97 in the form of signals.
  • An average value is formed from all input signals and a corresponding output signal is formed from the difference between the input signal and the average value and is transmitted to correcting members 98, 99 and 100.
  • the correcting signal is added to the common filling signal and as a result thereof controls the corresponding internal combustion engines in such a manner that all installations operate with the same or predetermined effective output.
  • All control devices of the installed internal combustion engines can be utilized as guide-control device by means of switches to 104.
  • Each individual installation can be disconnected from the network by way of switches to 108.
  • the installation with the internal combustion engine 84 and the generator 88 is illustrated in the disconnected condition.
  • the disconnected installation is connected with its own control device by way of a corresponding switch 109 to 112 and the separation is carried out in the differential amplifier.
  • FIG. 7 The schematic circuit diagram of a differential amplifier for four generators connected in parallel is illustrated in FIG. 7. Switches 121 to 124 are opened respectively when the corresponding installation is turned off. In the illustrated example, the fourth installation is again disconnected and therewith the switch 124 is opened.
  • One transistor 125 to 128 and one constant current source 129 to 132, respectively, is provided for each installation.
  • the corresponding signal for the effective load of the individual installations is connected to the base 133 to 136 of the transistors 125 to 128 and controls the current flowing through the transistors.
  • An electronic control device for internal combustion engines with high-power output characterized by a first desired value means for setting a desired rotational speed for the internal combustion engine, a second desired value means for setting a desired fuel quantity filling value for the internal combustion engine, means for comparing the desired-value and actualvalue of the rotational speed, first pure rotationalspeed control means with P-I-D behavior responsive to the output of said rotational speed comparing means, second fuel quantity filling-rotational speed control means responsive to the output of said second desiredvalue means, means for selectively engaging as a control stage one of said first and second control means, means for providing a fuel quantity filling limit signal, second means for comparing the output signal of the selected first and second control means with the fuel quantity filling signal, and providing an output of the respective smaller signal, and adjusting means responsive to the second comparing means for controlling the fuel quantity filling of the internal combustion engine in accordance with the smaller signal.
  • An electronic control device characterized in that amplifier means are provided between said second comparing means and said adjusting means, said adjusting means including a servo-valve for controlling the fuel quantity filling of the internal combustion engine, motion pick-up means providing an output signal indicative of the actual fuel quantity filling value, and feed-back means for feeding back to actual filling value.
  • An electronic control device characterized in that two measuring means are provided for the rotational speed measurement which can be utilized selectively for the supply of the actual-value of the rotational speed, and means selectively connecting the two measuring means by way of an OR-circuit with a stopping means of the internal combustion engine to render the stopping means effective in case of excess rotational speed.
  • An electronic rotational speed control device with a control stage having a P-l behavior, characterized by means for obtaining the P- behavior with adjustable proportionality range by changing the rotational speed desired value in dependence on the actual-value of the filling signal.
  • An electronic rotational speed control device with limit control means at maximum possible output at the desired rotational speed, characterized by means forming from the sum of the filling-limit signal and filling-actual-value signal a new signal for adding to the rotational speed-desired value signal and including a further substantially constant signal corresponding to a maximum filling-signal.
  • An electronic rotational speed control device characterized by parallel operation of several internal combustion engines, and a single common guide control means with a control stage are operatively connected with said several internal combustion engines to provide a filling signal therefor.
  • An electronic rotational speed control device in which the internal combustion engines are operatively connected with generators which operate on a common network, and characterized in that a signal taking into consideration the effective load of a respective generator driven by the corresponding internal combustion engineis added to the filling signal of the common guide control means for the individual internal combustion engine so that all engine-generator installations are operated with the prescribed load.
  • An electronic rotational speed control device characterized in that the amplifier means includes operational amplifiers with diodes included in the feedback means so that the temperature influence of the diodes is eliminated.
  • An electronic rotational speed control device characterized in that the filling limit signal is operable to limit the engine filling and said filling limit means provide the filling limit signal in dependence of at least one of the parameters consisting of engine rotational speed, outside air pressure, oil temperature and charging air temperature.
  • An electronic rotational speed control device characterized in that the filling limit signal is operable to limit the engine filling as a function of all of said parameters.
  • An electronic rotational speed control device with a control stage having a P-I behavior, characterized by means for obtaining the P- behavior with adjustable proportionality range by changing the rotational speed desired value in dependence on the actual-value of the filling signal.
  • An electronic rotational speed control device with limit control means at maximum possible output at the desired rotational speed, characterized by means forming from the sum of the filling-limit signal and filling-actual-value signal a new signal for adding to the rotational speed desired-value signal and including a further substantially constant signal corresponding to a maximum filling-signal.
  • An electronic rotational speed control device characterized by parallel operation of several internal combustion engines, and a single common guide control means with a control stage are operatively connected with said several internal combustion engines to provide a filling signal therefor.
  • An electronic rotational speed control device in which the internal combustion engines are operatively connected with generators which operate on a common network, characterized in that a signal taking into consideration the effective load of a respective generator driven by the corresponding internal combustion engine is added to the filling signal of the common guide control means for the individual internal combustion engine so that all engine-generator installations are operated with the prescribed load.
  • An electronic rotational speed control device characterized in that the filling limit signal is operable to limit the engine filling and said filling limit means provide the filling limit signal in dependence of at least one of the parameters consisting of engine rotational speed, outside air pressure, oil temperature and charging air temperature.
  • An electronic rotational speed control device characterized in that the filling limit signal is operable to limit the engine filling as a function of all said parameters.
  • An electronic rotational speed control device according to claim 2,.characterized in that the amplifier means includes operational amplifiers with diodes included in the feedback means so that the temperature influence of the diodes is eliminated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
US00228685A 1971-03-02 1972-02-23 Electronic speed regulator for internal combustion engines Expired - Lifetime US3777174A (en)

Applications Claiming Priority (1)

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DE19712109693 DE2109693C (de) 1971-03-02 Elektronischer Drehzahlregler fur Brennkraftmaschinen

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US (1) US3777174A (OSRAM)
JP (1) JPS513849B1 (OSRAM)
CH (1) CH546886A (OSRAM)
ES (1) ES400221A1 (OSRAM)
FR (1) FR2127885A5 (OSRAM)
GB (1) GB1350052A (OSRAM)
IT (1) IT948726B (OSRAM)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886915A (en) * 1973-09-28 1975-06-03 Bendix Corp Passive adaptive engine control system for improved vehicle driveability
US3897762A (en) * 1972-04-04 1975-08-05 Cav Ltd Fuel systems for engines
US3897763A (en) * 1972-04-04 1975-08-05 Cav Ltd Fuel system for engines
US3948237A (en) * 1973-01-06 1976-04-06 C.A.V. Limited Fuel supply systems for engines
US3973539A (en) * 1972-04-04 1976-08-10 C.A.V. Limited Fuel systems for engines
US3973538A (en) * 1973-01-06 1976-08-10 C.A.V. Limited Fuel systems for engines
FR2436883A1 (fr) * 1978-09-25 1980-04-18 Bendix Corp Dispositif electronique de commande d'injection de carburant pour moteur a combustion interne
EP0045029A3 (en) * 1980-07-30 1982-08-04 Hitachi, Ltd. Fuel supply system for diesel engines
US4425889A (en) 1981-04-10 1984-01-17 Nippondenso Co., Ltd. Electric governor for internal combustion engine
US4461254A (en) * 1981-08-13 1984-07-24 Vdo Adolf Schindling Ag Device for controlling the position of an element which controls the fuel-air mixture
FR2544798A1 (fr) * 1983-04-22 1984-10-26 Renault Dispositif d'asservissement du regime d'un moteur diesel par regulation electronique du debit du carburant injecte par la pompe a injection
US4498016A (en) * 1983-08-04 1985-02-05 Caterpillar Tractor Co. Locomotive governor control
US4554899A (en) * 1983-08-18 1985-11-26 Robert Bosch Gmbh Speed governing system for an internal combustion engine with self-ignition
US4730118A (en) * 1987-02-03 1988-03-08 James D. Barnes Oil field induction generator system
US5048482A (en) * 1988-08-25 1991-09-17 Robert Bosch Gmbh Device for controlling an operating characteristic of an internal combustion engine
US5633593A (en) * 1991-05-22 1997-05-27 Wolff; George D. Apparatus for sensing proximity of a moving target

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2542568B2 (ja) * 1985-04-02 1996-10-09 三菱電機株式会社 内燃機関の回転数制御装置
JPS61229951A (ja) * 1985-04-02 1986-10-14 Mitsubishi Electric Corp 内燃機関の回転数制御装置

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US3163813A (en) * 1953-10-08 1964-12-29 Woodward Governor Co Automatic control system
US3407793A (en) * 1966-05-20 1968-10-29 Bosch Gmbh Robert Electronic controller for diesel engines
US3425401A (en) * 1966-05-20 1969-02-04 Bosch Gmbh Robert Electronic controller for diesel engine
US3533236A (en) * 1968-01-22 1970-10-13 Technology Uk Engine fuel supply servo systems
US3548792A (en) * 1969-02-11 1970-12-22 Judson G Palmer Control apparatus for internal-combustion engines
US3636933A (en) * 1969-05-27 1972-01-25 Diesel Kiki Co Electronic governor for injection-type internal combustion engines
US3643635A (en) * 1970-04-24 1972-02-22 William T Milam Electronic fuel injection system
US3645240A (en) * 1969-02-26 1972-02-29 Sopromi Soc Proc Modern Inject Electronic control system for internal combustion engine injectors
US3664311A (en) * 1969-01-21 1972-05-23 Nippon Denso Co Fuel injection control system for internal combustion engine
US3682145A (en) * 1967-02-13 1972-08-08 Diesel Kiki Co Fuel controlling device for injection type internal combustion engines

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163813A (en) * 1953-10-08 1964-12-29 Woodward Governor Co Automatic control system
US3407793A (en) * 1966-05-20 1968-10-29 Bosch Gmbh Robert Electronic controller for diesel engines
US3425401A (en) * 1966-05-20 1969-02-04 Bosch Gmbh Robert Electronic controller for diesel engine
US3682145A (en) * 1967-02-13 1972-08-08 Diesel Kiki Co Fuel controlling device for injection type internal combustion engines
US3533236A (en) * 1968-01-22 1970-10-13 Technology Uk Engine fuel supply servo systems
US3664311A (en) * 1969-01-21 1972-05-23 Nippon Denso Co Fuel injection control system for internal combustion engine
US3548792A (en) * 1969-02-11 1970-12-22 Judson G Palmer Control apparatus for internal-combustion engines
US3645240A (en) * 1969-02-26 1972-02-29 Sopromi Soc Proc Modern Inject Electronic control system for internal combustion engine injectors
US3636933A (en) * 1969-05-27 1972-01-25 Diesel Kiki Co Electronic governor for injection-type internal combustion engines
US3643635A (en) * 1970-04-24 1972-02-22 William T Milam Electronic fuel injection system

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897762A (en) * 1972-04-04 1975-08-05 Cav Ltd Fuel systems for engines
US3897763A (en) * 1972-04-04 1975-08-05 Cav Ltd Fuel system for engines
US3973539A (en) * 1972-04-04 1976-08-10 C.A.V. Limited Fuel systems for engines
US3948237A (en) * 1973-01-06 1976-04-06 C.A.V. Limited Fuel supply systems for engines
US3973538A (en) * 1973-01-06 1976-08-10 C.A.V. Limited Fuel systems for engines
US3886915A (en) * 1973-09-28 1975-06-03 Bendix Corp Passive adaptive engine control system for improved vehicle driveability
FR2436883A1 (fr) * 1978-09-25 1980-04-18 Bendix Corp Dispositif electronique de commande d'injection de carburant pour moteur a combustion interne
EP0045029A3 (en) * 1980-07-30 1982-08-04 Hitachi, Ltd. Fuel supply system for diesel engines
US4425889A (en) 1981-04-10 1984-01-17 Nippondenso Co., Ltd. Electric governor for internal combustion engine
US4461254A (en) * 1981-08-13 1984-07-24 Vdo Adolf Schindling Ag Device for controlling the position of an element which controls the fuel-air mixture
FR2544798A1 (fr) * 1983-04-22 1984-10-26 Renault Dispositif d'asservissement du regime d'un moteur diesel par regulation electronique du debit du carburant injecte par la pompe a injection
EP0127495A1 (fr) * 1983-04-22 1984-12-05 Regie Nationale Des Usines Renault Dispositif d'asservissement du régime d'un moteur Diesel par régulation électronique du débit du carburant injecté par la pompe à injection
US4498016A (en) * 1983-08-04 1985-02-05 Caterpillar Tractor Co. Locomotive governor control
US4554899A (en) * 1983-08-18 1985-11-26 Robert Bosch Gmbh Speed governing system for an internal combustion engine with self-ignition
US4730118A (en) * 1987-02-03 1988-03-08 James D. Barnes Oil field induction generator system
US5048482A (en) * 1988-08-25 1991-09-17 Robert Bosch Gmbh Device for controlling an operating characteristic of an internal combustion engine
US5633593A (en) * 1991-05-22 1997-05-27 Wolff; George D. Apparatus for sensing proximity of a moving target

Also Published As

Publication number Publication date
CH546886A (de) 1974-03-15
FR2127885A5 (OSRAM) 1972-10-13
JPS513849B1 (OSRAM) 1976-02-06
GB1350052A (en) 1974-04-18
IT948726B (it) 1973-06-11
ES400221A1 (es) 1975-01-01
DE2109693A1 (OSRAM) 1972-05-25
DE2109693B2 (de) 1972-05-25

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