EP0129776B1 - Control device for an internal combustion engine - Google Patents

Control device for an internal combustion engine Download PDF

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Publication number
EP0129776B1
EP0129776B1 EP84106741A EP84106741A EP0129776B1 EP 0129776 B1 EP0129776 B1 EP 0129776B1 EP 84106741 A EP84106741 A EP 84106741A EP 84106741 A EP84106741 A EP 84106741A EP 0129776 B1 EP0129776 B1 EP 0129776B1
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EP
European Patent Office
Prior art keywords
speed
rotation
injected fuel
rotational speed
regulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84106741A
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German (de)
French (fr)
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EP0129776A1 (en
Inventor
Hans Dipl.-Ing. Schreiber
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Siemens AG
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Siemens AG
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Publication date
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Application filed by Siemens AG filed Critical Siemens AG
Priority to AT84106741T priority Critical patent/ATE29765T1/en
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Classifications

    • 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
    • F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/007—Electric control of rotation speed controlling fuel supply
    • 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
    • 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
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1413—Controller structures or design
    • F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter

Definitions

  • the invention relates to an arrangement according to the preamble of the claim.
  • the invention has for its object to avoid mechanical components such as stops or equivalents, springs and switches to determine the starting position.
  • a calibration point for the position of the control rod is determined by determining the position of a known injection quantity.
  • a tooth pulse generator and a PLL circuit determine a speed list signal which reproduces the time profile of the engine speed and whose change over time between two injection times is a direct measure of the current load on the engine.
  • the injection quantity is changed depending on the load.
  • the current injection quantity is then a measure of the load. Since there is also a known relationship between the position of the control rod and the injection quantity, the position of the control rod can be calculated from the load and the average speed.
  • the injection quantity and the associated position of the control rod which serves as a calibration point, are determined at a known load and speed.
  • the speed is regulated at idle so that it cannot fall below a minimum value and cannot exceed a maximum value.
  • these extreme values for the nominal value of the idling speed are continuously compared with the current actual speed value by an idling controller with a microcomputer. If the speed falls below the minimum value, the injection quantity is increased. If the engine speed exceeds the maximum value, the injection quantity is reduced. To do this, the stepper motor is controlled step by step by the controller.
  • the steps of the stepper motor are the same size and countable. Furthermore, the change in the injection quantity due to a step of the stepping motor is known. Starting from the calibration point, all steps of the stepper motor are registered in the microcomputer. From the injection quantity of the calibration point and the number of steps of the stepper motor, the current injection quantity is to be determined at every point in time.
  • Marking elements 2 are formed on a rotatable toothed disk 1 according to FIG. 1, which is connected to the crankshaft of an engine 10.
  • a tooth pulse generator 3 with an evaluation circuit 4 registers the marking elements 2 and sends speed pulses 5, which are fed to a phase discriminator 61 in a phase locked loop (PLL) 6.
  • a low pass 62 is connected in series with the phase discriminator 61.
  • a voltage controlled oscillator 63 is connected between the output of the low pass 62 and an input of the phase discriminator 61. The input voltage of the voltage-controlled oscillator 63 is then an image of the time profile of the speed n of the rotating disc 1, as shown in FIGS. 2 and 3.
  • Time t is plotted there on the abscissa and speed n is plotted on the ordinate.
  • speed n decreases less due to friction losses between two injection times 7 and 8 - FIG. 2 - than with a higher load on the engine (FIG. 3).
  • the voltage at the output of the low-pass filter 62 serves as the actual speed value in an idle control circuit with a microcomputer 9.
  • This contains limit values 12 and 13 for a desired speed value via a supply line and the actual speed value is supplied via a line 19.
  • the idle control loop reduces the injection quantity of the engine 10 by moving a quantity actuator via a control rod 11 when the speed reaches a predetermined upper limit value 12 and increases the injection quantity when the speed reaches a predetermined lower limit value 13.
  • the friction losses of the engine 10 when idling are illustrated in FIG. 1 as an idling load 14 and remove mechanical work from the engine 10. 2 and 3, the upper limit value 12 and the lower limit value 13 are marked on the ordinate.
  • the idle controller maintains the speed within a band between these two limit values 12 and 13 and adjusts the control rod 11 accordingly.
  • the change in speed (the differential quotient) between two injection points 7 and 8 identifies the load state of the engine when idling.
  • the microcomputer 9 determines the injection quantity necessary for maintaining the idle speed at idle load and assigns it to that of the idle control loop set position of the control rod 11 of the injection pump. These values serve as a calibration point.
  • the microcomputer 9 controls the control rod 11 step by step by means of a stepping motor 16 and receives feedback on the execution of each step via the line 17. Starting from the calibration point, all steps of the stepping motor 16 are registered, as a result of which the exact position of the control rod 11 is known at all times.
  • each step of the stepping motor 16 means a change in the injection quantity by a constant value
  • the change in the injection quantity compared to the calibration point can be clearly determined from the knowledge of the injection quantity at the calibration point and from the number of steps of the stepping motor 16 stored in the microcomputer 9.
  • the instantaneous injection quantity is known for each position of the control rod 11.
  • the required number of steps of the stepper motor can be calculated for each required injection quantity.

Abstract

1. An arrangement for controlling an internal combustion engine : - comprising a fuel injection pump with a regulating rod (11) controlled by a stepping motor (16) to positions which in each case determine the quantity of injected fuel ; - comprising a position regulator (9) which determines the position of the regulating rod in dependence upon the difference between a theoretical position value and an actual position value, the position regulator consisting of a micro-computer which calculates the number of regulating steps to be executed by the stepping motor (16) for each quantity of injected fuel, each regulating step changing the quantity of injected fuel by the same amount, and where the absolute value of the quantity of injected fuel is determined by the number and direction of the regulating steps, commencing from a calibration point ; - comprising a speed of rotation indicator in the form of a toothed disc (1, 2) which is coupled to the motor (10) ; and - comprising a tooth pulse generator (3, 4) which scans the toothed disc (1, 2) and supplies rotational speed pulses (5) at a pulse frequency proportional to the speed of rotation ; characterised in that - the position regulator contains a rotational speed regulator (9) which determines the position of the regulating rod in dependence upon the difference between a speed of rotation signal (19) and a theoretical speed of rotation (18) ; - that a PLL-circuit is provided, supplied with the rotational speed pulses (5) and supplying an analogue voltage proportional to the curve of the rotational speed, as an actual rotation speed signal (n) ; - that the micro-computer determines the rotational speed and the change in speed of rotation between two injection points to determine therefrom the no-load state ; and - that in the no-load state the micro-computer calculates the quantity of injected fuel necessary to maintain a predetermined no-load speed, taking into account additional engine characteristics, such as temperature and pressure, to which speed it assigns the current position of the stepping motor as a calibration point.

Description

Die Erfindung betrifft eine Anordnung gemäss Oberbegriff des Patentanspruches.The invention relates to an arrangement according to the preamble of the claim.

Bei einer solchen, aus EP-A-0 078 762 bekannten Anordnung ist als Eichpunkt ein mechanischer Anschlag vorgesehen, gegen den der Schrittmotor und die mit ihm gekuppelte Regelstange ein- oder mehrmals gesteuert wird: Diese Eichposition entspricht einer definierten Einspritzmenge. Da die Veränderung dieser Einspritzmenge pro Schritt des Schrittmotors ebenfalls bekannt ist, lässt sich zu jeder gewünschten Einspritzmenge die erforderliche Zahl und Richtung der auszuführenden Schritte berechnen. Dies setzt jedoch eine Justierung des Eichpunktes voraus.In such an arrangement known from EP-A-0 078 762, a mechanical stop is provided as the calibration point, against which the stepper motor and the control rod coupled to it are controlled one or more times: this calibration position corresponds to a defined injection quantity. Since the change in this injection quantity per step of the stepping motor is also known, the required number and direction of the steps to be carried out can be calculated for each desired injection quantity. However, this requires an adjustment of the calibration point.

Der Erfindung liegt die Aufgabe zugrunde, mechanische Bauteile wie Anschläge oder Äquivalente, Federn und Schalter, zur Feststellung der Ausgangslage zu vermeiden.The invention has for its object to avoid mechanical components such as stops or equivalents, springs and switches to determine the starting position.

Die Lösung dieser Aufgabe ist im Patentanspruch gekennzeichnet.The solution to this problem is characterized in the claim.

Gemäss dem Wesen der Erfindung wird e.in Eichpunkt für die Position der Regelstange bestimmt, indem bei einer bekannten Einspritzmenge deren Position bestimmt wird. Ein Zahnimpulsgeber und eine PLL-Schaltung ermitteln dazu ein Drehzahlistsignal, das den zeitlichen Verlauf der Motordrehzahl wiedergibt und dessen zeitliche Änderung zwischen zwei Einspritzzeitpunkten unmittelbar ein Mass für die momentane Last am Motor ist. Um eine mittlere Drehzahl konstant zu halten, wird die Einspritzmenge abhängig von der Last verändert. Die aktuelle Einspritzmenge ist dann ein Mass für die Last. Da zwischen der Position der Regelstange und der Einspritzmenge ebenfalls ein bekannter Zusammenhang besteht, ist die Position der Regelstange aus der Last und der mittleren Drehzahl berechenbar.According to the essence of the invention, a calibration point for the position of the control rod is determined by determining the position of a known injection quantity. For this purpose, a tooth pulse generator and a PLL circuit determine a speed list signal which reproduces the time profile of the engine speed and whose change over time between two injection times is a direct measure of the current load on the engine. In order to keep an average speed constant, the injection quantity is changed depending on the load. The current injection quantity is then a measure of the load. Since there is also a known relationship between the position of the control rod and the injection quantity, the position of the control rod can be calculated from the load and the average speed.

Gemäss der Erfindung wird bei bekannter Last und Drehzahl die Einspritzmenge und die dazugehörige Position der Regelstange bestimmt, die als Eichpunkt dient.According to the invention, the injection quantity and the associated position of the control rod, which serves as a calibration point, are determined at a known load and speed.

Hierzu wird die Drehzahl im Leerlauf so geregelt, dass sie einen Minimalwert nicht unterschreiten und einen Maximalwert nicht überschreiten kann. Dazu werden diese Extremwerte für den Sollwert der Leerlauf-Drehzahl durch einen Leerlaufregler mit einem Mikrocomputer laufend mit dem momentanen Drehzahlistwert verglichen. Unterschreitet die Drehzahl den Minimalwert, so wird die Einspritzmenge erhöht. Überschreitet die Drehzahl den Maximalwert, dann wird die Einspritzmenge vermindert. Dazu wird der Schrittmotor vom Regler schrittweise angesteuert.For this purpose, the speed is regulated at idle so that it cannot fall below a minimum value and cannot exceed a maximum value. For this purpose, these extreme values for the nominal value of the idling speed are continuously compared with the current actual speed value by an idling controller with a microcomputer. If the speed falls below the minimum value, the injection quantity is increased. If the engine speed exceeds the maximum value, the injection quantity is reduced. To do this, the stepper motor is controlled step by step by the controller.

Die Schritte des Schrittmotors sind gleich gross und abzählbar. Weiterhin ist die Änderung der Einspritzmenge aufgrund eines Schrittes des Schrittmotors bekannt. Vom Eichpunkt ausgehend werden alle Schritte des Schrittmotors in dem Mikrocomputer registriert. Aus der Einspritzmenge des Eichpunktes und der Anzahl der Schritte des Schrittmotors ist die momentane Einspritzmenge zu jedem Zeitpunktzu bestimmen.The steps of the stepper motor are the same size and countable. Furthermore, the change in the injection quantity due to a step of the stepping motor is known. Starting from the calibration point, all steps of the stepper motor are registered in the microcomputer. From the injection quantity of the calibration point and the number of steps of the stepper motor, the current injection quantity is to be determined at every point in time.

Die Erfindung soll anhand eines in der Zeichnung schematisch wiedergegebenen Ausführungsbeipiels näher erläutert werden:

  • Fig. 1 zeigt eine Einrichtung zur Regelung der Drehzahl eines Verbrennungsmotors,
  • Fig. 2 zeigt den zeitlichen Verlauf der Drehzahl bei kleiner Last am Motor innerhalb eines Drehzahlbandes, und
  • Fig. 3 den zeitlichen Verlauf der Drehzahl bei grösserer Last am Motor innerhalb des Drehzahlbandes.
The invention will be explained in more detail with reference to an exemplary embodiment shown schematically in the drawing:
  • 1 shows a device for regulating the speed of an internal combustion engine,
  • Fig. 2 shows the time course of the speed at low load on the engine within a speed band, and
  • Fig. 3 shows the time course of the speed with a greater load on the engine within the speed range.

An einer drehbaren Zahnscheibe 1 nach Fig. 1, die mit der Kurbelwelle eines Motors 10 verbunden ist, sind Markierungselemente 2 angeformt. Ein Zahnimpulsgeber 3 mit einer Auswerteschaltung 4 registriert die Markierungselemente 2 und sendet Drehzahlimpulse 5, die einem Phasendiskriminator 61 in einem Phase Locked Loop (PLL) 6 zugeleitet werden. Mit dem Phasendiskriminator 61 ist ein Tiefpass 62 in Reihe geschaltet. Ein spannungskontrollierter Oszillator 63 ist zwischen dem Ausgang des Tiefpasses 62 und einem Eingang des Phasendiskriminators 61 eingeschaltet. Die Eingangsspannung des spannungskontrollierten Oszillators 63 ist dann ein Abbild des zeitlichen Verlaufes der Drehzahl n der rotierenden Scheibe 1, wie er in den Fig. 2 und 3 dargestellt ist. Auf der Abszisse ist dort jeweils die Zeit t und auf der Ordinate die Drehzahl n aufgetragen. Bei geringer Belastung des Motors geht die Drehzahl n infolge von Reibungsverlusten zwischen zwei Einspritzzeitpunkten 7 und 8 weniger zurück - Fig. 2-als bei höherer Last am Motor (Fig. 3).Marking elements 2 are formed on a rotatable toothed disk 1 according to FIG. 1, which is connected to the crankshaft of an engine 10. A tooth pulse generator 3 with an evaluation circuit 4 registers the marking elements 2 and sends speed pulses 5, which are fed to a phase discriminator 61 in a phase locked loop (PLL) 6. A low pass 62 is connected in series with the phase discriminator 61. A voltage controlled oscillator 63 is connected between the output of the low pass 62 and an input of the phase discriminator 61. The input voltage of the voltage-controlled oscillator 63 is then an image of the time profile of the speed n of the rotating disc 1, as shown in FIGS. 2 and 3. Time t is plotted there on the abscissa and speed n is plotted on the ordinate. With a low load on the engine, the speed n decreases less due to friction losses between two injection times 7 and 8 - FIG. 2 - than with a higher load on the engine (FIG. 3).

Die Spannung am Ausgang des Tiefpasses 62 dient als Drehzahlistwert in einem Leerlaufregelkreis mit einem Mikrocomputer 9. Dieser enthält über eine Zuleitung 18 Grenzwerte 12 und 13 für einen Drehzahlsollwert und über eine Leitung 19 den Drehzahlistwert zugeführt. Der Leerlaufregelkreis verkleinert die Einspritzmenge des Motors 10 durch Bewegen eines Mengenstellgliedes über eine Regelstange 11, wenn die Drehzahl einen vorgegebenen oberen Grenzwert 12 erreicht, und vergrössert die Einspritzmenge, wenn die Drehzahl einen vorgegebenen unteren Grenzwert 13 erreicht. Die Reibungsverluste des Motors 10 im Leerlauf sind in Fig. 1 als Leerlauflast 14 veranschaulicht und entziehen dem Motor 10 mechanische Arbeit. In den Fig. 2 und 3 sind auf der Ordinate der obere Grenzwert 12 und der untere Grenzwert 13 markiert. Der Leerlaufregler hält die Drehzahl innerhalb eines Bandes zwischen diesen beiden Grenzwerten 12 und 13 und verstellt entsprechend die Regelstange 11.The voltage at the output of the low-pass filter 62 serves as the actual speed value in an idle control circuit with a microcomputer 9. This contains limit values 12 and 13 for a desired speed value via a supply line and the actual speed value is supplied via a line 19. The idle control loop reduces the injection quantity of the engine 10 by moving a quantity actuator via a control rod 11 when the speed reaches a predetermined upper limit value 12 and increases the injection quantity when the speed reaches a predetermined lower limit value 13. The friction losses of the engine 10 when idling are illustrated in FIG. 1 as an idling load 14 and remove mechanical work from the engine 10. 2 and 3, the upper limit value 12 and the lower limit value 13 are marked on the ordinate. The idle controller maintains the speed within a band between these two limit values 12 and 13 and adjusts the control rod 11 accordingly.

Die Drehzahländerung (der Differentialquotient) zwischen zwei Einspritzpunkten 7 und 8 identifiziert den Lastzustand des Motors im Leerlauf.The change in speed (the differential quotient) between two injection points 7 and 8 identifies the load state of the engine when idling.

Mittels weiterer Motorkenngrössen 15, wie Temperatur und Druck, bestimmt der Mikrocomputer 9 die bei der Leerlauf-Last für eine Beibehaltung der Leerlaufdrehzahl nötige Einspritzmenge und ordnet sie der vom Leerlaufregelkreis eingestellten Position der Regelstange 11 der Einspritzpumpe zu. Diese Werte dienen als Eichpunkt.By means of further engine parameters 15, such as temperature and pressure, the microcomputer 9 determines the injection quantity necessary for maintaining the idle speed at idle load and assigns it to that of the idle control loop set position of the control rod 11 of the injection pump. These values serve as a calibration point.

Der Mikrocomputer 9 steuert aufgrund der ihm zugeführten Informationen die Regelstange 11 durch einen Schrittmotor 16 stufenweise und erhält über den Vollzug eines jeden Schrittes über die Leitung 17 eine Rückmeldung. Vom Eichpunkt ausgehend werden alle Schritte des Schrittmotors 16 registriert, wodurch zu jedem Zeitpunkt die genaue Lage der Regelstange 11 bekannt ist.Based on the information supplied to it, the microcomputer 9 controls the control rod 11 step by step by means of a stepping motor 16 and receives feedback on the execution of each step via the line 17. Starting from the calibration point, all steps of the stepping motor 16 are registered, as a result of which the exact position of the control rod 11 is known at all times.

Da jeder Schritt des Schrittmotors 16 eine Veränderung der Einspritzmenge um einen konstanten Wert bedeutet, ist aus der Kenntnis der Einspritzmenge im Eichpunkt und aus der im Mikrocomputer 9 gespeicherten Zahl der Schritte des Schrittmotors 16 die Änderung der Einspritzmenge gegenüber dem Eichpunkt eindeutig zu bestimmen. Ausgehend von dem bekannten Eichpunkt ist also zu jeder Position der Regelstange 11 die momentane Einspritzmenge bekannt. Umgekehrt ist zu jeder geforderten Einspritzmenge die dafür nötige Zahl der Schritte des Schrittmotors berechenbar.Since each step of the stepping motor 16 means a change in the injection quantity by a constant value, the change in the injection quantity compared to the calibration point can be clearly determined from the knowledge of the injection quantity at the calibration point and from the number of steps of the stepping motor 16 stored in the microcomputer 9. Starting from the known calibration point, the instantaneous injection quantity is known for each position of the control rod 11. Conversely, the required number of steps of the stepper motor can be calculated for each required injection quantity.

Claims (1)

1. An arrangement for controlling an internal combustion engine:
- comprising a fuel injection pump with a regulating rod (11) controlled by a stepping motor (16) to positions which in each case determine the quantity of injected fuel;
- comprising a position regulator (9) which determines the position of the regulating rod in dependence upon the difference between a theoretical position value and an actual position value, the position regulator consisting of a micro-computer which calculates the number of regulating steps to be executed by the stepping motor (16) for each quantity of injected fuel, each regulating step changing the quantity of injected fuel by the same amount, and where the absolute value of the quantity of injected fuel is determined by the number and direction of the regulating steps, commencing from a calibration point;
- comprising a speed of rotation indicator in the form of a toothed disc (1, 2) which is coupled to the motor (10); and
- comprising a tooth pulse generator (3, 4) which scans the toothed disc (1, 2) and supplies rotational speed pulses (5) at a pulse frequency proportional to the speed of rotation; characterised in that
- the position regulator contains a rotational speed regulator (9) which determines the position of the regulating rod in dependence upon the difference between a speed of rotation signal (19) and a theoretical speed of rotation (18);
- that a PLL-circuit is provided, supplied with the rotational speed pulses (5) and supplying an analogue voltage proportional to the curve of the rotational speed, as an actual rotation speed signal (n);
- that the micro-computer determines the rotational speed and the change in speed of rotation between two injection points to determine therefrom the no-load state; and
- that in the no-load state the micro-computer calculates the quantity of injected fuel necessary to maintain a predetermined no-load speed, taking into account additional engine characteristics, such as temperature and pressure, to which speed it assigns the current position of the stepping motor as a calibration point.
EP84106741A 1983-06-27 1984-06-13 Control device for an internal combustion engine Expired EP0129776B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84106741T ATE29765T1 (en) 1983-06-27 1984-06-13 ARRANGEMENT FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833323106 DE3323106A1 (en) 1983-06-27 1983-06-27 METHOD AND DEVICE FOR DETERMINING THE POSITION OF A CONTROL ROD ON AN INJECTION PUMP FOR COMBUSTION ENGINES
DE3323106 1983-06-27

Publications (2)

Publication Number Publication Date
EP0129776A1 EP0129776A1 (en) 1985-01-02
EP0129776B1 true EP0129776B1 (en) 1987-09-16

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EP84106741A Expired EP0129776B1 (en) 1983-06-27 1984-06-13 Control device for an internal combustion engine

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EP (1) EP0129776B1 (en)
JP (1) JPS6013952A (en)
AT (1) ATE29765T1 (en)
DE (2) DE3323106A1 (en)

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DE3442373A1 (en) * 1984-11-20 1986-05-28 Voest-Alpine Friedmann GmbH, Linz CIRCUIT FOR MONITORING A STEPPER MOTOR
DE4004110C2 (en) * 1990-02-10 2001-07-05 Bosch Gmbh Robert Method and device for controlling a solenoid valve-controlled fuel pump
DE4014966A1 (en) * 1990-05-10 1991-11-14 Kloeckner Humboldt Deutz Ag Engine diagnosis method using temp. chamber sensitive element - to measure combustion chamber temp. at indication of engine load
JP2784608B2 (en) * 1990-09-28 1998-08-06 日立建機株式会社 Motor speed control device
JPH05296093A (en) * 1992-04-15 1993-11-09 Zexel Corp Electronic governor of fuel injection device for internal combustion engine
CN109083791B (en) * 2018-09-30 2019-09-27 潍柴动力股份有限公司 The fault detection method and fault detection means of engine oil spout driving
CN109139323B (en) * 2018-11-07 2023-09-01 河南柴油机重工有限责任公司 Device and method for detecting phase and oil supply time of cam shaft of composite oil injection pump

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EP0078762A2 (en) * 1981-11-02 1983-05-11 Ail Corporation Electrical fuel control system and method for diesel engines

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FR2252490A1 (en) * 1973-11-28 1975-06-20 Alsthom Cgee Electronic speed control method for I.C. engine - controls fuel flow with stepping motor fed with electric impulses
JPS5228176B2 (en) * 1974-06-14 1977-07-25
DE2507138C2 (en) * 1975-02-19 1984-08-23 Robert Bosch Gmbh, 7000 Stuttgart Method and device for obtaining a measured variable which indicates the approximation of a predetermined lean running limit during the operation of an internal combustion engine
DE3015004A1 (en) * 1979-04-20 1981-01-08 Aisan Ind Fuel-air mixture control for carburettor of IC engine - calculates engine speed from measured crankshaft speed and compares it with required speed
DE3023350A1 (en) * 1980-06-21 1982-01-14 Robert Bosch Gmbh, 7000 Stuttgart ELECTRONIC CONTROL DEVICE FOR THE SPEED CONTROL OF AN INTERNAL COMBUSTION ENGINE WITH AUTO IGNITION
JPS5713241A (en) * 1980-06-30 1982-01-23 Diesel Kiki Co Ltd Fuel injector

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Publication number Priority date Publication date Assignee Title
EP0078762A2 (en) * 1981-11-02 1983-05-11 Ail Corporation Electrical fuel control system and method for diesel engines

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Publication number Publication date
DE3323106A1 (en) 1985-01-10
EP0129776A1 (en) 1985-01-02
DE3466269D1 (en) 1987-10-22
JPS6013952A (en) 1985-01-24
ATE29765T1 (en) 1987-10-15

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