EP0067369A2 - Dispositif d'injection de carburant pour moteurs à combustion interne - Google Patents

Dispositif d'injection de carburant pour moteurs à combustion interne Download PDF

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Publication number
EP0067369A2
EP0067369A2 EP82104851A EP82104851A EP0067369A2 EP 0067369 A2 EP0067369 A2 EP 0067369A2 EP 82104851 A EP82104851 A EP 82104851A EP 82104851 A EP82104851 A EP 82104851A EP 0067369 A2 EP0067369 A2 EP 0067369A2
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection device
fuel
valve
stroke
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.)
Granted
Application number
EP82104851A
Other languages
German (de)
English (en)
Other versions
EP0067369A3 (en
EP0067369B1 (fr
Inventor
Konrad Dr. Eckert
Hermann Dr. Eisele
Helmut Laufer
Max Dr. Straubel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0067369A2 publication Critical patent/EP0067369A2/fr
Publication of EP0067369A3 publication Critical patent/EP0067369A3/de
Application granted granted Critical
Publication of EP0067369B1 publication Critical patent/EP0067369B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F02M41/128—Varying injection timing by angular adjustment of the face-cam or the rollers support
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F02M41/125—Variably-timed valves controlling fuel passages
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically

Definitions

  • the invention relates to a fuel injection device according to the preamble of the main claim.
  • an injection device known from DE-OS 19 19 969 the amount of fuel which is to be injected during the delivery stroke of the pump piston of an injection pump is metered in during the suction stroke of the pump piston by means of a solenoid valve which is clocked or controlled analogously.
  • the metered quantity is determined by the opening time of the solenoid valve, the opening phase of this valve lying exclusively in the suction stroke area of the pump piston.
  • the pressure conditions in the working space and the valve cross section of the fuel injection pump influence the metering quantity.
  • the metering stroke of the solenoid valve begins with the suction stroke of the associated pump pistons.
  • a spray start adjustment requires a change in the suction stroke start, so that this suction stroke start must be entered exactly when calculating the opening time of the solenoid valve.
  • the dynamic conditions at the reversal point of the pump piston during the transition from the delivery stroke to the suction stroke are difficult to control. Because of the duplicate Pump system in this fuel injection pump, the device is still very expensive.
  • the fuel injection device with the characterizing features of the main claim has the advantage that a flushing phase follows the delivery phase, that is to say the period in which fuel is delivered into the injection lines.
  • this flushing phase which also includes the remaining pressure stroke of the pump piston, the pump workspace of the fuel injection pump is constantly filled with fuel via the electrically actuable valve and, if necessary, via the relief line, if this leads to the pump suction chamber usually present in a fuel injection pump, which fuel is below that in the pump suction chamber or the pressure in the fuel supply source.
  • the opening time of the valve in relation to the speed or the opening phase over a certain suction stroke length of the pump piston is a precise measure of the injection quantity. Since z. B. following the delivery stroke of the pump piston, the electrically operable metering valve is already open, the closing time of the relief channel through the control edge advantageously determines the beginning of metering. This closing takes place without the loss of time to be taken into account in the solenoid valve, so that the metering quantity can only be influenced by the closing time of the valve at the end of the metering phase.
  • FIG. 1 shows the exemplary embodiment in a basic representation
  • FIG. 2a shows a diagram of the switching time of the metering valve over the angle of rotation
  • FIG. 2b shows the stroke course of the pump piston in association with the switching times of the metering valve
  • FIG. 3 shows a development of the embodiment according to FIG. 1 4 shows an enlarged view of the device for recording the switching times of the relief channel
  • FIG. 5 shows a first modified form of the device according to FIG. 4
  • FIG. 6 shows a second modified form of the device according to FIG 4
  • FIG. 7 shows a device for determining the stroke movement of the pump piston
  • FIG. 8 shows a modification of the embodiment according to FIG. 1 with a modified spray timing device
  • a bore 2 is provided in a pump housing 1, in which a pump piston 3 encloses a pump working space 4.
  • the pump piston is passed through a cam disk 5, which runs on a roller ring 6 Means not shown driven and performs a reciprocating pump movement with a suction stroke and a delivery stroke during its rotational movement.
  • the fuel supply to the pump work chamber takes place via a fuel inlet channel 8, which leads from a pump suction chamber 9.
  • This suction chamber is supplied with fuel from a fuel tank 12 by means of a fuel feed pump 11, the pressure in the pump suction chamber 9 being adjusted with the aid of a pressure control valve 14 which is connected in parallel with the fuel feed pump 11.
  • an electrically actuated valve 16 which, for. B. can be a solenoid valve, used as a fuel metering device.
  • a check valve 17, which opens in the direction of the fuel inflow into the pump work chamber 4, is also provided downstream of this valve.
  • a blind bore 18, which is arranged in the pump piston 3, leads from the pump work chamber 4, from the end of which a radial bore 19 leads to the outside.
  • Another radial bore 20 connects the blind bore 18 to a distributor groove 21, through which delivery lines 22 are connected to the pump work chamber 4 in succession when the pump piston rotates and its delivery stroke.
  • the delivery lines are distributed according to the number of cylinders to be supplied to the associated internal combustion engine on the circumference of the bore 2 and each contain a relief valve 23 and are each connected to an injection valve 24.
  • an annular groove 26 is also provided, which is connected to the pump suction chamber 9 via at least one bore 27.
  • the annular groove 26 is arranged so that the radial bore 19th is opened in the pump piston 2 from a maximum delivery stroke, so that the fuel delivered from this point in the further stroke movement of the pump piston 2 can flow out via the blind bore 18 serving as a relief channel, the radial bore 19 and the bore 27 into the suction chamber 9 and thus the pressure delivery is interrupted in the delivery line 22.
  • a spray adjustment piston 29 is also provided, which is coupled to the cam ring 5 and is adjustable against the force of a spring 30.
  • the injection adjustment piston includes a pressure chamber 31, which is connected to the pump suction chamber via a throttle 32 and is therefore acted upon by the speed-dependent pressure in the pump suction chamber.
  • the injection timing piston is used to adjust the injection timing to early by rotating the cam ring with increasing speed.
  • the pressure chamber 31 is also connected to the suction side of the feed pump 11 via a solenoid valve 34 and can be relieved with the aid of this valve.
  • the solenoid valve 34 is controlled by a control device 36, which also serves to control the electrically actuable valve 16 in the fuel inlet duct.
  • the control unit works in accordance with parameters that have to be taken into account for the dimensioning and the timing of the fuel injection quantity.
  • the control unit can, for. B. contain at least one map, in the target values for the amount of fuel to be injected in indirect or direct form are included. In a manner known per se, the speed, the temperature, the air pressure and the load can be taken into account as parameters.
  • signals of a needle stroke transmitter in the injection valve 24 can be detected as further parameters for determining the actual start of injection and the actual fuel injection duration.
  • control signals can also be used via a pressure transmitter 38, which is suitably arranged on the high-pressure side of the fuel injection pump, to determine the start of delivery or the delivery period.
  • a pressure transmitter 38 which is suitably arranged on the high-pressure side of the fuel injection pump, to determine the start of delivery or the delivery period.
  • FIG. 2b shows the elevation curve of the pump piston over the angle of rotation ⁇ .
  • This curve part B of the elevation curve runs very flat and is linear except for the border area at the reversal points of the pump piston.
  • the pressure stroke part A of the curve in Fig. 2b is divided into three sections.
  • the fuel present in the pump work chamber 4 is compressed until the delivery pressure, which is an opening of the Nozzle 24 causes is reached.
  • the second part of the curve now extends between FB and EO. In this area, fuel is delivered into the delivery channel 22.
  • the check valve 17 continues to be closed by the delivery pressure, possibly supported by the spring installed there. So that the electrically actuated valve 16, which is here z. B. is designed as a slide valve, relieved of pressure.
  • the effective suction stroke of the pump piston begins from ES. Fuel is drawn in until the solenoid valve on MS closes.
  • the effective suction stroke length ⁇ 2 is thus determined on the one hand by the geometric design of the fuel injection pump or by the Position of the control edge delimiting the annular groove 26 and on the other hand determined by the switching time of the solenoid valve.
  • the switching times of the solenoid valve are recorded in FIG. 2a, where o (1 is the total opening time of the solenoid valve and ⁇ 2 denotes the time effective for the metering.
  • the solenoid valve can be opened much earlier than the actual effective suction stroke begins and since there is still a rinsing phase between the effective delivery stroke and the effective suction stroke of the pump piston (EO-ES), when the solenoid valve is opened, the spraying time within the possible spray timing adjustment range does not need to be taken into account will.
  • the fuel metering control does not influence or hinder the spray timing adjustment options. Due to the flat cam profile during the suction stroke, there is the further advantage that the pump piston can constantly follow the cam even at high speed without the pump piston jumping off within the effective suction stroke length and thus influencing the amount of fuel drawn in.
  • the cam pitch is advantageously linear over the possible length of the effective suction stroke, which has a particularly advantageous effect in the case of correction interventions.
  • the type of metering is not dependent on the linearity of the survey curve, but it does facilitate accurate metering.
  • the effective suction stroke length you get a very good metering accuracy of the amount of fuel to be metered.
  • the effective suction stroke length for metering can be controlled directly without feedback of the amount of fuel actually injected being required. Very good control results are obtained if the actual fuel injection quantity is detected in a manner known per se by means of the control unit and compared in a comparison device of the control unit with a target fuel quantity signal formed there.
  • the actual fuel quantity can be determined by a needle stroke transmitter or by a correspondingly evaluated pressure signal from the pressure transmitter 38.
  • the target fuel quantity is formed from the parameters mentioned at the beginning with the load as a reference variable.
  • the actual opening time of the solenoid valve is then corrected in accordance with the comparison result when the actual fuel quantity deviates from the target value.
  • the basic opening duration signal of the valve 16 is formed in accordance with the target fuel quantity signal.
  • a transmitter 40 is advantageously provided, as shown in FIG. 3, for the precise detection of the collection point at which the relief channel 19 is closed again (ES). 3 corresponds to that of FIG. 1.
  • FIG. 4 such an encoder is shown larger.
  • the bore 27 'in this development of the fuel injection device also leads from the annular groove 26 and via the transmitter h0 with complete pressure relief to the suction side of the fuel delivery pump 11 or to the fuel tank 12.
  • the transmitter 40 is thus in a pressure-relieved space 41 Bore 27 ' in the pressure-relieved space 41 is controlled by a valve closing part 43 which is fastened on a leaf spring 45. This is attached at the other end via an insulating piece 46 on the pump housing, which also represents the ground connection.
  • An electrical line 42 leads from the leaf spring, which in another embodiment can also be a membrane or spider in a suitable configuration, to the control device 36.
  • a throttle bore 48 is provided coaxially with the axis of the bore 27 ′ in the valve closing part, via which the bore 27 'is constantly connected to the space 41 even when the valve closing member 43 is in the closed position.
  • pressure can build up in the bore 27 ′ as long as fuel continues to flow from the pump work chamber 4 via the blind bore 18. This is the case as long as the radial bore 19 is in connection with the annular groove 26 and as long as the solenoid valve 16 is open. This condition applies to the area of the suction stroke B between OT and ES.
  • valve closing part 43 Under the resulting pressure, the valve closing part 43 lifts off its seat on the bore 27 'and thus interrupts the circuit to ground. However, as soon as the connection between the radial bore 19 and the bore 27 'is interrupted again in the course of the suction stroke of the pump piston, the valve closing part 43 returns to its seat and closes the circuit. This is the signal that the effective suction stroke has started. Accordingly, the signal is processed in control unit 36, which can advantageously be done with the aid of an integrating device.
  • the integrating device With the closing signal of the encoder 14, the integrating device is set and as soon as the output value of the integrating device has reached the setpoint value for the fuel quantity given by the control device 36, a switching signal is emitted from a comparing device of both values to the solenoid valve for closing the fuel inlet channel.
  • the switching time 'of the valve is purely hubplainn thank 16
  • the running time of the integrator must be corrected by a speed-adapted integration time constant for the integration. This can be done with known methods, on the one hand by making the design of the integrator itself speed-dependent in an analogous manner or by integrating the integrator in constant integration steps with speed-dependent frequency.
  • a correction signal can be generated from an TDC signal, which is achieved with the aid of the transmitter 39, and the closing signal, which is output by the transmitter 40, which corrects the opening phase of the valve, which is switched in synchronism with the speed.
  • the configuration of the transmitter 40 according to FIGS. 3 and 4 also permits the formation of an opening signal for opening the bore 27 '.
  • this opening signal for example, an opening signal for the valve 16 could be formed.
  • FIG. 5 shows an alternative embodiment of the transmitter for opening or closing the bore 27 '.
  • the throttle bore 48 provided in FIG. 4 in the closing part 43 is in this Design in a branch duct 49 ', which leads to the pressure-relieved space 41, is provided as a throttle 50.
  • a throttle 51 is provided at the outlet of the bore 27 'in the pressure-relieved space 41, and a pressure transmitter 52 is arranged upstream of this throttle 51 in the wall of the bore 27'.
  • the pressure signal emitted by this is preferably converted into the closing signal or the opening signal via a threshold switch.
  • a stroke sensor 54 is assigned to the pump piston, which is shown in FIG. 7.
  • a pulse generator 55 is provided with the pump piston 3 parallel to the pump piston axis, which a transducer, for. B. an inductive pickup 56 is assigned.
  • the pulse generator can e.g. B. consist of magnetized parts lying one behind the other or be designed as a toothed rack. Such pulse generators are known in principle and need not be described in more detail here.
  • the signals emitted by the transmitter 56 are then integrated in an integrator, the speed or the lifting speed of the pump piston no longer having to be taken into account.
  • FIG. 8 shows a pump piston 60 as one of the pump pistons In-line pump.
  • This pump piston can be moved up and down in a cylinder 61 for the purpose of suction and fuel delivery and can also be rotated at the same time. It encloses a pump working chamber 62 in the pump cylinder, from which a fuel injection nozzle is supplied with fuel.
  • a fuel inlet duct 8 ′ also opens into the working chamber 62 and, like in FIG. 1, contains a check valve 17 ′ and an electrically operable metering valve 16.
  • the pump piston has an oblique control edge 63 which delimits a partial annular groove 64 in the outer surface of the pump piston.
  • the partial ring groove is connected to the pump work chamber 62 via a longitudinal groove 65 or via a corresponding bore.
  • the oblique control edge works together with a relief channel 27 ′′, through which the displaced fuel can flow out of the working space 62 during a residual stroke of the pump piston 60.
  • the relief channel 27 becomes Sooner or later opened or closed again, the rotary position of the piston can thus achieve an injection adjustment, ie a variable delivery end.
  • the correction signal is taken into account by a corresponding control device when forming the opening pulse of the electrically actuated valve.
  • FIG. 9 shows, it is also possible to use several electrically operated metering valves for several pump pistons to be supplied with fuel.
  • a check valve 67, 68 is advantageously assigned to each individual pump piston.
  • the condition for such an embodiment is that the cam descent flank, ie the stroke profile of the pump piston, is the same for both pistons during the effective suction stroke.
EP82104851A 1981-06-12 1982-06-03 Dispositif d'injection de carburant pour moteurs à combustion interne Expired EP0067369B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813123325 DE3123325A1 (de) 1981-06-12 1981-06-12 Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen
DE3123325 1981-06-12

Publications (3)

Publication Number Publication Date
EP0067369A2 true EP0067369A2 (fr) 1982-12-22
EP0067369A3 EP0067369A3 (en) 1984-01-11
EP0067369B1 EP0067369B1 (fr) 1986-09-10

Family

ID=6134541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104851A Expired EP0067369B1 (fr) 1981-06-12 1982-06-03 Dispositif d'injection de carburant pour moteurs à combustion interne

Country Status (4)

Country Link
US (1) US4655184A (fr)
EP (1) EP0067369B1 (fr)
JP (1) JPS57212361A (fr)
DE (2) DE3123325A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2546237A1 (fr) * 1983-05-19 1984-11-23 Bosch Gmbh Robert Pompe d'injection de carburant pour moteurs a combustion interne
FR2617908A1 (fr) * 1987-07-06 1989-01-13 Bosch Gmbh Robert Systeme d'injection de carburant pour moteurs a combustion interne
EP0439769A1 (fr) * 1990-01-30 1991-08-07 Robert Bosch Gmbh Pompe à injection de combustible
FR2688269A1 (fr) * 1992-03-05 1993-09-10 Bosch Gmbh Robert Pompe a injection de carburant pour moteurs thermiques, comprenant un organe de reglage et une installation de commande de l'instant de l'injection.

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336871A1 (de) * 1983-10-11 1985-04-25 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer mehrzylindrige brennkraftmaschinen
DE3633107A1 (de) * 1986-04-10 1987-10-15 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung fuer brennkraftmaschinen
US4884549A (en) * 1986-04-21 1989-12-05 Stanadyne Automotive Corp. Method and apparatus for regulating fuel injection timing and quantity
DE3719831A1 (de) * 1987-06-13 1988-12-22 Bosch Gmbh Robert Kraftstoffeinspritzpumpe
DE4017868A1 (de) * 1990-06-02 1990-10-31 Siegfried Dipl Phys Stiller Mischkammer zur verduennung und haemolyse von blut
DE69720603T2 (de) * 1996-07-05 2004-03-04 Nippon Soken, Inc., Nishio Hochdruckpumpe
JP2001221118A (ja) * 2000-02-07 2001-08-17 Bosch Automotive Systems Corp 燃料噴射装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE840477C (de) * 1941-11-16 1952-06-03 Bosch Gmbh Robert Einspritzpumpe, insbesondere fuer Brennkraftmaschinen
DE1917927A1 (de) * 1969-04-09 1970-10-29 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer Brennkraftmaschinen
DE2210400A1 (de) * 1971-03-06 1972-09-21 Nippon Denso Co , Ltd , Kanya, Aichi (Japan) Kraftstoffeinspritzvomchtung fur Brennkraftmaschinen
FR2389005A1 (fr) * 1977-04-30 1978-11-24 Lucas Industries Ltd Appareil de pompage de combustible liquide
EP0014142A1 (fr) * 1979-01-25 1980-08-06 AlliedSignal Inc. Injecteur de combustible avec contrôle éléctronique
GB2061403A (en) * 1979-10-17 1981-05-13 Bosch Gmbh Robert Fuel injection pump

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1913808C3 (de) * 1969-03-19 1976-01-08 Robert Bosch Gmbh, 7000 Stuttgart Überdrehsicherung für Einspritzpumpen von Brennkraftmaschinen
DE1919707A1 (de) * 1969-04-18 1970-11-12 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer mehrzylindrige Brennkraftmaschinen
DE1919969C2 (de) * 1969-04-19 1983-10-27 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe für Brennkraftmaschinen
JPS53131325A (en) * 1978-01-31 1978-11-16 Nippon Denso Co Ltd Distrubution type fuel injection pump
JPS5641438A (en) * 1979-09-10 1981-04-18 Diesel Kiki Co Ltd Load timer for electronically controlled distribution type fuel injection pump
DE2945484A1 (de) * 1979-11-10 1981-05-21 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzumpe
JPS5675928A (en) * 1979-11-26 1981-06-23 Isuzu Motors Ltd Fuel injection device
DE3017275A1 (de) * 1980-05-06 1981-11-12 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer selbstzuendende brennkraftmaschinen
DE3148688A1 (de) * 1981-12-09 1983-06-16 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum erzeugen eines kraftstoffmengensignales

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE840477C (de) * 1941-11-16 1952-06-03 Bosch Gmbh Robert Einspritzpumpe, insbesondere fuer Brennkraftmaschinen
DE1917927A1 (de) * 1969-04-09 1970-10-29 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer Brennkraftmaschinen
DE2210400A1 (de) * 1971-03-06 1972-09-21 Nippon Denso Co , Ltd , Kanya, Aichi (Japan) Kraftstoffeinspritzvomchtung fur Brennkraftmaschinen
FR2389005A1 (fr) * 1977-04-30 1978-11-24 Lucas Industries Ltd Appareil de pompage de combustible liquide
EP0014142A1 (fr) * 1979-01-25 1980-08-06 AlliedSignal Inc. Injecteur de combustible avec contrôle éléctronique
GB2061403A (en) * 1979-10-17 1981-05-13 Bosch Gmbh Robert Fuel injection pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2546237A1 (fr) * 1983-05-19 1984-11-23 Bosch Gmbh Robert Pompe d'injection de carburant pour moteurs a combustion interne
FR2617908A1 (fr) * 1987-07-06 1989-01-13 Bosch Gmbh Robert Systeme d'injection de carburant pour moteurs a combustion interne
EP0439769A1 (fr) * 1990-01-30 1991-08-07 Robert Bosch Gmbh Pompe à injection de combustible
FR2688269A1 (fr) * 1992-03-05 1993-09-10 Bosch Gmbh Robert Pompe a injection de carburant pour moteurs thermiques, comprenant un organe de reglage et une installation de commande de l'instant de l'injection.

Also Published As

Publication number Publication date
DE3123325A1 (de) 1982-12-30
EP0067369A3 (en) 1984-01-11
EP0067369B1 (fr) 1986-09-10
JPS57212361A (en) 1982-12-27
US4655184A (en) 1987-04-07
DE3273144D1 (en) 1986-10-16
JPH0263105B2 (fr) 1990-12-27

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