EP0178441A1 - Régulateur de la vitesse de rotation pour pompes d'injection d'essence - Google Patents

Régulateur de la vitesse de rotation pour pompes d'injection d'essence Download PDF

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Publication number
EP0178441A1
EP0178441A1 EP85111138A EP85111138A EP0178441A1 EP 0178441 A1 EP0178441 A1 EP 0178441A1 EP 85111138 A EP85111138 A EP 85111138A EP 85111138 A EP85111138 A EP 85111138A EP 0178441 A1 EP0178441 A1 EP 0178441A1
Authority
EP
European Patent Office
Prior art keywords
lever
speed controller
stop
controller according
servomotor
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
EP85111138A
Other languages
German (de)
English (en)
Other versions
EP0178441B1 (fr
Inventor
Ilija Djordjevic
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 EP0178441A1 publication Critical patent/EP0178441A1/fr
Application granted granted Critical
Publication of EP0178441B1 publication Critical patent/EP0178441B1/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • F02D1/10—Transmission of control impulse to pump control, e.g. with power drive or power assistance mechanical

Definitions

  • the invention relates to a speed controller for fuel injection pumps according to the preamble of the main claim.
  • a known speed controller of this type DE-OS
  • the actuating movement of the quantity control element corresponds to the manipulated variable of the servomotor, so that the servomotor in normal quantity control, especially in the idling range, has to take very small adjusting steps, on the other hand, during curtailment or during the transition from start to normal load range rapid displacements of the quantity control element are required.
  • a relatively weak servomotor is sufficient for the normal control range and the fine ratio required there, a correspondingly stronger and also larger one is required for the control and start range and the large steps required there Motor needed.
  • the linear force (the torque) of the stepper motor is directly related to the frequency, so that a very high frequency range up to over one kHz is required for such an all-electric controller.
  • the result is that the engine is relatively expensive and the energy reserve to be treated sparingly in a motor vehicle is more heavily used.
  • the speed controller according to the invention with the characterizing features of the main claim has the advantage that, due to the changing translation on the control lever, a small servo motor is sufficient for the necessary quick adjustments at the start transition and during the reduction, which then in the normal speed and load range without the translation according to the invention can perform the fine adjustment steps of the volume control element.
  • the control lever consists of a first part which interacts with the stop and the servomotor and a second part which interacts with the quantity control member, the parts being connected by a hinge and the rotational movement of the parts being limited to one another, in the manner of a Drag effect.
  • one of the two control lever parts can be configured with two arms with respect to the hinge, a first arm with the other control lever part forming a twisting stop which limits the twisting movement in the direction of decreasing quantity.
  • the first and the second part of the control lever and support of the twist stop form an adjustment unit, as soon as the first part of the control lever hits the swivel stop, the twist stop lifts and the control lever kinks at the hinge point.
  • This variable ratio results in a fine quantity gradation for idling and a high positioning speed, however, with coarser quantity grading in the regulation or when changing from starting speeds to idling speeds.
  • Small and inexpensive low-frequency stepper motors can advantageously be used.
  • FIG. 1 shows a schematic illustration of the first exemplary embodiment
  • 2 shows a diagram for the adjustment paths of the servomotor and the quantity control element
  • 3 shows a variant of the first exemplary embodiment shown in FIG. 1 with two pivot stops
  • Fig. 4 is a travel diagram of this variant
  • Fig; 5 shows a quantity-speed function diagram of this variant
  • 6 shows the second exemplary embodiment
  • FIG. 7 shows an actuation path diagram of the controller according to FIG. 5.
  • a pump piston 2 is set into at least one reciprocating movement by means not shown, the pump piston 2 delivering fuel via a pressure line 4 to the internal combustion engine during its pressure stroke from a pump working chamber 3 until a relief bore 5 of this pump work chamber 3 emerges with its radial mouth 6 from a ring slide 7 serving as a quantity control member, which is arranged so as to be axially displaceable around the pump piston 2.
  • the mouth 6 is opened sooner or later, which corresponds to a smaller or larger injection quantity.
  • the ring slide 7 is thus shifted the most to the right for additional starting quantities, but as far as possible to the left when idling and low load.
  • the ring slide 7 is articulated by a control lever 8 which is pivotable about an axis 9, which in turn is carried by an adjusting lever 10 which is mounted on a stationary adjusting axis 11 and with means of an adjusting screw 12 is adjustable against the force of a retaining spring 13.
  • the pivot axis 9 is adjusted accordingly when the controller is adapted to the injection pump or to the internal combustion engine.
  • the control lever 8 consists of two parts, a first part 15 and a second part 16, which are connected to one another via a hinge 17. At the free end 18 of the second lever part 16, a spring 19 engages, which tries to pull the ring slide 7 in the direction of smaller injection quantities.
  • the spring 19 is suspended with its end facing away from the free lever end 18 on the housing 20 of the controller or the pump.
  • the actuator 21 of an electric servomotor 22 acts on the first lever part 15, the actuating travel s m corresponding to the motor manipulated variable corresponding to the actuating travel s of the ring slide 7.
  • the servomotor 22 is controlled by an electronic control unit processing parameters of the motor and the environment.
  • the first lever part 15 is designed with two arms, with a first arm 23, at the free end of which a stop 24 is provided, which cooperates with the second lever part 16 when the first lever part 15 is rotated accordingly, and with a second arm 25, on which the actuator 21 of the servomotor 22 and the free end 26 cooperates with a pivot stop 27.
  • This pivot stop 27 is adjustable.
  • the numerator corresponds to the actuating path s m of the actuator 21, that is to say the actuating variable of the motor 22, and the denominator corresponds to the actuating path s of the quantity control element 7.
  • a specific adjusting variable s m of the actuator 21 contributes to idle and normal operation, a relatively small displacement s of the annular slide 7, as when s is lifted in the start or full-load operation, as illustrated, the V erfanschlag 24 to the distance shown.
  • the distance between s 1 and s 2 are less than half as large as the distance between s 1 and the origin 0, while the distances between s m2 and s m1 or s m1 and the origin are approximately the same, that is to say with an even adjustment of the actuator 21 If the stop 24 hits the second lever part 16, the corresponding adjustment movement of the ring slide 7 runs much more slowly for the normal and idling speed range.
  • the horizontal lines shown on the curves show the quantity differences in the injection quantities resulting from the adjustment movement of the ring slide 7 for the three different situations, namely in the case of start regulation I, full-load regulation II and normal regulation, in particular idling III, each of these quite different quantity changes representing a uniform step or adjustment path of the actuator 21 correspond, in other words, with an even division of the actuating path of the actuator 21 into individual steps, each step corresponds to a partial injection quantity determined by the section of the horizontal graduation marks in FIG. 5, which differ considerably from one another according to the invention between start, full load and idling control .
  • the spring 119 engages the second lever part 116 between the hinge 117 and the pivot axis 109. From this pivot point 117, the second lever part 116 bifurcates into two arms 33 and 34, on which springs 35 and 36 support that clamp the first lever part 115 between them.
  • the pivoting movement range of the free end 126 of this first lever part 115 is limited by two pivoting stops 37 and 38.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP85111138A 1984-10-01 1985-09-04 Régulateur de la vitesse de rotation pour pompes d'injection d'essence Expired EP0178441B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843435986 DE3435986A1 (de) 1984-10-01 1984-10-01 Drehzahlregler fuer kraftstoffeinspritzpumpen
DE3435986 1984-10-01

Publications (2)

Publication Number Publication Date
EP0178441A1 true EP0178441A1 (fr) 1986-04-23
EP0178441B1 EP0178441B1 (fr) 1988-08-17

Family

ID=6246820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85111138A Expired EP0178441B1 (fr) 1984-10-01 1985-09-04 Régulateur de la vitesse de rotation pour pompes d'injection d'essence

Country Status (4)

Country Link
US (1) US4685433A (fr)
EP (1) EP0178441B1 (fr)
JP (1) JPS61229931A (fr)
DE (2) DE3435986A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703073A1 (de) * 1987-02-03 1988-08-11 Bosch Gmbh Robert Kraftstoffeinspritzpumpe
DE4117267A1 (de) * 1991-05-27 1992-12-03 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE4122879A1 (de) * 1991-07-11 1993-01-14 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568912A (en) * 1949-05-12 1951-09-25 Deere Mfg Co Speed-responsive fuel-control means for internal-combustion engines
GB2034401A (en) * 1978-10-17 1980-06-04 Bosch Gmbh Robert Regulating device for a fuel injection pump
DE3019218A1 (de) * 1979-05-21 1980-11-27 Nissan Motor Kraftstoffeinspritzpumpe der verteilerbauart
GB2069596A (en) * 1980-01-17 1981-08-26 Nissan Motor Fuel injection pump electrical fuel delivery control system
US4416232A (en) * 1980-07-14 1983-11-22 Nippondenso Co., Ltd. Electrical fuel injection pump governor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2802607A1 (de) * 1978-01-21 1979-07-26 Bosch Gmbh Robert Drehzahlregler fuer kraftstoffeinspritzpumpen
DE3121107A1 (de) * 1981-05-27 1982-12-16 Robert Bosch Gmbh, 7000 Stuttgart "drehzahlregler einer kraftstoffeinspritzpumpe"
JPS5867932A (ja) * 1981-10-19 1983-04-22 Nissan Motor Co Ltd 燃料噴射ポンプの吐出量調整装置
DE3237499A1 (de) * 1982-10-09 1984-04-12 Robert Bosch Gmbh, 7000 Stuttgart Schrittmotor zur verstellung von stellgliedern
JPS5974336A (ja) * 1982-10-19 1984-04-26 Nippon Denso Co Ltd デイ−ゼル機関用電気的制御装置
DE3243349A1 (de) * 1982-11-24 1984-05-24 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568912A (en) * 1949-05-12 1951-09-25 Deere Mfg Co Speed-responsive fuel-control means for internal-combustion engines
GB2034401A (en) * 1978-10-17 1980-06-04 Bosch Gmbh Robert Regulating device for a fuel injection pump
DE3019218A1 (de) * 1979-05-21 1980-11-27 Nissan Motor Kraftstoffeinspritzpumpe der verteilerbauart
GB2069596A (en) * 1980-01-17 1981-08-26 Nissan Motor Fuel injection pump electrical fuel delivery control system
US4416232A (en) * 1980-07-14 1983-11-22 Nippondenso Co., Ltd. Electrical fuel injection pump governor

Also Published As

Publication number Publication date
DE3435986A1 (de) 1986-04-10
JPH0568623B2 (fr) 1993-09-29
US4685433A (en) 1987-08-11
EP0178441B1 (fr) 1988-08-17
JPS61229931A (ja) 1986-10-14
DE3564467D1 (en) 1988-09-22

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