EP0356751A2 - Pompe d'injection de combustible pour moteurs à combustion interne - Google Patents

Pompe d'injection de combustible pour moteurs à combustion interne Download PDF

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Publication number
EP0356751A2
EP0356751A2 EP19890114408 EP89114408A EP0356751A2 EP 0356751 A2 EP0356751 A2 EP 0356751A2 EP 19890114408 EP19890114408 EP 19890114408 EP 89114408 A EP89114408 A EP 89114408A EP 0356751 A2 EP0356751 A2 EP 0356751A2
Authority
EP
European Patent Office
Prior art keywords
fuel injection
axis
injection pump
adjusting lever
lever
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.)
Withdrawn
Application number
EP19890114408
Other languages
German (de)
English (en)
Other versions
EP0356751A3 (fr
Inventor
Günter Dipl.-Ing. Bofinger
Claus Dipl.-Ing. Maier
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 EP0356751A2 publication Critical patent/EP0356751A2/fr
Publication of EP0356751A3 publication Critical patent/EP0356751A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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
    • F02D1/04—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 by mechanical means dependent on engine speed, e.g. using centrifugal governors
    • 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
    • F02D1/04—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 by mechanical means dependent on engine speed, e.g. using centrifugal governors
    • F02D1/045—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 by mechanical means dependent on engine speed, e.g. using centrifugal governors characterised by arrangement of springs or weights

Definitions

  • the invention relates to a fuel injection pump according to the preamble of the main claim.
  • a fuel injection pump of this type known from DE-OS-34 18 174
  • an arbitrary accelerator pedal adjustment leads to a changed setting of a speed controller, wherein there is a non-linear relationship between arbitrary adjustment and the degree of intervention on the speed controller to keep a vehicle free of jerks to accelerate or decelerate.
  • a coupling device is located between the arbitrary adjustment and its intervention on the speed controller, for example on a control spring.
  • the fuel injection pump according to the invention with the characterizing features of the main claim has the advantage that Different length tolerances of all elements of the transmission path between the arbitrary adjustment and the intervention on the speed controller with regard to the setting of the idle or the remaining amount can be eliminated. This elimination does not affect the progressive change in quantity per lever angle and thus the specified driving behavior when accelerating. In this way, a maximum of uniformity in driving behavior with regard to part-load and acceleration jerks is achieved. An application is possible with different speed controller types, the characteristic control map of which remains unchanged.
  • the measures listed in the subclaims permit advantageous developments and improvements of the fuel injection pump specified in the main claim.
  • FIG. 1 shows an adjusting lever arrangement for actuating a fuel injection quantity adjusting member of a fuel injection pump 10 of the distributor type known per se and not shown in detail in an internal combustion engine.
  • An accelerator pedal not shown, is connected via a Bowden cable 12 to an adjusting lever 14 which is mounted on an adjusting lever axis 16.
  • the adjusting lever axis 16 is guided by a first eccentric bushing 18 which surrounds it and is supported in a housing 11 of the fuel injection pump.
  • the adjusting lever axis 16 carries a lever arm 20 which is rigidly coupled to it and which, at its end facing away from the adjusting lever axis 16, projects transversely to the pivot axis of the lever arm 20 Has slide 22.
  • the elements lever arm 20, slider 22, slide rail 24 form a coupling device.
  • the second end 23 of the slide rail 24 is connected to an actuator 28 of the speed controller of the fuel injection pump 10, which is only shown in part.
  • the actuator 28 in the form of a control spring is fastened to the second end 23 of the slide rail 24 via a first base point 40 and is connected to a holding bolt 30 at its end facing away from the slide rail 24, a second base point 42.
  • the retaining bolt 30, consisting of a circular truncated cone 34, which has a collar 32, centers over the circular truncated cone 34, an intermediate spring 36 which is supported at one end on the collar 32 and presses at its other end against a control lever 38.
  • the control lever 38 is connected in a known manner to a fuel injection quantity meter, not shown.
  • Figure 3 shows the adjusting lever axis 16 within the eccentric bushing 18 guiding it in two different positions.
  • the center of the adjusting lever axis 16 assumes position A, in another position, however, position B.
  • the horizontal Component of the distance between A and B is marked with X.
  • the connection from the center of the adjusting lever axis 16 to the tensioning lever 38 is shown schematically with the control spring shown as an actuator 28, whose first foot point 40 facing the adjusting lever axis 16 assumes a position 1 in the starting position and a position 2 in the other position Holding bolt 30 adjacent end of the actuator 28, the second base 42, holds the clamping lever 38 in the starting position in position 1, in the other position in position 2; their horizontal distance is marked with X.
  • FIG. 4 A design variant of the solution shown in Figure 2 is shown in Figure 4.
  • the design has changed the adjusting lever axis 16, which is now mounted directly in the housing 11 of the fuel injection pump, and the axis 26, which is enclosed and guided by a second eccentric bushing 44, which is supported in the housing 11 of the fuel injection pump.
  • the adjusting lever 14 connected to the Bowden cable 12 follows this movement by moving it around the center of the adjusting lever axis 16 pivots.
  • the adjusting lever axis 16, rigidly coupled to the adjusting lever 14, takes part in the pivoting and in turn moves the lever arm 20 which is stuck on it.
  • the sliding piece 22 attached to the lever arm 20 transmits the pivoting movement to the sliding rail 24 by sliding along its outer contour 25.
  • the slide rail 24 thereby takes over the movement in that it in turn pivots about the axis 26 against the force of the actuator 28 and the intermediate spring 36 or against the actuating force mediated by the control lever 38 of the known and not further detailed speed controller.
  • the above kinematics shows an adjustment lever arrangement in such a way that, with the same total adjustment path of the adjustment lever 14, the fuel injection quantity is divided such that the fuel injection quantity change is small in the first part of the adjustment lever path from the lower idling in the direction of higher speed, whereas the fuel injection quantity change is larger in the second part of the adjustment lever path is, with this progressive lever adjustment the driving behavior of the motor vehicle is influenced favorably.
  • the control lever 38 assumes position 1 in the starting position and position 2 in the other position.
  • the two positions 1 and 2 are transferred to the actuator 28, which is only shown schematically, by means of the intermediate spring 36 and retaining bolt 30, which are no longer shown.
  • This also forms positions 1 and 2 with the first base point 40, which faces the adjusting lever axis 16.
  • Angle ⁇ i1 and on the other hand an angle ⁇ i2 .
  • the angle ⁇ i1 is smaller than the angle ⁇ i2 .
  • the shift from position 2 to position 1 as a result of the rotation of the first eccentric bushing 18 also causes a shift on the control lever 38, the horizontal component of which is described with dimension X, the tolerance dimension to be compensated.
  • This dimension X also occurs on the adjusting lever axis 16, specifically as a horizontally directed component of the distance between the two solders erected in positions A and B.
  • the axis 26 can be guided in a second eccentric bushing 44, the first eccentric bushing 18 supporting the adjusting lever axis 16 being optionally omitted.

Landscapes

  • 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)
  • Fuel-Injection Apparatus (AREA)
EP19890114408 1988-09-02 1989-08-04 Pompe d'injection de combustible pour moteurs à combustion interne Withdrawn EP0356751A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3829798A DE3829798A1 (de) 1988-09-02 1988-09-02 Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3829798 1988-09-02

Publications (2)

Publication Number Publication Date
EP0356751A2 true EP0356751A2 (fr) 1990-03-07
EP0356751A3 EP0356751A3 (fr) 1990-09-05

Family

ID=6362125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890114408 Withdrawn EP0356751A3 (fr) 1988-09-02 1989-08-04 Pompe d'injection de combustible pour moteurs à combustion interne

Country Status (5)

Country Link
US (1) US5027767A (fr)
EP (1) EP0356751A3 (fr)
JP (1) JPH02104922A (fr)
KR (1) KR900005059A (fr)
DE (1) DE3829798A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1233203B (de) * 1962-02-10 1967-01-26 Fichtel & Sachs Ag Regler fuer die Brennstoffzufuhr von Brennkraftmaschinen
DE2048635C3 (de) * 1970-10-03 1978-06-29 Robert Bosch Gmbh, 7000 Stuttgart Fliehkraftdrehzahlregler für Brennkraftmaschinen
DE2145036C3 (de) * 1971-09-09 1980-08-28 Robert Bosch Gmbh, 7000 Stuttgart Regeleinrichtung für Einspritzpumpen von Brennkraftmaschinen
US4444683A (en) * 1982-11-17 1984-04-24 University Of Utah Glycosylated insulin derivatives
JPS59185826A (ja) * 1983-04-06 1984-10-22 Yanmar Diesel Engine Co Ltd 内燃機関用ガバナの速度変動率可変装置
DE3418174A1 (de) * 1984-05-16 1985-11-21 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3439277A1 (de) * 1984-10-26 1986-04-30 Robert Bosch Gmbh, 7000 Stuttgart Drehzahlregler fuer kraftstoffeinspritzpumpen
JPS61132730A (ja) * 1984-11-30 1986-06-20 Yanmar Diesel Engine Co Ltd 燃料噴射ポンプのガバナ
DE3522434A1 (de) * 1985-06-22 1987-01-02 Bosch Gmbh Robert Drehzahlregler fuer kraftstoffeinspritzpumpen
KR900009522Y1 (ko) * 1985-09-12 1990-10-13 지이제루 기기 가부시기가이샤 내연기관의 급가속 제한장치
DE3741638C1 (de) * 1987-12-09 1988-12-01 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer Brennkraftmaschinen,insbesondere Dieselbrennkraftmaschinen

Also Published As

Publication number Publication date
DE3829798A1 (de) 1990-03-08
EP0356751A3 (fr) 1990-09-05
KR900005059A (ko) 1990-04-13
US5027767A (en) 1991-07-02
JPH02104922A (ja) 1990-04-17

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