EP0243874B1 - Dispositif de commande du début et de la durée d'injection du combustible pour un moteur à combustion interne - Google Patents

Dispositif de commande du début et de la durée d'injection du combustible pour un moteur à combustion interne Download PDF

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Publication number
EP0243874B1
EP0243874B1 EP87105933A EP87105933A EP0243874B1 EP 0243874 B1 EP0243874 B1 EP 0243874B1 EP 87105933 A EP87105933 A EP 87105933A EP 87105933 A EP87105933 A EP 87105933A EP 0243874 B1 EP0243874 B1 EP 0243874B1
Authority
EP
European Patent Office
Prior art keywords
adjusting device
carrier body
shaft
ram
machined
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 - Lifetime
Application number
EP87105933A
Other languages
German (de)
English (en)
Other versions
EP0243874A2 (fr
EP0243874A3 (en
Inventor
Joachim Altdorf
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to AT87105933T priority Critical patent/ATE63975T1/de
Publication of EP0243874A2 publication Critical patent/EP0243874A2/fr
Publication of EP0243874A3 publication Critical patent/EP0243874A3/de
Application granted granted Critical
Publication of EP0243874B1 publication Critical patent/EP0243874B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to an adjusting device according to the preamble of claim 1.
  • a delivery start adjustment device for an in-line injection pump of an internal combustion engine is known, which is integrated into the housing of the in-line injection pump.
  • a tappet which is arranged between the tappet rod and the camshaft integrated in the in-line injection pump, is moved tangentially to the camshaft by a device which can be adjusted via two eccentrically mounted adjusting pins.
  • an additional overall height of the in-line injection pump is required to accommodate the adjusting device spatially.
  • the eccentrically mounted adjustment pins interacting with the adjustment device must be manufactured in completely identical construction and must be aligned precisely with one another to ensure trouble-free operation.
  • a generic delivery start adjustment device is known from GB-A 2 161 545.
  • This conveying start adjustment device has a support body transversely to the direction of movement of the plunger, in which the plunger is movably mounted in a bore arranged axially parallel to the plunger movement direction.
  • This adjustment device requires high construction costs due to the additional mounting holes for the support body. In addition, the adjustment accuracy is limited, since small displacements of the support body cause large start-up adjustments.
  • the object of the invention is to provide an adjusting device with which a plunger, which can be moved radially to the shaft by a cam arranged on a shaft, can be displaced tangentially to the shaft, the adjusting device being mechanically simple and space-saving and easy in an internal combustion engine can be installed, and an exact delivery start adjustment is made possible.
  • the adjusting device has a support body which is slidably mounted in a fixed housing at an acute angle to the radial direction of movement of the plunger caused by the cam and an extension is arranged on the support body in the shaft-side axial extension of the support body, which the shaft and the cam is tangentially covered on one side in a partial section without contact, a mechanically simple construction is provided which is easy to install and space-saving.
  • the bore in the housing for example of an internal combustion engine, which is necessary anyway for guiding the tappet, can already be produced during the housing production without additional effort in accordance with the requirements given by the installation of the adjusting device according to the invention.
  • the adjustment device which essentially consists of the supporting body, likewise does not pose any special manufacturing requirements and can be manufactured in a simple manner as a normal series part.
  • the delivery start adjustment accuracy is high, since a corresponding transmission ratio of the movements is set by the arrangement of the support body at an acute angle to the direction of movement of the plunger.
  • the extension has a recess in the end region pointing away from the support body, into which an actuating shaft arranged transversely to the extension engages with a nose, the nose in the region interacting with the recess having a surface contour that has a play-free contact surface in a predetermined range of rotation to the recess.
  • This design provides a simple device for the axial adjustment of one or more supporting bodies.
  • the actuating shaft is mounted axially parallel to the camshaft in suitable bearing devices.
  • the already existing bearing blocks of the camshaft, in which only an additional hole has to be drilled, are suitable for this.
  • the actuating shaft in turn is now turned via a corresponding lever on which an adjusting piston is articulated.
  • the adjusting piston can be adjusted, for example, when using the adjusting device as a delivery start adjustment device for an injection pump element of an internal combustion engine by the known adaptation groups, such as load-dependent delivery start or boost pressure-dependent delivery start adjustment group. This can be done on series parts like them used for example in distributor injection pumps.
  • the adjusting device according to the invention can be used in particular in the case of individual injection pump elements which are inserted directly into the internal combustion engine housing.
  • the adjustment device is also intended to be installed in in-line injection pumps.
  • both components are secured by pins which engage in corresponding grooves in the housing or the support body.
  • the adjustment device according to the invention can be used both for adjusting the start of delivery of the injection pump elements of an internal combustion engine and for changing the valve timing.
  • both the inlet and outlet valves are adjusted alone or together, but corresponding adjustment devices.
  • a central shaft 2 serving as a camshaft is arranged in the housing 1 of an internal combustion engine cams 3 arranged next to one another actuate the gas exchange valves and the injection pump elements 29 of the internal combustion engine.
  • An injection pump element 29 is fastened on a flange 4 of the housing 1.
  • the flange 4 is arranged at right angles to a connecting line 5 to the camshaft 2.
  • An opening 6 is machined into the flange 4, through which a push rod 7 of an injection pump element 29 is passed.
  • the push rod 7 ends on the camshaft side in a plate 8, on which a spring 9 pointing toward the injection pump element 28 is supported.
  • a push rod 10 is arranged in the axial extension of the connecting line 5.
  • the plunger 10 has a surface 11 on the push rod side, which is arranged parallel to the plate 8 and on which the plate 8 is supported.
  • the distance a and b between the outer diameter of the plate 8 and the inner diameter of an annular extension 12 of the surface 11 is such that it does not become zero over the entire tangential adjustment range of the plunger 10.
  • annular extension 12 a On the side of the surface 11 facing the camshaft 2 there is also an annular extension 12 a.
  • annular extension 12 a two bores are machined axially parallel to the camshaft 2, into which a shaft 13 is inserted, on which an impeller 14 is mounted within the annular extension.
  • This impeller 14, which is aligned axially parallel to the camshaft 2 runs on the radial circumference of the camshaft 2 or the cam 3 and moves the tappet 10 and correspondingly the tappet rod 7 along the connecting line 5 in accordance with the surface contour of the camshaft 2 or the cam 3.
  • the plunger 10 is guided in a support body 15, which is arranged in a recess 16 of the housing 1.
  • the direction of movement of the support body 15, which can be represented by its center line 17, is inclined by an angle ⁇ to the connecting line 5.
  • a bore 18 which is parallel to the connecting line 5 and which corresponds to the outer diameter of the plunger 10 is machined into the support body 15.
  • the support body 15 also has a radial bore 19 into which a pin 20 is pressed.
  • the support body 15 is preferably manufactured as a cylindrical component.
  • the support body 15 is also possible according to the invention to secure the support body 15, which is manufactured as a cylindrical component, against rotation by means of sliding webs 30, which are supported on both sides of a cam 3 on the base circle of camshaft 2. If the outer contour of the support body deviates from a circular shape - for example in the case of a rectangular outer contour - then a rotation lock can be dispensed with, since the support body is then guided in a correspondingly designed recess 16 so that it cannot rotate.
  • a radial blind hole 22 is machined in the area of the surface 11, in which a pin 23 is also inserted.
  • the pin 23 protrudes with its end protruding from the blind hole 22 into a groove 24 which is axially parallel in the recess 16 of the support body 15 is incorporated into the connecting line 5.
  • the plunger 10 is thus also secured against rotation with respect to the supporting body 15 and with respect to the housing 1.
  • the support body 15 is moved axially in the direction of the center line 17 by an actuating shaft 25 which engages with a lug 26 in a recess 27 which is let into an extension 28 of the support body 15.
  • the actuating shaft 25 is arranged axially parallel to the camshaft 2 and is provided with at least one lever, by which the actuating shaft 25 can be rotated through predetermined angular ranges. This rotation is carried out by an adjusting piston, not shown, which can be adjusted hydraulically, for example, by the controllable fuel pressure.
  • the support body 15 is displaced in the direction of the flange 4.
  • the plunger 10 is displaced such that the distance b is reduced and the distance a is increased.
  • the bone shaft 2 rotates, for example, in the direction of the arrow shown, such an adjustment of the plunger 10 means a shift in the start of delivery in the "early” direction.
  • a movement of the actuating shaft 25 directed against the arrow would accordingly cause the start of delivery to be shifted towards the "late” direction if the camshaft rotation direction remains unchanged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Claims (6)

1. Dispositif de commande, grâce auquel un poussoir (10), qui peut être déplacé radialement par rapport à un arbre (2) par une came (3) disposée sur cet arbre (2), est susceptible d'être déplacé tangentiellement par rapport à cet arbre (2), ce dispositif de commande comportant une structure porteuse (15) dans laquelle il est prévu un alésage (18) dont l'axe est parallèle à la direction de déplacement (5) du poussoir (10), et qui entoure ce poussoir (10), tandis que sur la structure porteuse (15) est fixé un prolongement (28) grâce auquel cette structure porteuse (15) est susceptible d'être déplacée dans un carter fixe (1) selon un angle (α) par rapport à la direction de déplacement du poussoir (10) sous l'action de la came (3), un arbre de manoeuvre (25) disposé transversalement par rapport à l'appendice (28) venant en prise sur cet appendice (28), dispositif de commande caractérisé en ce que la structure porteuse est susceptible d'être déplacée sous un angle aigu (α) par rapport à la direction du déplacement radial du poussoir (10) sous l'action de la came (3), tandis que le prolongement (28) est disposé sur une prolongation axiale côté arbre de la structure porteuse (15) et recouvre d'un côté tangentiellement, sans les toucher, l'arbre (2) et la came (3) sur un tronçon partiel.
2. Dispositif de commande selon la revendication 1, caractérisé en ce que dans la zone d'extrémité, éloignée de la structure porteuse (15), du prolongement (28), est usiné un évidement (27) dans lequel vient en prise par un ergot (26) l'arbre de manoeuvre (25), l'ergot (26) comportant dans sa zone coopérant avec l'évidement (27) un contour superficiel qui, dans une étendue de rotation prédéfinie, établit une surface de contact sans jeu avec l'évidement (27).
3. Dispositif de commande selon la revendication 1 ou la revendication 2, caractérisé en ce que dans la structure porteuse (15) est usiné un perçage (19), dans lequel est mise en place une broche (20) qui est guidée dans une gorge (21) usinée dans le carter (1).
4. Dispositif de commande selon une des revendications 1 à 3, caractérisé en ce que dans le poussoir (10) est usiné un trou borgne (22) dans lequel est mis en place une broche (23) qui est guidée dans une gorge longitudinale (24) usinée dans l'alésage (18) de la structure porteuse (15).
5. Dispositif de commande selon une des revendications 1 à 4, caractérisé en ce que ce dispositif de commande est utilisé pour le réglage du début de refoulement d'au moins un élément (29) de pompe d'injection de combustible d'un moteur à combustion interne.
6. Dispositif de commande selon une des revendications 1 à 5, caractérisé en ce que ce dispositif est utilisé pour modifier les temps de commande des soupapes d'échange gazeux d'un moteur à combustion interne.
EP87105933A 1986-04-26 1987-04-23 Dispositif de commande du début et de la durée d'injection du combustible pour un moteur à combustion interne Expired - Lifetime EP0243874B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105933T ATE63975T1 (de) 1986-04-26 1987-04-23 Verstelleinrichtung fuer foerderbeginn und steuerzeiten einer brennkraftmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3614281 1986-04-26
DE19863614281 DE3614281A1 (de) 1986-04-26 1986-04-26 Verstelleinrichtung fuer foerderbeginn und steuerzeiten einer brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP0243874A2 EP0243874A2 (fr) 1987-11-04
EP0243874A3 EP0243874A3 (en) 1989-09-27
EP0243874B1 true EP0243874B1 (fr) 1991-05-29

Family

ID=6299665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105933A Expired - Lifetime EP0243874B1 (fr) 1986-04-26 1987-04-23 Dispositif de commande du début et de la durée d'injection du combustible pour un moteur à combustion interne

Country Status (4)

Country Link
US (1) US4760831A (fr)
EP (1) EP0243874B1 (fr)
AT (1) ATE63975T1 (fr)
DE (2) DE3614281A1 (fr)

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DE3821888A1 (de) * 1988-06-29 1990-01-11 Pierburg Gmbh Brennstoffpumpe
DE3910794C2 (de) * 1989-04-04 1995-05-11 Kloeckner Humboldt Deutz Ag Dieselbrennkraftmaschine
JP2843614B2 (ja) * 1989-09-29 1999-01-06 ヤマハ発動機株式会社 ２サイクルディーゼルエンジン
DE3935883C2 (de) * 1989-10-27 1996-08-01 Kloeckner Humboldt Deutz Ag Viertakt-Dieselbrennkraftmaschine
DE4118555A1 (de) * 1991-06-06 1992-12-10 Bosch Gmbh Robert Foerderbeginnverstelleinrichtung einer kraftstoffeinspritzpumpe
DE4212255C2 (de) * 1992-04-11 1996-12-19 Daimler Benz Ag Anordnung einer Kraftstoff-Einspritzvorrichtung am Gehäuse einer Brennkraftmaschine
DE4227851A1 (de) * 1992-08-22 1994-02-24 Bosch Gmbh Robert Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE4410124A1 (de) * 1994-03-24 1995-09-28 Schaeffler Waelzlager Kg Verdrehsicherung eines Traversenstößels einer Ventilbetätigungseinrichtung einer Brennkraftmaschine
DE19548808A1 (de) * 1995-12-27 1997-07-03 Mwp Mahle J Wizemann Pleuco Gm Übertragungselement, insbesondere Rollenstößel zur Betätigung eines Ventils für insbesondere einen Verbrennungsmotor
KR100992823B1 (ko) * 2007-12-13 2010-11-08 기아자동차주식회사 연료펌프 세트
US8646436B2 (en) * 2010-07-06 2014-02-11 Toyota Boshoku Kabushiki Kaisha Fuel pump attachment structure
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US10677210B2 (en) * 2017-11-30 2020-06-09 Cfr Engines Canada Ulc Air-assisted fuel injection system for ignition quality determination

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Also Published As

Publication number Publication date
EP0243874A2 (fr) 1987-11-04
DE3770330D1 (de) 1991-07-04
ATE63975T1 (de) 1991-06-15
US4760831A (en) 1988-08-02
EP0243874A3 (en) 1989-09-27
DE3614281A1 (de) 1987-10-29

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