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EP0560126A1 - Device for actuating an injection pump - Google Patents

Device for actuating an injection pump Download PDF

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Publication number
EP0560126A1
EP0560126A1 EP93102908A EP93102908A EP0560126A1 EP 0560126 A1 EP0560126 A1 EP 0560126A1 EP 93102908 A EP93102908 A EP 93102908A EP 93102908 A EP93102908 A EP 93102908A EP 0560126 A1 EP0560126 A1 EP 0560126A1
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EP
European Patent Office
Prior art keywords
lubricant
push rod
bore
rocker arm
spring
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
EP93102908A
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German (de)
French (fr)
Other versions
EP0560126B1 (en
Inventor
Rüdiger Dipl.-Ing. Hass
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.)
Caterpillar Motoren GmbH and Co KG
Original Assignee
Krupp Mak Maschinenbau 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.)
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Publication of EP0560126A1 publication Critical patent/EP0560126A1/en
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Publication of EP0560126B1 publication Critical patent/EP0560126B1/en
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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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • 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
    • F02M59/30—Varying fuel delivery in quantity or timing with variable-length-stroke pistons
    • 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

Definitions

  • the invention relates to a device for actuating an injection pump via a pressure rod, which is arranged between the pump piston of the injection pump and the roller tappet, which is connected to a camshaft.
  • a large power transmission by means of a push rod on a pump piston is required.
  • the push rod is connected on the one hand via a spring under tension to a roller tappet which is in engagement with the camshaft and on the other hand is supported on the pump piston.
  • a roller tappet which is in engagement with the camshaft and on the other hand is supported on the pump piston.
  • the object of the invention is therefore to improve a device of the generic type and to ensure that the push rod can move freely on its bearing or support surfaces, the spring working almost without buckling during the working process.
  • the push rod is held biased by a spring on a rocker arm carrying the rocker arm and the spring is supported between a spring plate on the rocker arm and on the housing of the injection pump and the rocker arm facing a spring plate from a head the push rod mounted sleeve element and lubricant feeds are provided in bearings of the push rod on the rocker arm and on the pump piston of the injection pump.
  • the main advantages achieved by the invention are that the bearing surfaces of the push rod on the piston and on the rocker arm are constantly provided with an oil film by a lubricant supply.
  • the bearing surface of the push rod on the pump piston is convex and that on the rocker arm is concave, these hemispherical surfaces corresponding to corresponding hemispherical surfaces, so that there is a pivot bearing at each end of the push rod.
  • a pressure spring which is arranged between two spring plates, ensures that the pressure rod is in constant contact with the rocker arm or with the rocker arm bearing.
  • the spring is supported in the area of the pump on an upper spring plate held on the cylinder crankcase and in the area of the rocker arm on an spring plate designed as a sleeve element on a head of the pressure rod.
  • a longitudinally extending lubricant bore is arranged in the push rod, which is connected to a lubricant channel in the rocker arm, which is arranged coaxially with the lubricant bore in the area of the lower push rod bearing.
  • This bore enters in the area of the upper push rod bearing into a bore of the pump piston, from which radial bores branch off, which open into a circumferential, equal surface of the piston.
  • the lower spring plate is designed as a single component. This can be achieved that with a position of the tappet roller on the base circle of the camshaft there is a play between the pressure rod and the system surface on the pump piston.
  • the spring cannot hinder the supply of lubricant to the ball surfaces due to the separate spring plate.
  • This spring plate also ensures that there is hardly any kinking of the spring and that there is only a slight spring deformation even when the rocker arm bearing is adjusted via an eccentric.
  • the device To actuate an injection pump 1, the device comprises a push rod 2 with a separate guide for a spring 3. This is arranged coaxially with the push rod 2 and is supported at each end on a spring plate 4, 5. The upper one in the area of the pump 1, a spring plate 4 is held on the housing 6 and mounted in the crankcase 7. The further lower spring plate 5 is placed on a head 8 of the push rod 2 and comprises a sleeve element 9 with a turned-off edge 10 which holds the spring 3.
  • the free lower end of the push rod 2, which has the spring plate 5, is held on a rocker arm 11 in a bearing 12, a roller tappet 18, which engages with a camshaft 14, being connected to the rocker arm 11.
  • the rocker arm 11 is articulated on the crankcase 7 via an eccentric bearing 11a for adjusting the start of injection and is adjustable in this bearing according to the requirements.
  • the push rod 2 is supported in the pump piston 23 in a concave hemispherical surface 15 which corresponds to a convex hemispherical surface 16 of the push rod 2 and results in a pivotable further bearing 17.
  • the pivotable mounting 12 on the rocker arm 11 comprises a support element 18 which has a convex hemispherical surface 19 which is arranged corresponding to a concave hemispherical surface 20 of the push rod 2.
  • a longitudinally extending lubricant bore 21 which is connected to a lubricant channel 22 in the rocker arm 11.
  • a blind bore 24 which is coaxial with the lubricant bore 21 and has radially branching channels 25 which run into a guide wall 26.
  • a play y Between the hemispherical surfaces 15 and 16 of the bearing 17 there is a basic position of the push rod 2, i.e. if the roller tappet 13 runs on the base circle G of the camshaft 14, a play y. This game causes a provision of the hemispherical surfaces 15 and 16 with lubricant, so that a constant oil film between the adjacent surfaces is guaranteed.
  • the head 8 of the push rod 2 carries the separate spring plate 5 designed as a sleeve element 9 and is provided with radial bores 27 and 28 which branch off from the longitudinally extending lubricant bore 21 and which open into a sliding surface 30 between the sleeve element 9 and the head 8.
  • the lubricant bore 21 of the push rod 2 or the subsequent channels and bores each have a countersink 31, 32 at their mouth openings.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

For the actuation of injection pumps a pushrod (2) is provided between the pump (1) and a rocker lever (11), which engages with a camshaft (14). The pushrod (2) is on the one hand supported on the injection pump (1) by way of a semi spherical bearing (17) and, on the other, held on the rocker lever (11) by way of a further semi spherical bearing (12). So that a constant supply of lubricant is achieved in order to obtain a film of oil between the adjacent sliding surfaces, a lubricant duct (21) is provided in the pushrod (2), which duct is connected to a lubricant duct (22) in the rocker lever (11), thereby ensuring a constant lubricant feed to the bearings (12, 17) of the pushrod (2). So that a spring (3) arranged coaxially with the pushrod (2) does not influence the lubricant feed, this spring is supported in the area of the rocker lever (11) on a separate spring plate (5), which is arranged on the head (8) of the pushrod (2). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Betätigung einer Einspritzpumpe über eine Druckstange, die zwischen Pumpenkolben der Einspritzpumpe und Rollenstößel, der in Verbindung mit einer Nockenwelle steht, angeordnet ist.The invention relates to a device for actuating an injection pump via a pressure rod, which is arranged between the pump piston of the injection pump and the roller tappet, which is connected to a camshaft.

Bei Antrieben für Einspritzpumpen von Brennkraftmaschinen, ist eine große Kraftübertragung mittels einer Druckstange auf einem Pumpenkolben erforderlich. Die Druckstange ist hierzu einerseits über eine unter Spannung stehende Feder mit einem Rollenstößel verbunden, der mit der Nockenwelle in Eingriff steht und sich andererseits an dem Pumpenkolben abstützt. Zur einwandfreien Funktion der Druckstange, insbesondere, wenn diese sich auf einer Lagerung eines Schwinghebels abstützt, der exzentrisch gelagert ist, ist eine leichtgängige Schwenkbewegung der Druckstange auf seinen Lager- bzw. Abstützflächen am Schwinghebel sowie am Pumpenkolben erforderlich.For drives for injection pumps of internal combustion engines, a large power transmission by means of a push rod on a pump piston is required. For this purpose, the push rod is connected on the one hand via a spring under tension to a roller tappet which is in engagement with the camshaft and on the other hand is supported on the pump piston. For the push rod to function properly, especially if it is supported on a bearing of a rocker arm that is mounted eccentrically, a smooth pivoting movement of the push rod on its bearing or support surfaces on the rocker arm and on the pump piston is required.

Aufgabe der Erfindung ist es deshalb, eine Vorrichtung der gattungsgemäßen Art zu verbessern und eine Leichtgängigkeit der Druckstange auf seinen Lager- bzw. Abstützflächen zu gewährleisten, wobei die Feder während des Arbeitsprozesses nahezu beulungsfrei arbeitet.The object of the invention is therefore to improve a device of the generic type and to ensure that the push rod can move freely on its bearing or support surfaces, the spring working almost without buckling during the working process.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Druckstange über eine Feder an einem den Rollenstößel tragenden Schwinghebel vorgespannt gehalten ist und die Feder zwischen jeweils einem Federteller am Schwinghebel sowie am Gehäuse der Einspritzpumpe sich abstützt und der dem Schwinghebel zugerichtete eine Federteller aus einem auf einem Kopf der Druckstange gelagerte Hülsenelement besteht und in Lagerungen der Druckstange am Schwinghebel und am Pumpenkolben der Einspritzpumpe Schmiermittelzuführungen vorgesehen sind.This object is achieved in that the push rod is held biased by a spring on a rocker arm carrying the rocker arm and the spring is supported between a spring plate on the rocker arm and on the housing of the injection pump and the rocker arm facing a spring plate from a head the push rod mounted sleeve element and lubricant feeds are provided in bearings of the push rod on the rocker arm and on the pump piston of the injection pump.

Weitere vorteilhafte Ausgestaltungen sind durch die Unteransprüche gekennzeichnet.Further advantageous configurations are characterized by the subclaims.

Die mit der Erfindung hauptsächlich erzielten Vorteile bestehen darin, daß die Auflageflächen der Druckstange am Kolben sowie am Schwinghebel ständig durch eine Schmiermittelzuführung mit einem Ölfilm versehen sind. Die Auflagefläche der Druckstange am Pumpenkolben ist konvex und die am Schwinghebel ist konkav ausgeführt, wobei diese Halbkugelflächen mit entsprechenden Halbkugelflächen korrespondieren, so daß sich an jedem Ende der Druckstange eine Schwenklagerung ergibt.The main advantages achieved by the invention are that the bearing surfaces of the push rod on the piston and on the rocker arm are constantly provided with an oil film by a lubricant supply. The bearing surface of the push rod on the pump piston is convex and that on the rocker arm is concave, these hemispherical surfaces corresponding to corresponding hemispherical surfaces, so that there is a pivot bearing at each end of the push rod.

Über eine Druckfeder, welche zwischen zwei Federtellern angeordnet ist, wird eine ständige Anlage der Druckstange am Schwinghebel bzw. an der Lagerung des Schwinghebels erzielt.A pressure spring, which is arranged between two spring plates, ensures that the pressure rod is in constant contact with the rocker arm or with the rocker arm bearing.

Die Feder ist im Bereich der Pumpe an einem am Zylinderkurbelgehäuse gehaltenen oberen Federteller abgestützt und im Bereich des Schwinghebels an einem auf einem Kopf der Druckstange aufgesetzten als Hülsenelement ausgebildeten Federteller.The spring is supported in the area of the pump on an upper spring plate held on the cylinder crankcase and in the area of the rocker arm on an spring plate designed as a sleeve element on a head of the pressure rod.

In der Druckstange ist eine Längsachsig verlaufende Schmiermittelbohrung angeordnet, die mit einem Schmiermittelkanal im Schwinghebel verbunden ist, der im Bereich der unteren Druckstangenlagerung gleichachsig mit der Schmiermittelbohrung angeordnet ist. Diese Bohrung tritt im Bereich der oberen Druckstangenlagerung in eine Bohrung des Pumpkolbens ein, von dem Radialbohrungen abzweigen, die in eine Umfangsgleichfläche des Kolbens einmünden.A longitudinally extending lubricant bore is arranged in the push rod, which is connected to a lubricant channel in the rocker arm, which is arranged coaxially with the lubricant bore in the area of the lower push rod bearing. This bore enters in the area of the upper push rod bearing into a bore of the pump piston, from which radial bores branch off, which open into a circumferential, equal surface of the piston.

Im Kopf der Druckstange sind von der Schmiermittelbohrung radial abzweigende weitere Bohrungen vorgesehen, die in die Umfangsfläche des als separaten Federteller ausgebildeten Hülsenelements einmünden.In the head of the push rod, further bores are provided which branch off radially from the lubricant bore and which open into the peripheral surface of the sleeve element designed as a separate spring plate.

Große Kraftübertragungen mittels der Druckstange mit Kugeloberflächen für Antriebe von Einspritzpumpen machen zur guten Funktionsfähigkeit erforderlich, daß zwischen den Kugeloberflächen ein ständiger Ölfilm aufgebaut wird. Damit dieses in jedem Fall bei einer eingebauten Zusatzfeder gewährleistet ist, ist der untere Federteller als Einzelbauteil ausgeführt. Hierdurch kann erreicht werden, daß bei einer Stellung der Stößelrolle auf den Grundkreis der Nockenwelle sich ein Spiel zwischen Druckstange und Anlagenfläche am Pumpenkolben einstellt.Large power transmissions by means of the push rod with ball surfaces for drives of injection pumps require that a permanent oil film is built up between the ball surfaces in order to function properly. So that this is guaranteed in any case with a built-in additional spring, the lower spring plate is designed as a single component. This can be achieved that with a position of the tappet roller on the base circle of the camshaft there is a play between the pressure rod and the system surface on the pump piston.

Vorteilig ist auch, daß die Feder die Schmiermittelzufuhr an die Kugeloberflächen aufgrund des separaten Federtellers nicht behindern kann. Dieser Federteller bewirkt auch, daß kaum eine Knickung der Feder auftritt und auch bei einer Verstellung des Schwinghebellagers über einen Exzenter nur eine geringe Federverformung erfolgt.It is also advantageous that the spring cannot hinder the supply of lubricant to the ball surfaces due to the separate spring plate. This spring plate also ensures that there is hardly any kinking of the spring and that there is only a slight spring deformation even when the rocker arm bearing is adjusted via an eccentric.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt und im folgenden näher beschrieben.An embodiment of the invention is shown schematically in the drawing and described in more detail below.

Die Vorrichtung umfaßt zur Betätigung einer Einspritzpumpe 1 eine Druckstange 2 mit einer separaten Führung einer Feder 3. Diese ist koaxial zur Druckstange 2 angeordnet und stützt sich an jedem Ende an einem Federteller 4, 5 ab. Der obere im Bereich der Pumpe 1 angeordnete eine Federteller 4 ist am Gehäuse 6 gehalten und im Kurbelgehäuse 7 gelagert. Der weitere untere Federteller 5 ist auf einem Kopf 8 der Druckstange 2 aufgesetzt und umfaßt ein Hülsenelement 9 mit einem abgestellten Rand 10, der die Feder 3 hält.To actuate an injection pump 1, the device comprises a push rod 2 with a separate guide for a spring 3. This is arranged coaxially with the push rod 2 and is supported at each end on a spring plate 4, 5. The upper one in the area of the pump 1, a spring plate 4 is held on the housing 6 and mounted in the crankcase 7. The further lower spring plate 5 is placed on a head 8 of the push rod 2 and comprises a sleeve element 9 with a turned-off edge 10 which holds the spring 3.

Das den Federteller 5 aufweisende freie untere Ende der Druckstange 2 ist an einem Schwinghebel 11 in einer Lagerung 12 gehalten, wobei mit dem Schwinghebel 11 ein Rollenstößel 18 verbunden ist, der mit einer Nockenwelle 14 in Eingriff steht. Der Schwinghebel 11 ist über eine exzentrische Lagerung 11a zur Einspritzbeginnverstellung am Kurbelgehäuse 7 angelenkt und in dieser Lagerung entsprechend den Erfordernissen verstellbar.The free lower end of the push rod 2, which has the spring plate 5, is held on a rocker arm 11 in a bearing 12, a roller tappet 18, which engages with a camshaft 14, being connected to the rocker arm 11. The rocker arm 11 is articulated on the crankcase 7 via an eccentric bearing 11a for adjusting the start of injection and is adjustable in this bearing according to the requirements.

Die Druckstange 2 ist im Pumpenkolben 23 in einer konkaven Halbkugelfläche 15 abgestützt, die korrespondierend mit einer konvexen Halbkugelfläche 16 der Druckstange 2 ist und eine schwenkbewegliche weitere Lagerung 17 ergibt. Die schwenkbewegliche Lagerung 12 am Schwinghebel 11 umfaßt ein Stützelement 18, das eine konvexe Halbkugelfläche 19 aufweist, die korrespondierend mit einer konkaven Halbkugelfläche 20 der Druckstange 2 angeordnet ist.The push rod 2 is supported in the pump piston 23 in a concave hemispherical surface 15 which corresponds to a convex hemispherical surface 16 of the push rod 2 and results in a pivotable further bearing 17. The pivotable mounting 12 on the rocker arm 11 comprises a support element 18 which has a convex hemispherical surface 19 which is arranged corresponding to a concave hemispherical surface 20 of the push rod 2.

In der Druckstange 2 ist zur Zuführung von Schmiermittel S und S1 in die Lagerungen 12 und 17 eine längsachsig verlaufende Schmiermittelbohrung 21 vorgesehen, die mit einem Schmiermittelkanal 22 im Schwinghebel 11 verbunden ist.Provided in the push rod 2 for supplying lubricant S and S1 into the bearings 12 and 17 is a longitudinally extending lubricant bore 21 which is connected to a lubricant channel 22 in the rocker arm 11.

Im Pumpenkolben 23 der Einspritzpumpe 1 ist eine gleichachsig zur Schmiermittelbohrung 21 verlaufende Sackbohrung 24 eingebracht, die radial abzweigende Kanäle 25 aufweist, welche in eine Führungswand 26 auslaufen. Zwischen den Halbkugelflächen 15 und 16 der Lagerung 17 besteht in einer Grundstellung der Druckstange 2, d.h. wenn der Rollenstößel 13 auf dem Grundkreis G der Nockenwelle 14 läuft, ein Spiel y. Dieses Spiel bewirkt eine Vorsorgung der Halbkugelflächen 15 und 16 mit Schmiermittel, so daß ein ständiger Ölfilm zwischen den anliegenden Flächen gewährleistet ist.In the pump piston 23 of the injection pump 1 there is a blind bore 24 which is coaxial with the lubricant bore 21 and has radially branching channels 25 which run into a guide wall 26. Between the hemispherical surfaces 15 and 16 of the bearing 17 there is a basic position of the push rod 2, i.e. if the roller tappet 13 runs on the base circle G of the camshaft 14, a play y. This game causes a provision of the hemispherical surfaces 15 and 16 with lubricant, so that a constant oil film between the adjacent surfaces is guaranteed.

Der Kopf 8 der Druckstange 2 trägt den als Hülsenelement 9 ausgebildeten separaten Federteller 5 und ist mit von der längsachsig verlaufenden Schmiermittelbohrung 21 abzweigenden radialen Bohrungen 27 und 28 versehen, die in eine Gleitfläche 30 zwischen dem Hülsenelement 9 und den Kopf 8 ausmünden.The head 8 of the push rod 2 carries the separate spring plate 5 designed as a sleeve element 9 and is provided with radial bores 27 and 28 which branch off from the longitudinally extending lubricant bore 21 and which open into a sliding surface 30 between the sleeve element 9 and the head 8.

Somit ist auch bei dieser Lagerung 12 gewährleistet, daß die Halbkugelflächen 19 und 20 mit Schmiermittel versorgt sind und eine leichtgängige Schwenkbeweglichkeit durch einen Ölfilm zwischen den Flächen gewährleistet ist. Die Schmiermittelbohrung 21 der Druckstange 2 bzw. die anschließenden Kanäle und Bohrungen weisen an ihren Mündungsöffnungen jeweils eine Ansenkung 31, 32 auf.This also ensures in this bearing 12 that the hemispherical surfaces 19 and 20 are supplied with lubricant and an easy pivoting mobility is ensured by an oil film between the surfaces. The lubricant bore 21 of the push rod 2 or the subsequent channels and bores each have a countersink 31, 32 at their mouth openings.

Claims (8)

Vorrichtung zur Betätigung einer Einspritzpumpe über eine Druckstange, die zwischen Pumpenkolben der Einspritzpumpe und Rollenstößel, der in Verbindung mit einer Nockenwelle steht, angeordnet ist, dadurch gekennzeichnet, daß die Druckstange (2) über eine Feder (3) an einem den Rollenstößel (13) tragenden Schwinghebel (11) vorgespannt gehalten ist und die Feder (3) zwischen jeweils einem Federteller (4, 5) am Schwinghebel (11) sowie am Gehäuse (6) der Einspritzpumpe (1) sich abstützt und der dem Schwinghebel (11) zugerichtete eine Federteller (5) aus einem auf einem Kopf (8) der Druckstange (2) gelagerte Hülsenelement (9) besteht und in Lagerungen (12, 17) der Druckstange (2) am Schwinghebel (11) und am Pumpenkolben (23) der Einspritzpumpe (1) Schmiermittelzuführungen (S und S1) vorgesehen sind.Device for actuating an injection pump via a pressure rod, which is arranged between the pump piston of the injection pump and the roller tappet, which is connected to a camshaft, characterized in that the pressure rod (2) is connected to the roller tappet (13) via a spring (3). carrying rocker arm (11) is held biased and the spring (3) between each spring plate (4, 5) on the rocker arm (11) and on the housing (6) of the injection pump (1) is supported and one of the rocker arm (11) Spring plate (5) consists of a sleeve element (9) mounted on a head (8) of the push rod (2) and in bearings (12, 17) of the push rod (2) on the rocker arm (11) and on the pump piston (23) of the injection pump ( 1) Lubricant feeds (S and S1) are provided. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Druckstange (2) zur Schmiermittelzuführung (S und S1) eine längsachsig verlaufende Schmiermittelbohrung (21) aufweist, die mit einem Schmiermittelkanal (22) im Schwinghebel (11) verbunden ist und die Schmiermittelbohrung (21) den Kanal (22) bei einer Lage des Rollenstößels (13) auf dem Grundkreis (G) der Nockenwelle (14) direkt in der Weise gegenübersteht, daß die Mündungsöffnungen sich überdecken.Apparatus according to claim 1, characterized in that the push rod (2) for the lubricant supply (S and S1) has a longitudinally extending lubricant bore (21) which is connected to a lubricant channel (22) in the rocker arm (11) and the lubricant bore (21) the channel (22) with a position of the roller tappet (13) on the base circle (G) of the camshaft (14) faces directly in such a way that the orifices overlap. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Druckstange (2) in einer konkav ausgeführten Halbkugelfläche (15) des Lagers (17) im Pumpenkolben (23) mit einer korrespondierenden konvexen Halbkugelfläche (16) gleitend verschiebbar gelagert ist.Apparatus according to claim 1 or 2, characterized in that the push rod (2) is slidably mounted in a concave hemispherical surface (15) of the bearing (17) in the pump piston (23) with a corresponding convex hemispherical surface (16). Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Druckstange (2) in einer weiteren Lagerung (12) auf einer konvexen Halbkugelfläche (19) eines Stützelements (18) am Schwinghebel (11) mit einer hierzu korrespondierenden konkaven Halbkugelfläche (20) gleitend verschwenkbar gelagert ist.Device according to claim 1 or 2, characterized in that the push rod (2) slides in a further bearing (12) on a convex hemisphere (19) of a support element (18) on the rocker arm (11) with a corresponding concave hemisphere (20) is pivotally mounted. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schmiermittelbohrung (21) in einer anschließende Sackbohrung (24) des Einspritzkolbens (23) einmündet und diese Bohrung (24) radial abzweigende Kanäle (25) umfaßt, die in einer Führungswand (26) auslaufen.Device according to one of claims 1 to 4, characterized in that the lubricant bore (21) opens into a subsequent blind bore (24) of the injection piston (23) and this bore (24) comprises radially branching channels (25) which are in a guide wall ( 26) leak. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zwischen den Halbkugelflächen (16 und 15) der Druckstange (2) und des Pumpenkolbens (23) bei einer Lage des Rollenstößels (13) auf dem Grundkreis (G) der Nockenwelle (14) ein Spiel (y) im Bereich der Mündungsöffnungen der Schmiermittelbohrung (21) und der Bohrung (24) im Pumpenkolben (23) vorgesehen ist.Device according to one of claims 1 to 5, characterized in that between the hemispherical surfaces (16 and 15) of the push rod (2) and the pump piston (23) when the roller tappet (13) is on the base circle (G) of the camshaft (14 ) a play (y) is provided in the area of the mouth openings of the lubricant bore (21) and the bore (24) in the pump piston (23). Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das den unteren Federteller 85) bildende Hülsenelement (9) als separates Bauteil auf dem Kopf (8) der Druckstange (2) gelagert ist und zwischen der Hülse (9) und dem Kopf (8) radial von der längsachsig verlaufenden Schmiermittelbohrung (21) abzweigende Bohrungen (27 und 28) vorgesehen sind, die in eine Gleitfläche (13) zwischen dem Hülsenelement (9) und dem Kopf (8) ausmünden.Device according to one of claims 1 to 6, characterized in that the sleeve element (9) forming the lower spring plate 85) is mounted as a separate component on the head (8) of the push rod (2) and between the sleeve (9) and the head (8) bores (27 and 28) branching radially from the longitudinally extending lubricant bore (21) are provided, which open into a sliding surface (13) between the sleeve element (9) and the head (8). Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Schmiermittelbohrung (21) an ihrem Mündungsöffnungen in die Halbkugelflächen (16 und 20) eine Ansenkung (31, 32) aufweist.Device according to one of claims 1 to 7, characterized in that the lubricant bore (21) has a countersink (31, 32) at its opening in the hemispherical surfaces (16 and 20).
EP93102908A 1992-03-13 1993-02-25 Device for actuating an injection pump Expired - Lifetime EP0560126B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4207980 1992-03-13
DE4207980A DE4207980A1 (en) 1992-03-13 1992-03-13 DEVICE FOR ACTUATING AN INJECTION PUMP

Publications (2)

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EP0560126A1 true EP0560126A1 (en) 1993-09-15
EP0560126B1 EP0560126B1 (en) 1996-05-08

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EP93102908A Expired - Lifetime EP0560126B1 (en) 1992-03-13 1993-02-25 Device for actuating an injection pump

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EP (1) EP0560126B1 (en)
DE (2) DE4207980A1 (en)
FI (1) FI104012B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644328A1 (en) * 1993-09-17 1995-03-22 Lucas Industries Public Limited Company Fuel pumping apparatus
DE4409555A1 (en) * 1994-03-19 1995-09-21 Mak Maschinenbau Krupp Pressure producing device for pressure oil barrier in fuel injection pump
WO2005111405A1 (en) * 2004-05-13 2005-11-24 Robert Bosch Gmbh High-pressure pump for a fuel injection device pertaining to an internal combustion engine
US7243301B2 (en) 2002-04-10 2007-07-10 Microsoft Corporation Common annotation framework
US7747943B2 (en) 2001-09-07 2010-06-29 Microsoft Corporation Robust anchoring of annotations to content
EP2677142A1 (en) 2012-06-22 2013-12-25 Caterpillar Motoren GmbH & Co. KG Method and device for controlling the operation of dual-fuel engine
EP2752561A1 (en) 2013-01-07 2014-07-09 Caterpillar Motoren GmbH & Co. KG Method and device for controlling the operation of an internal combustion engine
EP2752571A1 (en) 2013-01-07 2014-07-09 Caterpillar Motoren GmbH & Co. KG Method and device for controlling the operation of a dual fuel engine

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
DE19702268A1 (en) * 1997-01-23 1998-07-30 Deutz Ag Injection path formation for vehicle injection system
DE102019117910A1 (en) * 2019-07-03 2021-01-07 Schaeffler Technologies AG & Co. KG Roller tappet for a high pressure fuel pump

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US3034488A (en) * 1960-10-31 1962-05-15 Cummins Engine Co Inc Push rod structure for an internal combustion engine
US3859973A (en) * 1971-12-27 1975-01-14 Allis Chalmers Timing device for fuel injector
FR2544386A1 (en) * 1983-04-13 1984-10-19 Maschf Augsburg Nuernberg Ag IC engine injection pump drive
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US1989891A (en) * 1926-08-09 1935-02-05 Allis Chalmers Mfg Co Fuel injection device
FR1248791A (en) * 1959-03-19 1960-12-23 Daimler Benz Ag Device for adjusting the injection instant on internal combustion engines
US3034488A (en) * 1960-10-31 1962-05-15 Cummins Engine Co Inc Push rod structure for an internal combustion engine
US3859973A (en) * 1971-12-27 1975-01-14 Allis Chalmers Timing device for fuel injector
FR2544386A1 (en) * 1983-04-13 1984-10-19 Maschf Augsburg Nuernberg Ag IC engine injection pump drive
DE3740956A1 (en) * 1986-12-10 1988-06-23 Steyr Daimler Puch Ag INJECTION PUMP FOR DIESEL ENGINES

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644328A1 (en) * 1993-09-17 1995-03-22 Lucas Industries Public Limited Company Fuel pumping apparatus
US5462028A (en) * 1993-09-17 1995-10-31 Lucas Industries Public Limited Company Fuel pumping apparatus
DE4409555A1 (en) * 1994-03-19 1995-09-21 Mak Maschinenbau Krupp Pressure producing device for pressure oil barrier in fuel injection pump
DE4409555C2 (en) * 1994-03-19 2003-04-17 Caterpillar Motoren Gmbh & Co Device for generating pressure for a pressure oil lock of an injection pump
US7747943B2 (en) 2001-09-07 2010-06-29 Microsoft Corporation Robust anchoring of annotations to content
US7243301B2 (en) 2002-04-10 2007-07-10 Microsoft Corporation Common annotation framework
WO2005111405A1 (en) * 2004-05-13 2005-11-24 Robert Bosch Gmbh High-pressure pump for a fuel injection device pertaining to an internal combustion engine
US7513190B2 (en) 2004-05-13 2009-04-07 Robert Bosch Gmbh High-pressure pump for a fuel injection system of an internal combustion engine
EP2677142A1 (en) 2012-06-22 2013-12-25 Caterpillar Motoren GmbH & Co. KG Method and device for controlling the operation of dual-fuel engine
WO2013189603A1 (en) 2012-06-22 2013-12-27 Caterpillar Motoren Gmbh & Co. Kg Method and device for controlling the operation of dual-fuel engine
EP2752561A1 (en) 2013-01-07 2014-07-09 Caterpillar Motoren GmbH & Co. KG Method and device for controlling the operation of an internal combustion engine
EP2752571A1 (en) 2013-01-07 2014-07-09 Caterpillar Motoren GmbH & Co. KG Method and device for controlling the operation of a dual fuel engine

Also Published As

Publication number Publication date
FI104012B1 (en) 1999-10-29
EP0560126B1 (en) 1996-05-08
DE4207980A1 (en) 1993-09-16
DE59302482D1 (en) 1996-06-13
FI104012B (en) 1999-10-29
FI931066A0 (en) 1993-03-10
FI931066A7 (en) 1993-09-14

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