EP0027790A1 - Injection pump - Google Patents

Injection pump Download PDF

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Publication number
EP0027790A1
EP0027790A1 EP80890117A EP80890117A EP0027790A1 EP 0027790 A1 EP0027790 A1 EP 0027790A1 EP 80890117 A EP80890117 A EP 80890117A EP 80890117 A EP80890117 A EP 80890117A EP 0027790 A1 EP0027790 A1 EP 0027790A1
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EP
European Patent Office
Prior art keywords
pump
control
sleeve
pump piston
control sleeve
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Withdrawn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
EP80890117A
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German (de)
French (fr)
Inventor
Anton Dipl.-Ing. Dr. Pischinger
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.)
Friedmann and Maier AG
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Friedmann and Maier AG
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Filing date
Publication date
Application filed by Friedmann and Maier AG filed Critical Friedmann and Maier AG
Publication of EP0027790A1 publication Critical patent/EP0027790A1/en
Withdrawn legal-status Critical Current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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • 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
    • F02M59/361—Valves being actuated mechanically

Definitions

  • the injection quantity is usually regulated in such a way that the piston is rotated relative to the fixed piston sleeve, the piston having oblique slots and the effective delivery stroke of the pump being changed by the rotation.
  • Designs of pumps are also known in which the delivery rate is changed by raising or lowering a ring lying on the piston, as a result of which the start or end of delivery is postponed.
  • Injection pumps with two rings are also known, in which both the start of delivery and the end of delivery are each changed with an axially displaceable ring and thus the injection quantity and the start of delivery.
  • the known designs are relatively complicated and expensive.
  • a pump-nozzle unit has already become known in which the nozzle needle is controlled by the piston of the injection pump and a rotatable regulating sleeve is provided for regulating the delivery rate.
  • a separate adjustability of this sleeve from this twist is not provided, and it is therefore not possible to regulate the delivery rate of the pump independently of this and also the delivery time of the pump with this control sleeve.
  • the invention now relates to an injection pump for internal combustion engines, in particular diesel engines if of the type in which the injection pump and injection nozzle are combined to form a unit assigned to a motor cylinder, in which the pump piston is secured against rotation relative to the pump piston sleeve and is slidably guided in a control sleeve which rotates relative to the pump piston sleeve and which cooperates with at least one control recess of the pump piston , and aims to create a simple construction that enables simultaneous and independent adjustment of the delivery rate and start of spraying.
  • the invention essentially consists in that the control sleeve is displaceable by the pump piston axis rotatably and in the direction of the pump piston bush axis and at least one control recess of the pump piston for altering För - dermenge and cooperating conveying timing of the pump.
  • a single component, namely the control sleeve is required to regulate the delivery quantity and the delivery time of the pump, and the effort required for the control is reduced.
  • control sleeve is expediently arranged between two guides of the pump piston in the pump piston sleeve, which limit the suction space in the injection pump housing.
  • the piston is guided precisely in the area of the control sleeve and the connection between the pump work space and the suction space of the pump is directly controlled by the control sleeve.
  • control recess of the pump piston is the same from a transverse bore perpendicular to the axis formed, which is in connection with the pump work space and interacts with control edges of the control sleeve.
  • a control recess formed by a transverse bore is simple to produce and this transverse bore can be connected to the working chamber of the same in a simple manner by an axial bore in the pump piston.
  • the control sleeve has inclined control edges on at least one end face, so that by turning the control sleeve, the point in time at which the connection between the pump work space and the suction space is established can be changed, as in a similar manner in the known injection pumps is the case in which the piston has an oblique slot.
  • the arrangement is preferably such that the oblique control edges of the control sleeve are arranged axially symmetrically on both sides of the pump piston and the transverse bore of the pump piston is continuous. This axially symmetrical design ensures that the sleeve is completely free of force under the injection pressure and the manufacture of the sleeve is also simplified.
  • the rotation and the displacement of the control sleeve are carried out by a single rotatable and displaceable element, whereby the drive of the control sleeve is simplified.
  • the rotatable and displaceable element expediently engages with a ball pin in a recess in the control sleeve.
  • F ig. 1 shows a longitudinal section through the injection pump combined with the injection nozzle to form a structural unit.
  • FIG. 2 shows a section along line II-11 of FIG. 1.
  • FIG. 3 shows a section along line III-III of FIG. 1.
  • the pump piston sleeve 2 has a transverse channel 7, A control sleeve 8 is slidably arranged on the pump piston 3 in the area of this transverse channel 7.
  • the transverse channel 7 forms the suction chamber 20 of the pump and is filled with fuel of low pressure Transverse bore 9 and an axial bore 10 in the pump piston 3, the suction chamber 20 formed by the transverse bore 7 is connected to the working chamber 4 of the pump
  • the pump piston 3 has a crosshead 13 which is guided in a slot 14 in the pump piston bushing 2 , so that the pump piston 3 is secured against rotation.
  • control rod 15 is a control rod which is both longitudinally displaceable and rotatable about its axis.
  • This control rod 15 has a ball pin 16 which engages in a cylindrical bore 17 of the control sleeve 8.
  • the control bushing 8 By longitudinally displacing the control rod 15, the control bushing 8 can now be rotated about the axis of the piston 3, and by rotating the control rod 15, the control bushing 8 can be displaced relative to the pump piston bushing 2 in the direction of the axis of the pump piston 3.
  • the control bushing 8 has oblique control edges 19 on its lower end face 18, which are arranged axially symmetrically. These control edges 19 cooperate with the transverse bore 9.

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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)

Abstract

The pump has a control sleeve (8) which is arranged rotatably about the axis of the pump plunger (3) and in slidably displaceable fashion in the direction of the axis of the pump plunger (3). The control sleeve (8) is arranged in a transverse channel (7) of the pump-plunger sleeve (2), which forms the inlet chamber (20) of the pump. The pump plunger (3) itself has a radially opening transverse bore (9) and an axial bore (10). By adjusting the control sleeve (8), the transverse bore (9) is correspondingly closed or freed and, by appropriate adjustment of the control sleeve (8), it is possible to adjust both the delivery quantity of the pump and the injection instant. <IMAGE>

Description

Bei den bekannten Einspritzpumpen wird üblicherweise die Einspritzmenge so reguliert,.daß der Kolben gegenüber der feststehenden Kolbenbüchse verdreht wird, wobei der Kolben Schrägschlitze trägt und durch die Verdrehung der effektive Förderhub der Pumpe verändert wird. Es sind auch Ausführungen von Pumpen bekannt, bei welchen die Fördermenge dadurch verändert wird, daß ein auf dem Kolben liegender Ring gehoben oder gesenkt wird, wodurch der Förderbeginn oder das Förderende zeitlich verschoben wird. Auch Einspritzpumpen mit zwei Ringen sind bekannt, bei welchen sowohl der Förderbeginn als auch das Förderende mit je einem axial verschiebbaren Ring und damit die Einspritzmenge und der Förderbeginn verändert wird. Die bekannten Ausbildungen sind verhältnismäßig kompliziert und kostspielig.In the known injection pumps, the injection quantity is usually regulated in such a way that the piston is rotated relative to the fixed piston sleeve, the piston having oblique slots and the effective delivery stroke of the pump being changed by the rotation. Designs of pumps are also known in which the delivery rate is changed by raising or lowering a ring lying on the piston, as a result of which the start or end of delivery is postponed. Injection pumps with two rings are also known, in which both the start of delivery and the end of delivery are each changed with an axially displaceable ring and thus the injection quantity and the start of delivery. The known designs are relatively complicated and expensive.

Es ist bereits eine Pumpe-Düse-Einheit bekannt geworden, bei welcher die Düsennadel durch den Kolben der Einspritzpumpe gesteuert wird und zur Regelung der Fördermenge eine verdrehbare Regelhülse vorgesehen ist. Eine von dieser Verdrehung gesonderte Verstellbarkeit dieser Hülse ist nicht vorgesehen und es kann daher mit dieser Regelhülse nicht neben der Fördermenge und von dieser unabhängig auch der Förderzeitpunkt der Pumpe geregelt werden.A pump-nozzle unit has already become known in which the nozzle needle is controlled by the piston of the injection pump and a rotatable regulating sleeve is provided for regulating the delivery rate. A separate adjustability of this sleeve from this twist is not provided, and it is therefore not possible to regulate the delivery rate of the pump independently of this and also the delivery time of the pump with this control sleeve.

Die Erfindung bezieht sich nun auf eine Einspritzpumpe für Brennkraftmaschinen, insbesondere Dieselmotoren, gegebenenfalls von derjenigen Bauart, bei welcher Einspritzpumpe und Einspritzdüse zu einer je einem Motorzylinder zugeordneten Baueinheit zusammengefaßt sind, bei welcher der Pumpenkolben relativ zur Pumpenkolbenbüchse gegen Verdrehung gesichert und in einer relativ zur Pumpenkolbenbüchse drehbaren Steuerbüchse gleitend geführt ist, welche mit wenigstens einer Steuerausnehmung des Pumpenkolbens zusammenwirkt, und zielt darauf ab, eine einfache Konstruktion zu schaffen, welche die gleichzeitige und unabhängige Verstellung von Fördermenge und Spritzbeginn ermöglicht. Die Erfindung besteht im wesentlichen darin, daß die Steuerbüchse um die Pumpenkolbenachse verdrehbar und in Richtung der Pumpenkolbenbüchsenachse verschiebbar ist und mit wenigstens einer Steuerausnehmung des Pumpenkolbens zur Veränderung von För- dermenge und Förderzeitpunkt der Pumpe zusammenwirkt. Da-durch, daß die Steuerbüchse sowohl verdrehbar, als auch verschiebbar ist, kann eine dieser beiden Verstellbewegungen, zweckmäßig die Verdrehbewegung, die Einspritzmenge und die andere dieser Verstellbewegungen, zweckmäßig die Verschiebebewegung, den Einspritzzeitpunkt regeln. Auf diese Weise wird gleichzeitig die Konstruktion wesentlich vereinfacht. Es ist ein einziger Bauteil, nämlich die Steuerbüchse, zur Regelung der Fördermenge und des Förderzeitpunktes der Pumpe erforderlich und der für die Steuerung erforderliche Kraftaufwand wird verringert. Gemäß der Erfindung ist hiebei zweckmäßig die Steuerbüchse zwischen zwei Führungen des Pumpenkolbens in der Pumpenkolbenbüchse angeordnet, welche den Saugraum im Einspritzpumpengehäuse begrenzen. Auf diese Weise ist der Kolben im Bereich der Steuerbüchse präzise geführt und es wird durch die Steuerbüchse die Verbindung des Pumpenarbeitsraumes mit dem Ansaugraum der Pumpe unmittelbar gesteuert.The invention now relates to an injection pump for internal combustion engines, in particular diesel engines if of the type in which the injection pump and injection nozzle are combined to form a unit assigned to a motor cylinder, in which the pump piston is secured against rotation relative to the pump piston sleeve and is slidably guided in a control sleeve which rotates relative to the pump piston sleeve and which cooperates with at least one control recess of the pump piston , and aims to create a simple construction that enables simultaneous and independent adjustment of the delivery rate and start of spraying. The invention essentially consists in that the control sleeve is displaceable by the pump piston axis rotatably and in the direction of the pump piston bush axis and at least one control recess of the pump piston for altering För - dermenge and cooperating conveying timing of the pump. D a-by that the control sleeve, is both rotatable and slidable, a adjusting movements of these two, expediently the rotary movement, the injection quantity and the other of said adjusting movements, suitably sliding movement, control the injection timing. In this way, the construction is significantly simplified. A single component, namely the control sleeve, is required to regulate the delivery quantity and the delivery time of the pump, and the effort required for the control is reduced. According to the invention, the control sleeve is expediently arranged between two guides of the pump piston in the pump piston sleeve, which limit the suction space in the injection pump housing. In this way, the piston is guided precisely in the area of the control sleeve and the connection between the pump work space and the suction space of the pump is directly controlled by the control sleeve.

Gemäß der Erfindung ist die Steuerausnehmung des Pumpenkolbens von einer senkrecht zur Achse stehenden Querbohrung desselben gebildet, welche mit dem Pumpenarbeitsraum in Verbindung steht und mit Steuerkanten der.Steuerbüchse zusammenwirkt. Eine solche von einer Querbohrung gebildete Steuerausnehmung ist einfach herstellbar und diese Querbohrung kann in einfacher Weise durch eine axiale Bohrung im Pumpenkolben mit dem Arbeitsraum desselben verbunden sein. Vorzugsweise weist hiebei gemäß der Erfindung die Steuerbüchse an wenigstens einer Stirnseite schräge Steuerkanten auf, so daß durch Verdrehung der Steuerbüchse der Zeitpunkt, zu welchem die Verbindung des Pumpenarbeitsraumes mit dem Saugraum hergestellt wird, verändert werden kann, wie dies in ähnlicher Weise bei den bekannten Einspritzpumpen der Fall ist, bei welchen der Kolben einen Schrägschlitz aufweist. Vorzugsweise ist die Anordnung so getroffen, daß die schrägen Steuerkanten der Steuerbüchse zu beiden Seiten des Pumpenkolbens achssymmetrisch angeordnet sind und die Querbohrung des Pumpenkolbens durchgehend ist. Durch diese achssymmetrische Ausbildung wird eine völlige Kraftfreiheit der Hülse unter dem Einspritzdruck erreicht und es wird auch die Herstellung der Büchse vereinfacht.According to the invention, the control recess of the pump piston is the same from a transverse bore perpendicular to the axis formed, which is in connection with the pump work space and interacts with control edges of the control sleeve. Such a control recess formed by a transverse bore is simple to produce and this transverse bore can be connected to the working chamber of the same in a simple manner by an axial bore in the pump piston. Preferably, according to the invention, the control sleeve has inclined control edges on at least one end face, so that by turning the control sleeve, the point in time at which the connection between the pump work space and the suction space is established can be changed, as in a similar manner in the known injection pumps is the case in which the piston has an oblique slot. The arrangement is preferably such that the oblique control edges of the control sleeve are arranged axially symmetrically on both sides of the pump piston and the transverse bore of the pump piston is continuous. This axially symmetrical design ensures that the sleeve is completely free of force under the injection pressure and the manufacture of the sleeve is also simplified.

Gemäß einer bevorzugten Ausführungsform der Erfindung erfolgt die Verdrehung und die Verschiebung der Steuerbüchse durch ein einziges verdreh- und verschiebbares Element, wodurch der Antrieb der Steuerbüchse vereinfacht wird. Zweckmäßig greift hiebei das verdreh- und verschiebbare Element mit einem Kugelzapfen in eine Ausnehmung der Steuerbüchse ein.According to a preferred embodiment of the invention, the rotation and the displacement of the control sleeve are carried out by a single rotatable and displaceable element, whereby the drive of the control sleeve is simplified. The rotatable and displaceable element expediently engages with a ball pin in a recess in the control sleeve.

In der Zeichnung ist die Erfindung an Hand eines Ausführungsbeispieles schematisch veranschaulicht.In the drawing, the invention is illustrated schematically using an exemplary embodiment.

Fig. 1 zeigt einen Längsschnitt durch die mit der Einspritzdüse zu einer Baueinheit vereinigte Einspritzpumpe. Fig. 2 zeigt einen Schnitt nach Linie II - 11 der Fig. 1. Fig. 3 zeigt einen Schnitt nach Linie III - III der Fig. 1. F ig. 1 shows a longitudinal section through the injection pump combined with the injection nozzle to form a structural unit. FIG. 2 shows a section along line II-11 of FIG. 1. FIG. 3 shows a section along line III-III of FIG. 1.

1 ist das Gehäuse der Einspritzpumpe, in welches die Pumpenkolbenbüchse 2 eingesetzt ist"-3 ist der Pumpenkolben. 4 ist der Arbeitsraum des Pumpenkolbens in der Pumpenkolbenbüchse 2. 5 ist das Druckventil und 6 die Einspritzdüse. Die Pumpenkolbenbüchse 2 weist einen Querkanal 7 auf, der vorzugsweise als Bohrung ausgebildet ist. Im Bereich dieses Querkanales 7 ist am Pumpenkolben 3 eine Steuerbüchse 8 gleitbar angeordnet. Der Querkanal 7 bildet den Saugraum 20 der Pumpe und ist mit Brennstoff niedrigen Druckes gefüllt. Der Pumpenkolben 3 weist eine Querbohrung 9 auf. über diese Querbohrung 9 und eine axiale Bohrung 10 im Pumpenkolben 3 ist der von der Querbohrung 7 gebildete Saugraum 20 mit dem Arbeitsraum 4 der Pumpe verbunden. Der Kolben 3 wird über einen Federteller 11 entgegen der Kraft der Rückholfeder 12 über einen nicht dargestellten Stößel oder eine Stelze angetrieben. Der Pumpenkolben 3 weist ein Querhaupt 13 auf, welches in einem Schlitz 14 der Pumpenkolbenbüchse 2 geführt ist, so daß der Pumpenkolben 3 gegen Verdrehung gesichert ist.1 is the housing of the injection pump into which the pump piston sleeve 2 is inserted "-3 is the pump piston. 4 is the working space of the pump piston in the pump piston sleeve 2. 5 is the pressure valve and 6 is the injection nozzle. The pump piston sleeve 2 has a transverse channel 7, A control sleeve 8 is slidably arranged on the pump piston 3 in the area of this transverse channel 7. The transverse channel 7 forms the suction chamber 20 of the pump and is filled with fuel of low pressure Transverse bore 9 and an axial bore 10 in the pump piston 3, the suction chamber 20 formed by the transverse bore 7 is connected to the working chamber 4 of the pump The pump piston 3 has a crosshead 13 which is guided in a slot 14 in the pump piston bushing 2 , so that the pump piston 3 is secured against rotation.

15 ist eine Regelstange, welche sowohl längsverschiebbar als auch um ihre Achse verdrehbar ist. Diese Regelstange 15 weist einen Kugelzapfen 16 auf, welcher in eine zylindrische Bohrung 17 der Steuerbüchse 8 eingreift. Durch Längsverschiebung der Regelstange 15 kann nun die Steuerbüchse 8 um die Achse des Kolbens 3 verdreht werden und durch Verdrehung der Regelstange 15 kann die Steuerbüchse 8 relativ zur Pumpenkolbenbüchse 2 in Richtung der Achse des Pumpenkolbens 3 verschoben werden. Die Steuerbüchse 8 weist an ihrer unteren Stirnseite 18 schräge Steuerkanten 19 auf, welche achssymmetrisch angeordnet sind. Diese Steuerkanten 19 wirken mit der Querbohrung 9 zusammen. Sobald die Querbohrung 9 diese Steuerkanten 19 überschleift, wird die Verbindung des Pumpenarbeitsraumes 4.mit dem Saugraum 20 freigegeben und der Förderhub ist beendet. Durch Verdrehung der Steuerbüchse 8 wird somit die Einspritzmenge geregelt. Sobald die Querboh- rung 9 eine an der oberen Stirnfläche 21 der Steuerbüchse 8 angeordnete Steuerkante 22 überschleift, beginnt der Druckhub des Pumpenkolbens und damit die Einspritzung. Durch Axialverschiebung der Steuerbüchse 8 wird somit der Spritzbeginn verändert.15 is a control rod which is both longitudinally displaceable and rotatable about its axis. This control rod 15 has a ball pin 16 which engages in a cylindrical bore 17 of the control sleeve 8. By longitudinally displacing the control rod 15, the control bushing 8 can now be rotated about the axis of the piston 3, and by rotating the control rod 15, the control bushing 8 can be displaced relative to the pump piston bushing 2 in the direction of the axis of the pump piston 3. The control bushing 8 has oblique control edges 19 on its lower end face 18, which are arranged axially symmetrically. These control edges 19 cooperate with the transverse bore 9. As soon as the transverse bore 9 grinds over these control edges 19, the connection between the pump work chamber 4 and the suction chamber 20 is released and the delivery stroke is ended. The injection quantity is thus regulated by rotating the control sleeve 8. Once the Querboh - tion 9 a on the upper end face 21 of the control sleeve 8 arranged control edge 22, the pressure stroke of the pump piston begins and thus the injection. The start of spraying is thus changed by axially displacing the control sleeve 8.

Claims (7)

1. Einspritzpumpe für Brennkraftmaschinen, insbesondere Dieselmotoren, gegebenenfalls von derjenigen Bauart, bei welcher Einspritzpumpe und Einspritzdüse zu einer je einem Motorzylinder zugeordneten Baueinheit zusammengefaßt sind, bei welcher der Pumpenkolben relativ zur Pumpenkolbenbüchse gegen Verdrehung gesichert und in einer relativ zur Pumpenkolbenbüchse drehbaren Steuerbüchse gleitend geführt ist, welche mit wenigstens einer Steuerausnehmung des Pumpenkolbens zusammenwirkt,
dadurch gekennzeichnet,
daß die Steuerbüchse (8) um die Pumpenkolbenachse verdrehbar und in Richtung der Pumpenkolbenbüchsenachse verschiebbar ist und mit wenigstens einer Steuerausnehmung des Pumpenkolbens zur Veränderung von Fördermenge und Förderzeitpunkt der Pumpe zusammenwirkt.1. Injection pump for internal combustion engines, in particular diesel engines, optionally of the type in which the injection pump and the injector are combined to form a unit assigned to a motor cylinder, in which the pump piston is secured against rotation relative to the pump piston sleeve and is slidably guided in a control sleeve which is rotatable relative to the pump piston sleeve which interacts with at least one control recess of the pump piston,
characterized,
that the control sleeve (8) is rotatable about the pump piston axis and displaceable in the direction of the pump piston sleeve axis and interacts with at least one control recess of the pump piston for changing the delivery rate and delivery time of the pump. 2. Einspritzpumpe nach Anspruch 1,
dadurch gekennzeichnet,
daß die Steuerbüchse (8) zwischen zwei Führungen des Pumpenkolbens (3) in der Pumpenkolbenbüchse (2) angeordnet ist, welche den Saugraum (20) im Einspritzpumpengehäuse (1) begrenzen.2. Injection pump according to claim 1,
characterized,
that the control sleeve (8) is arranged between two guides of the pump piston (3) in the pump piston sleeve (2), which limit the suction chamber (20) in the injection pump housing (1). 3. Einspritzpumpe nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Steuerausnehmung des Pumpenkolbens (3) von einer senkrecht zur Achse stehenden Querbohrung (9) desselben gebildet ist, welche mit dem Pumpenarbeitsraum (4) in Verbindung steht und mit Steuerkanten (19, 22) der Steuerbüchse (8) zusammenwirkt.3. Injection pump according to claim 1 or 2,
characterized,
that the control recess of the pump piston (3) is formed by a transverse bore (9) of the same perpendicular to the axis, which is in communication with the pump working chamber (4) and cooperates with control edges (19, 22) of the control sleeve (8). 4. Einspritzpumpe nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet,
daß die Steuerbüchse an wenigstens einer Stirnseite (18) schräge Steuerkanten (19) aufweist.4. Injection pump according to one of claims 1, 2 or 3, characterized in that
that the control sleeve on at least one end face (18) has oblique control edges (19). 5. Einspritzpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,
daß die schrägen Steuerkanten (19) der Steuerbüchse (8) zu beiden Seiten des Pumpenkolbens (3) achssymmetrisch angeordnet sind und die Querbohrung (9) des Pumpenkolbens (3) durchgehend ist.5. Injection pump according to one of claims 1 to 4, characterized in
that the oblique control edges (19) of the control sleeve (8) on both sides of the pump piston (3) are arranged axially symmetrically and the transverse bore (9) of the pump piston (3) is continuous. 6. Einspritzpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet,
daß die Verdrehung und die Verschiebung der Steuerbüchse (8) durch ein einziges verdreh- und verschiebbares Element (15) erfolgt.6. Injection pump according to one of claims 1 to 5, characterized in
that the rotation and displacement of the control sleeve (8) by a single rotatable and displaceable element (15). 7. Einspritzpumpe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet,
daß das verdreh- und verschiebbare Element (15) mit einem Kugelzapfen (16) in eine Ausnehmung (17) der Steuerbüchse (8) eingreift.7. Injection pump according to one of claims 1 to 6, characterized in
that the rotatable and displaceable element (15) engages with a ball pin (16) in a recess (17) of the control sleeve (8).
EP80890117A 1979-10-15 1980-10-14 Injection pump Withdrawn EP0027790A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT671879 1979-10-15
AT6718/79 1979-10-15

Publications (1)

Publication Number Publication Date
EP0027790A1 true EP0027790A1 (en) 1981-04-29

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Application Number Title Priority Date Filing Date
EP80890117A Withdrawn EP0027790A1 (en) 1979-10-15 1980-10-14 Injection pump

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PL (1) PL227309A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0207283A2 (en) * 1985-06-22 1987-01-07 Robert Bosch Gmbh Fuel injection pump for internal-combustion engines
WO1987005664A1 (en) * 1986-03-22 1987-09-24 Robert Bosch Gmbh Fuel injection pump for internal combustion engines

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147390A (en) * 1934-04-17 1939-02-14 Provencale De Const Aeronautiq Fuel feed pump
CH261724A (en) * 1945-08-13 1949-05-31 Cav Ltd Fuel pump.
DE874530C (en) * 1946-09-13 1953-04-23 Anton Dipl-Ing Dr T Pischinger Fuel injection pump
US2746443A (en) * 1953-02-20 1956-05-22 Texas Co Fuel injection pump
DE2045556A1 (en) * 1969-11-20 1971-06-03 Automobiles Peugeot, Paris Fuel injection device for internal combustion engines
US3712763A (en) * 1970-09-18 1973-01-23 Caterpillar Tractor Co Sleeve metering collar adjusting lever
FR2304786A1 (en) * 1975-03-17 1976-10-15 Johnson Lloyd INTERNAL COMBUSTION ENGINE INJECTION PUMP
US3999529A (en) * 1975-05-19 1976-12-28 Stanadyne, Inc. Multiple plunger fuel injection pump

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147390A (en) * 1934-04-17 1939-02-14 Provencale De Const Aeronautiq Fuel feed pump
CH261724A (en) * 1945-08-13 1949-05-31 Cav Ltd Fuel pump.
DE874530C (en) * 1946-09-13 1953-04-23 Anton Dipl-Ing Dr T Pischinger Fuel injection pump
US2746443A (en) * 1953-02-20 1956-05-22 Texas Co Fuel injection pump
DE2045556A1 (en) * 1969-11-20 1971-06-03 Automobiles Peugeot, Paris Fuel injection device for internal combustion engines
US3712763A (en) * 1970-09-18 1973-01-23 Caterpillar Tractor Co Sleeve metering collar adjusting lever
FR2304786A1 (en) * 1975-03-17 1976-10-15 Johnson Lloyd INTERNAL COMBUSTION ENGINE INJECTION PUMP
US3999529A (en) * 1975-05-19 1976-12-28 Stanadyne, Inc. Multiple plunger fuel injection pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0207283A2 (en) * 1985-06-22 1987-01-07 Robert Bosch Gmbh Fuel injection pump for internal-combustion engines
EP0207283A3 (en) * 1985-06-22 1988-06-01 Robert Bosch Gmbh Fuel injection pump for internal-combustion engines
WO1987005664A1 (en) * 1986-03-22 1987-09-24 Robert Bosch Gmbh Fuel injection pump for internal combustion engines

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