EP2235353A1 - High-pressure fuel pump - Google Patents

High-pressure fuel pump

Info

Publication number
EP2235353A1
EP2235353A1 EP08864925A EP08864925A EP2235353A1 EP 2235353 A1 EP2235353 A1 EP 2235353A1 EP 08864925 A EP08864925 A EP 08864925A EP 08864925 A EP08864925 A EP 08864925A EP 2235353 A1 EP2235353 A1 EP 2235353A1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure
low
pressure fuel
fuel
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
EP08864925A
Other languages
German (de)
French (fr)
Other versions
EP2235353B1 (en
Inventor
Johann Warga
Friedrich Boecking
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 EP2235353A1 publication Critical patent/EP2235353A1/en
Application granted granted Critical
Publication of EP2235353B1 publication Critical patent/EP2235353B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02M59/04—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the invention relates to a high-pressure fuel pump for operating an internal combustion engine and consisting of a pump housing and two mounted on this pump cylinder heads, in each of which a pump piston for compression of low-pressure fuel from a low pressure inlet in each case a high pressure chamber to high pressure and to promote the fuel to each a high-pressure port of a high-pressure accumulator is guided, wherein the two pump pistons are operable via a common polygonal design of a pump camshaft.
  • such a high-pressure fuel pump which consists of a split pump housing in which three guided pump pistons are driven by a common polygon of a pump camshaft.
  • the pump pistons are in each case arranged at an angle of 120 ° to one another and, due to the movement impressed by the pump camshaft, compress fuel from a low-pressure inlet into pressure spaces arranged in each case above the pump pistons to high pressure.
  • High-pressure fuel is further promoted by high pressure lines to a high-pressure accumulator.
  • a high-pressure fuel pump is suitable at a rotational speed of the pump camshaft equal to the crankshaft of the engine for the operation of a six-cylinder internal combustion engine.
  • a disadvantage of the known prior art is that when using such a high-pressure fuel pump for an internal combustion engine with four cylinders, and thus from an economic point of view with two pump piston, another pump housing is used, in which the two pump pistons are arranged opposite to a pump camshaft.
  • another pump housing leads to an increase in the
  • this object is achieved in that the two pump cylinder heads are mounted on the pump housing such that the two pump pistons are at an angle of 120 ° to each other.
  • a metering unit for supplying the two low pressure inlets of the pump piston is arranged in a 120 ° angle to both pump pistons. An arrangement in this area is due to the available space and the good accessibility of the two low-pressure feeds of advantage.
  • the drive speed of the high pressure fuel pump with respect to the speed of the internal combustion engine is 2/3.
  • the metering unit is integrated in a low-pressure block, which is placed on the pump housing and on the attachment surface has a Ausappelun ⁇ , in which the two low-pressure inlets converge at an angle greater than 90 °.
  • a low-pressure connection is arranged in the low pressure block at 90 ° to the metering unit. It is advantageous here that the fuel supply to the metering unit is arranged very compactly on the high-pressure fuel pump.
  • the single FIGURE shows a sectional view of the high-pressure fuel pump according to the invention, cut in the plane of arrangement of the pump piston.
  • This high-pressure fuel pump consists of a pump housing 1, on which the two pump cylinder heads 2a and 2b are arranged at a 120 ° angle to each other.
  • the pump piston 3a and 3b are guided, which are in the middle of the pump housing 1 with a common polygonal training 4 a pump camshaft 5 in contact.
  • the suction valves 7a and 7b of the respective pump pistons 3a and 3b are also supplied with low-pressure fuel via low-pressure inlets 6a and 6b.
  • the suction valves 7a and 7b in turn attack the above the pump piston 3 a and 3b arranged
  • a metering unit 11 is arranged, which is supplied by means of a low-pressure connection 12 by a feed pump, not shown, with low-pressure fuel and metered this, depending on the operating point of
  • a high-pressure port 13a and 13b are arranged, which are in communication with a high-pressure accumulator, not shown.
  • a translatory movement of the pump pistons 3 a and 3 b is generated by the rotational movement of the pump camshaft and the polygonal training 4, which results in that via the low pressure inlets 6 a and 6 b and the suction valves 7 a and 7 b fuel into the pressure chambers 8 a and 8b is sucked, there compressed to high pressure and transported to the high pressure ports 13a and 13b.

Abstract

The invention relates to a high-pressure fuel pump for operating an internal combustion engine, comprising a pump housing (1) and two pump cylinder heads (2a, 2b) attached thereto, in which a pump piston (3a, 3b) for compressing fuel under low pressure is guided from a low-pressure inlet (6a, 6b) into a pressure chamber (8a, 8b) at high pressure and for delivery of the fuel to a high-pressure connection (13a, 13b) of a high-pressure storage, wherein the two pump pistons (3 a, 3b) can be operated via a common polygonal configuration (4) of a pump cam shaft (5), wherein the two pump cylinder heads (2a, 2b) are further attached on the pump housing (1) such that the two pump pistons (3 a, 3b) are positioned at an angle of 120° to each other.

Description

Titel: Hochdruckkraftstoffpumpe Title: High pressure fuel pump
Die Erfindung betrifft eine Hochdruckkraftstoffpumpe zum Betrieb einer Brennkraftmaschine und bestehend aus einem Pumpengehäuse und zwei auf diesem aufgesetzten Pumpenzylinderköpfen, in welchen jeweils ein Pumpenkolben zur Verdichtung von unter Niederdruck stehendem Kraftstoff aus jeweils einem Niederdruckzulauf in jeweils einem Hochdruckraum auf Hochdruck und zur Förderung des Kraftstoff zu jeweils einem Hochdruckanschluss eines Hochdruckspeichers geführt ist, wobei die beiden Pumpenkolben über eine gemeinsame polygone Ausbildung einer Pumpennockenwelle betreibbar sind.The invention relates to a high-pressure fuel pump for operating an internal combustion engine and consisting of a pump housing and two mounted on this pump cylinder heads, in each of which a pump piston for compression of low-pressure fuel from a low pressure inlet in each case a high pressure chamber to high pressure and to promote the fuel to each a high-pressure port of a high-pressure accumulator is guided, wherein the two pump pistons are operable via a common polygonal design of a pump camshaft.
Stand der TechnikState of the art
Aus der DE 196 35 164 Al ist bereits eine derartige Hochdruckkraftstoffpumpe bekannt, die aus einem geteilten Pumpengehäuse besteht, in welchem drei geführte Pumpenkolben durch ein gemeinsames Polygon einer Pumpennockenwelle angetrieben werden. Die Pumpenkolben sind hierbei jeweils zueinander in einem Winkel von 120° angeordnet und verdichten durch die durch die Pumpennockenwelle aufgeprägte Bewegung Kraftstoff aus einem Niederdruckzulauf in jeweils oberhalb der Pumpenkolben angeordneten Druckräumen auf Hochdruck. Dieser unterFrom DE 196 35 164 Al, such a high-pressure fuel pump is already known, which consists of a split pump housing in which three guided pump pistons are driven by a common polygon of a pump camshaft. The pump pistons are in each case arranged at an angle of 120 ° to one another and, due to the movement impressed by the pump camshaft, compress fuel from a low-pressure inlet into pressure spaces arranged in each case above the pump pistons to high pressure. This under
Hochdruck stehende Kraftstoff wird im Weiteren mittels Hochdruckleitungen zu einem Hochdruckspeicher gefördert. Eine derartige Hochdruckkraftstoffpumpe ist bei einer Drehzahl der Pumpennockenwelle gleich der Kurbelwelle des Motors für den Betrieb einer Brennkraftmaschine mit sechs Zylindern geeignet.High-pressure fuel is further promoted by high pressure lines to a high-pressure accumulator. Such a high-pressure fuel pump is suitable at a rotational speed of the pump camshaft equal to the crankshaft of the engine for the operation of a six-cylinder internal combustion engine.
Nachteilhaft am bekannten Stand der Technik ist, dass bei der Verwendung einer derartigen Hochdruckkraftstoffpumpe für eine Brennkraftmaschine mit vier Zylindern, und damit aus ökonomischer Sicht mit zwei Pumpenkolben, ein anderes Pumpengehäuse verwendet wird, bei welchem die beiden Pumpenkolben gegenüberliegend um eine Pumpennockenwelle angeordnet sind. Die Verwendung eines anderen Pumpengehäuses führt allerdings zu einer Erhöhung desA disadvantage of the known prior art is that when using such a high-pressure fuel pump for an internal combustion engine with four cylinders, and thus from an economic point of view with two pump piston, another pump housing is used, in which the two pump pistons are arranged opposite to a pump camshaft. However, the use of another pump housing leads to an increase in the
Fertigungsaufwandes, da andere Fertigungswerkzeuge benutzt werden müssen, als bei dem Pumpengehäuse der Dreizylinderhochdruckkraftstoffpumpe.Manufacturing effort, since other production tools must be used, as in the pump housing of the three-cylinder high-pressure fuel pump.
Es ist daher die Aufgabe der vorliegenden Erfindung, eine Hochdruckkraftstoffpumpe zu schaffen, bei welcher ein Pumpengehäuse für unterschiedliche Pumpenkolbenzahlen der Hochdruckkraftstoffpumpe verwendet werden kann.It is therefore the object of the present invention to provide a high pressure fuel pump create, in which a pump housing for different pump piston numbers of the high-pressure fuel pump can be used.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die beiden Pumpenzylinderköpfe derart auf dem Pumpengehäuse befestigt sind, dass die beiden Pumpenkolben in einem Winkel von 120° zueinander liegen. Dadurch ist es möglich, dass Pumpengehäuse einer Hochdruckkraftstoffpumpe mit drei Pumpenkolben zu verwenden und somit den Aufwand der Konstruktion und Herstellung eines eingeständigen Pumpengehäuses für eine Zweikolbenhochdruckkraftstoffpumpe einzusparen.According to the invention, this object is achieved in that the two pump cylinder heads are mounted on the pump housing such that the two pump pistons are at an angle of 120 ° to each other. As a result, it is possible to use the pump housing of a high-pressure fuel pump with three pump pistons and thus to save the expense of designing and manufacturing a stationary pump housing for a two-piston high-pressure fuel pump.
In Weiterbildung der Erfindung ist eine Zumesseinheit zur Versorgung der beiden Nieder druckzuläufe der Pumpenkolben in einem 120° Winkel zu beiden Pumpenkolben angeordnet. Eine Anordnung in diesem Bereich ist aufgrund des vorhandenen Bauraumes und der guten Erreichbarkeit der beiden Niederdruckzuläufe von Vorteil.In a further development of the invention, a metering unit for supplying the two low pressure inlets of the pump piston is arranged in a 120 ° angle to both pump pistons. An arrangement in this area is due to the available space and the good accessibility of the two low-pressure feeds of advantage.
In einer weiteren Ausgestaltung der Erfindung beträgt die Antriebsdrehzahl der Hochdruckkraftstoffpumpe bezüglich der Drehzahl der Brennkraftmaschine 2/3. Durch diese Maßnahme wird eine teilsynchrone Förderung der Pumpe bezüglich des Hochdruckspeichers der Brennkraftmaschine erreicht und somit deren Betrieb gewährleistet.In a further embodiment of the invention, the drive speed of the high pressure fuel pump with respect to the speed of the internal combustion engine is 2/3. By this measure, a partially synchronous promotion of the pump with respect to the high-pressure accumulator of the internal combustion engine is achieved and thus ensures their operation.
In Weiterbildung der Erfindung ist die Zumesseinheit in einen Niederdruckblock integriert, welcher auf das Pumpengehäuse aufgesetzt ist und auf der Aufsatzfläche über eine Ausnehmun^ verfügt, in welcher die beiden Niederdruckzuläufe in einem Winkel größer als 90° zusammenlaufen. Durch die Integration der Zumesseinheit ist eine kompaktere Anordnung möglich, während gleichzeitig durch die Ausnehmung und die Anordnung der beidenIn a further development of the invention, the metering unit is integrated in a low-pressure block, which is placed on the pump housing and on the attachment surface has a Ausnehmun ^, in which the two low-pressure inlets converge at an angle greater than 90 °. By integrating the metering unit a more compact arrangement is possible, while at the same time through the recess and the arrangement of the two
Niederdruckzuläufe eine sichere Versorgung der Pumpenzylinderköpfe mit Kraftstoff gewährleistet wird.Low-pressure inlets a safe supply of the pump cylinder heads is ensured with fuel.
In einer weiteren Ausgestaltung der Erfindung ist in dem Niederdruckblock ein Niederdruckanschluss im 90°Winkel zu der Zumesseinheit angeordnet. Vorteilhaft ist hierbei, dass auch die Kraftstoffzuführung zu der Zumesseinheit sehr kompakt an der Hochdruckkraftstoffpumpe angeordnet ist.In a further embodiment of the invention, a low-pressure connection is arranged in the low pressure block at 90 ° to the metering unit. It is advantageous here that the fuel supply to the metering unit is arranged very compactly on the high-pressure fuel pump.
Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführangsbeispiels der Erfindung anhand einer Figur näher dargestellt.Other, the invention improving measures will be described below together with the Description of a preferred Ausführangsbeispiels invention of reference to a figure shown in more detail.
Ausfuhrungsbeispielexemplary
Die einzige Figur zeigt eine Schnittdarstellung der erfindungsgemäßen Hochdruckkraftstoffpumpe, geschnitten in der Anordnungsebene der Pumpenkolben. Diese Hochdruckkraftstoffpumpe besteht aus einem Pumpengehäuse 1, auf welchem in einem 120° Winkel zueinander die beiden Pumpenzylinderköpfe 2a und 2b angeordnet sind. In diesen beiden Pumpenzylinderköpfen 2a und 2b sind jeweils die Pumpenkolben 3a und 3b geführt, welche in der Mitte des Pumpengehäuses 1 mit einer gemeinsam polygonen Ausbildung 4 einer Pumpennockenwelle 5 in Kontakt stehen. In den Pumpenzylinderköpfen 2a und 2b werden zudem über Niederdruckzuläufe 6a und 6b die Saugventile 7a und 7b der jeweiligen Pumpenkolben 3 a und 3b mit unter Niederdruck stehendem Kraftstoff versorgt. Die Saugventile 7a und 7b befallen wiederum die oberhalb der Pumpenkolben 3 a und 3b angeordnetenThe single FIGURE shows a sectional view of the high-pressure fuel pump according to the invention, cut in the plane of arrangement of the pump piston. This high-pressure fuel pump consists of a pump housing 1, on which the two pump cylinder heads 2a and 2b are arranged at a 120 ° angle to each other. In these two pump cylinder heads 2a and 2b respectively the pump piston 3a and 3b are guided, which are in the middle of the pump housing 1 with a common polygonal training 4 a pump camshaft 5 in contact. In the pump cylinder heads 2a and 2b, the suction valves 7a and 7b of the respective pump pistons 3a and 3b are also supplied with low-pressure fuel via low-pressure inlets 6a and 6b. The suction valves 7a and 7b in turn attack the above the pump piston 3 a and 3b arranged
Druckräume 8a und 8b mit Kraftstoff. Auf der anderen Seite sind die Niederdruckzuläufe 6a und 6b mit einer Ausnehmung 9 eines Niederdruckblocks 10 verbunden. Im Bereich der Ausnehmung 9 ist eine Zumesseinheit 11 angeordnet, welche mittels eines Nieder druckanschlusses 12 von einer nicht dargestellten Förderpumpe mit unter Niederdruck stehendem Kraftstoff versorgt wird und diesen dosiert, je nach Betriebspunkt derPressure chambers 8a and 8b with fuel. On the other hand, the low-pressure inlets 6a and 6b are connected to a recess 9 of a low-pressure block 10. In the area of the recess 9, a metering unit 11 is arranged, which is supplied by means of a low-pressure connection 12 by a feed pump, not shown, with low-pressure fuel and metered this, depending on the operating point of
Brennkraftmaschine, an die Ausnehmung 9 und damit die Niederdruckzuläufe 6a und 6b weiterleitet. Außerdem ist im Bereich der Druckräume 8a und 8b der Pumpenkolben 3 a und 3b jeweils ein Hochdruckanschluss 13a und 13b angeordnet, welche mit einem nicht dargestellten Hochdruckspeicher in Verbindung stehen.Internal combustion engine, to the recess 9 and thus the low-pressure inlets 6a and 6b forwards. In addition, in the region of the pressure chambers 8a and 8b of the pump piston 3 a and 3b, respectively, a high-pressure port 13a and 13b are arranged, which are in communication with a high-pressure accumulator, not shown.
Bei Betrieb der Brennkraftmaschine wird durch die rotatorische Bewegung der Pumpennockenwelle und der polygonen Ausbildung 4 eine translatorische Bewegung der Pumpenkolben 3 a und 3b erzeugt, was dazu führt, dass über die Niederdruckzuläufe 6a und 6b und die Saugventile 7a und 7b Kraftstoff in die Druckräume 8a und 8b gesogen wird, dort auf Hochdruck verdichtet und zu den Hochdruckanschlüssen 13a und 13b befördert wird. During operation of the internal combustion engine, a translatory movement of the pump pistons 3 a and 3 b is generated by the rotational movement of the pump camshaft and the polygonal training 4, which results in that via the low pressure inlets 6 a and 6 b and the suction valves 7 a and 7 b fuel into the pressure chambers 8 a and 8b is sucked, there compressed to high pressure and transported to the high pressure ports 13a and 13b.

Claims

- A -Ansprüche: - A claims:
1. Hochdruckkraftstoffpumpe zum Betrieb einer Brennkraftmaschine und bestehend aus einem Pumpengehäuse (1) und zwei auf diesem aufgesetzten Pumpenzylinderköpfen (2a, 2b), in welchen jeweils ein Pumpenkolben (3a, 3b) zur Verdichtung von unter Niederdruck stehendem Kraftstoff aus jeweils einem Niederdruckzulauf (6a, 6b) in jeweils einem Druckraum (8a, 8b) auf Hochdruck und zur Förderung des Kraftstoffes zu jeweils einem Hochdruckanschluss (13a, 13b) eines Hochdruckspeichers geführt ist, wobei die beiden Pumpenkolben (3a, 3b) über eine gemeinsame polygone Ausbildung (4) einer Pumpennockenwelle (5) betreibbar sind, dadurch gekennzeichnet, dass die zwei Pumpenzylinderköpfe (2a, 2b) derart auf dem Pumpengehäuse (1) befestigt sind, dass die beiden Pumpenkolben (3 a, 3b) in einem Winkel von 120° zueinander liegen.1. High-pressure fuel pump for operating an internal combustion engine and consisting of a pump housing (1) and two mounted on this pump cylinder heads (2 a, 2 b), in each of which a pump piston (3 a, 3 b) for compression of low-pressure fuel from a respective low-pressure inlet (6 a , 6b) is guided in each case in a pressure chamber (8a, 8b) to high pressure and for conveying the fuel to a respective high-pressure port (13a, 13b) of a high-pressure accumulator, the two pump pistons (3a, 3b) having a common polygonal design (4). a pump camshaft (5) are operable, characterized in that the two pump cylinder heads (2a, 2b) are mounted on the pump housing (1), that the two pump pistons (3a, 3b) are at an angle of 120 ° to each other.
2. Hochdruckkraftstoffpumpe nach Anspruch 1 , dadurch gekennzeichnet, dass eine Zumesseinheit (11) zur Versorgung der beiden Niederdruckzuläufe (6a, 6b) in einem 120°-Winkel zu beiden Pumpenkolben (3a, 3b) angeordnet ist.2. High-pressure fuel pump according to claim 1, characterized in that a metering unit (11) for supplying the two low-pressure inlets (6a, 6b) is arranged at a 120 ° angle to the two pump pistons (3a, 3b).
3. Hochdruckkraftstoffpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass deren Antriebsdrehzahl bezüglich der Drehzahl der Brennkraftmaschine 2/3 beträgt.3. High-pressure fuel pump according to claim 1 or 2, characterized in that the drive speed with respect to the rotational speed of the internal combustion engine is 2/3.
4. Hochdruckkraftstoffpumpe nach Anspruch 2, dadurch gekennzeichnet, dass die Zumesseinheit (11) in einen Niederdruckblock (10) integriert ist, welcher auf das Pumpengehäuse (1) aufgesetzt ist und auf der Aufsatzfläche über eine Ausnehmung (9) verfügt, in welcher die beiden Niederdruckzuläufe (6a, 6b) in einem Winkel größer als 90° zusammenlaufen.4. High-pressure fuel pump according to claim 2, characterized in that the metering unit (11) in a low-pressure block (10) is integrated, which is mounted on the pump housing (1) and on the top surface via a recess (9) has, in which the two Low pressure inlets (6a, 6b) converge at an angle greater than 90 °.
5. Hochdruckkraftstoffpumpe nach Anspruch 4, dadurch gekennzeichnet, dass in dem Niederdruckblock (10) ein Niederdruckanschluss (12) im 90°- Winkel zu der Zumesseinheit (11) angeordnet ist. 5. High-pressure fuel pump according to claim 4, characterized in that in the low-pressure block (10), a low-pressure connection (12) is arranged at 90 ° angle to the metering unit (11).
EP08864925A 2007-12-21 2008-11-24 High-pressure fuel pump Not-in-force EP2235353B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007062181A DE102007062181A1 (en) 2007-12-21 2007-12-21 High pressure fuel pump
PCT/EP2008/066048 WO2009080425A1 (en) 2007-12-21 2008-11-24 High-pressure fuel pump

Publications (2)

Publication Number Publication Date
EP2235353A1 true EP2235353A1 (en) 2010-10-06
EP2235353B1 EP2235353B1 (en) 2011-09-28

Family

ID=40261020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08864925A Not-in-force EP2235353B1 (en) 2007-12-21 2008-11-24 High-pressure fuel pump

Country Status (5)

Country Link
EP (1) EP2235353B1 (en)
CN (1) CN101903639A (en)
AT (1) ATE526500T1 (en)
DE (1) DE102007062181A1 (en)
WO (1) WO2009080425A1 (en)

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Publication number Priority date Publication date Assignee Title
EP2530315A1 (en) * 2011-06-02 2012-12-05 Delphi Technologies Holding S.à.r.l. Fuel pump lubrication
CN103089507B (en) * 2013-01-09 2015-06-10 中国第一汽车股份有限公司无锡油泵油嘴研究所 Double-row six-cylinder radial type common-rail oil feed pump
DE102018108406A1 (en) 2017-06-22 2018-12-27 Denso Corporation High pressure fuel pump and fuel supply system

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GB460327A (en) * 1935-11-27 1937-01-26 Bristol Aeroplane Co Ltd Improvements in or relating to fuel-injection pumps for internal-combustion engines
US2902989A (en) * 1957-02-04 1959-09-08 Gen Motors Corp Charge forming means
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JP4650629B2 (en) * 2004-11-16 2011-03-16 株式会社アドヴィックス Radial plunger pump
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Also Published As

Publication number Publication date
CN101903639A (en) 2010-12-01
DE102007062181A1 (en) 2009-06-25
WO2009080425A1 (en) 2009-07-02
EP2235353B1 (en) 2011-09-28
ATE526500T1 (en) 2011-10-15

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