DE102007055263A1 - High pressure fuel pump for operating internal-combustion engine, has pump cylinder heads with pump pistons drivable over polygon formation in form of square and arranged at angle of specific degree to each other - Google Patents

High pressure fuel pump for operating internal-combustion engine, has pump cylinder heads with pump pistons drivable over polygon formation in form of square and arranged at angle of specific degree to each other Download PDF

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Publication number
DE102007055263A1
DE102007055263A1 DE200710055263 DE102007055263A DE102007055263A1 DE 102007055263 A1 DE102007055263 A1 DE 102007055263A1 DE 200710055263 DE200710055263 DE 200710055263 DE 102007055263 A DE102007055263 A DE 102007055263A DE 102007055263 A1 DE102007055263 A1 DE 102007055263A1
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Germany
Prior art keywords
pump
pressure fuel
pistons
pressure
fuel pump
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Withdrawn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
DE200710055263
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German (de)
Inventor
Friedrich Boecking
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Priority to DE200710055263 priority Critical patent/DE102007055263A1/en
Publication of DE102007055263A1 publication Critical patent/DE102007055263A1/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
    • F02M59/04—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
    • 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
    • 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
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • 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
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • F04B1/0536—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams

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

Abstract

The pump has pump cylinder heads (2a-2d) connected with low pressure inlets (3a-3d) and high pressure connectors (4a-4d). Pump pistons (5a-5d) of the heads are in contact with a polygon formation (6) of an eccentric (7) of a pump cam shaft. The pistons compress a fuel from the inlets to high pressure by an impressed movement and convey the fuel to the connectors. The pistons are drivable over the formation in a form of a square and arranged at an angle of 90 degree to each other. Center axes (8a-8d) of the pistons are set to each other and arranged around a rotation point of the eccentric.

Description

Die vorliegende Erfindung betrifft eine Hochdruckkraftstoffpumpe für den Betrieb einer Brennkraftmaschine und bestehend aus einem Pumpengehäuse und vier Pumpenzylinderköpfen, welche jeweils mit einem Niederdruckzulauf und einen Hochdruckanschluss verbunden sind und jeweils über einen Pumpenkolben verfügen, wobei die jeweiligen Pumpenkolben mit einer polygonen Ausbildung eines Exzenters einer Pumpennockenwelle in Kontakt stehen und durch die durch diese aufgeprägte Bewegung Kraftstoff aus dem jeweiligen Niederdruckzulauf auf Hochdruck verdichten und zum jeweiligen Hochdruckanschluss fördern.The The present invention relates to a high pressure fuel pump for the operation of an internal combustion engine and consisting of a pump housing and four pump cylinder heads, each with a low pressure inlet and a high pressure port are connected and over each have a pump piston, wherein the respective pump piston with a polygonal training of an eccentric pump camshaft be in contact and through which imprinted by this Move fuel from the respective low pressure inlet to high pressure compact and convey to the respective high-pressure connection.

Stand der TechnikState of the art

Aus der DE 196 35 164 A1 ist bereits eine Hochdruckkraftstoffpumpe bekannt, wobei diese über drei Pumpenkolben zur Erzeugung von unter Hochdruck stehendem Kraftstoff verfügt. Diese Pumpenkolben werden gemeinsam über eine polygone Ausbildung in Form eines Sechsecks einer Pumpennockenwelle angetrieben. Die Pumpenkolben werden außerdem jeweils über einen Zulauf des Niederdruckkreislaufes mit unter Niederdruck stehenden Kraftstoff versorgt und sind mit einem Hochdruckanschluss verbunden, welcher die Verbindung zu einem Hochdruckspeicher darstellt. Bei Betrieb der Pumpe wird durch die rotatorische Bewegung der Pumpennockenwelle mit Hilfe der polygonen Ausbildung eine translatorische Bewegung der jeweiligen Pumpenkolben erzeugt, was zum Ansaugen von unter Niederdruck stehenden Kraftstoff, zu verdichten dieses Kraftstoffes auf Hochdruck und zur Förderung zum Hochdruckspeicher führt.From the DE 196 35 164 A1 already a high-pressure fuel pump is known, which has three pump piston for generating high-pressure fuel. These pump pistons are driven together via a polygonal training in the form of a hexagon of a pump camshaft. The pump pistons are also each supplied via an inlet of the low-pressure circuit with low-pressure fuel and are connected to a high-pressure port, which is the connection to a high-pressure accumulator. During operation of the pump, a translatory movement of the respective pump piston is generated by the rotational movement of the pump camshaft with the aid of polygonal training, which leads to the suction of low-pressure fuel, to compress this fuel to high pressure and to promote high-pressure accumulator.

Nachteilhaft an einer derartigen Anordnung ist die nicht optimale Ausnutzung des Bauraumes der Hochdruckkraftstoffpumpe.disadvantageous such an arrangement is not optimal utilization the installation space of the high-pressure fuel pump.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Hochdruckkraftstoffpumpe zu schaffen, bei welcher der Bauraum möglichst optimal ausgenutzt und gleichzeitig eine optimale Befüllung des Hochdruckkraftstoffspeichers bewerkstelligt wird.It Therefore, the object of the present invention is a high pressure fuel pump to create, in which the space as optimal as possible exploited and at the same time optimal filling of the high-pressure fuel storage is accomplished.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die Hochdruckkraftstoffpumpe über vier Pumpenkolben verfügt, welche alle über einen und dieselbe polygone Ausbildung in Form eines Quadrats angetrieben werden und jeweils in 90° Winkel zueinander angeordnet sind. Denn durch die Verwendung eines quadratisch ausgebildeten Polygons als Antriebsmittel der Pumpenkolben ist deren kompakte Anordnung um die Pumpennockenwelle und eine zuverlässige Befüllung des Hochdruckspeichers aufgrund der Verwendung von vier Pumpenkolben möglich.According to the invention This object is achieved in that the high-pressure fuel pump over has four pump piston, which all have a and the same polygonal shape driven in the form of a square are arranged and each at 90 ° to each other are. Because by using a square shaped Polygons as the drive means of the pump piston is their compact Arrangement around the pump camshaft and a reliable Filling the high-pressure accumulator due to the use of four pump pistons possible.

In Weiterbildung der Erfindung sind die Mittelachsen der jeweils gegenüberliegenden Pumpenkolben um einen Betrag zueinander versetzt und beidseitig um den Drehpunkt des Excenters angeordnet, so dass bei Betrieb ein Vorlauf entsteht. Dies hat den Vorteil, dass die Reibverhältnisse aufgrund einer Verringerung der wirkenden Querkraft bei der Verdichtungsbewegung des jeweiligen Kolbens verbessert werden.In Development of the invention are the center axes of each opposite Pump piston offset by an amount to each other and both sides arranged around the pivot point of the Excenters, so that when operating a Pre-emergence arises. This has the advantage that the friction conditions due to a reduction of the acting lateral force during the compression movement the respective piston can be improved.

In einer weiteren Ausgestaltung der Erfindung ist die Führung des jeweiligen Pumpenkolbens in den jeweiligen Pumpenzylinderkopf integriert. Durch diese Maßnahme lässt sich der Herstellungsaufwand des Pumpengehäuses sowie der Aufwand bei der Montage der Pumpe erheblich reduzieren, da die Pumpenkolben mit ihrem jeweiligen Zylinderkopf als Einheit auf das Pumpengehäuse aufgesetzt werden können.In Another embodiment of the invention is the guide of the respective pump piston in the respective pump cylinder head integrated. By this measure, the Production cost of the pump housing and the effort at significantly reduce the assembly of the pump, as the pump piston with their respective cylinder head as a unit on the pump housing can be put on.

In Weiterbildung der Erfindung ist als Verbindungselement zwischen der polygonen Ausbildung und dem jeweiligen Pumpenkolben jeweils ein Tassenstößel vorgesehen. Vorteilhaft ist hierbei, dass durch die Verwendung der gewölbten Kontur eines Tassenstößels die Kontaktreibung zwischen der polygonen Ausbildung und dem jeweiligen Pumpenkolben reduziert werden kann, was zu einer Steigerung des Wirkungsgrades der Hochdruckkraftstoffpumpe führt.In Further development of the invention is as a connecting element between the polygonal training and the respective pump piston respectively provided a bucket tappets. It is advantageous here that by using the curved contour of a bucket tappet the contact friction between the polygonal training and the respective Pump piston can be reduced, resulting in an increase of Efficiency of the high-pressure fuel pump leads.

In einer weiteren Ausgestaltung der Erfindung ist die polygone Ausbildung zwecks der Montage auf dem Exzenter der Pumpennockenwelle teilbar. Durch diese Maßnahme können die Lagerpunkte der Pumpenockenwelle beidseitig im Bereich der Pumpenkolben angeordnet und gleichzeitig die benachbarten Wellenabschnitte des Exzenters individuell gestaltet werden. Dadurch kann die Durchbiegung der Pumpennockenwelle im Betrieb vermindert und gleichzeitig der Herstellungsaufwand reduziert werden.In Another embodiment of the invention is the polygonal training for installation on eccentric pump camshaft divisible. By this measure, the bearing points of the Pump camshaft arranged on both sides in the area of the pump pistons and at the same time the adjacent shaft sections of the eccentric be individually designed. This allows the deflection of the Pump camshaft reduced during operation and at the same time the production cost be reduced.

In Weiterbildung der Erfindung ist die polygone Ausbildung in vier symmetrische Teile teilbar. Dies hat den Vorteil, dass eine Montage der polygonen Ausbildung vor Ort mit geringem Aufwand möglich und trotzdem ein sicherer Betrieb der Hochdruckkraftstoffpumpe gewährleistet ist.In Further development of the invention is the polygonal training in four symmetrical parts divisible. This has the advantage of being an assembly the polygonal training on site with little effort possible and nevertheless ensures safe operation of the high-pressure fuel pump is.

Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand einer Figur näher dargestellt.Further, The measures improving the invention will be described below together with the description of a preferred embodiment of the invention with reference to a figure shown in more detail.

Ausführungsbeispielembodiment

Die einzige Figur zeigt eine Schnittdarstellung der erfindungsgemäßen Hochdruckkraftstoffpumpe senkrecht zu der Pumpennockenwelle in der Anordnungsebene der Pumpenkolben. Diese Hochdruckkraftstoffpumpe besteht im Wesentlichen aus einem Pumpengehäuse 1, an welchem im 90° Winkel zueinander die Pumpenzylinderköpfe 2a, 2b, 2c und 2d angeordnet sind. Diese Pumpenzylinderköpfe 2a, 2b, 2c und 2d beinhalten jeweils einen Niederdruckzulauf 3a, 3b, 3c und 3d und jeweils einen Hochdruckanschluss 4a, 4b, 4c und 4d. Außerdem ist jeweils in einer Führung 9a, 9b, 9c und 9d ein Pumpenkolben 5a, 5b, 5c und 5d geführt. Diese Pumpenkolben 5a bis 5d stehen im Innenraum des Pumpengehäuses 1 mit einer polygonen Ausbildung 6 in Form eines Quadrats eines Exzenters 7 einer Pumpennockenwelle in Kontakt. Die Mittelachsen 8a und 8c, sowie 8b und 8d der gegenüberliegenden Pumpenkolben 5a und 5c, sowie 5b und 5d sind jeweils um einen Betrag zueinander versetzt, so dass ein Vorlauf bei Betrieb entsteht.The single FIGURE shows a sectional view of the high pressure fuel pump according to the invention perpendicular to the pump camshaft in the assembly plane of the pump piston. This high-pressure fuel pump essentially consists of a pump housing 1 at which at 90 ° to each other the pump cylinder heads 2a . 2 B . 2c and 2d are arranged. These pump cylinder heads 2a . 2 B . 2c and 2d each contain a low pressure feed 3a . 3b . 3c and 3d and one high-pressure connection each 4a . 4b . 4c and 4d , Also, each is in a guide 9a . 9b . 9c and 9d a pump piston 5a . 5b . 5c and 5d guided. These pump pistons 5a to 5d stand in the interior of the pump housing 1 with a polygonal education 6 in the form of a square of an eccentric 7 a pump camshaft in contact. The central axes 8a and 8c , such as 8b and 8d the opposite pump piston 5a and 5c , such as 5b and 5d are each offset by an amount to each other, so that a flow occurs during operation.

Bei Betrieb der Hochdruckkraftstoffpumpe wird eine Rotation der Pumpennockenwelle durch die polygone Ausbildung 6 in eine translatorische Bewegung der Pumpenkolben 5a, 5b, 5c und 5d umgewandelt, was dazu führt, dass über den jeweiligen Niederdruckzulauf 3a, 3b, 3c oder 3d Kraftstoff angesaugt, auf Hochdruck verdichtet und zu dem jeweiligen Hochdruckanschluss 4a, 4b, 4c oder 4d gefördert wird.When operating the high-pressure fuel pump, a rotation of the pump camshaft by the polygonal training 6 in a translational movement of the pump piston 5a . 5b . 5c and 5d converted, which causes that over the respective low pressure feed 3a . 3b . 3c or 3d Fuel sucked, compressed to high pressure and to the respective high-pressure connection 4a . 4b . 4c or 4d is encouraged.

11
Pumpengehäusepump housing
2a bis 2d2a to 2d
PumpenzylinderkopfPump cylinder head
3a bis 3d3a to 3d
NiederdruckzulaufLow pressure inlet
4a bis 4d4a to 4d
HochdruckanschlussHigh pressure port
5a bis 5d5a to 5d
Pumpenkolbenpump pistons
66
polygone Ausbildungpolygonal education
77
Exzentereccentric
8a bis 8d8a to 8d
Mittelachse Pumpenkolbencentral axis pump pistons
9a bis 9d9a to 9d
Führung Pumpenkolbenguide pump pistons

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 19635164 A1 [0002] - DE 19635164 A1 [0002]

Claims (6)

Hochdruckkraftstoffpumpe für den Betrieb einer Brennkraftmaschine und bestehend aus einem Pumpengehäuse (1) und vier Pumpenzylinderköpfen (2a–2d), welche jeweils mit einem Niederdruckzulauf (3a–3d) und einem Hochdruckanschluss (4a–4d) verbunden sind und jeweils über einen Pumpenkolben (5a–5d) verfügen, wobei die jeweiligen Pumpenkolben (5a–5d) mit einer polygonen Ausbildung (6) eines Excenters (7) einer Pumpennockenwelle in Kontakt stehen und durch die durch diese aufgeprägte Bewegung Kraftstoff aus dem jeweiligen Niederdruckzulauf (3a–3d) auf Hochdruck verdichten und zum jeweiligen Hochdruckanschluss (4a–4d) fördern, dadurch gekennzeichnet, dass die Pumpenkolben (5a–5d) alle über ein und dieselbe polygone Ausbildung (6) in Form eines Quadrats antreibbar und jeweils im 90°-Winkel zueinander angeordnet sind.High-pressure fuel pump for the operation of an internal combustion engine and consisting of a pump housing ( 1 ) and four pump cylinder heads ( 2a - 2d ), each with a low pressure inlet ( 3a - 3d ) and a high-pressure connection ( 4a - 4d ) and in each case via a pump piston ( 5a - 5d ), wherein the respective pump pistons ( 5a - 5d ) with a polygonal training ( 6 ) of an Excenter ( 7 ) are in contact with a pump camshaft and by the imprinted by this movement fuel from the respective low-pressure inlet ( 3a - 3d ) to high pressure and to the respective high-pressure connection ( 4a - 4d ), characterized in that the pump pistons ( 5a - 5d ) all about one and the same polygonal training ( 6 ) are drivable in the form of a square and each arranged at an angle of 90 ° to each other. Hochdruckkraftstoffpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Mittelachsen (8a–8d) der jeweils gegenüberliegenden Pumpenkolben (5a–5d) um einen Betrag zueinander versetzt und beidseitig um den Rotationspunkt des Excenters (7) angeordnet liegen.High-pressure fuel pump according to claim 1, characterized in that the central axes ( 8a - 8d ) of the respective opposite pump piston ( 5a - 5d ) offset by an amount to each other and on both sides around the rotation point of the Excenters ( 7 ) are arranged. Hochdruckkraftstoffpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass eine Führung (9a–9d) des jeweiligen Pumpenkolbens (5a–5d) in den jeweiligen Pumpenzylinderkopf (2a–2d) integriert ist.High-pressure fuel pump according to claim 1 or 2, characterized in that a guide ( 9a - 9d ) of the respective pump piston ( 5a - 5d ) into the respective pump cylinder head ( 2a - 2d ) is integrated. Hochdruckkraftstoffpumpe nach einem der Ansprüche 1–3, dadurch gekennzeichnet, dass als Verbindungselement zwischen der polygonen Ausbildung (6) und dem jeweiligen Pumpenkolben (5a–5d) jeweils ein Tassenstößel vorgesehen ist.High-pressure fuel pump according to one of claims 1-3, characterized in that as a connecting element between the polygonal training ( 6 ) and the respective pump piston ( 5a - 5d ) is provided in each case a tappet. Hochdruckkraftstoffpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die polygone Ausbildung (6) zwecks der Montage auf dem Excenter (7) teilbar ist.High-pressure fuel pump according to one of the preceding claims, characterized in that the polygonal training ( 6 ) for the purpose of mounting on the eccentric ( 7 ) is divisible. Hochdruckkraftstoffpumpe nach Anspruch 5, dadurch gekennzeichnet, dass die polygone Ausbildung (6) in vier symmetrische Teile teilbar ist.High-pressure fuel pump according to claim 5, characterized in that the polygonal training ( 6 ) is divisible into four symmetrical parts.
DE200710055263 2007-11-20 2007-11-20 High pressure fuel pump for operating internal-combustion engine, has pump cylinder heads with pump pistons drivable over polygon formation in form of square and arranged at angle of specific degree to each other Withdrawn DE102007055263A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200710055263 DE102007055263A1 (en) 2007-11-20 2007-11-20 High pressure fuel pump for operating internal-combustion engine, has pump cylinder heads with pump pistons drivable over polygon formation in form of square and arranged at angle of specific degree to each other

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710055263 DE102007055263A1 (en) 2007-11-20 2007-11-20 High pressure fuel pump for operating internal-combustion engine, has pump cylinder heads with pump pistons drivable over polygon formation in form of square and arranged at angle of specific degree to each other

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DE102007055263A1 true DE102007055263A1 (en) 2009-05-28

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DE200710055263 Withdrawn DE102007055263A1 (en) 2007-11-20 2007-11-20 High pressure fuel pump for operating internal-combustion engine, has pump cylinder heads with pump pistons drivable over polygon formation in form of square and arranged at angle of specific degree to each other

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120186559A1 (en) * 2011-01-24 2012-07-26 Denso Corporation Fuel pump
CN105715473A (en) * 2016-04-01 2016-06-29 郑州科技学院 Multi-cylinder high-pressure radial plunger pump

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635164A1 (en) 1996-08-30 1998-03-05 Bosch Gmbh Robert Piston pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635164A1 (en) 1996-08-30 1998-03-05 Bosch Gmbh Robert Piston pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120186559A1 (en) * 2011-01-24 2012-07-26 Denso Corporation Fuel pump
US9109558B2 (en) * 2011-01-24 2015-08-18 Denso Corporation Fuel pump
CN105715473A (en) * 2016-04-01 2016-06-29 郑州科技学院 Multi-cylinder high-pressure radial plunger pump

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