DE102008001018A1 - High pressure fuel pump for use as submerged pump for operation of internal combustion engine, has pump housing and pump piston, which is adjustably controlled in pump cylinder head - Google Patents

High pressure fuel pump for use as submerged pump for operation of internal combustion engine, has pump housing and pump piston, which is adjustably controlled in pump cylinder head Download PDF

Info

Publication number
DE102008001018A1
DE102008001018A1 DE200810001018 DE102008001018A DE102008001018A1 DE 102008001018 A1 DE102008001018 A1 DE 102008001018A1 DE 200810001018 DE200810001018 DE 200810001018 DE 102008001018 A DE102008001018 A DE 102008001018A DE 102008001018 A1 DE102008001018 A1 DE 102008001018A1
Authority
DE
Germany
Prior art keywords
pump
pressure fuel
pump housing
internal combustion
combustion engine
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Withdrawn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
DE200810001018
Other languages
German (de)
Inventor
Markus Schetter
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
Priority to DE200810001018 priority Critical patent/DE102008001018A1/en
Publication of DE102008001018A1 publication Critical patent/DE102008001018A1/en
Withdrawn legal-status Critical Current

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
    • F02M59/44—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
    • F02M59/442—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 means preventing fuel leakage around pump plunger, e.g. fluid barriers
    • 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
    • F04B1/0404—Details or component parts
    • F04B1/0439—Supporting or guiding means for the pistons
    • 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
    • F04B1/0448—Sealing means, e.g. for shafts or housings
    • 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

Abstract

The high pressure fuel pump has pump housing (1) and a pump piston (3), which is adjustably controlled in a pump cylinder head (2) and is movable across a cam shaft of an internal combustion engine for sucking and consolidating fuel. The pump piston stands in contact over a tappet body (6) controlled at the pump housing by a roller shoe (7) with a castor (8) with the cam shaft. The sealant units are provided between tappet bodies and pump housing, and between tappet bodies and roller shoe.

Description

Die Erfindung betrifft eine Hochdruckkraftstoffpumpe als Steckpumpe zum Betrieb einer Brennkraftmaschine mit einem Pumpengehäuse und einem Pumpenkolben, welcher in einem Pumpenzylinderkopf verschiebbar geführt und über eine Nockenwelle der Brennkraftmaschine zum Ansaugen und Verdichten von Kraftstoff bewegbar ist, wobei der Pumpenkolben über einen am Pumpengehäuse geführten Stößelkörper mittels eines Rollenschuhs mit Laufrolle mit der Nockenwelle in Kontakt steht.The The invention relates to a high-pressure fuel pump as a plug-in pump for operating an internal combustion engine with a pump housing and a pump piston which is slidable in a pump cylinder head guided and over a camshaft of the internal combustion engine for sucking and compressing fuel is movable, wherein the pump piston via a guided on the pump housing plunger body by means of a roller shoe with roller with the camshaft in Contact stands.

Stand der TechnikState of the art

Aus der DE 297 23 055 U1 ist bereits eine als Steckpumpe ausgebildete Hochdruckkraftstoffpumpe bekannt, bei welcher ein Pumpenkolben über einen Stößelkörper mit Laufrolle durch eine Nockenwelle der Brennkraftmaschine bewegbar ist. Mittels dieser Laufrolle wird eine rotatorische Bewegung der Nockenwelle in eine translatorische Bewegung des Pumpenkolbens umgesetzt, was in einem oberhalb des Pumpenkolbens angeordneten Druckraum zum Ansaugen und anschließendem Verdichten von Kraftstoff führt. Die Steckpumpe ist zu diesem Zweck mit einem Niederdruck- und einem Hochdruckkreislauf verbunden.From the DE 297 23 055 U1 already designed as a plug-pump high-pressure fuel pump is known in which a pump piston via a plunger body with roller by a camshaft of the internal combustion engine is movable. By means of this roller a rotational movement of the camshaft is converted into a translational movement of the pump piston, which leads in a arranged above the pump piston pressure chamber for suction and subsequent compression of fuel. The plug-in pump is connected for this purpose with a low pressure and a high pressure circuit.

Nachteilhaft am bekannten Stand der Technik ist, dass über den Führungsspalt der Kolbenbohrung die Gefahr einer Leckage von Kraftstoff in den Innenraum der Brennkraftmaschine und damit ins Motoröl besteht. Umgekehrt kann über die Kolbenbohrung auch Motoröl in den Innenraum der Pumpe gelangen und somit für eine Verunreinigung des Kraftstoffs sorgen.disadvantageous The known prior art is that on the guide gap the piston bore the risk of leakage of fuel into the interior the internal combustion engine and thus into the engine oil. Vice versa can also engine oil in the through the piston bore Pass inside the pump and thus for contamination of the fuel.

Es ist daher die Aufgabe der vorliegenden Erfindung eine Hochdruckkraftstoffpumpe zu schaffen, welche als Steckpumpe eingesetzt werden kann und bei welcher ein Übergang der Medien zwischen Pumpeninnenraum und Innenraum der Brennkraftmaschine wirksam verhindert wird.It Therefore, the object of the present invention is a high-pressure fuel pump to create, which can be used as a plug-in pump and at which is a transition of the media between pump interior and interior of the internal combustion engine is effectively prevented.

Offenbarung der ErfindungDisclosure of the invention

Diese Aufgabe wird ausgehend von dem Oberbegriff des Anspruchs 1 in Verbindung mit dessen kennzeichnenden Merkmalen gelöst. Die darauf folgenden, abhängigen Ansprüche geben jeweils vorteilhafte Weiterbildungen der Erfindung wieder.These The object is based on the preamble of claim 1 in conjunction solved with its characterizing features. The following, dependent claims give each advantageous Further developments of the invention.

Die Erfindung umfasst die technische Lehre, dass zwischen dem Stößelkörper der Pumpe und dem Pumpengehäuse, sowie zwischen dem Stößelkörper und dem Rollenschuh Dichtmittel vorgesehen sind. Durch diese Maßnahme wird ein Übergang des Mediums Kraftstoff in den Innenraum der Brennkraftmaschine, sowie ein Übergang des Mediums Motoröl in den Innenraum der Pumpe wirksam unterbunden.The Invention includes the technical teaching that between the plunger body the pump and the pump housing, and between the plunger body and the roller shoe sealing means are provided. By this measure will be a transition of the medium fuel into the interior the internal combustion engine, as well as a transition of the medium Engine oil in the interior of the pump effectively prevented.

Gemäß einem weiteren vorteilhaften Ausgestaltung der Erfindung sind die Dichtmittel zwischen Pumpengehäuse und Stößelkörper nach Art einer Stangendichtung ausgeführt. Der Vorteil ist hierbei, dass eine sehr hohe Dichtheit bei gleichzeitig geringer Reibung erzielt werden kann. Zudem gestaltet sich die Montage unproblematisch.According to one Another advantageous embodiment of the invention are the sealants between pump housing and plunger body executed in the manner of a rod seal. The advantage Here is that a very high density at the same time lower Friction can be achieved. In addition, the assembly is unproblematic.

In Weiterbildung der Erfindung sind die Dichtmittel zwischen dem Pumpengehäuse und dem Stößelkörper nach Art mindestens eines Abstreifringes ausgeführt. Durch diese Maßnahme kann der Herstellungsaufwand für die Ausbildung der Dichtung zwischen Pumpengehäuse und Stößelkörper vermindert werden.In Further development of the invention are the sealing means between the pump housing and the plunger body at least by type executed a scraper ring. By this measure Can the manufacturing cost of training the seal between Pump housing and plunger body be reduced.

Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung sind die Dichtmittel zwischen Stößelkörper und Rollenschuh nach Art eines O-Ringes ausgebildet. Durch die Verwendung eines O-Ringes wird eine zuverlässige Abdichtung erreicht, während gleichzeitig der Herstellungsaufwand der Dichtungsanordnung gering gehalten wird.According to one Another advantageous embodiment of the invention are the sealants between plunger body and roller shoe formed in the manner of an O-ring. By using a O-ringes a reliable seal is achieved while at the same time the manufacturing cost of the seal assembly is kept low.

In Weiterbildung der Erfindung steht der Innenraum der Pumpe mit einer Leckagebohrung im Pumpengehäuse in Verbindung. Auf diese Art und Weise kann die entlang der Kolbenbohrung auftretende Leckage aus dem Pumpeninnenraum in den Zulauf zurückgeführt werden.In Development of the invention is the interior of the pump with a Leakage hole in the pump housing in conjunction. To this Way, the leakage occurring along the piston bore returned from the pump interior in the inlet become.

In einer weiteren Ausgestaltung der Erfindung ist der Rollenschuh über einen Sicherungsring am Stößelkörper gesichert. Auf diese Art und Weise wird eine Relativbewegung zwischen Rollenschuh und Stößelkörper gering gehalten und somit die zwischen den beiden Bauteilen platzierte Dichtung weniger belastet.In In another embodiment of the invention, the roller shoe is over a locking ring on the plunger body secured. In this way, a relative movement between Roller shoe and ram body held low and thus the seal placed between the two components less burdened.

Weitere, die Erfindung verbessernden Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der 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 the figure shown in more detail.

Beschreibung der ZeichnungDescription of the drawing

Die einzige Figur zeigt eine Schnittansicht der erfindungsgemäßen Hochdruckkraftstoffpumpe, welche über ein Pumpengehäuse 1 verfügt, auf dem ein Pumpenzylinderkopf 2 aufgesetzt ist. In diesem Pumpenzylinderkopf 2 ist ein Pumpenkolben 3 verschiebbar geführt, welcher über einen Federteller 4 und eine Stößelfeder 5 in einer von dem Pumpenzylinderkopf 2 weg gerichteten Richtung vorgespannt wird. Auf der zu der Stößelfeder 5 entgegengesetzten Seite des Federtellers 4 steht dieser mit einem Stößelkörper 6 in Verbindung, welcher an seinen Außenseiten am Pumpengehäuse 1 geführt ist und im Bereich des Pumpenkolbens 3 zudem einen Rollenschuh 7 aufnimmt. Dieser Rollenschuh 7 steht in seinem unteren Bereich wiederum über eine Laufrolle 8 mit einer hier nicht dargestellten Nockenwelle der Brennkraftmaschine in Kontakt. Um nun eine sichere Abdichtung des Innenraums 9 der Pumpe zu gewährleisten, ist zwischen Stößelkörper 6 und dem Pumpengehäuse 1 eine Stangendichtung 10 angeordnet und des Weiteren zwischen Stößelkörper 6 und Rollenschuh 7 ein O-Ring 11 platziert. Um bei Betrieb der Hochdruckkraftstoffpumpe außerdem eine Relativbewegung zwischen Stößelkörper 6 und Rollenschuh 7 zu unterbinden und somit eine übermäßige Belastung des O-Rings 11 auszuschließen, ist der Rollenschuh 7 durch einen Sicherungsring 12 am Stößelkörper 6 gesichert. Dem Fachmann wird klar sein, dass alternativ auch eine Sicherung über einen Pressverband möglich ist. Um auftretende Leckage entlang der Kolbenbohrung zwischen Pumpenzylinderkopf 2 und Pumpenkolben 3 aus dem Pumpeninnenraum 9 abführen zu können, ist außerdem im Pumpengehäuse 1 eine Leckagebohrung 13 vorgesehen, welche den sich hier sammelnden Kraftstoff zum Zulauf der Hochdruckkraftstoffpumpe zurückführt.The single FIGURE shows a sectional view of the high pressure fuel pump according to the invention, which via a pump housing 1 on which a pump cylinder head 2 is attached. In this pump cylinder head 2 is a pump piston 3 slidably guided, which has a spring plate 4 and a pestle spring 5 in one of the pump cylinder head 2 is biased away direction. On to the pestle spring 5 opposite side of the spring plate 4 this stands with a plunger body 6 connected to its outside on the pump housing 1 is guided and in the area of the pump piston 3 also a roller shoe 7 receives. This roller shoe 7 In turn, there is a roller in its lower area 8th with a camshaft, not shown here of the internal combustion engine in contact. Order now a secure seal of the interior 9 To ensure the pump is between tappet body 6 and the pump housing 1 a rod seal 10 arranged and further between plunger body 6 and roller shoe 7 an O-ring 11 placed. In addition, during operation of the high-pressure fuel pump, a relative movement between plunger body 6 and roller shoe 7 to prevent and thus excessive stress on the O-ring 11 to exclude, is the roller shoe 7 through a circlip 12 on the plunger body 6 secured. It will be clear to the person skilled in the art that, alternatively, it is also possible to secure via a press fit. To prevent leakage along the piston bore between the pump cylinder head 2 and pump piston 3 from the pump interior 9 To be able to dissipate, is also in the pump housing 1 a leakage hole 13 provided, which returns the fuel collecting here to the inlet of the high-pressure fuel pump.

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 29723055 U1 [0002] - DE 29723055 U1 [0002]

Claims (6)

Hochdruckkraftstoffpumpe als Steckpumpe zum Betrieb einer Brennkraftmaschine mit einem Pumpengehäuse (1) und einem Pumpenkolben (3), welcher in einem Pumpenzylinderkopf (2) verschiebbar geführt und über eine Nockenwelle der Brennkraftmaschine zum Ansaugen und Verdichten von Kraftstoff bewegbar ist, wobei der Pumpenkolben (3) über einen am Pumpengehäuse (1) geführten Stößelkörper (6) mittels eines Rollenschuhs (7) mit Laufrolle (8) mit der Nockenwelle in Kontakt steht, dadurch gekennzeichnet, dass zwischen Stößelkörper (6) und Pumpengehäuse (1), sowie zwischen Stößelkörper (6) und Rollenschuh (7) Dichtmittel vorgesehen sind.High-pressure fuel pump as a plug-in pump for operating an internal combustion engine with a pump housing ( 1 ) and a pump piston ( 3 ), which in a pump cylinder head ( 2 ) is displaceably guided and via a camshaft of the internal combustion engine for sucking and compressing fuel is movable, wherein the pump piston ( 3 ) via one on the pump housing ( 1 ) guided ram body ( 6 ) by means of a roller shoe ( 7 ) with roller ( 8th ) is in contact with the camshaft, characterized in that between tappet body ( 6 ) and pump housing ( 1 ), and between tappet body ( 6 ) and roller shoe ( 7 ) Sealing means are provided. Hochdruckkraftstoffpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Dichtmittel zwischen Pumpengehäuse (1) und Stößelkörper (6) nach Art einer Stangendichtung (10) ausgeführt sind.High-pressure fuel pump according to claim 1, characterized in that the sealing means between pump housing ( 1 ) and plunger body ( 6 ) in the manner of a rod seal ( 10 ) are executed. Hochdruckkraftstoffpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Dichtmittel zwischen Pumpengehäuse (1) und Stößelkörper (6) nach Art mindestens eines Abstreifringes ausgeführt sind.High-pressure fuel pump according to claim 1, characterized in that the sealing means between pump housing ( 1 ) and plunger body ( 6 ) are performed on the type of at least one scraper ring. Hochdruckkraftstoffpumpe nach einem der Ansprüche 1–3, dadurch gekennzeichnet, dass die Dichtmittel zwischen Stößelkörper (6) und Rollenschuh (7) nach Art eines O-Ringes (11) ausgebildet sind.High-pressure fuel pump according to one of claims 1-3, characterized in that the sealing means between plunger body ( 6 ) and roller shoe ( 7 ) in the manner of an O-ring ( 11 ) are formed. Hochdruckkraftstoffpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Innenraum (9) von dieser mit einer Leckagebohrung (13) im Pumpengehäuse (1) in Verbindung steht.High-pressure fuel pump according to one of the preceding claims, characterized in that an interior ( 9 ) of this with a leakage hole ( 13 ) in the pump housing ( 1 ). Hochdruckkraftstoffpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Rollenschuh (7) über einen Sicherungsring (12) am Stößelkörper (6) gesichert ist.High-pressure fuel pump according to one of the preceding claims, characterized in that the roller shoe ( 7 ) via a retaining ring ( 12 ) on the tappet body ( 6 ) is secured.
DE200810001018 2008-04-07 2008-04-07 High pressure fuel pump for use as submerged pump for operation of internal combustion engine, has pump housing and pump piston, which is adjustably controlled in pump cylinder head Withdrawn DE102008001018A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200810001018 DE102008001018A1 (en) 2008-04-07 2008-04-07 High pressure fuel pump for use as submerged pump for operation of internal combustion engine, has pump housing and pump piston, which is adjustably controlled in pump cylinder head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810001018 DE102008001018A1 (en) 2008-04-07 2008-04-07 High pressure fuel pump for use as submerged pump for operation of internal combustion engine, has pump housing and pump piston, which is adjustably controlled in pump cylinder head

Publications (1)

Publication Number Publication Date
DE102008001018A1 true DE102008001018A1 (en) 2009-10-08

Family

ID=41051227

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200810001018 Withdrawn DE102008001018A1 (en) 2008-04-07 2008-04-07 High pressure fuel pump for use as submerged pump for operation of internal combustion engine, has pump housing and pump piston, which is adjustably controlled in pump cylinder head

Country Status (1)

Country Link
DE (1) DE102008001018A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038994A1 (en) 2010-08-06 2012-02-09 Robert Bosch Gmbh High-pressure pump for fuel injector of internal combustion engine, particularly common-rail injection system, has valve which opens when predetermined pressure is reached during delivery phase of high pressure pump
WO2012079831A1 (en) 2010-12-17 2012-06-21 Robert Bosch Gmbh High-pressure pump
DE102012007125A1 (en) * 2012-04-07 2013-10-10 Volkswagen Aktiengesellschaft Radial piston pump for fuel delivery in fuel injection system of internal combustion engine, has annular chamber containing opening that contains optionally available or freely available substances
WO2014096162A1 (en) * 2012-12-21 2014-06-26 Continental Automotive Gmbh Plug-in pump
DE102015002304A1 (en) 2015-02-24 2016-03-31 Mtu Friedrichshafen Gmbh High-pressure fuel pump
WO2016055250A1 (en) * 2014-10-09 2016-04-14 Robert Bosch Gmbh Pump for supplying fuel at high pressure to an internal combustion engine
GB2543500A (en) * 2015-10-19 2017-04-26 Delphi Int Operations Luxembourg Sarl High pressure fuel pump
EP3173590A1 (en) * 2015-11-24 2017-05-31 Aktiebolaget SKF Cam follower roller device with washer
IT201700069524A1 (en) * 2017-06-22 2018-12-22 Bosch Gmbh Robert PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29723055U1 (en) 1997-05-15 1998-05-07 Daimler Benz Ag Plug-in pump for a diesel internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29723055U1 (en) 1997-05-15 1998-05-07 Daimler Benz Ag Plug-in pump for a diesel internal combustion engine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038994A1 (en) 2010-08-06 2012-02-09 Robert Bosch Gmbh High-pressure pump for fuel injector of internal combustion engine, particularly common-rail injection system, has valve which opens when predetermined pressure is reached during delivery phase of high pressure pump
WO2012079831A1 (en) 2010-12-17 2012-06-21 Robert Bosch Gmbh High-pressure pump
DE102010063363A1 (en) 2010-12-17 2012-06-21 Robert Bosch Gmbh high pressure pump
DE102012007125A1 (en) * 2012-04-07 2013-10-10 Volkswagen Aktiengesellschaft Radial piston pump for fuel delivery in fuel injection system of internal combustion engine, has annular chamber containing opening that contains optionally available or freely available substances
US9951733B2 (en) * 2012-12-21 2018-04-24 Continental Automotive Gmbh Plug-in pump
WO2014096162A1 (en) * 2012-12-21 2014-06-26 Continental Automotive Gmbh Plug-in pump
US20150345447A1 (en) * 2012-12-21 2015-12-03 Continental Automotive Gmbh Plug-In Pump
WO2016055250A1 (en) * 2014-10-09 2016-04-14 Robert Bosch Gmbh Pump for supplying fuel at high pressure to an internal combustion engine
DE102015002304A1 (en) 2015-02-24 2016-03-31 Mtu Friedrichshafen Gmbh High-pressure fuel pump
GB2543500A (en) * 2015-10-19 2017-04-26 Delphi Int Operations Luxembourg Sarl High pressure fuel pump
GB2543500B (en) * 2015-10-19 2019-12-11 Delphi Tech Ip Ltd High pressure fuel pump
EP3173590A1 (en) * 2015-11-24 2017-05-31 Aktiebolaget SKF Cam follower roller device with washer
US10190444B2 (en) 2015-11-24 2019-01-29 Aktiebolaget Skf Cam follower roller device with washer
IT201700069524A1 (en) * 2017-06-22 2018-12-22 Bosch Gmbh Robert PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE

Similar Documents

Publication Publication Date Title
DE102008001018A1 (en) High pressure fuel pump for use as submerged pump for operation of internal combustion engine, has pump housing and pump piston, which is adjustably controlled in pump cylinder head
DE102008033411B4 (en) check valve
DE102016208826A1 (en) Drive mechanism, pump assembly and lubrication system
DE102009001631A1 (en) High pressure pump and plunger assembly
DE102008040961A1 (en) High pressure fuel pump for operating internal-combustion engine of motor vehicle, has pin positioned in pump housing and inclined to movement axis of pump piston, where pump piston engages with tip of pin in recess of tappet body
DE102015202632A1 (en) High pressure pump for a fuel injection system
DE102008010238A1 (en) High pressure element for fuel injection system of internal-combustion engine, has cylinder bore and piston guided in cylinder bore, where cylinder bore and front surface of piston limit high pressure area
DE102009002530A1 (en) High-pressure pump for use in fuel injection system of internal combustion engine, has valve support prestressed against pump cylinder head by clamping element, and sealing device provided between support and head to seal pressure chamber
DE102010038994A1 (en) High-pressure pump for fuel injector of internal combustion engine, particularly common-rail injection system, has valve which opens when predetermined pressure is reached during delivery phase of high pressure pump
DE102010003674A1 (en) Annular sealing element
DE102014224724A1 (en) high pressure pump
DE102010062174A1 (en) Valve, in particular an outlet valve of a hydraulic piston pump
DE102009027689A1 (en) Fuel high-pressure pump for fuel injection system of internal-combustion engine of motor vehicle, has slots extending from central through-hole of spring disk, which is supported at guided piston in axial direction
DE102014206968A1 (en) High pressure pump and high pressure directional valve
DE102013203711A1 (en) Seat valve for use as e.g. low pressure seat valve in radial piston engine of road vehicle, has valve seat attached to disk, which comprises closure ring that is provided at seat, where closure ring is attached at plunger over plate spring
DE102008040959B4 (en) Tappet rotation lock of a high pressure fuel pump
DE102008000955A1 (en) High pressure fuel pump for use as plug-in pump in crankcase, for operating internal combustion engine, has defined gap provided between inner diameter of sleeve and upper outlet of reduced diameter part of pump piston
DE102008054753A1 (en) Internal gear pump
DE102007048853A1 (en) Flange of a high pressure fuel pump
DE112018006859T5 (en) Fuel pump with independent piston cover and seal
DE102007062179A1 (en) High pressure fuel pump for operating internal-combustion engine, has polygon-shaped component moved axially by adjustment unit that is vertical with respect to direction of stroke of pump piston, to obtain variation in stroke of piston
DE102010010725A1 (en) Hydraulic clamping element, has ventilation device limiting vent channel and with surface area deformed in pressure chamber such that surface area rests on other surface area and closes vent channel
DE102010027792A1 (en) high pressure pump
DE202017100695U1 (en) Clamping device with spring ring comprehensive transport lock
DE202006014415U1 (en) Actuating piston for pump unit for hydraulic brake system or clutch for motor vehicle has piston with closable ventilation channel extending between high pressure side and low pressure side

Legal Events

Date Code Title Description
R012 Request for examination validly filed
R012 Request for examination validly filed

Effective date: 20150123

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee