DE102008040961A1 - 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 - Google Patents
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 Download PDFInfo
- Publication number
- DE102008040961A1 DE102008040961A1 DE200810040961 DE102008040961A DE102008040961A1 DE 102008040961 A1 DE102008040961 A1 DE 102008040961A1 DE 200810040961 DE200810040961 DE 200810040961 DE 102008040961 A DE102008040961 A DE 102008040961A DE 102008040961 A1 DE102008040961 A1 DE 102008040961A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- pin
- pressure fuel
- piston
- 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- Withdrawn
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
- F02M59/10—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
- F04B1/0408—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8015—Provisions for assembly of fuel injection apparatus in a certain orientation, e.g. markings, notches or specially shaped sleeves other than a clip
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Die Erfindung betrifft eine Hochdruckkraftstoffpumpe zum Betrieb einer Brennkraftmaschine mit einem Pumpengehäuse, in welchem eine polygone Ausbildung einer Pumpennockenwelle über eine in einem hohlzylinderförmigen Stößelkörper geführte Laufrolle mit mindestens einem Pumpenkolben in Kontakt steht, welcher in einem auf dem Pumpengehäuse aufgesetzten Pumpenzylinderkopf verschiebbar geführt ist, wobei über die polygone Ausbildung eine rotatorische Bewegung der Pumpennockenwelle in eine translatorische Bewegung des mindestens einen Pumpenkolbens zum Ansaugen und Verdichten von Kraftstoff auf Hochdruck umsetzbar ist.The The invention relates to a high pressure fuel pump for operating a Internal combustion engine with a pump housing, in which a polygonal training of a pump camshaft on a in a hollow cylindrical tappet body guided roller with at least one pump piston in contact stands, which in a patch on the pump housing Pump cylinder head is slidably guided, with over the polygonal training a rotational movement of the pump camshaft in a translational movement of the at least one pump piston for sucking and compressing fuel to high pressure can be implemented is.
Stand der TechnikState of the art
Aus
der
Um eine Verdrehung des Stößelkörpers mitsamt Laufrolle relativ zu dem Pumpenkolben und der polygonen Ausbildung während des Betriebes der Hochdruckkraftstoffpumpe zu verhindern, was ansonsten zu einer Beschädigung und zum Ausfall der Hochdruckkraftstoffpumpe führen würde, ist seitlich zu dem Stößelkörper und in dem Pumpengehäuse eine Verdrehsicherung mit einer Kugel angeordnet, welche in eine axial verlaufende Nut des Stößelkörpers eingreift und somit einer Verdrehung des Stößelkörpers einen Widerstand entgegensetzt.Around a rotation of the plunger body together Roller relative to the pump piston and the polygonal training to prevent during operation of the high-pressure fuel pump otherwise causing damage and failure of the high pressure fuel pump would lead is laterally to the plunger body and in the pump housing an anti-rotation with a Ball arranged, which in an axially extending groove of the plunger body engages and thus a rotation of the plunger body to oppose a resistance.
Nachteilhaft an einer derartigen Anordnung ist allerdings, dass eine derartige Verdrehsicherung Bauraumintensiv ist. Des Weiteren zeichnet sich die Verdrehsicherung des Standes der Technik durch einen aufwendigen Aufbau aus.disadvantageous However, such an arrangement is such Anti-rotation device is space-intensive. Furthermore, it stands out the rotation of the prior art by a complex Construction off.
Es ist daher die Aufgabe der vorliegenden Erfindung, eine Hochdruckkraftstoffpumpe zu schaffen, welche eine Verdrehsicherung für den Stößelkörper mit niedrigem Platzbedarf und einfachem Aufbau aufweist.It Therefore, the object of the present invention is a high pressure fuel pump to create which a rotation for the ram body has a low footprint and simple structure.
Offenbarung der ErfindungDisclosure of the invention
Diese Aufgabe wird ausgehend vom 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 on it the following, dependent claims respectively advantageous developments of the invention again.
Die Erfindung umfasst die technische Lehre, dass der Stößelkörper des Pumpenkolbens eine langlochförmige Ausnehmung aufweist, in welcher ein im Pumpengehäuse schräg zur Bewegungsachse des Pumpenkolbens platzierter Stift mit einer Spitze eingreift. Durch diese Maßnahme wird entsprechend dem Verhältnis von Stiftdurchmesser zu der Umfangserstreckung der langlochförmige Ausnehmung auf dem Stößelkörper eine Verdrehung des Stößelkörpers relativ zu dem Stift verhindert. Des Weiteren ist für die Anordnung eines Stiftes schräg zur Bewegungsachse des Pumpenkolbens nur ein entsprechend kleiner Bauraum nötig, wodurch sich die Hochdruckkraftstoffpumpe in diesem Bereich kompakt gestalten lässt. Außerdem zeichnet sich ein Stift durch einen einfachen Aufbau aus, was den Herstellungsaufwand reduziert.The Invention includes the technical teaching that the plunger body the pump piston has a slot-shaped recess, in which one in the pump housing obliquely to the axis of movement engages the pin positioned with a tip of the pump piston. By this measure is according to the ratio from pin diameter to the circumferential extent of the slot-shaped Recess on the ram body a Rotation of the tappet body relative prevented to the pen. Furthermore, for the arrangement a pin obliquely to the axis of movement of the pump piston only a correspondingly small space required, causing the High pressure fuel pump can be made compact in this area. In addition, a pen is characterized by a simple Structure out, which reduces the manufacturing cost.
Gemäß einer vorteilhaften Ausführungsform der Erfindung weist die Spitze des Stiftes im Kontaktbereich mit dem Stößelkörper Anflachungen auf. Durch diese Anflachungen kann eine Kontaktfläche mit dem Stößelkörper im Gegensatz zu einer gewölbten Oberfläche vergrößert werden. Dementsprechend kann die Flächenpressung an Stift und Stößelkörper bei Kontakt vermindert werden.According to one advantageous embodiment of the invention, the tip of the pin in the contact area with the plunger body Flattening up. Through this Anflachungen can be a contact surface with the plunger body as opposed to a arched surface enlarged become. Accordingly, the surface pressure on pen and ram body reduced upon contact become.
Vorteilhafterweise ist der Stift in einer Bohrung des Pumpengehäuses platziert, welche im montierten Zustand, im Bereich eines Kopfes des Stifts durch den Pumpenzylinderkopf abgedeckt ist. Dadurch kann eine einfache Montage des Stiftes erfolgen.advantageously, the pin is placed in a bore of the pump housing, which in the assembled state, in the region of a head of the pen through the pump cylinder head is covered. This can be a simple Assembly of the pin done.
Entsprechend einer weiteren Ausführungsform weist der Kopf des Stiftes eine Anschrägung auf, mit welcher er im montierten Zustand bündig am Pumpenzylinderkopf anliegt. Dies hat den Vorteil, dass ein Zurückwandern des Stiftes während des Betriebes wirksam unterbunden wird.Corresponding In another embodiment, the head of the pen a chamfer, with which he in the assembled state flush with the pump cylinder head. This has the advantage that a retraining of the pen during operation is effectively prevented.
In Weiterbildung der Erfindung ist unterhalb des Kopfes des Stiftes ein Dichtelement im Pumpengehäuse platziert. Dadurch wird eine zuverlässige Abdichtung der Stiftbohrung erreicht.In Development of the invention is below the head of the pen placed a sealing element in the pump housing. This will achieved a reliable seal the pin hole.
Entsprechend einer vorteilhaften Weiterbildung der Erfindung unterbindet der Stift eine Relativdrehung des Stößelkörpers zur Spitze des Stiftes ab einem Winkel im Bereich von 2° bis 5°. Durch Zulassen einer gewisse Verdrehung des Stößelkörpers können Fertigungstoleranzen ausgeglichen werden.Corresponding an advantageous development of the invention prevents the Pin a relative rotation of the plunger body to the tip of the pencil from an angle in the range of 2 ° to 5 °. By allowing a certain rotation of the plunger body can Manufacturing tolerances are compensated.
In Weiterbildung der Erfindung ist der Stift in einem 30° Winkel zur Bewegungsachse des Pumpenkolbens platziert. Dadurch liegt der Stift sehr nahe an der Bewegungsachse des Pumpenkolbens, wodurch das Pumpengehäuse in diesem Bereich sehr kompakt ausgestaltet werden kann.In Further development of the invention is the pin in a 30 ° angle placed to the movement axis of the pump piston. This is the reason Pin very close to the axis of movement of the pump piston, causing the pump housing designed very compact in this area can be.
Gemäß einer weiteren, vorteilhaften Ausführungsform der Erfindung weisen die Anflachungen in Querrichtung eine Erstreckung im Bereich von 1 bis 4 mm auf. Dies hat den Vorteil, dass eine optimale Kontaktfläche mit dem Stößelkörper ausgebildet wird.According to one have further advantageous embodiment of the invention the flattenings in the transverse direction an extension in the range of 1 to 4 mm. This has the advantage of having an optimal contact surface is formed with the plunger body.
Weitere, die Erfindung verbessernde 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.
Ausführungsform der ErfindungEmbodiment of invention
Die
einzige Figur zeigt eine detaillierte Schnittansicht im Bereich
eines Pumpenkolbens
Durch
eine derartige Anordnung lässt sich, entsprechend des Kontakts
der Stiftspitze mit der langlochförmigen Ausnehmung
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 102005046670 A1 [0002] - DE 102005046670 A1 [0002]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810040961 DE102008040961A1 (en) | 2008-08-04 | 2008-08-04 | 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 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810040961 DE102008040961A1 (en) | 2008-08-04 | 2008-08-04 | 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 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008040961A1 true DE102008040961A1 (en) | 2010-02-11 |
Family
ID=41501352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810040961 Withdrawn DE102008040961A1 (en) | 2008-08-04 | 2008-08-04 | 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 |
Country Status (1)
Country | Link |
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DE (1) | DE102008040961A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103244327A (en) * | 2012-02-03 | 2013-08-14 | 株式会社电装 | Supply pump |
WO2015158994A1 (en) * | 2014-04-18 | 2015-10-22 | Renault S.A.S | Fuel injection pump having a component for blocking rotation and lubricating the plunger |
EP3032089A1 (en) * | 2014-12-12 | 2016-06-15 | Continental Automotive GmbH | Roller tappet arrangement of a high pressure fuel pump, arrangement of a high pressure fuel pump and an engine block of a combustion engine and engine box of a combustion engine |
DE202016008279U1 (en) | 2016-09-07 | 2017-06-14 | Robert Bosch Gmbh | Pump, in particular high-pressure pump of a fuel injection system |
DE102016203501A1 (en) | 2016-03-03 | 2017-09-07 | Robert Bosch Gmbh | Anti-rotation device, ram assembly and high-pressure pump |
WO2018108350A1 (en) * | 2016-12-13 | 2018-06-21 | Robert Bosch Gmbh | Pump, in particular a high-pressure pump of a fuel injection system |
DE102017214845A1 (en) | 2017-08-24 | 2019-02-28 | Robert Bosch Gmbh | Radial piston pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005046670A1 (en) | 2005-09-29 | 2007-04-05 | Robert Bosch Gmbh | High pressure pump for fuel injection device of internal combustion engine, has ball indirectly fixed in part of base plate in tangential direction to tappet and engaged in groove approximately radial to longitudinal axis of tappet |
-
2008
- 2008-08-04 DE DE200810040961 patent/DE102008040961A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005046670A1 (en) | 2005-09-29 | 2007-04-05 | Robert Bosch Gmbh | High pressure pump for fuel injection device of internal combustion engine, has ball indirectly fixed in part of base plate in tangential direction to tappet and engaged in groove approximately radial to longitudinal axis of tappet |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103244327A (en) * | 2012-02-03 | 2013-08-14 | 株式会社电装 | Supply pump |
CN103244327B (en) * | 2012-02-03 | 2015-06-17 | 株式会社电装 | Supply pump |
WO2015158994A1 (en) * | 2014-04-18 | 2015-10-22 | Renault S.A.S | Fuel injection pump having a component for blocking rotation and lubricating the plunger |
FR3020095A1 (en) * | 2014-04-18 | 2015-10-23 | Renault Sas | FUEL INJECTION PUMP WITH ROTATION BLOCKING PIECE AND PUSH LUBRICATION |
EP3032089A1 (en) * | 2014-12-12 | 2016-06-15 | Continental Automotive GmbH | Roller tappet arrangement of a high pressure fuel pump, arrangement of a high pressure fuel pump and an engine block of a combustion engine and engine box of a combustion engine |
DE102016203501A1 (en) | 2016-03-03 | 2017-09-07 | Robert Bosch Gmbh | Anti-rotation device, ram assembly and high-pressure pump |
DE202016008279U1 (en) | 2016-09-07 | 2017-06-14 | Robert Bosch Gmbh | Pump, in particular high-pressure pump of a fuel injection system |
WO2018108350A1 (en) * | 2016-12-13 | 2018-06-21 | Robert Bosch Gmbh | Pump, in particular a high-pressure pump of a fuel injection system |
DE102017214845A1 (en) | 2017-08-24 | 2019-02-28 | Robert Bosch Gmbh | Radial piston pump |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130301 |