DE102008001718A1 - High pressure fuel pump - Google Patents
High pressure fuel pump Download PDFInfo
- Publication number
- DE102008001718A1 DE102008001718A1 DE200810001718 DE102008001718A DE102008001718A1 DE 102008001718 A1 DE102008001718 A1 DE 102008001718A1 DE 200810001718 DE200810001718 DE 200810001718 DE 102008001718 A DE102008001718 A DE 102008001718A DE 102008001718 A1 DE102008001718 A1 DE 102008001718A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- pressure fuel
- camshaft
- cam
- piston
- 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.)
- Ceased
Links
Classifications
-
- 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
- F04B1/0413—Cams
-
- 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
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
-
- 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
Abstract
Die Erfindung betrifft eine Hochdruckkraftstoffpumpe zum Betrieb einer Brennkraftmaschine mit einem Pumpengehäuse (1; 1') und einer Pumpennockenwelle (6), welche über einen Nocken (5; 5') mindestens einen Pumpenkolben (3), welcher in einem Pumpenzylinderkopf (2; 2') verschiebbar geführt ist, über eine Laufrolle (4) antreibt, wobei eine rotatorische Bewegung der Pumpennockenwelle (6) in eine translatorische Bewegung des mindestens einen Pumpenkolbens (3) zum Ansaugen und Verdichten von Kraftstoff auf Hochdruck umwandelbar ist, wobei ferner Mittel vorgesehen sind, um eine Schrägstellung der Oberfläche des mindestens einen Pumpenkolbens (3) zu einer Kontaktfläche der Laufrolle (4) mit der Oberfläche des Nockens (5; 5') zu erreichen.The invention relates to a high-pressure fuel pump for operating an internal combustion engine having a pump housing (1, 1 ') and a pump camshaft (6), which via a cam (5, 5') at least one pump piston (3), which in a pump cylinder head (2; ') is slidably guided, via a roller (4) drives, wherein a rotational movement of the pump camshaft (6) in a translational movement of the at least one pump piston (3) for sucking and compressing fuel to high pressure is converted, further comprising means are provided to achieve an inclination of the surface of the at least one pump piston (3) to a contact surface of the roller (4) with the surface of the cam (5, 5 ').
Description
Die Erfindung betrifft eine Hochdruckkraftstoffpumpe zum Betrieb einer Brennkraftmaschine mit einem Pumpengehäuse und einer Pumpennockenwelle, welche über einen Nocken mindestens einen Pumpenkolben, welcher in einem Pumpenzylinderkopf verschiebbar geführt ist, über eine Laufrolle antreibt, wobei eine rotatorische Bewegung der Pumpennockenwelle in eine translatorische Bewegung des mindestens einen Pumpenkolbens zum Ansaugen und Verdichten von Kraftstoff auf Hochdruck umwandelbar ist.The The invention relates to a high pressure fuel pump for operating a Internal combustion engine with a pump housing and a pump camshaft, which via a cam at least one pump piston, which slidably guided in a pump cylinder head is about a roller drives, being a rotary Movement of the pump camshaft in a translational movement of the at least one pump piston for sucking and compressing fuel is convertible to high pressure.
Stand der TechnikState of the art
Aus
der
Nachteilhaft am bekannten Stand der Technik ist, dass bei einer derartigen Anordnung von Pumpennockenwelle zu Laufrolle und Pumpenkolben alle Toleranzen und große Spiele durch den Pumpenkolben ausgeglichen werden müssen. Zudem wirken bei einer derartigen Anordnung die Querkräfte ungünstig auf die Laufrolle, so dass diese abhängig von den Toleranzlagen immer an einem ihrer beiden Anschläge anliegt und somit vermehrt Verschleiß ausgesetzt ist.disadvantageous The known prior art is that in such an arrangement from pump camshaft to roller and pump piston all tolerances and big games are compensated by the pump piston have to. In addition, act in such an arrangement, the Transverse forces unfavorable to the roller, so that These always depend on the tolerance positions on one of their two Abuts attacks and thus exposed to increased wear is.
Es ist daher die Aufgabe der vorliegenden Erfindung, eine Hochdruckkraftstoffpumpe zu schaffen, welche die Nachteile des Standes der Technik beseitigt.It Therefore, the object of the present invention is a high pressure fuel pump which eliminates the disadvantages of the prior art.
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 Mittel vorgesehen sind, um eine Schrägstellung der Oberfläche des mindestens eine Pumpenkolbens zu einer Kontaktfläche der Laufrolle mit der Oberfläche des Nockens zu erreichen. Durch diese Maßnahme können die vorherrschenden Winkelfehler einer Gesamtpumpe ausgeglichen werden und zusätzlich die Laufrolle gezielt von einem ihrer Anschläge zum anderen bewegt werden, was den Verschleiß der Rollenkuppen vermeidet.The Invention includes the technical teaching that means are provided about a tilt of the surface of at least a pump piston to a contact surface of the roller to reach with the surface of the cam. Through this Measure can be the prevailing angle error a total pump are compensated and in addition the Roll specifically from one of their strokes to another be moved, which avoids the wear of the roller crests.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung sind die Mittel nach Art einer Neigung der Mittelachse des mindestens einen Pumpenkolbens bezüglich der Oberfläche des Nockens ausgebildet. Vorteilhaft ist hierbei, dass sich auf diese Art und Weise die Neigung des Pumpenkolbens und damit die Schrägstellung gegenüber der Oberfläche des Nockens sehr präzise einstellen lässt.According to one Another advantageous embodiment of the invention are the means in the manner of an inclination of the central axis of the at least one pump piston formed with respect to the surface of the cam. The advantage here is that in this way the inclination the pump piston and thus the skew opposite adjust the surface of the cam very precisely leaves.
In Weiterbildung der Erfindung sind die Mittel durch eine konische Ausbildung des Nockens realisiert. Auf diese Art und Weise lässt sich eine Schrägstellung der Kontaktfläche des mindestens einen Pumpenkolbens bezüglich der Oberfläche des Nockens mit niedrigem Herstellungsaufwand darstellen.In Further development of the invention are the means by a conical Training of the cam realized. In this way lets an inclination of the contact surface of at least one pump piston with respect to the surface represent the cam with low manufacturing cost.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung liegt die Schrägstellung im Bereich 0,001° bis 3°. In diesem Bereich wirkt sich eine Schrägstellung am günstigsten bezüglich Ausgleich vorherrschender Winkelfehler und Minderung des Verschleiß der Laufrolle aus.According to one Another advantageous embodiment of the invention, the inclination is in the range 0.001 ° to 3 °. In this area acts An inclination is the most favorable in terms of Compensation of prevailing angular errors and reduction of wear of the Roll out.
In Weiterbildung der Erfindung bildet eine Nockenwelle der Brennkraftmaschine an einer Verlängerung die Pumpennockenwelle. Durch diese Maßnahme ist es möglich, die Hochdruckkraftstoffpumpe mit über die Nockenwelle der Brennkraftmaschine zu betreiben und somit Bauraum einzusparen.In Further development of the invention forms a camshaft of the internal combustion engine on an extension the pump camshaft. By this measure is it possible to use the high pressure fuel pump with over To operate the camshaft of the engine and thus space save.
Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung bevorzugter Ausführungsbeispiele der Erfindung anhand der Figuren näher dargestellt.Further, The measures improving the invention will be described below together with the description of preferred embodiments of the invention with reference to the figures shown in more detail.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigt:It shows:
Ausführliche Beschreibung der ZeichnungenDetailed description the drawings
In
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 102004004705 A1 [0002] - DE 102004004705 A1 [0002]
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810001718 DE102008001718A1 (en) | 2008-05-13 | 2008-05-13 | High pressure fuel pump |
PCT/EP2009/052958 WO2009138263A1 (en) | 2008-05-13 | 2009-03-13 | High-pressure fuel pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810001718 DE102008001718A1 (en) | 2008-05-13 | 2008-05-13 | High pressure fuel pump |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008001718A1 true DE102008001718A1 (en) | 2009-11-19 |
Family
ID=40665561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810001718 Ceased DE102008001718A1 (en) | 2008-05-13 | 2008-05-13 | High pressure fuel pump |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008001718A1 (en) |
WO (1) | WO2009138263A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2492490A1 (en) * | 2011-02-28 | 2012-08-29 | Delphi Technologies Holding S.à.r.l. | Pumping assembly |
DE102011075691A1 (en) | 2011-05-12 | 2012-11-15 | Robert Bosch Gmbh | Pump, in particular high-pressure pump of a fuel injection system |
WO2012156137A1 (en) | 2011-05-18 | 2012-11-22 | Robert Bosch Gmbh | Piston pump |
WO2016058736A1 (en) * | 2014-10-14 | 2016-04-21 | Continental Automotive Gmbh | Fuel pump |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110630464B (en) * | 2019-09-27 | 2021-06-22 | 江苏军源装备制造有限公司 | Variable-displacement high-pressure pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004004705A1 (en) | 2004-01-30 | 2005-08-18 | Robert Bosch Gmbh | High-pressure pump, in particular for a fuel injection device of an internal combustion engine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006051204B4 (en) * | 2006-10-30 | 2016-01-07 | Robert Bosch Gmbh | Camshaft drive with a geometric tolerance compensation |
-
2008
- 2008-05-13 DE DE200810001718 patent/DE102008001718A1/en not_active Ceased
-
2009
- 2009-03-13 WO PCT/EP2009/052958 patent/WO2009138263A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004004705A1 (en) | 2004-01-30 | 2005-08-18 | Robert Bosch Gmbh | High-pressure pump, in particular for a fuel injection device of an internal combustion engine |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2492490A1 (en) * | 2011-02-28 | 2012-08-29 | Delphi Technologies Holding S.à.r.l. | Pumping assembly |
DE102011075691A1 (en) | 2011-05-12 | 2012-11-15 | Robert Bosch Gmbh | Pump, in particular high-pressure pump of a fuel injection system |
WO2012156137A1 (en) | 2011-05-18 | 2012-11-22 | Robert Bosch Gmbh | Piston pump |
DE102011076018A1 (en) | 2011-05-18 | 2012-11-22 | Robert Bosch Gmbh | piston pump |
WO2016058736A1 (en) * | 2014-10-14 | 2016-04-21 | Continental Automotive Gmbh | Fuel pump |
US10054090B2 (en) | 2014-10-14 | 2018-08-21 | Continental Automotive Gmbh | High-pressure fuel pump |
Also Published As
Publication number | Publication date |
---|---|
WO2009138263A1 (en) | 2009-11-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R012 | Request for examination validly filed |
Effective date: 20150312 |
|
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |