DE102006030279B3 - High pressure-crank drive pump for fuel-high pressure supply from fuel-injection system, has piston cylinder units having crossheads with bearing surfaces that are respectively extended and reduced to loaded and unloaded sides of crossheads - Google Patents
High pressure-crank drive pump for fuel-high pressure supply from fuel-injection system, has piston cylinder units having crossheads with bearing surfaces that are respectively extended and reduced to loaded and unloaded sides of crossheads Download PDFInfo
- Publication number
- DE102006030279B3 DE102006030279B3 DE200610030279 DE102006030279A DE102006030279B3 DE 102006030279 B3 DE102006030279 B3 DE 102006030279B3 DE 200610030279 DE200610030279 DE 200610030279 DE 102006030279 A DE102006030279 A DE 102006030279A DE 102006030279 B3 DE102006030279 B3 DE 102006030279B3
- Authority
- DE
- Germany
- Prior art keywords
- crosshead
- crossheads
- fuel
- high pressure
- reduced
- 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.)
- Expired - Fee Related
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
- F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two 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
- F04B1/0404—Details or component parts
- F04B1/0421—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
- 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
- F04B9/045—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 eccentrics
Abstract
Description
Die Erfindung bezieht sich auf eine Hochdruck-Kurbeltriebpumpe, insbesondere zur Kraftstoff-Hochdruckversorgung von Kraftstoff-Einpritzsystemen, mit einem Gehäuse, in welchem eine oder mehrere Kolbenzylindereinheiten mit Kreuzköpfen in einem Winkel zwischen 90° bis 180° zueinander angeordnet sind, wobei Führungsflächen der Kreuzköpfe jeweils in einem Zylinder geführt sind und jeder Kreuzkopf über einen Kreuzkopfbolzen und einen Pleuel mit einer unterhalb der Kolbenzylindereinheit liegenden Antriebswelle verbunden ist und wobei die Führungsflächen entsprechend der unterschiedlichen Belastung des jeweiligen Kreuzkopfes unterschiedlich dimensioniert sind.The The invention relates to a high-pressure crank drive pump, in particular for high-pressure fuel supply of fuel injection systems, with a housing, in which one or more piston-cylinder units with crossheads in one Angle between 90 ° to 180 ° to each other are arranged, wherein guide surfaces of crossheads each guided in a cylinder are and every crosshead over a crosshead bolt and a connecting rod with a lying below the piston-cylinder unit Drive shaft is connected and wherein the guide surfaces according to the different Load of the respective crosshead dimensioned differently are.
Der Kreuzkopf derartiger Hochdruck-Kurbeltriebpumpen muss große Querkräfte senkrecht zur Hochdruckkolbenachse aufnehmen, welche sich aus dem Schwenkwinkel des Pleuels ergeben. Dafür ist es erforderlich, eine möglichst große Führungsfläche des Kreuzkopfes vorzusehen.Of the Phillips such high-pressure crankshaft pumps must large lateral forces perpendicular record to the high-pressure piston axis, which is the swing angle of the connecting rod. Therefore it is necessary to one as possible size Guide surface of the Provide crosshead.
Gleichzeitig muss das verdrängte Volumen des Kreuzkopfes auf die Kreuzkopfrückseite zurückgeführt werden.simultaneously must be the repressed Volume of the crosshead are returned to the crosshead back.
Die beiden vorgenannten Forderungen stehen dann im Widerspruch zueinander, wenn der Ausgleichskanal in das Gehäuse gelegt wird, da im oberen Totpunkt des Kreuzkopfes noch eine gewisse Strömungsfläche verbleiben muss. Dadurch kann nachteiligerweise der Kreuzkopf nicht bis an den stirnseitig begrenzenden Zylinder herangefahren werden, wodurch Führungfläche verschenkt wird.The Both of the aforementioned claims are then in conflict with each other, when the compensation channel is placed in the housing, as in the upper Dead center of the crosshead still a certain flow area must remain. Thereby can disadvantageously the crosshead not to the front are moved to limiting cylinder, which gives away leadership becomes.
Bisheriger Stand der Technik geht also davon aus, dass eine Hochdruck-Kurbeltriebpumpe beidseitig große Führungsflächen besitzt, wobei jeder Kreuzkopf symmetrisch ausgebildet ist.previous The prior art thus assumes that a high-pressure crank drive pump on both sides size Has guide surfaces, wherein each crosshead is symmetrical.
Nächstkommender
Stand der Technik ist eine Radialkolbenpumpe, bei welcher der Pumpenkolben über einen
Pleuel und einen Kreuzkopf mit der Exzenterwelle verbunden ist (
Weiterer
Stand der Technik betrifft eine Schmierung des Kurbelgetriebes von
Hubkolben-Kraft- und Arbeitsmaschinen, insbesondere Kolbenpumpen
(
Ausgehend von der vorgenannten Radialkolbenpumpe besteht erfindungsgemäß die Aufgabe darin, eine Hochdruck-Kurbeltriebpumpe zu schaffen, welche in der Lage ist, auf einfache Weise die beiden vorstehend genannten Forderungen zu erfüllen, nämlich Vorsehen einer möglichst großen Führungsfläche und Zurückführen des verdrängten Volumens auf der Kreuzkopfrückseite.outgoing of the aforementioned radial piston pump according to the invention the task is to create a high pressure crank drive pump which is capable is, in a simple manner, the two aforementioned requirements to fulfill, namely Provide a possible huge Guide surface and Returning the displaced Volume on the crosshead back.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass auf der belasteten Seite des Kreuzkopfes die Führungsfläche verlängert und auf der entlasteten Seite des Kreuzkopfes die Führungsfläche reduziert ist. Dadurch nimmt der Kreuzkopf etwa die Form eines "Nasenkolbens" an.These Task is inventively characterized solved, that extended on the loaded side of the crosshead, the guide surface and on the unloaded side of the crosshead, the guide surface is reduced. Thereby For example, the crosshead takes on the shape of a "nasal piston".
In weiterer Ausgestaltung der Erfindung kann ein Ausgleichskanal auf der entlasteten Seite des Kreuzkopfes vorgesehen sein, wobei dieser Ausgleichskanal vorzugsweise im Gehäuse angeordnet ist. Die Länge des Ausgleichskanals ist hierbei länger als die reduzierte Führungsfläche des Kreuzkopfes.In Further embodiment of the invention may be a compensation channel the relieved side of the crosshead may be provided, this Compensation channel is preferably arranged in the housing. The length of the Equalization channel is longer than the reduced guide surface of the Crosshead.
Nach einem anderen Merkmal der Erfindung kann die Achse des Kreuzkopfbolzens im Schwerpunkt des Kreuzkopfes liegen, woraus vorteilhafterweise eine Minimierung der trägheitsbeding ten Kippbewegung des Kreuzkopfes resultiert mit einem verringerten Verschleiß und einer geringeren Lärmemission.To Another feature of the invention may be the axis of the crosshead bolt lie in the center of gravity of the crosshead, from which advantageously a minimization of the inertia conditions Tilting movement of the crosshead results in reduced wear and tear lower noise emission.
Die Erfindung wird nachfolgend anhand des einzigen in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben.The Invention is described below with reference to the single in the drawing illustrated embodiment described in more detail.
Die Zeichnung zeigt einen Schnitt durch einen Kreuzkopf teils in gebrochener Ausführung.The Drawing shows a section through a crosshead partly broken Execution.
Gemäß der einzigen
Zeichnung liegt eine Hochdruck-Kurbeltriebpumpe
vor, welche insbesondere zur Kraftstoff-Hochdruckversorgung von Kraftstoff-Einspritzsystemen
dient. Es ist ein Gehäuse
Unterhalb
der Kreuzköpfe
liegt eine Antriebswelle
Erfindungsgemäß ist, wie
in der rechten Darstellung der Zeichnung erkennbar, auf der belasteten Seite
Aus
der Zeichnung ist weiterhin erkennbar, dass ein Ausgleichskanal
Um
eine Minimierung der trägheitsbedingten Kippbewegung
des Kreuzkopfes
Durch
die besondere Gestaltung des Kreuzkopfes
Hierdurch ergibt sich auf einfache Weise eine erheblich verbesserte Konstruktion im Gegensatz zum bekannten Stand der Technik.hereby results in a simple way, a significantly improved design in contrast to the known state of the art.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610030279 DE102006030279B3 (en) | 2006-06-30 | 2006-06-30 | High pressure-crank drive pump for fuel-high pressure supply from fuel-injection system, has piston cylinder units having crossheads with bearing surfaces that are respectively extended and reduced to loaded and unloaded sides of crossheads |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610030279 DE102006030279B3 (en) | 2006-06-30 | 2006-06-30 | High pressure-crank drive pump for fuel-high pressure supply from fuel-injection system, has piston cylinder units having crossheads with bearing surfaces that are respectively extended and reduced to loaded and unloaded sides of crossheads |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006030279B3 true DE102006030279B3 (en) | 2007-10-25 |
Family
ID=38537074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610030279 Expired - Fee Related DE102006030279B3 (en) | 2006-06-30 | 2006-06-30 | High pressure-crank drive pump for fuel-high pressure supply from fuel-injection system, has piston cylinder units having crossheads with bearing surfaces that are respectively extended and reduced to loaded and unloaded sides of crossheads |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006030279B3 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2747694B2 (en) * | 1977-10-25 | 1979-11-08 | Balcke-Duerr Ag, 4030 Ratingen | Lubrication of the crank mechanism of reciprocating piston engines and machines, in particular piston pumps |
DE102004048714A1 (en) * | 2004-10-06 | 2006-04-13 | Siemens Ag | Radial piston pump |
-
2006
- 2006-06-30 DE DE200610030279 patent/DE102006030279B3/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2747694B2 (en) * | 1977-10-25 | 1979-11-08 | Balcke-Duerr Ag, 4030 Ratingen | Lubrication of the crank mechanism of reciprocating piston engines and machines, in particular piston pumps |
DE102004048714A1 (en) * | 2004-10-06 | 2006-04-13 | Siemens Ag | Radial piston pump |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE |
|
8339 | Ceased/non-payment of the annual fee |