DE102008040275A1 - Piston-fuel pump for internal-combustion engine, has housing provided with set of conveyor modules, and drive shaft exhibiting cam section with cam for conveyor modules, where cam is in circular shape - Google Patents
Piston-fuel pump for internal-combustion engine, has housing provided with set of conveyor modules, and drive shaft exhibiting cam section with cam for conveyor modules, where cam is in circular shape Download PDFInfo
- Publication number
- DE102008040275A1 DE102008040275A1 DE200810040275 DE102008040275A DE102008040275A1 DE 102008040275 A1 DE102008040275 A1 DE 102008040275A1 DE 200810040275 DE200810040275 DE 200810040275 DE 102008040275 A DE102008040275 A DE 102008040275A DE 102008040275 A1 DE102008040275 A1 DE 102008040275A1
- Authority
- DE
- Germany
- Prior art keywords
- cam
- drive shaft
- fuel pump
- piston
- conveyor modules
- 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- Withdrawn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
- F02M59/04—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
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung betrifft eine Kolben-Kraftstoffpumpe nach dem Oberbegriff des Anspruchs 1.The The invention relates to a piston fuel pump according to the preamble of claim 1.
Eine
Kolben-Kraftstoffpumpe der eingangs genannten Art ist bspw. aus
der
Offenbarung der ErfindungDisclosure of the invention
Aufgabe der vorliegenden Erfindung ist es, eine Kolben-Kraftstoffpumpe zu schaffen, welche den Kraftstoff möglichst gleichmäßig fördert und eine lange Lebensdauer aufweist.task The present invention is to a piston fuel pump to create the fuel as evenly as possible promotes and has a long life.
Diese Aufgabe wird durch eine Kolben-Kraftstoffpumpe mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in Unteransprüchen angegeben. Darüberhinaus finden sich für die Erfindung wichtige Merkmale in der nachfolgenden Beschreibung und in der Zeichnung. Dabei können diese Merkmale für die Erfindung sowohl in Alleinstellung als auch in unterschiedlichen Kombinationen wichtig sein, ohne dass hierauf nochmals explizit hingewiesen wird.These Task is by a piston fuel pump with the features of claim 1. Advantageous developments of Invention are specified in subclaims. Furthermore find important features for the invention in the following Description and in the drawing. These features can be for the invention both alone and in be important to different combinations without them again explicitly indicated.
Durch eine kreisförmige Nocke wird die Last, die vom Fördermodul bzw. von dessen Kolben auf die Nocke einwirkt, reduziert. Hierdurch wird die Lebensdauer der Kolben-Kraftstoffpumpe verbessert. Darüberhinaus kann eine solche Antriebswelle vergleichsweise preiswert hergestellt werden. Durch die Kreisform werden ferner Geschwindigkeitsspitzen des Kolbens vermieden, so dass eine gleichmäßige Förderung mit ebenfalls reduzierten Belastungen der Hochdruckkomponenten erreicht wird.By a circular cam is the load coming from the conveyor module or by the piston acting on the cam, reduced. hereby the service life of the piston fuel pump is improved. Furthermore can such a drive shaft made comparatively inexpensive become. The circular shape also causes speed peaks of the piston avoided, so that a uniform Promotion with likewise reduced loads on the high-pressure components is reached.
Eine besonders kompakte Bauform wird erreicht, wenn der Nockenabschnitt nur eine einzige Nocke aufweist und mit mindestens zwei Fördermodulen zusammenarbeitet.A particularly compact design is achieved when the cam section has only a single cam and with at least two conveyor modules cooperates.
Sind die Fördermodule zueinander in einer Ebene um 180° versetzt angeordnet, wird das Drehmoment, welches auf die Antriebswelle einwirkt, reduziert, und die Gleichförmigkeit der Förderung wird verbessert. Dies kommt ebenfalls der Lebensdauer zugute.are the conveyor modules offset from each other in a plane by 180 ° arranged, the torque which acts on the drive shaft, reduced, and the uniformity of promotion will be improved. This also benefits the service life.
Die kompakte Bauform der Kolben-Kraftstoffpumpe bei zwei zueinander um 180° versetzt, jedoch in der gleichen Ebene angeordneten Fördermodulen gestattet die Koppelung der Antriebswelle mit einer Ausgleichswelle der Brennkraftmaschine. Dies ermöglicht eine platzsparende Unterbringung der Kolben-Kraftstoffpumpe.The compact design of the piston fuel pump at two to each other offset by 180 °, but arranged in the same plane Conveyor modules allows the coupling of the drive shaft with a balancer shaft of the internal combustion engine. this makes possible a space-saving accommodation of the piston fuel pump.
Die Antriebswelle kann aber auch durch einen Endabschnitt der Ausgleichswelle der Brennkraftmaschien gebildet werden, was noch platzsparender ist und ebenfalls durch die Kompaktheit der erfindungsgemäßen Kolben-Kraftstoffpumpe möglich wird.The Drive shaft but also by an end portion of the balancer shaft the internal combustion engines are formed, which saves even more space is and also by the compactness of the invention Piston fuel pump is possible.
Vorteilhafterweise ist der Durchmesser der Nockenwelle doppelt so groß wie der Durchmesser der Antriebswelle und eine Mittelachse der Nocke liegt auf dem Umfang der Antriebswelle. Dies ist eine einfach herzustellende Geometrie, die darüber hinaus einen günstigen Hubverlauf eines Kolbens eines Fördermoduls bewirkt.advantageously, the diameter of the camshaft is twice as big as the diameter of the drive shaft and a central axis of the cam is located on the circumference of the drive shaft. This is an easy to manufacture Geometry, in addition, a favorable Hubverlauf a piston causes a delivery module.
Nachfolgend werden Ausführungsformen der Erfindung unter Bezugnahme auf die beiliegende Zeichnung erläutert. In der Zeichnung zeigen:following Be embodiments of the invention with reference explained in the accompanying drawings. In the drawing demonstrate:
Die
in
Die
Kolben-Kraftstoffpumpe
Im
Pumpengehäuse
Ungefähr
in ihrer axialen Mitte weist die Antriebwelle
Zu
jedem Fördermodul gehört ein Förderraum
Eine
alternative Ausführungsform ist schematisch in
Aus
Unterschiede
zu der in den
Ein
weiterer wesentlicher Unterschied besteht darin, dass es sich bei
der Antriebswelle
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 10322604 A1 [0002] - DE 10322604 A1 [0002]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810040275 DE102008040275A1 (en) | 2008-07-09 | 2008-07-09 | Piston-fuel pump for internal-combustion engine, has housing provided with set of conveyor modules, and drive shaft exhibiting cam section with cam for conveyor modules, where cam is in circular shape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810040275 DE102008040275A1 (en) | 2008-07-09 | 2008-07-09 | Piston-fuel pump for internal-combustion engine, has housing provided with set of conveyor modules, and drive shaft exhibiting cam section with cam for conveyor modules, where cam is in circular shape |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008040275A1 true DE102008040275A1 (en) | 2010-01-14 |
Family
ID=41412884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810040275 Withdrawn DE102008040275A1 (en) | 2008-07-09 | 2008-07-09 | Piston-fuel pump for internal-combustion engine, has housing provided with set of conveyor modules, and drive shaft exhibiting cam section with cam for conveyor modules, where cam is in circular shape |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008040275A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014037145A1 (en) * | 2012-09-06 | 2014-03-13 | Robert Bosch Gmbh | Internal combustion engine with a crankcase |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10322604A1 (en) | 2003-05-20 | 2004-12-09 | Robert Bosch Gmbh | Set of piston pumps, in particular fuel pumps for internal combustion engines with direct fuel injection |
-
2008
- 2008-07-09 DE DE200810040275 patent/DE102008040275A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10322604A1 (en) | 2003-05-20 | 2004-12-09 | Robert Bosch Gmbh | Set of piston pumps, in particular fuel pumps for internal combustion engines with direct fuel injection |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014037145A1 (en) * | 2012-09-06 | 2014-03-13 | Robert Bosch Gmbh | Internal combustion engine with a crankcase |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R005 | Application deemed withdrawn due to failure to request examination |