DE102008002089A1 - Injection pump for injection of diesel fuel in internal combustion engine of passenger car, has piston provided with projection that is movable back and froth transverse to movement direction of piston in groove - Google Patents
Injection pump for injection of diesel fuel in internal combustion engine of passenger car, has piston provided with projection that is movable back and froth transverse to movement direction of piston in groove Download PDFInfo
- Publication number
- DE102008002089A1 DE102008002089A1 DE200810002089 DE102008002089A DE102008002089A1 DE 102008002089 A1 DE102008002089 A1 DE 102008002089A1 DE 200810002089 DE200810002089 DE 200810002089 DE 102008002089 A DE102008002089 A DE 102008002089A DE 102008002089 A1 DE102008002089 A1 DE 102008002089A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- projection
- guide groove
- injection pump
- transverse
- 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- Withdrawn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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/007—Cylinder heads
-
- 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
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
Technisches GebietTechnical area
Die Erfindung geht aus von einer Einspritzpumpe für Dieselkraftstoff, insbesondere von einer Kraftstoffhochdruckpumpe nach dem Oberbegriff von Anspruch 1.The Invention is based on an injection pump for diesel fuel, in particular of a high-pressure fuel pump according to the preamble of claim 1.
Stand der TechnikState of the art
Eine
solche Einspritzpumpe ist aus der
Stand der TechnikState of the art
Eine
solche Einspritzpumpe für eine Verbrennungskraftmaschine
ist aus der
Offenbarung der ErfindungDisclosure of the invention
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Einspritzpumpe mit den Merkmalen gemäß Anspruch 1 hat den Vorteil, dass keine Druckfedern mehr benötigt werden. Die Baugröße und das Gewicht der Kraftstoffhochdruckpumpe sind demgemäss erheblich reduziert. Außerdem fallen Störungsrisiken weg, die durch die Verwendung von vorgespannten Druckfedern verursacht werden können, beispielsweise Funktionsstörungen, die auf einen falschen Einbau zurückzuführen sind, die Möglichkeit der Fehlfunktion infolge Federbruchs sowie Verletzungsgefahren und technische Schwierigkeiten bei der Montage. Ein weiterer Vorteil besteht darin, dass die durch den Lagerkörper auf den Kolben übertragenen, parallel zur Kolbenachse wirksamen Kräfte nur minimale Kippbewegungen in dem Lagerkörper verursachen. Die Führung des Lagerkörpers und des in der Führungsnut geführten Vorsprungs sind dadurch nur einem geringen Verschleiß ausgesetzt und es ergibt sich eine gute Funktionssicherheit.The injection pump according to the invention with the features according to claim 1 has the advantage that no compression springs more needed. The size and the weight of the high-pressure fuel pump are accordingly considerably reduced. In addition, risk of failure away, which are caused by the use of prestressed compression springs can, for example, malfunction, the due to a wrong installation, the Possibility of malfunction due to spring failure as well Risk of injury and technical difficulties during installation. Another advantage is that through the bearing body transmitted to the piston, parallel to the piston axis effective Forces only minimal tilting movements in the bearing body cause. The leadership of the bearing body and of the guided in the guide projection are thereby exposed to only a little wear and it results in a good reliability.
In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Hochdruckkraftstoffpumpe angegeben.In the dependent claims are advantageous embodiments and further developments of the high-pressure fuel pump according to the invention specified.
Durch die Ausbildung gemäß Anspruch 2 wird vermieden, dass die parallel zur Achse der Antriebswelle in den Kolbenführungen auftretenden Kräfte die Führungsnut nur in geringem Umfang belasten, und zwar insbesondere dann, wenn der Vorsprung einen quaderförmigen Kolbenfuß hat. Der Verschleiß wird dadurch vermindert und die Funktionssicherheit weiter erhöht.By the training according to claim 2 is avoided that is parallel to the axis of the drive shaft in the piston guides occurring forces the guide only in small Burden the circumference, especially if the projection has a cuboid piston foot. The wear is thereby reduced and the reliability further increased.
Durch die Ausbildung gemäß Anspruch 3 wird eine gute Führung des in der Ausnehmung verdrehbar aufgenommenen Stützkörpers durch die Kolben erzielt. Verkantungen des Kolbenfußes in der Führungsnut werden weitestgehend vermieden.By The training according to claim 3 will be a good Guide the rotatably received in the recess Support body achieved by the piston. canting the piston foot in the guide groove are largely avoided.
Durch die Ausbildung gemäß Anspruch 4 ergibt sich eine Verminderung der Anpressung des Kolbens an die Wandung des ihn aufnehmenden Hohlzylinders. In bezug auf die Erzielung von hohen Pumpendrücken von mehr als 2000 bar sowie für eine Verbesserung der Dauerhaltbarkeit von großem Vorteil.By the training according to claim 4 results in a Reduction of the contact pressure of the piston to the wall of him receiving Hollow cylinder. With regard to achieving high pump pressures of more than 2000 bar and for an improvement in durability of great advantage.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung sind in der Zeichnung dargestellt. Sie wird nachfolgend näher erläutert. Es zeigen:One Embodiment of the invention are in the drawing shown. It will be explained in more detail below. Show it:
Beschreibung des AusführungsbeispielsDescription of the embodiment
Die
Einspritzpumpe, umfasst einen Zylinderkopf
Der
radiale Vorsprung
Durch
die mittige und symmetrische Anordnung der Führungsnut
Der
Vorsprung
Die
Führungsnut
Der
Kolben
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
- - EP 1013921 B1 [0002, 0003] - EP 1013921 B1 [0002, 0003]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810002089 DE102008002089A1 (en) | 2008-05-30 | 2008-05-30 | Injection pump for injection of diesel fuel in internal combustion engine of passenger car, has piston provided with projection that is movable back and froth transverse to movement direction of piston in groove |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810002089 DE102008002089A1 (en) | 2008-05-30 | 2008-05-30 | Injection pump for injection of diesel fuel in internal combustion engine of passenger car, has piston provided with projection that is movable back and froth transverse to movement direction of piston in groove |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008002089A1 true DE102008002089A1 (en) | 2009-12-03 |
Family
ID=41253560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810002089 Withdrawn DE102008002089A1 (en) | 2008-05-30 | 2008-05-30 | Injection pump for injection of diesel fuel in internal combustion engine of passenger car, has piston provided with projection that is movable back and froth transverse to movement direction of piston in groove |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008002089A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1013921B1 (en) | 1998-12-25 | 2004-08-11 | Denso Corporation | Fuel injection pump |
-
2008
- 2008-05-30 DE DE200810002089 patent/DE102008002089A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1013921B1 (en) | 1998-12-25 | 2004-08-11 | Denso Corporation | Fuel injection pump |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R005 | Application deemed withdrawn due to failure to request examination |