DE102008002088A1 - High-pressure fuel pump - Google Patents
High-pressure fuel pump Download PDFInfo
- Publication number
- DE102008002088A1 DE102008002088A1 DE200810002088 DE102008002088A DE102008002088A1 DE 102008002088 A1 DE102008002088 A1 DE 102008002088A1 DE 200810002088 DE200810002088 DE 200810002088 DE 102008002088 A DE102008002088 A DE 102008002088A DE 102008002088 A1 DE102008002088 A1 DE 102008002088A1
- Authority
- DE
- Germany
- Prior art keywords
- bellows
- plug
- cup
- cylinder head
- pump according
- 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
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
-
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
Abstract
Eine Steckpumpe zur Einspeisung von hochdruckbeaufschlagtem Kraftstoff in den Brennraum einer Brennkraftmaschine (1), umfassend einen in eine Bohrung der Brennkraftmaschine (1) einfügbaren Zylinderkopf (2) mit einem in Richtung einer Antriebswelle (3) geöffneten Hohlzylinder (4), wobei die Antriebswelle 3 mit einem Exzenter (5) versehen ist und wobei in dem Hohlzylinder (4) ein Kolben (6) aufgenommen ist, der den Hohlzylinder (4) überragt, der an einer verschiebbaren Tasse (7) festgelegt von einer Druckfeder (8) nachgiebig an den Exzenter (5) angedrückt ist. Die Tasse (7) und der Zylinderkopf (2) sind durch einen Faltenbalg (9) flüssigkeitsdicht verbunden.A plug-in pump for feeding highly pressurized fuel into the combustion chamber of an internal combustion engine (1), comprising a cylinder head (2) insertable into a bore of the internal combustion engine (1) with a hollow cylinder (4) open in the direction of a drive shaft (3), the drive shaft 3 is provided with an eccentric (5) and wherein in the hollow cylinder (4) a piston (6) is received, which projects beyond the hollow cylinder (4) on a displaceable cup (7) of a compression spring (8) yielding to the Eccentric (5) is pressed. The cup (7) and the cylinder head (2) are connected by a bellows (9) liquid-tight.
Description
Technisches GebietTechnical area
Die Erfindung geht aus von einer Pumpe, insbesondere von einer Kraftstoffhochdruckpumpe nach dem Oberbegriff von Anspruch 1.The The invention is based on a pump, in particular of a high-pressure fuel pump the preamble of claim 1.
Stand der TechnikState of the art
Eine
solche Kraftstoffhochdruckpumpe ist aus der
Offenbarung der ErfindungDisclosure of the invention
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Kraftstoffhochdruckpumpe mit den Merkmalen gemäß Anspruch 1 hat den Vorteil, dass die mit dem Treibstoff gefüllten Raume der Kraftstoffhochdruckpumpe und die mit dem Schmieröl beaufschlagten Raums der Verbrennungskraftmaschine durch eine flüssigkeitstundurchlässige Faltenbalg vollkommen voneinander getrennt sind. Eine gegenseitige Durchmischung von Kraftstoff und Schmieröl ist daher völlig ausgeschlossen und sowohl eine perfekte Schmierung der Verbrennungskraftmaschine als auch ein ausgezeichneter Verbrennungsablauf stets gewährleistet.The inventive high-pressure fuel pump with the features according to claim 1 has the advantage that filled with the fuel space of the high-pressure fuel pump and the space occupied by the lubricating oil of the internal combustion engine through a fluid-impermeable bellows are completely separated from each other. A mutual mixing of fuel and lubricating oil is therefore completely excluded and both a perfect lubrication of the internal combustion engine as well as an excellent combustion process always guaranteed.
In Anspruch 2 wird eine besonders flexible und durch elastische Rückstellkräfte besonders wenig belastete Ausführung des Faltenbalges angegeben. Dieser besteht aus polymerem Werkstoff und kann mit extrem geringer Wandstärke hergestellt werden. Für die Verformung ist daher kein nennenswerter Energieaufwand erforderlich, was den Kraftstoffverbrauch verringert. Außerdem ist die Bauform kostengünstig herstell- und montierbar.In Claim 2 is a particularly flexible and elastic return forces specified particularly low-loaded design of the bellows. This is made of polymeric material and can be extremely low Wall thickness can be produced. For the deformation Therefore, no appreciable energy consumption is required, which the Reduced fuel consumption. In addition, the design is inexpensive can be produced and assembled.
Die aus Metall bestehende Ausführung nach Anspruch 3 hat den Vorteil völliger Diffusionsdichtigkeit über unbegrenzte Zeiträume. Außerdem haben Metalle den Vorteil völliger Formbeständigkeit bei den in einer Verbrennungskraftmaschine gegebenen Temperaturen und einer guten chemischen Resistenz. Sie werden daher bevorzugt.The Metal existing design according to claim 3 has the Advantage of complete diffusion-tightness over unlimited Periods. In addition, metals have the advantage complete dimensional stability in the in an internal combustion engine given temperatures and good chemical resistance. she are therefore preferred.
Durch die Leckageöffnung gemäß Anspruch 4 wird sichergestellt, dass sich in dem von dem Faltenbalg und der Steckpumpe gegrenzten Raum kein Druckaufbau ergeben kann. Die Trennung der mit Schmieröl und Kraftstoff gefüllten Räume der Verbrennungskraftmaschine durch diesen Raum kann sich dadurch zeitlich unbegrenzt besonders vorteilhaft auswirken.By the leakage opening according to claim 4 is Make sure that is in the of the bellows and the plug-in pump limited space can result in no pressure build-up. The separation of with oil and fuel filled spaces the internal combustion engine through this space can thereby temporally unlimited particularly advantageous effect.
Durch die Ausgestaltung nach Anspruch 5 wird der Vorteil erzielt, dass die Steckpumpe keine äußeren Teile hat, die während der Lagerung und des Transportes funktionsbeeinträchtigend verändert werden können. Auch ein fehlerhafter Einbau ist ganz ausgeschlossen.By the embodiment according to claim 5, the advantage is achieved that the plug-in pump has no outer parts that during the storage and transport dysfunctional can be changed. Also a flawed one Installation is completely excluded.
Die Ausgestaltung nach Anspruch 6 hat den Vorteil, dass der Faltenbalg durch die ihn außenseitig ganz umschließende Druckfeder mechanisch geschützt und dadurch besonders dünnwandig erzeugt werden kann. Die einer Verformung entgegenstehenden, elastischen Kräfte vermindern sich entsprechend, was den Kraftstoffverbrauch verringert.The Embodiment according to claim 6 has the advantage that the bellows by the outside completely enclosing spring mechanically protected and therefore particularly thin-walled can be generated. The deformation of a contrary, elastic Forces decrease accordingly, which reduces fuel consumption reduced.
Die Ausgestaltung nach Anspruch 7 hat den Vorteil, das sich die Länge und damit zugleich der Herstellaufwand des Faltenbalges vermindert.The Embodiment according to claim 7 has the advantage that the length and thus at the same time reduces the manufacturing cost of the bellows.
Die Ausgestaltung nach Anspruch 8 hat den Vorteil, das dass die betriebsbedingten Verformungen des Faltenbalges auf einer extrem großen Länge verteilen. Die spezifischen Verformungen sind demgemäss extrem gering, was den Verformungswiderstand verringert und die die Langlebigkeit verbessert.The Embodiment according to claim 8 has the advantage that that the operational Distribute deformations of the bellows over an extremely long length. The specific deformations are accordingly extremely low, which reduces the resistance to deformation and longevity improved.
Zeichnungdrawing
Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt. Sie werden in der nachfolgenden Zeichnung näher erläutert. Es zeigen:Several Embodiments of the invention are in the drawing shown. They become closer in the following drawing explained. Show it:
Beschreibung der AusführungsbeispieleDescription of the embodiments
In allen Figuren bezeichnen übereinstimmende Bezugszeichen übereinstimmende Gegenstände.In all the figures denote matching reference numerals Items.
Die
in
Die
Tasse
Der
Pumpenraum
Der
von dem Faltenbalg
Die
Tasse
Der
Faltenbalg
Ferner
kann bei einer solchen Bauform das den Zylinderkopf untergreifende
Ende des Faltenbalges
Bei
der in
Der
Faltenbalg
Die
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 19515191 A1 [0002] DE 19515191 A1 [0002]
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810002088 DE102008002088A1 (en) | 2008-05-30 | 2008-05-30 | High-pressure fuel pump |
PCT/EP2009/053871 WO2009144060A1 (en) | 2008-05-30 | 2009-04-01 | High-pressure fuel pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810002088 DE102008002088A1 (en) | 2008-05-30 | 2008-05-30 | High-pressure fuel pump |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008002088A1 true DE102008002088A1 (en) | 2009-12-03 |
Family
ID=40908490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810002088 Ceased DE102008002088A1 (en) | 2008-05-30 | 2008-05-30 | High-pressure fuel pump |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008002088A1 (en) |
WO (1) | WO2009144060A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013098301A1 (en) * | 2011-12-27 | 2013-07-04 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
CN104204501A (en) * | 2012-03-19 | 2014-12-10 | 罗伯特·博世有限公司 | High-pressure pump |
WO2015055332A1 (en) * | 2013-10-14 | 2015-04-23 | Continental Automotive Gmbh | High pressure pump |
DE102014206966A1 (en) | 2014-04-10 | 2015-10-15 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
DE102014206962A1 (en) | 2014-04-10 | 2015-10-15 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
DE102014206965A1 (en) | 2014-04-10 | 2015-10-15 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
WO2017102579A1 (en) * | 2015-12-16 | 2017-06-22 | Delphi International Operations Luxembourg S.À R.L. | High pressure pump with pump spring sealing sleeve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19515191A1 (en) | 1994-04-28 | 1995-11-02 | Nippon Denso Co | High pressure fuel pump |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10318123A (en) * | 1997-05-19 | 1998-12-02 | Honda Motor Co Ltd | High pressure fuel pump |
JP3486124B2 (en) * | 1998-12-28 | 2004-01-13 | 三菱電機株式会社 | High pressure fuel pump device |
FR2903456B1 (en) * | 2006-07-07 | 2008-10-17 | Siemens Automotive Hydraulics | TRANSFER PUMP WITH MULTIPLE PISTONS |
-
2008
- 2008-05-30 DE DE200810002088 patent/DE102008002088A1/en not_active Ceased
-
2009
- 2009-04-01 WO PCT/EP2009/053871 patent/WO2009144060A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19515191A1 (en) | 1994-04-28 | 1995-11-02 | Nippon Denso Co | High pressure fuel pump |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013098301A1 (en) * | 2011-12-27 | 2013-07-04 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
CN104024635A (en) * | 2011-12-27 | 2014-09-03 | 罗伯特·博世有限公司 | High-Pressure Fuel Pump For A Fuel Injection System |
CN104024635B (en) * | 2011-12-27 | 2016-09-07 | 罗伯特·博世有限公司 | The high pressure fuel pump of fuel injection system |
CN104204501A (en) * | 2012-03-19 | 2014-12-10 | 罗伯特·博世有限公司 | High-pressure pump |
WO2015055332A1 (en) * | 2013-10-14 | 2015-04-23 | Continental Automotive Gmbh | High pressure pump |
US10132311B2 (en) | 2013-10-14 | 2018-11-20 | Continental Automotive Gmbh | High pressure pump |
DE102014206966A1 (en) | 2014-04-10 | 2015-10-15 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
DE102014206962A1 (en) | 2014-04-10 | 2015-10-15 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
DE102014206965A1 (en) | 2014-04-10 | 2015-10-15 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system |
WO2017102579A1 (en) * | 2015-12-16 | 2017-06-22 | Delphi International Operations Luxembourg S.À R.L. | High pressure pump with pump spring sealing sleeve |
CN108474337A (en) * | 2015-12-16 | 2018-08-31 | 德尔福知识产权有限公司 | High-pressure pump with pump spring seal sleeve |
US10473076B2 (en) | 2015-12-16 | 2019-11-12 | Delphi Technologies Ip Limited | High pressure pump with pump spring sealing sleeve |
Also Published As
Publication number | Publication date |
---|---|
WO2009144060A1 (en) | 2009-12-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R012 | Request for examination validly filed |
Effective date: 20150319 |
|
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |