DE102008040199A1 - Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston - Google Patents
Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston Download PDFInfo
- Publication number
- DE102008040199A1 DE102008040199A1 DE200810040199 DE102008040199A DE102008040199A1 DE 102008040199 A1 DE102008040199 A1 DE 102008040199A1 DE 200810040199 DE200810040199 DE 200810040199 DE 102008040199 A DE102008040199 A DE 102008040199A DE 102008040199 A1 DE102008040199 A1 DE 102008040199A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- guide grooves
- injection pump
- cups
- axis
- 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- Withdrawn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
- 238000002347 injection Methods 0.000 title claims description 18
- 239000007924 injection Substances 0.000 title claims description 18
- 239000002283 diesel fuel Substances 0.000 title claims description 6
- 238000002485 combustion reaction Methods 0.000 title description 3
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 229910001060 Gray iron Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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
- F02M59/10—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
- F04B1/0413—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
- 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
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 nach dem Oberbegriff von Anspruch 1.The Invention is based on an injection pump for diesel fuel according to the preamble of claim 1.
Stand der TechnikState of the art
Eine
solche Einspritzpumpe 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 die Lagerkörper auf den Kolben übertragenen, parallel zur Kolbenachse wirksamen Kräfte nur minimale Kippbewegungen in den Lagerkörpern verursachen. Die Führung der Lagerkörper und des in den Führungsnuten geführten Mitnehmers sind dadurch nur einem geringen Verschleiß ausgesetzt, es können höchste Pumpendrücke von mehr als 2000 bar realisiert werden 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, acting parallel to the piston axis forces cause only minimal tilting movements in the bearing bodies. The leadership of the bearing body and in the guide grooves guided entrainment are thereby exposed only a small amount of wear, highest pump pressures of more than 2000 bar are realized and there is 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 erreicht, dass die parallel zur Achse der Antriebswelle in den Kolbenführungen auftretenden Kräfte die Führungsnuten nur in geringem Umfang belasten, und zwar insbesondere dann, wenn der Mitnehmer quaderförmig ausgebildet ist und parallel zur Längsrichtung der Führungsnuten eine Länge hat, die größer ist als die Tiefe Führungsnuten. Der Verschleiß wird dadurch vermindert und die Funktionssicherheit weiter erhöht.By the training according to claim 2 is achieved that is parallel to the axis of the drive shaft in the piston guides occurring forces the guide grooves only in small Strain burden, especially if the driver is formed parallelepiped and parallel to the longitudinal direction the guide grooves has a length which is larger is as the depth of guide grooves. 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 Mitnehmers in den Führungsnuten 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 driver in the guide grooves are largely avoided.
Durch die Ausbildung gemäß Anspruch 4 werden die Reaktionskräfte des Kolbens parallel zueinander über beide Tassen in die Antriebswelle eingeleitet. Die spezifischen Flächenpressungen und damit zugleich der Verschleiß werden dadurch vermindert. In bezug auf die Erzielung von hohen Pumpendrücken von mehr als 2000 bar sowie für eine Verbesserung der Dauerhaltbarkeit ist das von großem Vorteil.By The training according to claim 4, the reaction forces of the piston parallel to each other over both cups in the Drive shaft initiated. The specific surface pressures and at the same time the wear is thereby reduced. With regard to achieving high pump pressures of more than 2000 bar as well as for an improvement of the durability that's a big advantage.
Durch die Ausbildung gemäß Anspruch 5 wir die Mengenleistung der Einspritzpumpe ohne bedeutenden Mehraufwand in bezug auf die Herstellkosten verdoppelt.By the training according to claim 5 we the quantity the injection pump without significant overhead in terms of Manufacturing costs doubled.
Zeichnungdrawing
Zwei Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt. Sie werden nachfolgend näher erläutert. Es zeigen:Two Embodiments of the invention are in the drawing shown. They are explained in more detail below. Show it:
Beschreibung der AusführungsbeispieleDescription of the embodiments
Übereinstimmende Bezugszeichen bezeichnen in allen Figuren übereinstimmende Gegenstände.Matching Reference numerals denote matching in all figures Items.
Die
Die
Einspritzpumpe nach den
Bei
der Bauform nach den
Die
Führungsnuten
Der
Kolben
In
allen Bauformen bestehen die Tassen
Die
Lagerkörper
Das
Gehäuse
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] - EP 1013921 B1 [0002]
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810040199 DE102008040199A1 (en) | 2008-07-04 | 2008-07-04 | Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810040199 DE102008040199A1 (en) | 2008-07-04 | 2008-07-04 | Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102008040199A1 true DE102008040199A1 (en) | 2010-01-07 |
Family
ID=41396861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200810040199 Withdrawn DE102008040199A1 (en) | 2008-07-04 | 2008-07-04 | Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102008040199A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518573A (en) * | 2011-12-14 | 2012-06-27 | 江南大学 | Adjustable quantitative injection pump |
| EP2492491A1 (en) * | 2011-02-28 | 2012-08-29 | Delphi Technologies Holding S.à.r.l. | Pumping assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1013921B1 (en) | 1998-12-25 | 2004-08-11 | Denso Corporation | Fuel injection pump |
-
2008
- 2008-07-04 DE DE200810040199 patent/DE102008040199A1/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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2492491A1 (en) * | 2011-02-28 | 2012-08-29 | Delphi Technologies Holding S.à.r.l. | Pumping assembly |
| CN102518573A (en) * | 2011-12-14 | 2012-06-27 | 江南大学 | Adjustable quantitative injection pump |
| CN102518573B (en) * | 2011-12-14 | 2014-11-26 | 江南大学 | Adjustable quantitative injection pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R005 | Application deemed withdrawn due to failure to request examination |