DE102006034768A1 - Radial piston pump unit for high-pressure fuel supply in fuel injection systems - Google Patents
Radial piston pump unit for high-pressure fuel supply in fuel injection systems Download PDFInfo
- Publication number
- DE102006034768A1 DE102006034768A1 DE200610034768 DE102006034768A DE102006034768A1 DE 102006034768 A1 DE102006034768 A1 DE 102006034768A1 DE 200610034768 DE200610034768 DE 200610034768 DE 102006034768 A DE102006034768 A DE 102006034768A DE 102006034768 A1 DE102006034768 A1 DE 102006034768A1
- Authority
- DE
- Germany
- Prior art keywords
- pump unit
- piston pump
- radial piston
- unit according
- side windows
- 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- Withdrawn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
- F02M59/06—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 with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
-
- 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
- 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
-
- 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
- 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
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Reciprocating Pumps (AREA)
- Compressor (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Die Erfindung bezieht sich auf eine Radialkolbenpumpeneinheit zur Kraftstoff-Hochdruckversorgung bei Kraftstoff-Einspritzsystemen, insbesondere bei Common-Rail-Hochdruck-Einspritzsystemen, mit einem Pumpengehäuse 1, in welchem eine Antriebswelle 21 mit mindestens einem Exzenterabschnitt 31 gelagert ist, mit einem Exzenterring 15, welcher mindestens eine Betätigungsscheibe 10 eines in einem Zylinder 2 gelagerten Verdichterkolbens 4 beaufschlagt, mit einem einen Teil des Zylinders 2 umgebenden Stützelement, welches durch mindestens eine Feder 11 belastet ist, und mit einem mit dem Verdichterkolben 4 zusammenwirkenden Saug- und einem Druckventil 6, 7. Erfindungsgemäß sind auf der Antriebswelle 21 im Bereich des Exzenterabschnitts 31 zwei Seitenscheiben 17, 17' mit Polygonflächen gelagert, welche als Mitnahmemechanismus für den Exzenterring 15 dienen, wobei das Stützelement jedes Zylinders 2 als Stößelbecher 13 ausgebildet ist, welcher sich im unteren Bereich auf den Polygonflächen der Seitenscheiben 17, 17' abstützt und gleitet.The invention relates to a radial piston pump unit for high-pressure fuel supply in fuel injection systems, in particular in common-rail high-pressure injection systems, with a pump housing 1, in which a drive shaft 21 is mounted with at least one eccentric 31, with an eccentric 15, which at least one actuating disk 10 of a mounted in a cylinder 2 compressor piston 4 is acted upon, with a part of the cylinder 2 surrounding support member which is loaded by at least one spring 11, and with a cooperating with the compressor piston 4 suction and a pressure valve 6, 7th According to the invention on the drive shaft 21 in the region of the eccentric 31 two side plates 17, 17 'mounted with polygonal surfaces which serve as a driving mechanism for the eccentric ring 15, wherein the support member of each cylinder 2 is formed as a plunger cup 13, which is in the lower area on the Polygonfläc hen the side windows 17, 17 'is supported and slides.
Description
Die Erfindung bezieht sich auf eine Radialkolbenpumpeneinheit zur Kraftstoff-Hochdruckversorgung bei Kraftstoff-Einspritzsystemen, insbesondere bei Common-Rail-Hochdruck-Einspritzsystemen, mit einem Pumpengehäuse, in welchem eine Antriebswelle mit mindestens einem Exzenterabschnitt gelagert ist, mit einem Exzenterring, welcher mindestens eine Betätigungsscheibe eines in einem Zylinder gelagerten Verdichterkolbens beaufschlagt, mit einem, einen Teil des Zylinders umgebenden Stützelement, welches durch mindestens eine Feder belastet ist und mit einem mit dem Verdichterkolben zusammenwirkenden Saug- und einem Druckventil.The The invention relates to a radial piston pump unit for fuel high pressure supply in fuel injection systems, in particular in common-rail high-pressure injection systems, with a pump housing, in which a drive shaft with at least one eccentric portion is mounted, with an eccentric ring, which at least one actuating disc acted upon in a cylinder mounted compressor piston, with a, a part of the cylinder surrounding support element, which by at least a spring is loaded and with a cooperating with the compressor piston Suction and a pressure valve.
Als allgemeiner Stand der Technik ist es bereits bekannt, an einer Hochdruckpumpe, welche zur Kraftstoffversorgung bei einem Common-Rail-Einspritzsystem dient, einen Exzenterring mit drei Polygonflächen als Antriebselement einzusetzen, wenn drei Kolbenzylindereinheiten zu beaufschlagen sind. Diese Polygonflächen dienen als Gleitfläche für jeweils einen Gleitschuh, auf dem sich der jeweilige Kolben abstützt. Die Gleitbewegung zwischen dem jeweiligen Gleitschuh und den Polygonflächen ist wichtig bei der Huberzeugung des jeweiligen Kolbens.When It is already known from the prior art to use a high-pressure pump. which for fuel supply in a common rail injection system serves to use an eccentric ring with three polygonal surfaces as the drive element, when three piston-cylinder units are to be charged. These polygon surfaces are used as a sliding surface for each a shoe on which the respective piston is supported. The Sliding motion between the respective shoe and the polygon surfaces is important in the Huberzeugung the respective piston.
Bei diesem Stand der Technik bestand die Zylindereinheit an der entsprechenden Stelle aus einem Stützkolben und einer Scheibe. Die Scheibe wurde hierbei durch einen Sprengring sowie einer entsprechenden Nut im Stützkolben gesichert. Die Stützkolben- und Scheibenbewegung wurde eine Haltescheibe und einen Ring auf den Pumpenkolben übertragen.at In this prior art, the cylinder unit was at the corresponding Place from a support piston and a disc. The disc was here by a snap ring and a corresponding groove secured in the support piston. The support piston and disk movement became a holding disk and a ring on transfer the pump piston.
Als
Stand der Technik ist in diesem Zusammenhang eine Radialkolbenpumpeneinheit
für Hochdruck-Einspritzsysteme
bekannt (
Entsprechend den vorgenannten Problemen liegt die Aufgabe der vorliegenden Erfindung darin, eine Radialkolbenpumpeneinheit der eingangs genannten Art zu schaffen, welche zu einer Reduzierung des Verschleißes beiträgt und eine kostengünstigere Konstruktion darstellt.Corresponding The above problems are the object of the present invention therein, a radial piston pump unit of the type mentioned to create, which contributes to a reduction of wear and a cost-effective Construction represents.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass auf der Antriebswelle im Bereich des Exzenterabschnitts zwei Seitenscheiben mit Polygonflächen gelagert sind, welche als Mitnahmemechanismus für den Exzenterring dienen und dass das Stützelement jeden Zylinders als Stößelbecher ausgebildet ist, welcher sich im unteren Bereich auf den Polygonflächen der Seitenscheiben abstützt und gleitet.These Task is inventively characterized solved, that on the drive shaft in the region of the eccentric section two Side windows with polygonal surfaces are stored, which serve as a driving mechanism for the eccentric ring and that the support element each cylinder as a push cup is formed, which in the lower area on the polygon surfaces of the Side windows supported and slides.
Hierdurch ergibt sich vorteilhafterweise im Hinblick auf den bekannten Stand der Technik eine kostengünstigere Konstruktion durch Entfall der Haltescheibe und des Kolbenrings. Es erfolgt ein direkter Kraftfluss vom Pumpenkolben auf den Exzenterring mit Aufnahme der Querkräfte durch die jeweiligen Stößelbecher. Es besteht die Möglichkeit der Vergrößerung der Aufstandsfläche zwischen dem Kolben und dem Exzenterring und somit geringeren Flächenpressungen bei Reduzierung des Verschleißes und Aufnahmemöglichkeit von höheren Kolbenkräften. In Folge der Möglichkeit, die einzelnen Elemente formschlüssig aneinander zu koppeln ergibt sich darüber hinaus vorteilhafterweise eine modulare Bauweise.hereby results advantageously in view of the known state the technology a cheaper Construction by omission of the retaining washer and the piston ring. There is a direct flow of power from the pump piston to the eccentric ring Absorption of the lateral forces through the respective pusher cups. There is a possibility the enlargement of the footprint between the piston and the eccentric ring and thus lower surface pressures with reduction of wear and recording option from higher Piston forces. As a result of the possibility the individual elements form fit Coupling to each other also results in an advantageous manner a modular design.
In weiterer Ausgestaltung der Erfindung können die beiden Seitenscheiben identisch ausgebildet und beidseitig des Exzenterabschnittes spiegelbildlich zueinander auf der An triebswelle angeordnet sein. Hierbei sind die Polygonflächen der Seitenscheiben auf die Anzahl der durch den Exzenterring beaufschlagten Betätigungsscheiben der Verdichterkolben abgestellt. Darüber hinaus weist jede Seitenscheibe über ihren Umfang wechselweise Polygonflächen und offene Flanschbereiche auf.In Further embodiment of the invention, the two side windows identically formed and on both sides of the eccentric mirror image be arranged on the drive shaft to each other. Here are the polygon areas the side windows on the number of acted upon by the eccentric ring actuator discs the compressor piston turned off. In addition, each side window has its own Perimeter alternately polygon surfaces and open flange areas.
Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprächen.advantageous Further developments emerge from the Unteransprächen.
Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben.The Invention will now be described with reference to a drawing embodiment described in more detail.
In der Zeichnung zeigenIn show the drawing
Nach
den
Im
oberen Bereich des Gehäuses
Auf
der Antriebswelle
Auf
der Antriebswelle
Die
beiden spiegelbildlich einander zugeordneten Seitenscheiben
Ein
weiterer Gleitflächenbereich
Weiterhin
ergibt sich ein Gleitflächenbereich
Jeder
Stößelbecher
Aus
den
Aus
Die
Stößelbecher
Durch
die erfindungsgemäße Konstruktion ergibt
sich eine modulare Bauweise, das heißt alle Bauteile sind formschlüssig einfach
miteinander zu koppeln. Es erfolgt ein direkter Kraftfluss vom Verdichterkolben
zum Exzenterring. Weiterhin ist ein getrennter Kraftfluss möglich durch
die Konstruktionselemente Stößelbecher – Seitenscheibe
einerseits und Verdichterkolben – Exzenterring andererseits. Die
Querkräfte
werden vorteilhafterweise durch die Stößelbecher
Claims (11)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610034768 DE102006034768A1 (en) | 2006-07-27 | 2006-07-27 | Radial piston pump unit for high-pressure fuel supply in fuel injection systems |
EP07787839A EP2049789B1 (en) | 2006-07-27 | 2007-07-24 | Radial piston pump unit for supplying fuel at high pressure in fuel injection systems |
DE502007005906T DE502007005906D1 (en) | 2006-07-27 | 2007-07-24 | RADIAL PISTON PUMP UNIT FOR FUEL HIGH PRESSURE SUPPLY IN FUEL INJECTION SYSTEMS |
PCT/EP2007/057596 WO2008012295A2 (en) | 2006-07-27 | 2007-07-24 | Radial piston pump unit for supplying fuel at high pressure in fuel injection systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610034768 DE102006034768A1 (en) | 2006-07-27 | 2006-07-27 | Radial piston pump unit for high-pressure fuel supply in fuel injection systems |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006034768A1 true DE102006034768A1 (en) | 2008-01-31 |
Family
ID=38657239
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610034768 Withdrawn DE102006034768A1 (en) | 2006-07-27 | 2006-07-27 | Radial piston pump unit for high-pressure fuel supply in fuel injection systems |
DE502007005906T Active DE502007005906D1 (en) | 2006-07-27 | 2007-07-24 | RADIAL PISTON PUMP UNIT FOR FUEL HIGH PRESSURE SUPPLY IN FUEL INJECTION SYSTEMS |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE502007005906T Active DE502007005906D1 (en) | 2006-07-27 | 2007-07-24 | RADIAL PISTON PUMP UNIT FOR FUEL HIGH PRESSURE SUPPLY IN FUEL INJECTION SYSTEMS |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2049789B1 (en) |
DE (2) | DE102006034768A1 (en) |
WO (1) | WO2008012295A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20081449A1 (en) * | 2008-08-01 | 2010-02-02 | Bosch Gmbh Robert | HIGH PRESSURE COMMON RAIL PUMP WITH COMPOSED PRISMATIC RING AND FUEL SUPPLY SYSTEM FOR A COMMON RAIL ENGINE INCLUDING SUCH PUMP |
ITMI20081470A1 (en) * | 2008-08-05 | 2010-02-06 | Bosch Gmbh Robert | HIGH PRESSURE PUMP FOR FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE |
ITMI20090112A1 (en) * | 2009-01-30 | 2010-07-31 | Bosch Gmbh Robert | PISTON PUMP TO SUPPLY FUEL, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US9537718B2 (en) | 2013-03-15 | 2017-01-03 | Cisco Technology, Inc. | Segment routing over label distribution protocol |
DE102014220937B4 (en) | 2014-10-15 | 2016-06-30 | Continental Automotive Gmbh | Drive device for driving a high-pressure fuel pump and high-pressure fuel pump |
DE102014220839B4 (en) | 2014-10-15 | 2016-07-21 | Continental Automotive Gmbh | High-pressure pump for a fuel injection system of an internal combustion engine |
US11032197B2 (en) | 2016-09-15 | 2021-06-08 | Cisco Technology, Inc. | Reroute detection in segment routing data plane |
CN111997800A (en) * | 2020-08-19 | 2020-11-27 | 山东鑫亚工业股份有限公司 | Horizontal high-pressure common rail fuel feed pump for diesel engine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9209366U1 (en) * | 1992-07-11 | 1993-07-29 | Wap Reinigungssysteme Gmbh & Co, 89287 Bellenberg | Radial piston pump |
DE10313744A1 (en) * | 2003-03-27 | 2004-10-07 | Robert Bosch Gmbh | High pressure pump for a fuel injector of an internal combustion engine |
DE10228552B4 (en) * | 2002-06-26 | 2006-02-09 | Siemens Ag | Radial piston pump unit |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB879285A (en) * | 1958-06-22 | 1961-10-11 | Andrew Fraser | Improvements in and relating to radial-piston hydraulic pumps |
DE19933570A1 (en) * | 1999-07-16 | 2001-02-01 | Siemens Ag | Radial piston pump esp. for feeding fuel in injection system of combustion engine |
DE10242116B3 (en) * | 2002-09-11 | 2004-04-29 | Robert Bosch Gmbh | Drive device for a pump element, especially for hydraulic units in motor vehicle braking systems, comprises a driven shaft, an eccentric element connected to the shaft, and a roll element |
DE20313014U1 (en) * | 2003-08-21 | 2004-12-23 | Robert Bosch Gmbh | High pressure pump for a fuel injector of an internal combustion engine |
-
2006
- 2006-07-27 DE DE200610034768 patent/DE102006034768A1/en not_active Withdrawn
-
2007
- 2007-07-24 WO PCT/EP2007/057596 patent/WO2008012295A2/en active Application Filing
- 2007-07-24 DE DE502007005906T patent/DE502007005906D1/en active Active
- 2007-07-24 EP EP07787839A patent/EP2049789B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9209366U1 (en) * | 1992-07-11 | 1993-07-29 | Wap Reinigungssysteme Gmbh & Co, 89287 Bellenberg | Radial piston pump |
DE10228552B4 (en) * | 2002-06-26 | 2006-02-09 | Siemens Ag | Radial piston pump unit |
DE10313744A1 (en) * | 2003-03-27 | 2004-10-07 | Robert Bosch Gmbh | High pressure pump for a fuel injector of an internal combustion engine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20081449A1 (en) * | 2008-08-01 | 2010-02-02 | Bosch Gmbh Robert | HIGH PRESSURE COMMON RAIL PUMP WITH COMPOSED PRISMATIC RING AND FUEL SUPPLY SYSTEM FOR A COMMON RAIL ENGINE INCLUDING SUCH PUMP |
ITMI20081470A1 (en) * | 2008-08-05 | 2010-02-06 | Bosch Gmbh Robert | HIGH PRESSURE PUMP FOR FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE |
WO2010015448A1 (en) * | 2008-08-05 | 2010-02-11 | Robert Bosch Gmbh | High-pressure pump for feeding fuel to an internal combustion engine |
ITMI20090112A1 (en) * | 2009-01-30 | 2010-07-31 | Bosch Gmbh Robert | PISTON PUMP TO SUPPLY FUEL, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
Also Published As
Publication number | Publication date |
---|---|
DE502007005906D1 (en) | 2011-01-20 |
EP2049789A2 (en) | 2009-04-22 |
WO2008012295A3 (en) | 2008-03-20 |
WO2008012295A2 (en) | 2008-01-31 |
EP2049789B1 (en) | 2010-12-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE |
|
8139 | Disposal/non-payment of the annual fee |