DE102013206025A1 - High pressure pump for a fuel injection system - Google Patents
High pressure pump for a fuel injection system Download PDFInfo
- Publication number
- DE102013206025A1 DE102013206025A1 DE102013206025.4A DE102013206025A DE102013206025A1 DE 102013206025 A1 DE102013206025 A1 DE 102013206025A1 DE 102013206025 A DE102013206025 A DE 102013206025A DE 102013206025 A1 DE102013206025 A1 DE 102013206025A1
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- Germany
- Prior art keywords
- cam
- pump
- drive shaft
- pressure pump
- offset
- 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.)
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Classifications
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- 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
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- 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
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- 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
- F04B1/0408—Pistons
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- 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
- F04B1/0417—Cams consisting of two or more cylindrical elements, e.g. rollers
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- 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
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- 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
- F04B9/042—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 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)
- Reciprocating Pumps (AREA)
Abstract
Die Erfindung betrifft eine Hochdruckpumpe für ein Kraftstoffeinspritzsystem, insbesondere ein Common-Rail-Einspritzsystem, umfassend ein Pumpengehäuse (1), in dem wenigstens zwei radial um eine Antriebswelle (2) angeordnete Pumpenelemente (3, 3‘) aufgenommen sind, wobei jedes Pumpenelement (3, 3‘) einen Pumpenkolben (4, 4‘) besitzt, der mittelbar über eine Stößelbaugruppe (5, 5‘) an einem Nocken (6) der Antriebswelle (2) abgestützt ist, so dass der Pumpenkolben (4, 4‘) durch eine Rotation der Antriebswelle (2) zu einer Hubbewegung antreibbar ist. Erfindungsgemäß umfassen die Stößelbaugruppen (5, 5‘) Rollen (7, 7‘), welche in Bezug auf eine Längsachse (A) der Antriebswelle (2) axial sowie hinsichtlich ihrer Winkellagen versetzt zueinander an einer Außenumfangsfläche (8) des Nockens (6) anliegen.The invention relates to a high pressure pump for a fuel injection system, in particular a common rail injection system, comprising a pump housing (1) in which at least two pump elements (3, 3 ') arranged radially around a drive shaft (2) are accommodated, each pump element ( 3, 3 ') has a pump piston (4, 4') which is supported indirectly via a tappet assembly (5, 5 ') on a cam (6) of the drive shaft (2), so that the pump piston (4, 4') can be driven by a rotation of the drive shaft (2) for a lifting movement. According to the invention, the tappet assemblies (5, 5 ') comprise rollers (7, 7') which are axially offset with respect to a longitudinal axis (A) of the drive shaft (2) and offset with respect to one another on an outer peripheral surface (8) of the cam (6) issue.
Description
Die Erfindung betrifft eine Hochdruckpumpe für ein Kraftstoffeinspritzsystem, insbesondere ein Common-Rail-Einspritzsystem, mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a high-pressure pump for a fuel injection system, in particular a common-rail injection system, having the features of the preamble of claim 1.
Stand der TechnikState of the art
Eine Hochdruckpumpe der vorstehend genannten Art geht beispielhaft aus der Offenlegungsschrift
Um die Drehbewegung der Antriebswelle in eine Hubbewegung der Pumpenkolben der Pumpenelemente umzuwandeln, ist jeder Pumpenkolben über einen Rollenstößel an der Außenumfangsfläche des Doppelnockens abgestützt. Durch die drei nacheinander auf der Außenumfangsfläche des Doppelnockens ablaufenden Rollen der Rollenstößel wird jedoch der Verschleiß des Doppelnockens erhöht. In der Folge verkürzt sich die Lebensdauer der Hochdruckpumpe.In order to convert the rotational movement of the drive shaft in a lifting movement of the pump piston of the pump elements, each pump piston is supported via a roller tappet on the outer peripheral surface of the double cam. However, the three consecutive running on the outer peripheral surface of the double cam rollers of the roller tappet, the wear of the double cam is increased. As a result, the life of the high-pressure pump is shortened.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde eine Hochdruckpumpe der vorstehend genannten Art anzugeben, deren Lebensdauer deutlich erhöht ist.The present invention has for its object to provide a high-pressure pump of the aforementioned type, whose life is significantly increased.
Die Aufgabe wird gelöst durch eine Hochdruckpumpe mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen dieser Hochdruckpumpe sind in den Unteransprüchen angegeben.The object is achieved by a high-pressure pump having the features of claim 1. Advantageous developments of this high-pressure pump are specified in the subclaims.
Offenbarung der ErfindungDisclosure of the invention
Die vorgeschlagene Hochdruckpumpe für ein Kraftstoffeinspritzsystem, insbesondere ein Common-Rail-Einspritzsystem, umfasst ein Pumpengehäuse, in dem wenigstens zwei radial um eine Antriebswelle angeordnete Pumpenelemente aufgenommen sind. Dabei besitzt jedes Pumpenelement einen Pumpenkolben, der mittelbar über eine Stößelbaugruppe an einem Nocken der Antriebswelle abgestützt ist, so dass der Pumpenkolben durch eine Rotation der Antriebswelle zu einer Hubbewegung antreibbar ist. Erfindungsgemäß umfassen die Stößelbaugruppen Rollen, welche in Bezug auf eine Längsachse A der Antriebswelle axial sowie hinsichtlich ihrer Winkellagen versetzt zueinander an einer Außenumfangsfläche des Nockens anliegen. Durch den axialen Versatz der Rollen laufen diese nicht hintereinander, sondern axial versetzt, vorzugsweise nebeneinander, auf der Außenumfangsfläche des Nockens ab. Die Beanspruchung der Nockenaußenumfangsfläche auf Reibung sowie der damit einhergehende Verschleiß können auf diese Weise deutlich gemindert werden. Beispielsweise kann die Beanspruchung und damit der Verschleiß bei einer Hochdruckpumpe mit zwei Pumpenelementen, deren Pumpenkolben über jeweils eine Stößelbaugruppe am Nocken abgestützt sind, halbiert werden, wenn die Rollen nebeneinander statt hintereinander auf der Außenumfangsfläche des Nockens ablaufen. Das heißt, dass sich die Laufflächen der beiden Rollen nicht überlappen dürfen. Ist diese Voraussetzung gegeben, kann die Lebensdauer der Hochdruckpumpe um das Doppelte verlängert werden.The proposed high-pressure pump for a fuel injection system, in particular a common-rail injection system, comprises a pump housing, in which at least two pump elements arranged radially around a drive shaft are accommodated. In this case, each pump element has a pump piston which is indirectly supported via a plunger assembly on a cam of the drive shaft, so that the pump piston can be driven by a rotation of the drive shaft to a lifting movement. According to the invention, the plunger assemblies comprise rollers which lie axially with respect to a longitudinal axis A of the drive shaft and, with respect to their angular positions, abut each other on an outer peripheral surface of the cam. Due to the axial offset of the rollers, these do not run in succession but axially offset, preferably side by side, on the outer peripheral surface of the cam. The stress on the cam outer peripheral surface to friction and the associated wear can be significantly reduced in this way. For example, the stress and thus the wear in a high-pressure pump with two pump elements whose pump pistons are supported via a respective plunger assembly on the cam, halved when the rollers run side by side instead of one behind the other on the outer peripheral surface of the cam. This means that the running surfaces of the two rollers must not overlap. If this condition is met, the life of the high-pressure pump can be extended by twice.
Um weiterhin einen optimalen Reibkontakt der Rollen mit dem Nocken sicherzustellen, wird vorgeschlagen, dass der Nocken entsprechend dem axialen Versatz der Rollen verbreitert wird. Dies gilt es ggf. bei der Auslegung des Pumpengehäuses der Hochdruckpumpe zu berücksichtigen.To further ensure optimum frictional contact of the rollers with the cam, it is proposed that the cam be widened in accordance with the axial offset of the rollers. This may need to be considered when designing the pump housing of the high-pressure pump.
Die Anforderungen, die vorliegend hinsichtlich der Lage und Anordnung der Rollen gestellt werden, gelten analog im Hinblick auf die Lage und Anordnung der Pumpenkolben der Pumpenelemente bzw. der Pumpenelemente selbst. Denn Pumpenkolben und Stößelbaugruppen sind in der Regel koaxial in Bezug auf eine Längsachse des Pumpenelementes angeordnet, um eine optimale Kraftübertragung zu bewirken. Sofern daher vorliegend vom axialen Versatz oder Winkelabstand der Rollen zueinander die Rede ist, trifft dies entsprechend auf den axialen Versatz oder Winkelabstand der Pumpenkolben bzw. der Pumpenelemente zueinander zu.The requirements that are made in this case with regard to the position and arrangement of the rollers, apply analogously with regard to the position and arrangement of the pump piston of the pump elements and the pump elements themselves. Because pump piston and plunger assemblies are generally coaxial with respect to a longitudinal axis of the pump element arranged to effect optimum power transmission. Therefore, in the present case of the axial offset or angular distance of the rollers to each other is mentioned, this applies accordingly to the axial offset or angular distance of the pump piston or the pump elements to each other.
Gemäß einer bevorzugten Ausführungsform der Erfindung beträgt der axiale Versatz der Rollen zueinander jeweils wenigstens eine Rollenbreite. Auf diese Weise ist sichergestellt, dass sich die Laufflächen der Rollen nicht überlappen, sondern nebeneinander, ggf. in einem Abstand zueinander zu liegen kommen. Dadurch, dass sich die Laufflächen der Rollen nicht überlappen, kann die Beanspruchung und damit der Verschleiß im Bereich der Nockenaußenumfangsfläche auf ein Minimum reduziert werden.According to a preferred embodiment of the invention, the axial offset of the rollers relative to one another in each case at least one roller width. In this way it is ensured that the running surfaces of the rollers do not overlap, but next to each other, possibly come to lie at a distance to each other. The fact that the running surfaces of the rollers do not overlap, the stress and thus the wear in the area of the cam outer peripheral surface can be reduced to a minimum.
Die Außenumfangsfläche des Nockens besitzt bevorzugt eine Breite, die gleich der Summe der Breiten der Rollen oder größer als die Summe der Breiten der Rollen ist. Bei entsprechender Ausbildung des Nockens können die Rollen über ihre gesamte Breite am Nocken abgestützt werden, ohne dass sich ihre Laufflächen überschneiden. Dadurch ist nicht nur eine Reduzierung des Verschleißes im Bereich der Nockenaußenumfangsfläche, sondern ferner eine optimale Abstützung der Rollen sichergestellt.The outer peripheral surface of the cam preferably has a width equal to the sum of the widths of the rollers or greater than the sum of the Width of the rolls is. With appropriate design of the cam, the rollers can be supported over their entire width on the cam, without overlap their treads. As a result, not only a reduction of wear in the area of the cam outer peripheral surface, but also an optimal support of the rollers is ensured.
Wie bereits erwähnt, liegen die Rollen der mehreren Stößelbaugruppen auch im Hinblick auf ihre Winkellagen versetzt zueinander. Der Winkelversatz α kann dabei 60°, 90° oder 120° betragen. Der optimale Winkelversatz hängt unter anderem von der konkreten Ausbildung des Nockens und/oder der Anzahl der Pumpenelemente und damit der am Nocken abzustützenden Pumpenkolben ab. Der Winkelversatz ermöglicht, die Pumpenkolben der mehreren Pumpenelemente derart in einer Hubbewegung anzutreiben, dass sie jeweils zeitlich versetzt ihren oberen Totpunkt erreichen.As already mentioned, the rollers of the plurality of ram assemblies are also offset with respect to their angular positions. The angular offset α can be 60 °, 90 ° or 120 °. The optimum angular offset depends, inter alia, on the specific design of the cam and / or the number of pump elements and thus the pump piston to be supported on the cam. The angular offset makes it possible to drive the pump pistons of the plurality of pump elements in a lifting movement such that they each reach their top dead center with a time offset.
Beispielsweise kann der Nocken als Doppelnocken ausgebildet sein, der zwei um 180° versetzt zueinander angeordnete Vorsprünge besitzt. An einem solchen Doppelnocken Nocken sind vorzugsweise zwei Pumpenkolben über jeweils eine Stößelbaugruppe abgestützt, deren Rollen um 90° versetzt sowie in unterschiedlichen Radialebenen liegen. Bei entsprechender Anordnung der beiden Pumpenelemente bewirkt der Doppelnocken eine gegenläufige Bewegung der Pumpenkolben der beiden Pumpenelemente. D. h., dass der eine Pumpenkolben einen Förderhub und der andere Pumpenkolben einen Saughub ausführen. Mit nur einem Nocken kann auf diese Weise die Förderleistung der Hochdruckpumpe erhöht werden.For example, the cam may be formed as a double cam having two offset by 180 ° to each other arranged projections. On such a double cam cam preferably two pump pistons are supported via a respective plunger assembly whose roles offset by 90 ° and lie in different radial planes. With an appropriate arrangement of the two pump elements of the double cam causes an opposite movement of the pump piston of the two pump elements. This means that one pump piston performs a delivery stroke and the other pump piston performs a suction stroke. With only one cam can be increased in this way the delivery of the high-pressure pump.
Um mit einem Nocken, insbesondere Doppelnocken, mehrere axial versetzt zueinander bzw. in unterschiedlichen Radialebenen angeordnete Pumpenelemente anzutreiben, wird der Nocken vorzugsweise breiter ausgeführt. Alternativ hierzu kann der Nocken jedoch auch mehrteilig, insbesondere zweiteilig, ausgebildet sein. Die mehreren Teile des Nockens sind dann axial versetzt zueinander, insbesondere nebeneinander, jedoch in gleicher Winkellage auf der Antriebswelle angeordnet.In order to drive with a cam, in particular double cams, a plurality of axially offset from each other or arranged in different radial planes pump elements, the cam is preferably made wider. Alternatively, however, the cam can also be designed in several parts, in particular in two parts. The several parts of the cam are then axially offset from each other, in particular next to each other, but arranged in the same angular position on the drive shaft.
Gemäß einer besonders bevorzugten Ausführungsform der Erfindung sind im Pumpengehäuse wenigstens zwei Pumpenelemente aufgenommen, die in unterschiedlichen radialen Ebenen und in versetzter Winkellage angeordnet sind. Eine solche Hochdruckpumpe eignet sich insbesondere für den Einsatz in Common-Rail-Einspritzsystemen.According to a particularly preferred embodiment of the invention, at least two pump elements are accommodated in the pump housing, which are arranged in different radial planes and in an offset angular position. Such a high pressure pump is particularly suitable for use in common rail injection systems.
Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend anhand der beigefügten Zeichnungen näher erläutert. Diese zeigen:A preferred embodiment of the invention will be explained in more detail with reference to the accompanying drawings. These show:
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings
Die in
Jedes Pumpenelement
Der Nocken
Die Anordnung der beiden Pumpenelemente
Die hohe Lebensdauer der erfindungsgemäßen Hochdruckpumpe verspricht lange Laufzeiten, so dass sie nicht nur für den Einsatz in Personenkraftwagen, sondern ferner für den Einsatz in Nutz- und Lastkraftwagen geeignet ist.The long service life of the high-pressure pump according to the invention promises long running times, so that it is suitable not only for use in passenger cars, but also for use in commercial vehicles and trucks.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102009026735 A1 [0002] DE 102009026735 A1 [0002]
Claims (7)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013206025.4A DE102013206025A1 (en) | 2013-03-07 | 2013-04-05 | High pressure pump for a fuel injection system |
CN201480012852.0A CN105026753B (en) | 2013-03-07 | 2014-01-30 | For the high-pressure pump of fuel injection system |
EP14702011.9A EP2964954B1 (en) | 2013-03-07 | 2014-01-30 | High-pressure pump for a fuel injection system |
PCT/EP2014/051767 WO2014135313A1 (en) | 2013-03-07 | 2014-01-30 | High-pressure pump for a fuel injection system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102013203874.7 | 2013-03-07 | ||
DE102013203874 | 2013-03-07 | ||
DE102013206025.4A DE102013206025A1 (en) | 2013-03-07 | 2013-04-05 | High pressure pump for a fuel injection system |
Publications (1)
Publication Number | Publication Date |
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DE102013206025A1 true DE102013206025A1 (en) | 2014-09-11 |
Family
ID=51385619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102013206025.4A Withdrawn DE102013206025A1 (en) | 2013-03-07 | 2013-04-05 | High pressure pump for a fuel injection system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2964954B1 (en) |
CN (1) | CN105026753B (en) |
DE (1) | DE102013206025A1 (en) |
WO (1) | WO2014135313A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014225982A1 (en) | 2014-12-16 | 2016-06-16 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2570154A (en) * | 2018-01-15 | 2019-07-17 | Delphi Tech Ip Ltd | High pressure diesel fuel pump |
DE102019208179A1 (en) * | 2019-06-05 | 2020-12-10 | Robert Bosch Gmbh | Pump, especially high pressure fuel pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009026735A1 (en) | 2009-06-04 | 2010-12-09 | Robert Bosch Gmbh | High-pressure pump e.g. high pressure storage fuel-lubricated radial piston pump, for common rail system of internal-combustion engine, has gear for converting rotating movement of shaft over cam, where cam is formed as double cam |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10356262A1 (en) * | 2003-12-03 | 2005-06-30 | Robert Bosch Gmbh | Radial piston pump, in particular for fuel injection systems |
DE102008042881A1 (en) * | 2008-10-16 | 2010-04-22 | Robert Bosch Gmbh | High-pressure pump arrangement for common rail injection system of internal-combustion engine of motor vehicle, has eccentric cam adjustably arranged along axis perpendicular to shaft longitudinal axis |
DE102009001315A1 (en) * | 2009-03-04 | 2010-09-09 | Robert Bosch Gmbh | Piston pump for use as high-pressure pump for internal-combustion engine in motor vehicle, has piston displacable in cylinder by cam shaft against force of coil spring, where coil spring has winding direction opposite to another coil spring |
DE102010030852A1 (en) * | 2010-07-02 | 2012-01-05 | Robert Bosch Gmbh | High pressure pump for common rail injection system utilized in vehicle for direct injection of fuel i.e. petrol, has pump piston whose axial hole comprises radial bore for connection with low pressure chamber and displacement chamber |
DE102010039269A1 (en) * | 2010-08-12 | 2012-02-16 | Robert Bosch Gmbh | Piston pumps for a hydraulic vehicle brake system |
DE102011007686A1 (en) * | 2011-04-19 | 2012-10-25 | Robert Bosch Gmbh | Fuel delivery device for a fuel injection device of an internal combustion engine |
-
2013
- 2013-04-05 DE DE102013206025.4A patent/DE102013206025A1/en not_active Withdrawn
-
2014
- 2014-01-30 EP EP14702011.9A patent/EP2964954B1/en active Active
- 2014-01-30 CN CN201480012852.0A patent/CN105026753B/en active Active
- 2014-01-30 WO PCT/EP2014/051767 patent/WO2014135313A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009026735A1 (en) | 2009-06-04 | 2010-12-09 | Robert Bosch Gmbh | High-pressure pump e.g. high pressure storage fuel-lubricated radial piston pump, for common rail system of internal-combustion engine, has gear for converting rotating movement of shaft over cam, where cam is formed as double cam |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014225982A1 (en) | 2014-12-16 | 2016-06-16 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
WO2016096216A1 (en) * | 2014-12-16 | 2016-06-23 | Robert Bosch Gmbh | Pump, in particular a high-pressure fuel pump |
US10125749B2 (en) | 2014-12-16 | 2018-11-13 | Robert Bosch Gmbh | Pump, in particular a high-pressure fuel pump |
Also Published As
Publication number | Publication date |
---|---|
CN105026753B (en) | 2018-06-05 |
CN105026753A (en) | 2015-11-04 |
EP2964954A1 (en) | 2016-01-13 |
WO2014135313A1 (en) | 2014-09-12 |
EP2964954B1 (en) | 2019-05-01 |
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