DE10356262A1 - Radial piston pump, in particular for fuel injection systems - Google Patents
Radial piston pump, in particular for fuel injection systems Download PDFInfo
- Publication number
- DE10356262A1 DE10356262A1 DE2003156262 DE10356262A DE10356262A1 DE 10356262 A1 DE10356262 A1 DE 10356262A1 DE 2003156262 DE2003156262 DE 2003156262 DE 10356262 A DE10356262 A DE 10356262A DE 10356262 A1 DE10356262 A1 DE 10356262A1
- Authority
- DE
- Germany
- Prior art keywords
- radial piston
- piston pump
- camshaft
- pump according
- drive shaft
- 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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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
- 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
- F04B1/043—Hydraulic arrangements
-
- 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
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
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
Es wird eine Radialkolbenpumpe mit mindestens zwei Pumpenelementen vorgeschlagen, bei der die Stößel 23 und 24 nicht nur durch eine Feder 19 in Anlage an einer Nockenwelle 2 gehalten werden, sondern zusätzlich hydraulisch unterstützt in Anlage an der Nockenwelle 2 gehalten werden.It is proposed a radial piston pump with at least two pump elements, in which the plunger 23 and 24 are held not only by a spring 19 in contact with a camshaft 2, but additionally supported hydraulically supported in the camshaft 2.
Description
Die Erfindung betrifft eine Radialkolbenpumpe zur Kraftstoffhochdruckerzeugung bei Kraftstoffeinspritzsystemen von Brennkraftmaschinen, insbesondere bei einem Common-Rail-Einspritzsystem, mit einer in einem Pumpengehäuse gelagerten Antriebswelle, die mindestens zwei bezüglich der Antriebswelle radial in einer jeweiligen Elementbohrung angeordnete Kolben abstützen, die durch Drehen der Antriebswelle in der jeweiligen Elementbohrung in radialer Richtung hin und her bewegbar sind, mit je einem zwischen den Kolben und der Antriebswelle angeordneten und im Pumpengehäuse geführten Stößel.The The invention relates to a radial piston pump for fuel high pressure generation in fuel injection systems of internal combustion engines, in particular in a common rail injection system, with one mounted in a pump housing Drive shaft, the at least two radial with respect to the drive shaft supported in a respective element bore arranged piston, the by turning the drive shaft in the respective element bore in the radial direction are movable back and forth, with one between arranged the piston and the drive shaft and guided in the pump housing plunger.
Eine
solche Radialkolbenpumpe ist zum Beispiel aus der
In einem Triebwerksraum des Pumpengehäuses, welcher die Antriebswelle oder Nockenwelle aufnimmt, ist Kraftstoff zur Schmierung und Kühlung der Radialkolbenpumpe vorhanden. Dieser Kraftstoff, wird wegen der o. g. Volumenänderungen der Stößelräume periodisch durch die in den Stößeln vorhandenen Ausgleichsbohrungen und Ausgleichsnuten in die Stößelräume angesaugt und anschließend wieder ausgeschoben. Dabei treten erhebliche Strömungs- und Energieverluste auf, welche unerwünscht sind und unter anderem dazu führen können, dass die Stößel während der Bewegung des Kolbens vom oberen Totpunkt zum unteren Totpunkt von der Nockenwelle abhebt. Dies ist aus zwei Gründen sehr schädlich für die Radialkolbenpumpe: Erstens wird das Ansaugen von Kraftstoff in den Förderraum des zugehörigen Pumpenelements verhindert und zweitens kann das anschließende Aufprallen des Stößels auf die Antriebswelle oder Nockenwelle zu Schäden an Kolben, Stößel, Rolle und/oder Antriebswelle oder Nockenwelle führen.In an engine room of the pump housing, which the drive shaft or camshaft, is fuel for lubrication and cooling of Radial piston pump available. This fuel is due to the o. G. volume changes the plunger rooms periodically through the existing in the pestles Suction holes and compensation grooves sucked into the plunger chambers and then again ejected. There are considerable flow and energy losses on which undesirable are and among others lead to can, that the rams during the Movement of the piston from top dead center to bottom dead center of the camshaft lifts. This is very damaging to the radial piston pump for two reasons: First, the suction of fuel into the delivery chamber of the associated Secondly, the subsequent bouncing can prevent pumping element of the plunger the drive shaft or camshaft damage the piston, plunger, roller and / or drive shaft or camshaft.
Der Erfindung liegt die Aufgabe zugrunde, eine Radialkolbenpumpe mit mehr als einem Pumpenelement so weiterzubilden, dass die aus den Volumenänderungen der Stößelräume resultierenden Verluste minimiert, die Beanspruchung der Radialkolbenpumpe verringert und die zulässige Höchstdrehzahl der Radialkolbenpumpe erhöht wird.Of the Invention is the object of a radial piston pump with educate more than one pump element so that from the volume changes the ram spaces resulting losses minimized, reduces the load on the radial piston pump and the permissible Maximum speed the radial piston pump increases becomes.
Diese Aufgabe wird erfindungsgemäß bei einer Radialkolbenpumpe zur Kraftstoffhochdruckerzeugung bei Kraftstoffeinspritzsystemen von Brennkraftmaschinen, insbesondere bei einem Common-Rail-Einspritzsystem, mit einer in einem Pumpengehäuse gelagerten Antriebswelle, die mindestens zwei bezüglich der Antriebswelle radial in einer jeweiligen Elementbohrung angeordnete Kolben abstützen, die durch Drehen der Antriebswelle in der jeweiligen Elementbohrung in radialer Richtung hin und her bewegbar sind, mit einem zwischen dem Kolben der Nockenwelle angeordneten und im Pumpengehäuse geführten Stößel dadurch gelöst, dass die von den Stößeln und dem Pumpengehäuse begrenzten Stößelräume zusätzlich hydraulisch miteinander in Verbindung stehen.These Task is according to the invention in a Radial piston pump for fuel high pressure generation in fuel injection systems of internal combustion engines, in particular in a common rail injection system, with one in a pump housing stored drive shaft, the at least two with respect to the Drive shaft arranged radially in a respective element bore Support the piston, by turning the drive shaft in the respective element bore in the radial direction are movable back and forth, with an intermediate arranged the piston of the camshaft and guided in the pump housing plunger thereby solved, that from the pestles and the pump housing limited ram spaces additionally hydraulic communicate with each other.
Vorteile der ErfindungAdvantages of invention
Da die Pumpenelemente einer Radialkolbenpumpe versetzt zueinander angeordnet sind, finden die Volumenänderungen der Stößelräume phasenverschoben statt. Durch die erfindungsgemäße hydraulische Verbindung zwischen den Stößelräumen kann der in den Stößelräumen befindliche Kraftstoff von einem Stößelraum in den anderen verschoben werden, so dass die aus den Volumenänderungen der Stößelräume resultierenden Verluste (Strömungswiderstände) minimiert werden. Dies kommt dem Antriebsleistungsbedarf der erfindungsgemäßen Radialkolbenpumpe positiv zugute. Außerdem unterstützt der Kraftstoff, welcher aus einem Stößelraum mit abnehmendem Volumen in einen Stößelraum mit zunehmendem Volumen verschoben wird, die Funktion der Feder, welche den Stößel in Anlage an der Antriebswelle halten soll. In anderen Worten: Bei gleich dimensionierter Feder kann eine höhere Maximaldrehzahl der Radialkolbenpumpe erreicht werden oder die Feder kann kleiner dimensioniert werden. Eine kleinere Feder wirkt sich positiv auf den Bauraumbedarf und die bewegten Massen aus.There the pump elements of a radial piston pump offset from one another are, find the volume changes the ram spaces out of phase instead of. By the inventive hydraulic Connection between the ram spaces can the one located in the ram spaces Fuel from a pestle room be shifted in the other, so that from the volume changes of the Tappet spaces resulting Losses (flow resistance) minimized become. This comes the drive power requirement of the radial piston pump according to the invention positive benefits. In addition, the support Fuel, which from a ram space with decreasing volume in a ram space with increasing volume is shifted, the function of the spring which the ram in abutment should hold the drive shaft. In other words, with the same dimensions Spring can have a higher maximum speed the radial piston pump can be reached or the spring can be smaller be dimensioned. A smaller spring has a positive effect the space requirement and the moving masses.
Dadurch dass die erfindungsgemäße hydraulische Verbindung zwischen den Stößelräumen keine Auswirkungen auf den Hochdruckbereich der Radialkolbenpumpe hat, kann diese hydraulische Verbindung leicht an bestehenden Radialkolbenpumpen nachgerüstet werden, ohne dass hohe Kosten entstünden oder eine erneute Applikation der Radialkolbenpumpe an das Kraftstoffeinspritzsystem beziehungsweise die zugehörige Brennkraftmaschine erforderlich wäre.Thereby that the inventive hydraulic Connection between the ram spaces None Has an impact on the high pressure area of the radial piston pump, This hydraulic connection can easily be attached to existing radial piston pumps retrofitted without high costs or re-application the radial piston pump to the fuel injection system or the associated Internal combustion engine would be required.
Eine besonders vorteilhafte Variante der Erfindung sieht vor, dass im Pumpengehäuse mindestens eine Verbindungsbohrung vorgesehen ist und dass die mindestens eine Verbindungsbohrung zwei Stößelräume hydraulisch miteinander verbindet. Bei dieser Variante ist es lediglich erforderlich, eine Verbindungsbohrung zusätzlich in das Pumpengehäuse anzubringen, so dass zwei benachbarte Stößelräume hydraulisch miteinander verbunden sind. Diese Maßnahme kann bisweilen auch an bereits in Serie gefertigten Pumpengehäusen vorgenommen werden, so dass eine Nachrüstung bereits in Serie befindlicher Radialkolbenpumpen mit der erfindungsgemäßen hydraulischen Verbindungsbohrung in manchen Fällen möglich ist.A particularly advantageous variant of the invention provides that at least one connecting bore is provided in the pump housing and that the at least one connecting bore hydraulically connects two plunger chambers together. In this variant, it is only necessary, a connection hole in addition to the pump housing be mounted so that two adjacent plunger chambers are hydraulically connected to each other. This measure can sometimes be carried out on already manufactured in series pump housings, so that retrofitting already in series befindlicher radial piston pumps with the hydraulic connection bore according to the invention in some cases is possible.
Alternativ können auch zwei Stößelräume durch eine externe Verbindungsleitung hydraulisch verbunden werden. Diese Variante empfiehlt sich dann, wenn aus konstruktiven oder sonstigen Gründen eine Verbindungsbohrung im Pumpengehäuse nicht untergebracht werden kann.alternative can also two plunger rooms through an external connecting line to be hydraulically connected. These Variant is recommended when constructive or otherwise establish a connection hole in the pump housing will not be accommodated can.
Die Funktion der erfindungsgemäßen Radialkolbenpumpe kann weiter verbessert werden, wenn die ohnehin vorhandene Versorgung der Antriebswelle mit Kraftstoff zur Kühlung und Schmierung in die hydraulische Verbindung zwischen zwei Stößelräumen mündet, da in diesem Fall eine definierte Menge von Schmierstoff zu Schmier- und Kühlzwecken den Stößeln und den Stößelräumen zugeführt werden kann. Dadurch steigt die Belastbarkeit der erfindungsgemäßen Radialkolbenpumpe, ohne zusätzlichen Herstellungs- oder Fertigungsaufwand.The Function of the radial piston pump according to the invention can be further improved if the already existing supply the drive shaft with fuel for cooling and lubrication in the hydraulic connection between two plunger chambers opens, as in this case a defined amount of lubricant for lubrication and cooling purposes the pestles and be fed to the ram spaces can. This increases the load capacity of the radial piston pump according to the invention, without additional Manufacturing or production costs.
Damit die Unterstützung der auf die Stößel wirkenden Federn durch die hydraulische Verbindung zwischen zwei Stößelräumen durch die Schmierstoffversorgung nicht beeinträchtigt wird, empfiehlt es sich weiter, dass in den Stößeln Ausgleichsbohrungen und/oder Ausgleichsnuten vorhanden sind, welche eine hydraulische Verbindung zwischen dem zugehörigen Stößelraum und dem Triebwerksraum herstellen. Dabei ist darauf zu achten, dass die Strömungswiderstände dieser Ausgleichsbohrungen und/oder Ausgleichsnut bezüglich ihres Durchmessers und ihrer Lage so mit der Drossel in der Schmierstoffversorgung abgestimmt sind, dass die Federn wirkungsvoll hydraulisch unterstützt werden.In order to support the one acting on the pestles Springs through the hydraulic connection between two ram spaces the lubricant supply is not affected, it is recommended further, that in the rams compensation holes and / or Ausgleichsnuten are present, which is a hydraulic Connection between the associated driving spaces and the engine room. It is important to ensure that the flow resistance of these Compensation holes and / or compensation groove with respect to their diameter and their position so matched with the throttle in the lubricant supply are that the springs are effectively hydraulically assisted.
Um die Menge des den Stößelräumen und dem Triebwerksraum zufließenden Kraftstoffs einstellen zu können, ist in der Schmierstoffversorgung eine erste Drossel vorgesehen. Dadurch kann die Menge des für die Stößel und die Nockenwelle zur Verfügung stehenden Schmierstoffs begrenzt werden.Around the amount of the ram spaces and the Engine room inflowing To be able to adjust the fuel is provided in the lubricant supply a first throttle. This can reduce the amount of the pestles and the camshaft available limited lubricant.
Bei der erfindungsgemäßen Radialkolbenpumpe kann die Antriebswelle als Nockenwelle oder als Exzenterwelle ausgebildet sein. Ebenso ist es möglich, die Stößel mit einer Rolle zu versehen, welche auf der Nockenwelle abrollen, so dass die Reibungskräfte zwischen Stößel und Nockenwelle reduziert werden.at the radial piston pump according to the invention can the drive shaft designed as a camshaft or as an eccentric shaft be. It is also possible the plunger with to provide a roll which roll on the camshaft so that the friction forces between pestle and Camshaft can be reduced.
Wenn der in den Triebwerksraum des Pumpengehäuses gelangende Schmierstoff auch eine oder beide Lagerungen der Nockenwelle im Pumpengehäuse durchströmt, kann es in manchen Betriebszuständen, beispielsweise beim Kaltstart der Brennkraftmaschine, dazu kommen, dass zu wenig Schmierstoff durch die Stößel und/oder den Triebwerksraum und das/die Lager der Nockenwelle strömt. Um diesem unerwünschten Zustand abzuhelfen, kann parallel zu dem Lager/den Lagern der Nockenwelle im Pumpengehäuse eine Bypassdrossel vorgesehen sein.If the lubricant entering the engine room of the pump housing also one or both bearings of the camshaft flows through the pump housing, can it in some operating states, For example, when cold starting the engine, come to that too little lubricant through the plunger and / or the engine room and the bearing (s) of the camshaft flows. To this undesirable Condition can be parallel to the bearing / bearings of the camshaft in the pump housing a bypass throttle may be provided.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung mehrere Ausführungsbeispiele der Erfindung im Einzelnen beschrieben sind. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further Advantages, features and details of the invention will become apparent the following description, with reference to the drawing several embodiments the invention are described in detail. The can in the claims and mentioned in the description Features individually for each itself or in any combination essential to the invention.
In der Zeichnung zeigt:In the drawing shows:
Zeichnungendrawings
Beschreibung der Ausführungsbeispieledescription the embodiments
Die
Die
in
An
dem zu der Nockenwelle
Die
in
Die
Stößel
In
der in
Um
den Strömungswiderstand
zu verringern, sind in die Böden
Allerdings
ist diese Lösung
nicht vollständig zufriedenstellend,
da der Strömungswiderstand
nach wie vor erheblich sein kann und infolgedessen die Stößel
In
Auch
bei diesem Ausführungsbeispiel
ist, um die Reibung zwischen den Stößeln
Wegen
des Winkels von 90° zwischen
den Kolben
Bei
dem Ausführungsbeispiel
gemäß
Bei
diesem Ausführungsbeispiel
findet die Schmierung der Nockenwelle
Bei
dem Ausführungsbeispiel
gemäß
Von
der Versorgungsleitung
Bei
dem Ausführungsbeispiel
gemäß
Anschließend strömt der im
Triebwerksraum
In
der Schmierstoffversorgung
In
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003156262 DE10356262A1 (en) | 2003-12-03 | 2003-12-03 | Radial piston pump, in particular for fuel injection systems |
PCT/DE2004/002323 WO2005054675A1 (en) | 2003-12-03 | 2004-10-20 | Radial-piston pump, in particular for fuel-injection systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003156262 DE10356262A1 (en) | 2003-12-03 | 2003-12-03 | Radial piston pump, in particular for fuel injection systems |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10356262A1 true DE10356262A1 (en) | 2005-06-30 |
Family
ID=34625478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003156262 Withdrawn DE10356262A1 (en) | 2003-12-03 | 2003-12-03 | Radial piston pump, in particular for fuel injection systems |
Country Status (2)
Country | Link |
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DE (1) | DE10356262A1 (en) |
WO (1) | WO2005054675A1 (en) |
Cited By (34)
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DE102007032218A1 (en) | 2007-07-11 | 2009-01-15 | Robert Bosch Gmbh | Radial piston pump for high fuel-pressure production in e.g. common rail injection system of internal combustion engine, has cam follower, where radial clearance between cam follower and guide boring is position- and orientation-dependent |
DE102007034036A1 (en) | 2007-07-20 | 2009-01-22 | Robert Bosch Gmbh | High-pressure fuel pump with roller tappet |
DE102009000766A1 (en) | 2009-02-11 | 2010-08-12 | Robert Bosch Gmbh | Radial piston pump for use in internal combustion engine, has recess for receiving roller provided at end of plunger turned towards drive shaft, and guide body comprising borehole or elongated hole along center axis of roller |
DE102009002124A1 (en) | 2009-04-02 | 2010-10-14 | Robert Bosch Gmbh | High-pressure pump i.e. radial piston pump, for fuel injection device of internal-combustion engine, has suction cam that transmits power from drive shaft to pump piston in intake stroke |
WO2010130498A1 (en) * | 2009-05-14 | 2010-11-18 | Robert Bosch Gmbh | High-pressure fuel pump |
DE102009003254A1 (en) | 2009-05-20 | 2010-11-25 | Robert Bosch Gmbh | Fuel injection system i.e. common rail fuel injection system, for internal-combustion engine of motor vehicle, has prefeed pump for conveying fuel from tank to interior part of fuel high-pressure pump that is designed as plug-in pump |
DE102009026610A1 (en) | 2009-05-29 | 2010-12-02 | Robert Bosch Gmbh | High-pressure pump for high pressure injection system for internal combustion engine, particularly for motor vehicle, has parallel axle that is aligned parallel to central longitudinal axis |
DE102009026596A1 (en) | 2009-05-29 | 2010-12-02 | Robert Bosch Gmbh | High-pressure pump for high pressure injection system for internal combustion engine, particularly for motor vehicle, has drive shaft with cam, piston and cylinder |
DE102009026603A1 (en) | 2009-05-29 | 2010-12-02 | Robert Bosch Gmbh | High-pressure pump for use in combustion engine of motor vehicle for conveying e.g. diesel, has piston indirectly or directly supported on cam, so that translational movement is executable by piston due to rotation of drive shaft |
DE102009027156A1 (en) | 2009-06-24 | 2010-12-30 | Robert Bosch Gmbh | High pressure pump for conveying e.g. diesel in car, has piston supported by cam roller, where different rolling friction coefficients are developed at roller-rolling surface and shaft-rolling surface partially made of steel |
DE102011003678A1 (en) | 2011-02-07 | 2012-08-09 | Robert Bosch Gmbh | high pressure pump |
DE102011076063A1 (en) | 2011-05-18 | 2012-11-22 | Robert Bosch Gmbh | System for conveying a fluid |
DE102011076060A1 (en) | 2011-05-18 | 2012-11-22 | Robert Bosch Gmbh | System for supplying fluid, particularly fuel e.g. diesel for motor vehicle for use in high pressure injection system of internal combustion engine, has high pressure pump, feed pump and unit for controlling flow rate |
DE102011076057A1 (en) | 2011-05-18 | 2012-11-22 | Robert Bosch Gmbh | Method for operating common-rail injection system for injecting e.g. petrol into combustion chamber of petrol engine of motor car, involves conveying fuel from feed pump to high pressure rail before starting of engine |
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DE102012208187A1 (en) | 2012-05-16 | 2013-11-21 | Robert Bosch Gmbh | High pressure pump for use in high pressure injection system for conveying diesel to combustion engine of motor car, has drive shaft connected to cam and forming cavity with different diameter in direction of longitudinal axis of shaft |
DE102012211395A1 (en) | 2012-07-02 | 2014-01-02 | Robert Bosch Gmbh | Metering unit for high pressure pump of high pressure injection system for internal combustion engine of motor vehicle, has valve piston bearing made of plastic, and unit for redirecting magnetic field or flux generated by electromagnet |
DE102012212153A1 (en) | 2012-07-11 | 2014-01-16 | Robert Bosch Gmbh | high pressure pump |
DE102012212154A1 (en) | 2012-07-11 | 2014-01-16 | Robert Bosch Gmbh | High pressure pump for conveying fluid e.g. diesel, in common-rail-injection system of diesel engine of motor vehicle, has shaft comprising recess such that channel discharging fluid from lubricating area is formed between shaft and bearing |
DE102012211996A1 (en) | 2012-07-10 | 2014-01-16 | Robert Bosch Gmbh | Metering unit for high-pressure pump, is formed with two valve elements, where metering case has two outlet openings for each valve element, and two valve elements are hydraulically separated |
DE102012220851A1 (en) | 2012-11-15 | 2014-06-12 | Robert Bosch Gmbh | High pressure pump for hybrid hydraulic system of combustion engine system for motor car, has auxiliary cylinder for supporting auxiliary piston which is provided for conveying the hydraulic fluid |
WO2014135313A1 (en) * | 2013-03-07 | 2014-09-12 | Robert Bosch Gmbh | High-pressure pump for a fuel injection system |
DE102013211755A1 (en) | 2013-06-21 | 2014-12-24 | Robert Bosch Gmbh | high pressure pump |
WO2015043635A1 (en) | 2013-09-26 | 2015-04-02 | Robert Bosch Gmbh | Metering unit |
WO2015197051A1 (en) | 2014-06-26 | 2015-12-30 | Ksm Castings Group Gmbh | Method for producing a core to be used for forming a cavity in a cast housing of a high-pressure pump |
WO2016165985A1 (en) * | 2015-04-13 | 2016-10-20 | Delphi International Operations Luxembourg S.À R.L. | High pressure diesel fuel pumps |
DE102015220204A1 (en) | 2015-10-16 | 2017-04-20 | Robert Bosch Gmbh | high pressure pump |
DE102015220870A1 (en) | 2015-10-26 | 2017-04-27 | Robert Bosch Gmbh | high pressure pump |
DE102015225960A1 (en) | 2015-12-18 | 2017-06-22 | Robert Bosch Gmbh | high pressure pump |
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ITMI20072259A1 (en) * | 2007-11-30 | 2009-06-01 | Bosch Gmbh Robert | HIGH PRESSURE PUMP |
IT1391090B1 (en) * | 2008-07-14 | 2011-11-18 | Bosch Gmbh Robert | METHOD AND LUBRICATION CIRCUIT FOR A HIGH PRESSURE PUMP FOR FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE AND FUEL SUPPLY SYSTEM INCLUDING SUCH CIRCUIT |
DE102011007352A1 (en) * | 2011-04-14 | 2012-10-18 | Robert Bosch Gmbh | High-pressure fuel pump for a fuel injection system of an internal combustion engine |
ES2526599T3 (en) * | 2012-03-12 | 2015-01-13 | Delphi International Operations Luxembourg S.À R.L. | Fuel pump assembly |
CN107100772B (en) * | 2017-06-15 | 2019-04-23 | 西安交通大学 | A kind of servo motor pump of car combustion engine high pressure co-rail system |
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GB9815272D0 (en) * | 1998-07-14 | 1998-09-09 | Lucas Ind Plc | Positive displacement pumps |
GB9903115D0 (en) * | 1999-02-11 | 1999-04-07 | Lucas Ind Plc | Multi-chamber positive displacement pump |
DE19907311A1 (en) * | 1999-02-22 | 2000-08-31 | Bosch Gmbh Robert | Hydraulic pump unit |
GB2366336A (en) * | 2000-08-31 | 2002-03-06 | Delphi Tech Inc | Fuel pump |
-
2003
- 2003-12-03 DE DE2003156262 patent/DE10356262A1/en not_active Withdrawn
-
2004
- 2004-10-20 WO PCT/DE2004/002323 patent/WO2005054675A1/en active Application Filing
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DE102009026610A1 (en) | 2009-05-29 | 2010-12-02 | Robert Bosch Gmbh | High-pressure pump for high pressure injection system for internal combustion engine, particularly for motor vehicle, has parallel axle that is aligned parallel to central longitudinal axis |
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