WO2009121823A1 - Système de pompe de transport de fluide - Google Patents

Système de pompe de transport de fluide Download PDF

Info

Publication number
WO2009121823A1
WO2009121823A1 PCT/EP2009/053706 EP2009053706W WO2009121823A1 WO 2009121823 A1 WO2009121823 A1 WO 2009121823A1 EP 2009053706 W EP2009053706 W EP 2009053706W WO 2009121823 A1 WO2009121823 A1 WO 2009121823A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
fluid
crank
bearing
pressure
Prior art date
Application number
PCT/EP2009/053706
Other languages
German (de)
English (en)
Inventor
Uwe Nigrin
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2009121823A1 publication Critical patent/WO2009121823A1/fr

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
    • 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/0265—Pumps feeding common rails
    • 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
    • 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

Definitions

  • the invention relates to a pump arrangement for conveying a fluid.
  • Fuel injection systems of internal combustion engines have a near-engine high-pressure accumulator or a storage line from which or from the individual
  • Fuel injection valves are fed. These high-pressure accumulators are often referred to as common rail.
  • the injection systems for internal combustion engines usually have various pumps through which fuel is conveyed to be introduced into combustion chambers of the internal combustion engine.
  • the pumps should be able to provide the necessary volume flow and the required fluid pressure precisely and are exposed to mechanical loads.
  • a pump assembly for delivering a fluid includes a pump configured to deliver fluid from a fluid tank.
  • the pump arrangement comprises a further pump which is hydraulically arranged downstream of the first pump.
  • the further pump has a housing with a crank chamber.
  • a drive shaft is arranged in the crankcase.
  • the drive shaft is mounted in the crankcase by a crank bearing and another crank bearing.
  • the output side of the pump is hydraulically coupled to the crankcase to lubricate the bearing and the other bearing with the fluid.
  • the suction side of the pump is hydraulically coupled to the bearing and the further bearing in order to be able to remove the fluid from the bearing and the further bearing.
  • the crank chamber comprises an eccentric space.
  • the crank bearing and the further crank bearing can each be arranged axially adjacent to the eccentric chamber. This allows a relatively good storage of the drive shaft can be achieved in the crankcase.
  • the pressure on the fluid may be greater in the eccentric space than the pressure on the fluid on the crank bearing and the further crank bearing.
  • the pressure difference between the eccentric and the crank bearings can be brought about by the pump. This allows a relatively good lubrication of both crank bearings.
  • the pump assembly may include a throttle disposed downstream of the pump.
  • the pump assembly may further include a valve disposed downstream of the pump. With the throttle and the valve in each case the pressure differences between the eccentric and the crank bearings can be controlled. Thus, a relatively large volume flow of the fluid can be adjusted at the crank bearings and the bearing of the drive shaft can be improved.
  • the drive shaft of the further pump may have a connecting line.
  • One end of the connection line may be hydraulically coupled to the crank bearing and another end to the suction side of the pump.
  • the connection line may have an area aligned along the longitudinal direction of the drive shaft and another area that is transverse to the area. Thus, the fluid can be guided relatively easily from the crank bearing.
  • FIG. 1 shows a block diagram of a pump arrangement according to a first embodiment
  • FIG. 2 shows a schematic illustration of a pump arrangement according to a further embodiment
  • FIG. 3 shows a schematic representation of a pump arrangement according to a further embodiment.
  • FIG. 1 shows a pump 101, which is hydraulically coupled to a fluid tank 102. Downstream of the pump 101, a further pump 110 for conveying the fluid is arranged in a pressure accumulator 103.
  • the pump 101 is hydraulically coupled on the output side with a valve 105. Between the pump 101 and the further pump 110, a further valve 106 is arranged.
  • the further valve 106 is, for example, a volume flow control valve with which the fluid flow from the pump 101 into the further pump 110 is adjustable. Downstream of the pump 101 and upstream of the further valve 106, a purge line 109 branches off.
  • the pump 101 is configured to deliver fluid from the fluid tank.
  • the pump 101 and the further pump 110 may be mechanically driven by a drive shaft, which may be coupled to a motor shaft, for example an internal combustion engine.
  • a drive shaft which may be coupled to a motor shaft, for example an internal combustion engine.
  • an electrically operated pump 101 it is also possible to use an electrically operated pump 101 and thereby make the control of the delivery rate of the pump 101 independent of other components, for example, the delivery rate of the pump 101 in one embodiment is independent of the delivery rate of the other pump 110th
  • the valve 105 is, for example, a pre-pressure control valve, by which, when a predetermined fluid pressure at the outlet side of the pump 101 is exceeded, part of the fluid delivered by the pump 101 is returned to the suction side of the pump. can be led. Thereby, the pressure on the output side of the pump 101 can be limited.
  • the purge line 109 opens on the output side into the housing of the further pump 110.
  • a throttle 104 and hydraulically in series thereto a purge line valve 108 is arranged in the purge line 109.
  • the throttle 104 may limit the flow of fluid through the purge line 109.
  • the fluid flow via the purge line 109 can be released via the purge line valve 108 when a predetermined fluid pressure at the outlet side of the pump 101 is exceeded. It is necessary that fluid is not diverted via the purge line 109, as long as the pressure build-up on the suction side of the other pump 110 is not completed in order not to delay the pressure build-up on the Ansaugsei- te the other pump 110.
  • the fluid conducted via the flushing line 109 for cooling and lubricating the further pump 110 into the pump housing of the further pump 110 can be removed from the housing of the further pump 110 via a return line 111 and a further return line 112.
  • the return line 111 and the further return line 112 are hydraulically coupled to the suction side of the pump 101.
  • the further pump 110 is coupled to the fluid tank 102 by means of a further line, which in turn comprises a further valve 107.
  • the turn further valve 107 is, for example, a pressure control valve, which can be controlled depending on a predetermined fluid pressure. When a predetermined fluid pressure in the pressure accumulator 103 is exceeded, the valve can open and return a portion of the fluid delivered by the further pump 110 to the fluid tank 102.
  • the pump arrangement may comprise further elements, for example further valves or sensors.
  • To protect the pumps and the valves may be arranged at appropriate locations filter.
  • hydraulic A filter may be provided between the fluid tank 102 and the pump 101.
  • the pump 101 delivers fluid from the fluid tank 102.
  • the fluid is, for example, a fuel and the fluid tank is accordingly a fuel tank.
  • the pressure at the outlet of the pump 101 is adjusted by the valve 105.
  • the fluid passes via the volume flow control valve 106 to the other pump 110.
  • the volume flow control valve 106 provides the further pump 110 with as much fluid as is required by the pressure accumulator 103.
  • the fluid is supplied via a supply line to the pressure accumulator 103.
  • the fluid or the fuel is guided, for example, to injectors and injected by these into combustion chambers of an internal combustion engine.
  • the fluid pressure required for the accumulator 103 is set by the pressure control valve 107. If the pressure in the pressure accumulator 103 increases too much or if the pressure in the pressure accumulator is to be deliberately reduced, fluid can be discharged into the fluid tank 102 via the line by means of the pressure control valve 107.
  • pump 101 pumps fluid into the housing of the further pump 110.
  • Fluids can be determined via the throttle 104 and is also controlled via the valve 105.
  • the fluid lubricates at least two bearings of the drive shaft. One of these bearings is connected via the return line 111 to the suction side of the pump 101, the second of these bearings is connected to the further return line 112 to the suction side of the pump 101.
  • the pump 101 draws the fluid from the crank bearings of the further pump 110 via the return lines 111 and 112.
  • the flushing of the crank bearings with fluid can be controlled by the pump 101, the valve 105 and the throttle 104.
  • the lubrication of the spa or the volume flow of the fluid for lubrication of the crank bearings is therefore independent of other variables in the fluid circuit, for example, the pressure at the valve 107th
  • FIG. 2 shows a pump 201, a fluid tank 202, a valve 205 and another valve 206. Hydraulically between the other valve 206 and the pump 201 branches a purge line
  • FIG. 1 There is shown another pump 210 having a housing 211, a crank chamber 212, a drive shaft 213, a crank bearing 214, another crank bearing 215, and an eccentric 216.
  • a return line 217 and another return line 218 are hydraulically coupled to the crank chamber 212 and the pump 201.
  • the pump 201 is configured to deliver fluid from the fluid tank 202 to deliver the fluid via the valve 206 to the further pump 210.
  • the valve 206 is, for example, a volume pressure control valve for controlling the amount of fluid supplied to the other pump 210. From the other pump
  • the fluid can be led into a pressure accumulator (not shown), for example into an accumulator of a pressure accumulator
  • the further pump 210 is driven by the drive shaft 213.
  • the drive shaft is disposed in the housing 211 within the crank chamber 212. Between the housing 211 and the drive shaft 213, the crank bearings 214 and 215 are arranged. These are intended to reduce the friction between the drive shaft and the housing.
  • the crank bearings reduce heat build-up and mechanical wear.
  • the bearings 214 and 215 are arranged in the longitudinal direction of the drive shaft in each case adjacent to the eccentric space 216. In the eccentric a portion of the drive shaft is arranged, which can cause a movement of a pump piston.
  • the section of the drive wave in the eccentric has an eccentric shape. If the drive shaft is a camshaft, the cams can be arranged in the eccentric space. In the axial direction, the sequence entlag the drive shaft: Kurbellager 214, cam chamber 216, another crank bearing 215th
  • the pump 201 pumps fluid via the line 209 into the eccentric space 216.
  • the amount of fluid can be controlled via the throttle 204 as well as via the valve 205.
  • a portion of the fluid which has been pumped into the eccentric chamber 216 is sucked out of the bearing 214 via the return line 217.
  • Another part of the fluid that has been pumped into the eccentric space 216 is sucked out of the further bearing 215 via the return line 218.
  • the fluid is sucked out of the eccentric space 216 via the bearings 214 and 215 by the pump 201.
  • the return line 217 is hydraulically coupled to the bearing 214
  • the bearing 215 is hydraulically coupled to the further return line 218.
  • Both the bearing 214 and the further crank bearing 215 may be lubricated by the fluid being pumped from the pump 201 into the crank chamber 212.
  • the fluid for lubrication is extracted from the crank chamber 212 by the pump 201 via two return lines which are hydraulically coupled to the crank chamber 212 adjacent to the crank bearings 214 and 215.
  • the pump 201 causes the pressure applied to the fluid to be higher in the eccentric space 216 than at the crank bearing 214 and the further crank bearing 215.
  • the resulting pressure difference between the eccentric space 216 and the crank bearing 214 and the eccentric space 216 and the other crank bearing 215 can be controlled via the throttle 204 and the valve 205.
  • FIG. 3 shows a pump 301 and further pump 310.
  • the pump 310 comprises a housing 311, a crank space 312, a drive shaft 313, a crank bearing 314, a further crank bearing 315, an eccentric space 316 and a connecting line 317 having a first region 318 and a second region 319.
  • the pump 301 is configured to deliver fluid, for example fuel, from a tank.
  • the pump 301 provides the fluid to the further pump 310 at a certain pressure.
  • the pump 310 can apply a higher pressure to the fluid, for example for a pressure tank of a fuel injection system of an internal combustion engine.
  • the pump 301 and the further pump 310 are driven by the drive shaft 313.
  • the drive shaft is disposed within the pump housing 311 in the crank chamber 312.
  • the crank chamber 312 has the eccentric space 316, in which a protruding region of the drive shaft is arranged to drive a pump piston.
  • the drive shaft 313 is from the housing 311 via the bearings
  • the bearings are plain bearings and reduce the friction between the housing 311 and the drive shaft 313.
  • the bearing 314 is disposed in a first direction adjacent the cam chamber 316, the other bearings
  • fluid can be pumped into the eccentric space 316.
  • the fluid can be pumped out of the eccentric chamber 316 via the bearing 315 by the pump 301 from the crank chamber 312.
  • the fluid flows in the bearing 315 between the drive shaft and the housing 311.
  • the pressure in the area of the further crank bearing 315 must be lower than the pressure in the eccentric space 316. This is achieved by the pump 301, which pumps fluid into the eccentric space and sucks it out of the area of the crank bearings ,
  • the pressure at the area of the bearing 314 must be lower As the pressure in the eccentric chamber 316.
  • the fluid is sucked off via the connecting line 317 from the crank chamber 312 in the region of the bearing 314 of the pump 301.
  • One end of the connecting line 317 is hydraulically coupled to the pump 301, another end of the connecting line 317 is hydraulically coupled to the crank chamber 312 in the region of the crank bearing 314.
  • the connecting line 317 is coupled to the bearing 314 or the crank space 312 via the region 319, which is oriented transversely to the axial direction of the drive shaft 313.
  • the region 319 of the connecting line 317 is hydraulically coupled on one side of the bearing 314 to the crank chamber 312, which is opposite to the eccentric chamber 316.
  • the connecting line 317 has the region 318, which extends substantially in the axial direction within the drive shaft 313.
  • the connection line 317 is bored, for example, in the drive shaft.
  • One end of the region 318 is hydraulically coupled to the suction side of the pump 301, the other end to the region 319.
  • the connecting line 317 also has the effect of a throttle, which protects the spa bearing 314 against pressure peaks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un système de pompe qui transporte un fluide et qui contient une pompe (201) et une autre pompe (210) disposée hydrauliquement en aval de la pompe (201). Un palier de vilbrequin (214) et un autre palier de vilbrequin (215) sont formés pour monter un arbre d'entraînement (213) de l'autre pompe (210). La sortie de la pompe (201) est couplée hydrauliquement à l'autre pompe (210) pour lubrifier par du fluide le palier de vilbrequin (214) et l'autre palier de vilbrequin (215). L'aspiration de la pompe (201) est couplée hydrauliquement au palier de vilbrequin (214) et à l'autre palier de vilbrequin (215) pour pouvoir pomper le fluide hors du palier de vilbrequin (214) et de l'autre palier de vilbrequin (215).
PCT/EP2009/053706 2008-04-04 2009-03-30 Système de pompe de transport de fluide WO2009121823A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810017222 DE102008017222A1 (de) 2008-04-04 2008-04-04 Pumpenanordnung zur Förderung eines Fluids
DE102008017222.7 2008-04-04

Publications (1)

Publication Number Publication Date
WO2009121823A1 true WO2009121823A1 (fr) 2009-10-08

Family

ID=40863401

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/053706 WO2009121823A1 (fr) 2008-04-04 2009-03-30 Système de pompe de transport de fluide

Country Status (2)

Country Link
DE (1) DE102008017222A1 (fr)
WO (1) WO2009121823A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9133804B2 (en) 2009-12-22 2015-09-15 Robert Bosch Gmbh System for feeding fuel from a tank to an internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012212153A1 (de) * 2012-07-11 2014-01-16 Robert Bosch Gmbh Hochdruckpumpe
ITUA20162000A1 (it) * 2016-03-24 2017-09-24 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016738A1 (fr) * 1991-03-22 1992-10-01 Robert Bosch Gmbh Pompe d'injection de carburant
DE19933569A1 (de) * 1999-07-16 2001-01-25 Siemens Ag Einspritzsystem für eine Brennkraftmaschine
EP1519031A1 (fr) * 2000-10-03 2005-03-30 C.R.F. Società Consortile per Azioni Dispositif pour reguler l'ecoulement d'une pompe a haute pression dans un systeme d'injection de carburant a rampe d'alimentation commune d'un moteur à combustion interne
DE102005050613A1 (de) * 2004-10-22 2006-04-27 Denso Corp., Kariya Kraftstoffeinspritzpumpe mit einer Öldichtung
EP1767771A1 (fr) * 2005-09-22 2007-03-28 Denso Corporation Pompe d'alimentation en combustible à haute pression
EP1767772A1 (fr) * 2005-09-27 2007-03-28 Delphi Technologies, Inc. Système de pompe à carburant
DE102006018702A1 (de) * 2006-04-21 2007-10-25 Robert Bosch Gmbh Kraftstoff-Hochdruck-Fördereinrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016738A1 (fr) * 1991-03-22 1992-10-01 Robert Bosch Gmbh Pompe d'injection de carburant
DE19933569A1 (de) * 1999-07-16 2001-01-25 Siemens Ag Einspritzsystem für eine Brennkraftmaschine
EP1519031A1 (fr) * 2000-10-03 2005-03-30 C.R.F. Società Consortile per Azioni Dispositif pour reguler l'ecoulement d'une pompe a haute pression dans un systeme d'injection de carburant a rampe d'alimentation commune d'un moteur à combustion interne
DE102005050613A1 (de) * 2004-10-22 2006-04-27 Denso Corp., Kariya Kraftstoffeinspritzpumpe mit einer Öldichtung
EP1767771A1 (fr) * 2005-09-22 2007-03-28 Denso Corporation Pompe d'alimentation en combustible à haute pression
EP1767772A1 (fr) * 2005-09-27 2007-03-28 Delphi Technologies, Inc. Système de pompe à carburant
DE102006018702A1 (de) * 2006-04-21 2007-10-25 Robert Bosch Gmbh Kraftstoff-Hochdruck-Fördereinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9133804B2 (en) 2009-12-22 2015-09-15 Robert Bosch Gmbh System for feeding fuel from a tank to an internal combustion engine

Also Published As

Publication number Publication date
DE102008017222A1 (de) 2009-10-08

Similar Documents

Publication Publication Date Title
DE102007000855B4 (de) Kraftstofffördergerät und Speicherkraftstoffeinspritzsystem, das dieses aufweist
EP1306548B1 (fr) Dispositif d'injection de carburant dont le réglage du débit est amélioré
DE602004003628T2 (de) Druckspeichereinspritzsystem
EP2591225B1 (fr) Système de carburant pour un moteur à combustion interne
DE102005027851A1 (de) Kraftstoffeinspritzsystem für eine Brennkraftmaschine
EP2449245B1 (fr) Système de carburant pour un moteur à combustion interne
EP1296060B1 (fr) Système d'injection de carburant pour un moteur à combustion interne
DE102006027486A1 (de) Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
EP2640958B1 (fr) Circuit basse pression pour un système d'injection de carburant et système d'injection de carburant
WO2013037545A1 (fr) Pompe à carburant haute pression pour un système d'injection de carburant et ensemble pompe
EP1911964B1 (fr) Pompe à carburant haute pression et système d'injection de carburant pour moteur à combustion interne
DE102006013165A1 (de) Kraftstoffhochdruckpumpe und Kraftstoffeinspritzsystem für eine Brennkraftmaschine
WO2010012525A1 (fr) Dispositif d'alimentation en carburant pour moteur à combustion interne
WO2009121823A1 (fr) Système de pompe de transport de fluide
WO2013037538A1 (fr) Circuit basse pression pour système d'injection de carburant et système d'injection de carburant
DE10261780A1 (de) Niederdruckkreislauf für ein Speichereinspritzsystem
DE102009037407A1 (de) Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine
WO2014009056A1 (fr) Circuit à basse pression pour un système d'injection de carburant, système d'injection de carburant et procédé de fonctionnement d'un système d'injection de carburant
DE102008058288A1 (de) Druckbegrenzungsventil und Hochdruckpumpe mit einem Druckbegrenzungsventil
DE102006060754A1 (de) Einspritzanlage für eine Brennkraftmaschine
DE102014201597A1 (de) Kraftstoffleitung für einen Niederdruckkreis eines Kraftstoffeinspritzsystems, Niederdruckkreis sowie Kraftstoffeinspritzsystem
DE102005059830B3 (de) Einspritzanlage für eine Brennkraftmaschine
DE102011008362A1 (de) Zweistufige Druckregelung
DE102009009837B4 (de) Einspritzanlage
DE102008051931A1 (de) Einspritzanlage für eine Brennkraftmaschine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09727841

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09727841

Country of ref document: EP

Kind code of ref document: A1