WO2017207150A1 - Pompe haute pression pour système d'injection de carburant - Google Patents

Pompe haute pression pour système d'injection de carburant Download PDF

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Publication number
WO2017207150A1
WO2017207150A1 PCT/EP2017/058529 EP2017058529W WO2017207150A1 WO 2017207150 A1 WO2017207150 A1 WO 2017207150A1 EP 2017058529 W EP2017058529 W EP 2017058529W WO 2017207150 A1 WO2017207150 A1 WO 2017207150A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure pump
filter
bore
pump according
high pressure
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.)
Ceased
Application number
PCT/EP2017/058529
Other languages
German (de)
English (en)
Inventor
Francesco Lucarelli
Muzaffar Fatdachow
Marco Lamm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2017207150A1 publication Critical patent/WO2017207150A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F02M59/10—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
    • 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
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/27—Fuel-injection apparatus with filters
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically

Definitions

  • 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.
  • a high pressure pump for a fuel injection system serves to deliver fuel to high pressure.
  • the high-pressure pump has at least one pump element with a high-pressure element space, in which the fuel is compressed and then fed via a high-pressure outlet to a high-pressure reservoir, the so-called rail.
  • the filling of the high-pressure element space with fuel is generally carried out via a suction valve, which may be designed as a mechanical suction valve or as an electromagnetically actuated suction valve.
  • the electromagnetically operated suction valve can be controlled in such a way that a metering unit upstream of the suction valve can be dispensed with for quantity metering.
  • Suction valves of the aforementioned type are susceptible to particles contained in the fuel. Because these can lead to jamming of the movable valve components, so that the suction valve does not close completely. As a result, it comes to leaks and / or malfunction, which can lead to the immediate shutdown of the engine, especially in a Einempelpumpe, ie in a high-pressure pumps with only one pump element.
  • suction valves are known from the prior art, which are equipped with a sieve or filter. A suction valve equipped with a sieve element can be seen, for example, from Offenlegungsschrift DE 10 2008 042 617 A1.
  • the screen element is annular and inserted in the manner in an outer peripheral side annular groove of a valve plate, that are formed in the valve plate and serving as Zulaufbohrungen radial bores are covered by the screen element.
  • the screen element thus prevents particles contained in the fuel from being introduced into the suction valve.
  • suction valve is a suction valve integrated into the high pressure pump and a valve plate is missing.
  • a suction valve is disclosed by way of example in the published patent application DE 10 2012 210 107 AI.
  • the valve seat is formed by a housing part of the high-pressure pump, so that a separate valve plate can be omitted.
  • a sieve or filter on the suction valve is dispensable if the suction valve is preceded by a metering unit. Because these too, it is important to protect against particles, so that the metering unit is usually equipped with its own sieve or filter. However, if the metering unit is omitted, since it is, for example, an electromagnetically actuated suction valve, the harmful particles must be removed in another way.
  • the present invention has for its object to provide a high-pressure pump for a fuel injection system, which is developed such that a suction valve of the high-pressure pump, which may in particular be integrated into the high-pressure pump and / or electromagnetically actuated suction valve, effectively contained in the fuel Particles is protected.
  • the proposed for a fuel injection system, in particular for a common rail injection system, high-pressure pump has a multi-part housing formed.
  • the housing comprises a base housing, in which an engine compartment is formed, and a cylinder head connected to the base housing, in which a cylinder bore for lifting receiving a pump piston is formed.
  • the pump piston defines within the cylinder bore a high-pressure element space which can be filled with fuel via a suction valve.
  • a filter assembly is pressed into a bore of the base housing serving as an inlet for the suction valve.
  • the filter assembly pressed into the bore prevents particles contained in the fuel from entering the suction valve and leading to leaks and / or malfunctioning of the suction valve.
  • the arrangement of the filter assembly is done for this purpose in the bore of the base housing, which serves as an inlet for the suction valve.
  • the filter assembly is thus able to replace a sieve arranged directly on the suction valve and / or on a metering unit.
  • the suction valve can also be designed as a sieve-free integrated and / or electromagnetically actuated suction valve. Because the concrete design of the suction valve and / or the presence of a metering unit is no longer important. This increases the freedom of design.
  • the filter assembly can thus be manufactured as a unitary assembly, resulting in a cost advantage.
  • the arrangement of the filter assembly in the region of an interface between the base housing and the cylinder head also facilitates the assembly of the filter assembly. Because before the connection of the base housing and the cylinder head, the hole into which the filter assembly is to be pressed, easily accessible from the outside. In addition, pressing in does not require a special tool, which further simplifies assembly.
  • the cylinder head For connection to the base housing, the cylinder head preferably has a flange portion, which is attached to the base housing and preferably with the Basic housing is screwed.
  • the common contact area in this case forms the interface between the basic housing and the cylinder head.
  • the filter assembly comprises an at least partially hollow cylinder-shaped filter carrier, which defines an annular space within the bore serving as an inlet for the suction valve together with the base housing.
  • the filter carrier can be flowed against axially via the annular space and can be flowed through in the region of the actual filter from radially outside to radially inside.
  • the axial influx contributes to the filter carrier, in particular the filter, adhering particles are washed away faster.
  • large filter surfaces can be realized because the axial dimension can be chosen arbitrarily large in contrast to the outer diameter of the filter carrier. Large filter surfaces are also less rapid.
  • the end of the filter carrier which has flowed past be closed or the filter carrier is substantially pot-shaped.
  • the filter carrier has at least one peripheral recess with a filter fabric arranged therein.
  • a filter fabric arranged therein.
  • a plurality of equiangularly spaced recesses are provided, so that the filter support is uniformly flowed through in the region of the filter fabrics arranged in the recesses.
  • the filter fabric enclosing filter carrier strengthens the arrangement.
  • the filter fabric is made of a wire mesh. In this way, the robustness of the filter fabric can be increased.
  • the filter fabric has a mesh size of 60 ⁇ to 250 ⁇ , in particular from 100 ⁇ to 200 ⁇ . The filter assembly thus allows the removal of any particles contained in the fuel corresponding size and larger, which are particularly harmful.
  • the filter support preferably with the exception of the filter fabric, made of plastic.
  • the filter fabric can be overmolded with plastic for the production of the filter carrier.
  • the filter assembly comprises a sleeve-shaped or hollow cylinder-shaped press-in part, which at least in sections has a radial interference interference with respect to the bore of the basic housing. The radial excess pressure ensures the interference fit.
  • the press-fit part is preferably made of metal.
  • the interference fit of the filter assembly within the bore of the base housing is achieved solely via the press-in part, so that the filter carrier, if necessary, except for the filter fabric, can be made entirely of plastic.
  • the Einpressteil is arranged externally on the filter carrier and connected to the filter carrier force, form and / or material fit.
  • the press-fit part and the filter carrier can be connected in such a way that the press-in part surrounds a section of the filter carrier.
  • the injection part and the filter fabric be encapsulated together with plastic. The connection takes place in this case in one step with the production of the filter carrier.
  • the injection part is designed as a metallic sleeve which surrounds a frontally open first end portion of the filter carrier.
  • the filter fabric is preferably arranged in the region of a second end section of the filter support which is closed at the end.
  • the filter assembly according to the invention also favors a venting of the high-pressure pump.
  • the press-in part can be designed as a collar sleeve.
  • the Einpressteil a hollow cylindrical approach with reduced outer diameter for receiving the filter support and / or for limiting an annular space within the bore of the base housing.
  • this facilitates the connection of the press-fit part to the filter support, since it is only pushed or pressed onto the projection of the press-fit part must become.
  • it is ensured that an annular space, via which the filter carrier can be flowed, is applied between the attachment and the housing part.
  • the hollow cylindrical projection of the press-in part has at least one radial bore serving as an inlet and at least one radial bore serving as an outlet, which are arranged at an axial distance from one another and received in an axially displaceable manner by the spring force of a hollow-cylindrical projection Spring loaded valve piston are connectable.
  • an overflow function can be realized by the filter assembly according to the invention. This causes a damping of occurring in the inlet region of the high-pressure pump pressure pulsations, so that the filter fabric is less stressed. As a result, the robustness of the filter assembly increases. In particular, the risk of a mesh breakage of the filter fabric is reduced.
  • the hollow cylindrical projection of the press-in part itself serves as a valve body, in which the valve piston is received axially displaceable.
  • a separate valve body is thus dispensable, so that a compact construction arrangement is achieved.
  • the at least one radial bore serving as inlet is preferably arranged at the level of the filter carrier or the filter fabric, so that furthermore the supply of fuel is secured in the direction of the suction valve. Furthermore, pressure pulsations can be reduced, which are entered from the inlet bore 29 into the bore 10. These may be due to the fact that the metering of fuel serving suction valve remains open briefly after the intake phase to push an excess amount of fuel from the Hochbuchelementraum back into the inlet area.
  • the filter assembly according to the invention advantageously comprises at least one annular sealing element which ensures the sealing required in the region of the interface between the base housing and the cylinder head of the high-pressure pump.
  • a separately inserted sealing element As part of the filter assembly can be dispensed with a separately inserted sealing element, so that the assembly is further simplified.
  • Vorzugswei- se is the sealing element made of an elastomeric material. This means that the sealing element is elastically deformable, so that it rests after assembly under a bias voltage to the base housing and the cylinder head. In this way, an optimal seal is achieved.
  • the suction valve is integrated in the cylinder head of the high-pressure pump.
  • the suction valve is integrated in the high-pressure pump.
  • the structure of the high-pressure pump can be simplified.
  • a compact design arrangement is achieved, so that the space requirement decreases.
  • the suction valve is electromagnetically actuated. That is, the quantitative metering of the fuel can take place via the suction valve, so that a metering unit is dispensable, whereby the structure of the high-pressure pump is further simplified.
  • FIG. 1 shows a schematic longitudinal section through a first preferred embodiment of a high-pressure pump according to the invention
  • FIG. 2 is a schematic view of the filter assembly of the high pressure pump of FIG. 1;
  • FIG. 3 shows a schematic longitudinal section through the filter assembly of the high pressure pump of FIG. 1,
  • FIG. 4 shows a schematic longitudinal section through a second preferred embodiment of a high-pressure pump according to the invention
  • Fig. 5 is a schematic view of the filter assembly of the high pressure pump of Fig. 4 and 6 shows a schematic longitudinal section through the filter assembly of the high-pressure pump of FIG. 4.
  • the high-pressure pump shown in FIG. 1 comprises a base housing 1, in which an engine compartment 2 is formed.
  • a camshaft 24 is arranged, via which a pump piston 5 can be driven in a stroke movement.
  • the pump piston 5 is supported on the camshaft 24 via a plunger assembly 26, which is received in a liftable manner in a plunger space 25.
  • a spring 27 holds the plunger assembly 26 in abutment with the camshaft 24.
  • the pump piston 5 is received in a cylinder bore 4 of a cylinder head ü.
  • the cylinder head 3 is connected via a flange portion 28 with the base housing 1 of the high-pressure pump.
  • the pump piston 5 is limited within the cylinder bore 4 a high-pressure element space 6, which is filled via a suction valve 7 with fuel.
  • the suction valve 7 is presently formed as an integrated suction valve 7 from.
  • an obliquely extending inlet bore 29 is formed, via which the suction valve 7 can be supplied with fuel.
  • To run hole 29 is connected thereto via a formed in the base housing 1 further bore 10 with the engine room 2 of the high-pressure pump.
  • a filter assembly 9 is pressed in the region of an interface 8 between the base housing 1 and the cylinder head 3 in order to protect the suction valve 7 from any harmful particles contained in the fuel.
  • the filter assembly 9 of the high-pressure pump shown in FIG. 1 has a hollow-cylindrical filter carrier 11 which is surrounded by a sleeve-shaped press-in part 15 in the region of a first end section.
  • the press-in part 15 is made of metal and has a press oversize relative to the bore 10 of the base housing, so that the filter assembly 9 can be pressed into the bore 10 via this.
  • the filter support 11 is essentially made of plastic and has in a further end portion of the Pressing part 15 faces away, window-like recesses 13, in each of which a filter fabric 14 is arranged.
  • An annular space 12 remaining between the filter carrier 11 and the base housing 1 ensures that the incoming fuel flows through the filter cloth 14 from radially outside to radially inside.
  • the filter assembly 11 also has an annular sealing element 22 which is pressed onto the end portion of the filter support 11, on which the press-in part 15 is arranged.
  • the filter assembly 9 is oriented in such a way that the sealing element 22 comes to lie in the region of the interface 8 between the base housing 1 and the cylinder head 3, so that the area is sealed (see Fig. 1).
  • FIG. 4 shows a further preferred embodiment of a high-pressure pump according to the invention, which differs from that of FIG. 1 only by the filter assembly 9. In this respect, reference may be made to the preceding description of the high-pressure pump of FIG. 1.
  • the filter assembly 9 of the high-pressure pump of FIG. 4 in addition to the filter function in addition to an overflow function.
  • the press-fit part 15 for realizing the overflow function has a hollow-cylindrical projection 16 which, together with the base body 1, delimits an annular space 17 (see FIG. 4).
  • the hollow cylindrical projection 16 has at the level of an externally pressed-on filter carrier 11 a plurality of radial bores 18 serving as an inlet. At an axial distance from the radial bores 18 further radial bores 19 are formed, which serve as an outlet.
  • a valve piston 21 is received axially displaceably in the hollow cylindrical projection 16, the axial displacement being effected against the spring force of a spring 20, on the one hand on the valve piston 21, on the other hand on a plug 23 is supported, which is pressed into the hollow cylindrical projection 16 of the press-15. If the pressure on the inlet side exceeds an opening pressure predetermined by the spring force of the spring 20, the valve piston 21 is deflected. gene of the spring force of the spring 20 axially displaced.
  • the filter assembly 9 of the high pressure pump of Fig. 4 is characterized by an increased robustness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne une pompe haute pression destinée à un système d'injection de carburant, notamment à un système d'injection à rampe commune, comprenant un boîtier en plusieurs parties qui comprend un boîtier de base (1) dans lequel est formée une chambre de mécanisme d'entraînement (2), et une culasse (3) qui est reliée au boîtier de base (1) et dans laquelle est formé un alésage de cylindre (4) destiné à recevoir un piston de pompe (5) mobile selon un mouvement alternatif, le piston de pompe (5) délimitant dans l'alésage de cylindre (4) une chambre élémentaire haute pression (6) qui peut être remplie de carburant par l'intermédiaire d'une soupape d'aspiration (7). Selon l'invention, un module de filtrage (9) est enfoncé dans la zone d'une interface (8) entre le boîtier de base (1) et la culasse (3), dans un orifice (10) du boîtier de base (1) servant d'entrée à la soupape d'aspiration (7).
PCT/EP2017/058529 2016-06-02 2017-04-10 Pompe haute pression pour système d'injection de carburant Ceased WO2017207150A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016209726.1 2016-06-02
DE102016209726.1A DE102016209726A1 (de) 2016-06-02 2016-06-02 Hochdruckpumpe für ein Kraftstoffeinspritzsystem

Publications (1)

Publication Number Publication Date
WO2017207150A1 true WO2017207150A1 (fr) 2017-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/058529 Ceased WO2017207150A1 (fr) 2016-06-02 2017-04-10 Pompe haute pression pour système d'injection de carburant

Country Status (2)

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DE (1) DE102016209726A1 (fr)
WO (1) WO2017207150A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113001194B (zh) * 2021-01-29 2022-07-26 山东统亚模塑科技实业有限公司 一种空气滤清器的焊接装配生产线

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10048365A1 (de) * 2000-09-29 2002-04-25 Bosch Gmbh Robert Drosselelement mit Spaltfilter
EP1348868A1 (fr) * 2001-01-05 2003-10-01 Hitachi, Ltd. Pompe a liquide et pompe d'alimentation en carburant haute pression
EP1512866A2 (fr) * 2003-09-03 2005-03-09 Denso Corporation Pompe à carburant avec filtre
DE102008042075A1 (de) * 2008-09-15 2010-03-18 Robert Bosch Gmbh Vorrichtung zur Kraftstoffversorgung einer Verbrennungskraftmaschine
DE102008042617A1 (de) 2008-10-06 2010-04-08 Robert Bosch Gmbh Kraftstoffpumpe zur Kraftstoffhochdruckerzeugung mit taillierter Ventilplatte
DE102011075474A1 (de) * 2011-05-09 2012-11-15 Robert Bosch Gmbh Hochdruckpumpe
DE102012210107A1 (de) 2012-06-15 2013-12-19 Robert Bosch Gmbh Hochdruckpumpe für ein Kraftstoffeinspritzsystem
WO2015163243A1 (fr) * 2014-04-25 2015-10-29 日立オートモティブシステムズ株式会社 Pompe à carburant à haute pression
DE102014217625A1 (de) * 2014-09-03 2016-03-03 Continental Automotive Gmbh Kraftstoffhochdruckpumpe

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10048365A1 (de) * 2000-09-29 2002-04-25 Bosch Gmbh Robert Drosselelement mit Spaltfilter
EP1348868A1 (fr) * 2001-01-05 2003-10-01 Hitachi, Ltd. Pompe a liquide et pompe d'alimentation en carburant haute pression
EP1512866A2 (fr) * 2003-09-03 2005-03-09 Denso Corporation Pompe à carburant avec filtre
DE102008042075A1 (de) * 2008-09-15 2010-03-18 Robert Bosch Gmbh Vorrichtung zur Kraftstoffversorgung einer Verbrennungskraftmaschine
DE102008042617A1 (de) 2008-10-06 2010-04-08 Robert Bosch Gmbh Kraftstoffpumpe zur Kraftstoffhochdruckerzeugung mit taillierter Ventilplatte
DE102011075474A1 (de) * 2011-05-09 2012-11-15 Robert Bosch Gmbh Hochdruckpumpe
DE102012210107A1 (de) 2012-06-15 2013-12-19 Robert Bosch Gmbh Hochdruckpumpe für ein Kraftstoffeinspritzsystem
WO2015163243A1 (fr) * 2014-04-25 2015-10-29 日立オートモティブシステムズ株式会社 Pompe à carburant à haute pression
EP3135899A1 (fr) * 2014-04-25 2017-03-01 Hitachi Automotive Systems, Ltd. Pompe à carburant à haute pression
DE102014217625A1 (de) * 2014-09-03 2016-03-03 Continental Automotive Gmbh Kraftstoffhochdruckpumpe

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