WO2009144126A1 - Pompe de carburant à haute pression - Google Patents

Pompe de carburant à haute pression Download PDF

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Publication number
WO2009144126A1
WO2009144126A1 PCT/EP2009/055528 EP2009055528W WO2009144126A1 WO 2009144126 A1 WO2009144126 A1 WO 2009144126A1 EP 2009055528 W EP2009055528 W EP 2009055528W WO 2009144126 A1 WO2009144126 A1 WO 2009144126A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure fuel
fuel pump
vibration
flange
damping
Prior art date
Application number
PCT/EP2009/055528
Other languages
German (de)
English (en)
Inventor
Siamend Flo
Bernd Schroeder
Matthias Schumacher
Christian Wiedmann
Tamim Latif
Matthias Maess
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 WO2009144126A1 publication Critical patent/WO2009144126A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
    • F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
    • F16J15/122—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement generally parallel to the surfaces
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such 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
    • F02M59/44—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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • F04B53/003—Noise damping by damping supports
    • 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
    • F02M2200/09—Fuel-injection apparatus having means for reducing noise
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9046—Multi-layered 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9053—Metals

Definitions

  • the invention relates to a high-pressure fuel pump for a fuel injection system of an internal combustion engine according to the preamble of claim 1.
  • pulsations During operation of a high-pressure fuel pump, pressure fluctuations (pulsations) occur in principle in a low-pressure region of the high-pressure fuel pump. In addition, for example, arises when operating a quantity control valve structure-borne noise. The pulsations (fluid sound) and the generated structure-borne noise generate vibrations in the entire audible frequency range, which is transmitted via the flange of the high pressure fuel pump to a mounting structure of the internal combustion engine. These vibrations also lead to increased vibration load of different components of the internal combustion engine. From DE 10 2005 033 634 Al a high-pressure fuel pump for a fuel injection system of an internal combustion engine is known, which is compact and operates with a high efficiency. The resulting during operation of the high pressure fuel pump pulsations in the low pressure region of the high-pressure fuel pump are partially attenuated using a arranged under a pump cover pressure damper.
  • the object of the invention is to develop a high-pressure fuel pump so that the high-pressure fuel pump ensures low-noise operation with low cost.
  • vibration-damping layer vibrations that are generated in the high-pressure fuel pump (pulsations) are attenuated in the direction of the internal combustion engine; In addition, the transmission of vibrations from the engine to the high-pressure fuel pump is reduced.
  • the present invention thus leads to a noise reduction and reduces the vibration or vibration load of the affected components.
  • the reduction in structure-borne sound transmission also reduces airborne sound radiation excited by structure-borne noise from the mounting structure.
  • the vibration-damping layer can serve as a side effect in a suitable embodiment as a seal between the high-pressure fuel pump and the mounting structure of the internal combustion engine and, for example, prevent the escape of engine oil or fuel.
  • the vibration damping layer on the flange during assembly is easy to implement, which has a favorable effect on the cost.
  • the vibration-damping layer requires virtually no additional space.
  • the relatively rigid connection of the high-pressure fuel pump to the internal combustion engine can be maintained, on the one hand the life of both the high-pressure pump and the attachment and on the other hand the efficiency (no tilting of the high-pressure pump) benefit.
  • the flange is attached via mounting screws to the internal combustion engine and between the screw heads of the
  • vibration damping layer This takes into account that in addition to a contact surface of the flange on the mounting structure of the internal combustion engine vibrations are transmitted via the mounting screws. By the vibration-damping layer under the screw heads this is prevented or greatly reduced.
  • the vibration damping layer comprises a viscoelastic material.
  • viscoelastic refers to polymers (high molecular weight elastic plastics such as polyurethanes, elastomers, plastomers, thermoplastics or silicones) with special elastic properties. The properties manifest themselves as if the elasticity of solid bodies combined with fluid-like behavior. Under dynamic loading part of the deformation work is absorbed by the viscoelastic material, while another part is dissipated (converted) becomes.
  • a suitable polymer further requirements, for example, for temperature resistance and for a chemical resistance to ambient media (eg oil, fuel) have to be considered.
  • the transmitted structure-borne sound power is efficiently absorbed by the viscoelastic material damping partially in the viscoelastic material and partially dissipated.
  • the vibrations transmitted at the transition point from the flange of the high-pressure fuel pump to the mounting structure can thus be reduced particularly effectively.
  • a damping element which has at least one metallic sheet, wherein at least on one side of the sheet, the vibration-damping layer is arranged.
  • the damping element (so-called “sandwich” or “compound” - sheets) is disc-shaped and serves as a support for the flange of the high-pressure fuel pump, which is mounted on the mounting structure.
  • a thin viscoelastic layer is laminated on the metallic sheet.
  • the damping element comprises at least one metallic sheet, which has a vibration-damping layer on both sides.
  • the two-sided lamination of the viscoelastic layer leads to an increase in the viscoelastic properties of the damping element.
  • the metallic sheet acts stabilizing, so that the elasticity of the attachment of the high-pressure fuel pump through the viscoelastic layer is only slightly increased and all functional requirements (no tilting of the pump) and strength requirements (load on the mounting screws) are still met.
  • the manufacture of the disk-shaped damping elements is essentially carried out by cutting to size of flat sheets on which the viscoelastic layer (s) is already laminated.
  • the properties of the damping element can be adjusted by choosing the thickness of the respective layer and / or the material properties with regard to optimization parameters (for example, frequencies to be damped or temperature resistance, chemical resistance).
  • the damping element can be covered on a top and / or bottom by a metallic sheet to further increase the stabilizing properties of the damping element. Since the damping element consists of inexpensive material to be produced and no costly production costs incurred, the invention is in any case extremely inexpensive and effective.
  • the damping element has at least two metallic sheets, between which the vibration-damping layer is arranged.
  • This damping element is also preferably disc-shaped and acts as a support between the flange of the high-pressure fuel pump and the mounting structure of the internal combustion engine. While in the first described embodiment of the damping element, the viscoelastic properties were increased, in the second embodiment by the use of two metal sheets, the stabilizing properties of the attachment are increased. In terms of manufacturing technology, the viscoelastic layer is laminated between the two sheets. In bending stress, a central viscoelastic sandwich layer is subjected to high dynamic shear stress and thus a high proportion of vibration energy is dissipated by material damping.
  • the vibration-damping layer has a profiling or micro-profiling on at least one side. This means that at least one side of the vibration-damping layer, which consists of viscoelastic material and bears directly on the flange or on the mounting structure, has nubs. As a result, the vibration-damping effect is further increased.
  • the vibration-damping layer has a transport safety device and / or an assembly aid.
  • the vibration-damping layer after the production of the high-pressure fuel pump and after the simple pressing on the flange, for example.
  • retaining clips already in an intended installation position, so for example. Centered relative to the flange held. Design changes to the high pressure pump are not required. This facilitates the assembly of the high-pressure fuel pump, since during assembly, the mounting screws only need to be used and bolted to the mounting structure. It is also possible that after production instead of the retaining clips mounting pins are inserted into the holes for fixing the high-pressure fuel pump.
  • Figure 1 is a schematic diagram of an internal combustion engine with a high-pressure fuel pump
  • Figure 2 is a perspective view of the high-pressure fuel pump of Figure 1;
  • FIG. 3 shows a first exemplary embodiment of a vibration-damping layer according to the invention
  • FIG. 4 shows a second exemplary embodiment of the vibration-damping layer according to the invention
  • FIG. 5 shows a third exemplary embodiment of the vibration-damping layer according to the invention.
  • Figure 6 is a schematic representation of a first way of securing the
  • Figure 7 is a schematic representation of a second way of securing the
  • FIG. 8 shows a perspective view of a flange of the high-pressure fuel pump from FIG. 2 with a first possible transport securing / mounting aid for the vibration-damping layer;
  • Figure 9 is a perspective view of the flange of the high-pressure fuel pump
  • an internal combustion engine carries the reference numeral 10 as a whole. It comprises a fuel tank 12, from which a prefeed pump 14 conveys fuel into a low-pressure line 16. The pressure in the low pressure line 16 is adjusted by a pressure control or pressure control valve 18.
  • the low-pressure line 16 leads to a high-pressure fuel pump 20, the structure of which is described in more detail in FIG.
  • the high pressure fuel pump 20 is mechanically driven by the engine 10. It compresses the fuel to a very high pressure and delivers it to a high-pressure fuel accumulator 22, also referred to as "RaM".
  • To these several injectors 24 are connected, which inject the fuel under high pressure in them directly associated combustion chambers 26.
  • the operation of the internal combustion engine 10 is controlled and regulated by a control and regulating device 28.
  • the high-pressure fuel pump 20 is designed as a radial piston pump and has a pump housing 32, whose outer surface is approximated to the shape of a hexagon. On the pump housing 32, a pump cover 34 is arranged. In a region pointing rearwardly in FIG. 2, a quantity control valve 36 is arranged.
  • the pump housing 32 is attached via a flange 38 on the internal combustion engine 10 shown in Figure 1 via mounting screws (not shown in Figure 2) to a designated mounting structure (not shown in Figure 2) of the internal combustion engine 10.
  • the flange 38 holes 39 for inserting the mounting screws From the pump housing 32 protrudes
  • the middle connection in FIG. 2 is formed by a low-pressure connecting piece 44, which is fed by the prefeed pump 14 shown in FIG. 1 and leads to a low-pressure region of the high-pressure fuel pump 20.
  • the connection illustrated on the left-hand side in FIG. 2 is formed by a high-pressure connection piece 46, which is assigned to a high-pressure region of the high-pressure fuel pump 20 and feeds the high-pressure fuel accumulator 22 (FIG.
  • the right-hand port shown in Figure 2 is formed by a port 48 which supplies fuel leakage from the high-pressure fuel pump 20 to the fuel tank 12 ( Figure 1).
  • the high-pressure fuel pump 20 is designed as a plug-in pump, which is plugged into a corresponding opening in the motor housing (not shown) of the internal combustion engine 10.
  • the piston 40 seated radially on a cam or balance shaft is then set in a reciprocating motion.
  • the piston stroke is the Fuel in a delivery chamber (not visible) compressed and conveyed to the high pressure port 46. For this reason, the pump sits relatively stiff in and on the motor housing ("mounting structure").
  • the flange 38 forms - without countermeasures - with the mounting structure of the internal combustion engine, a transitional region, via the structure-borne noise in the form of vibrations from the internal combustion engine 10 to the high pressure fuel pump 20 and body and fluid sound in the form of vibrations from the high pressure fuel pump 20 to the engine 10 is transmitted.
  • the vibrations are partially transmitted via the pump housing 32 and via the low pressure line 16 to all body parts and for example a tank mounting unit (not shown), which leads there to an undesirable, disturbing sound radiation.
  • a tank mounting unit not shown
  • different components, in particular the flange 38 of the high pressure fuel pump 20 charged due to vibrations resulting from the vibrations, different components, in particular the flange 38 of the high pressure fuel pump 20 charged.
  • a damping element 50 ( Figures 3 to 7) with a vibration damping layer 54 to reduce the transmission of sound between the flange 38 and the mounting structure 56 (shown only in Figures 6 and 7) of the internal combustion engine 10 is used.
  • the damping element 50 comprises at least one metallic sheet 52 and at least one respectively applied viscoelastic layer 54 (so-called “sandwich” or “compound” sheets), so that a disk-shaped damping element 50 results.
  • the damping element 50 holes for mounting screws (only shown in Figures 6 and 7).
  • FIG. 3 shows a construction of a first embodiment of the disc-shaped one
  • the damping element 50 has two mutually parallel metallic plates 52, between which the vibration-damping layer 54 is arranged.
  • the vibration damping layer is made of a viscoelastic material and laminated between the two sheets.
  • the sheets 52 may be made in different thickness and / or made of a different material in an embodiment not shown.
  • the present embodiment is particularly stiff.
  • the damping element may also have more than two sheets 52 and thus more than one viscoelastic layer 54.
  • FIG. 4 shows a construction of the disc-shaped damping element 50 in a second embodiment. Identical or functionally equivalent components to FIG. 3 are identified here and below by the same reference numerals.
  • the damping element 50 comprises a single metal sheet 52 which is coated on both sides with a vibration damping layer 54 of viscoelastic material, for example by lamination.
  • the thickness of the viscoelastic material 54 may be different.
  • the damping element 50 more than a sheet 52 and thus more than two vibration damping layers 54 have.
  • FIG. 5 shows a construction of the disk-shaped damping element 50 in a third embodiment. Identical or functionally equivalent components to FIGS. 3 and 4 are identified by the same reference numerals.
  • the damping element 50 has two metal sheets 52 arranged parallel to one another, between which a first vibration-damping layer 54 made of a viscoelastic material is applied, preferably laminated.
  • a first vibration-damping layer 54 made of a viscoelastic material is applied, preferably laminated.
  • the upper side of the damping element 50 is externally coated with a vibration-damping layer 54 of viscoelastic material, which is also preferably laminated.
  • the thickness of the sheets 52 and / or the vibration damping layers 54 may be different.
  • the damping element may of course have more than two sheets 52 and thus more than two vibration damping layers 54.
  • the exemplary embodiments show that the arrangement of the individual layers (sheet 52 and vibration-damping layer 54) of the damping element 50 can be specifically aligned with the specific application.
  • FIG. 6 shows a schematic representation of a first possibility of fastening the high-pressure fuel pump 20 from FIG. 1 or 2 using the first embodiment of a damping element 50 shown in FIG. 3.
  • the high-pressure fuel pump 20 has the flange 38 on its underside in FIG on. Between the flange 38 and the mounting structure 56 of the internal combustion engine 10, the disc-shaped damping element 50 is arranged.
  • the flange 38 comprises bores 39 (only one bore 39 is visible in FIG. 6) into which mounting screws 58 are inserted.
  • the Mounting screws 58 penetrate the disc-shaped damping element 50, which also has holes (without reference numerals) for it.
  • Through a thread 60 of the mounting screws the entire construction, consisting of high-pressure fuel pump 20 with flange 38 and the disc-shaped damping element 50 is attached to the mounting structure 56.
  • the effect of the described device is that the use of the disc-shaped damping element 50 due to the high material damping in the viscoelastic layer, a reduction of the vibration properties and the structure-borne noise is realized without the rigid connection of the high-pressure fuel pump 20 to the mounting structure 56 too flexible do. It is immaterial whether the vibrations originate from the internal combustion engine 10 or from the high-pressure fuel pump 20. The required rigid and rigid attachment of the high pressure fuel pump 20 to the mounting structure 56 is substantially maintained and continues to meet the requirements for acoustics, performance, and strength resulting from a high pressure fuel pump design.
  • FIG. 7 shows a schematic illustration of an alternative to the attachment of the high-pressure fuel pump 20 shown in FIG. 6.
  • Identical or functionally equivalent components in FIG. 6 are identified by the same reference numerals and will not be explained again.
  • the only difference in Figure 7 to Figure 6 is that under a screw head 62 of the mounting screw 58, a disc-shaped damping element 50 is inserted.
  • Figure 7 has an improved sound-damping effect, since the sound transmission through the mounting screws 58 in addition to the described effects with Figure 6 prevents or at least greatly attenuated.
  • Figures 8 and 9 show ways to bring the damping element 50 after manufacture already in an intended installation position, so that when mounting only the mounting screws 58 used and must be bolted to the mounting structure.
  • the damping element 50 is held by means of four arranged on the circumference of the damping element 50 retaining clips 64 on the flange 38, so that the holes 39 of the flange 38 coincide with the corresponding holes in the damping element 50.
  • FIG. 9 shows an alternative possibility for positioning the damping element 50, in which mounting pins 66 are inserted into the holes 39 and the bores in the damping element 50, which hold the damping element 50 and center with respect to the flange 38.
  • the mounting pins 66 then need to be replaced by the final mounting screws 58 prior to assembly.
  • the mounting pins 66 are designed to be smooth on the circumference, but they can also have a thread or a corrugation or a friction layer through which the damping element is secured to the flange.

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

Abstract

La présente invention concerne une pompe de carburant à haute pression (20) pour un système d'injection de carburant d'un moteur à combustion interne (10), avec un carter de pompe (32) qui comprend une bride (38) pour la fixation sur le moteur à combustion interne (10). Une couche (50) d'amortissement des vibrations est disposée entre la bride (38) et le moteur à combustion interne (10).
PCT/EP2009/055528 2008-05-29 2009-05-07 Pompe de carburant à haute pression WO2009144126A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102008002068.0 2008-05-29
DE102008002068 2008-05-29
DE102008042626A DE102008042626A1 (de) 2008-05-29 2008-10-06 Hochdruck-Kraftstoffpumpe
DE102008042626.1 2008-10-06

Publications (1)

Publication Number Publication Date
WO2009144126A1 true WO2009144126A1 (fr) 2009-12-03

Family

ID=41254076

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/055528 WO2009144126A1 (fr) 2008-05-29 2009-05-07 Pompe de carburant à haute pression

Country Status (2)

Country Link
DE (1) DE102008042626A1 (fr)
WO (1) WO2009144126A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP2539574A4 (fr) * 2010-02-23 2014-04-30 Shiloh Ind Inc Capot d'insonorisation destiné à la pompe d'injection d'un véhicule
DE102011076541B4 (de) * 2011-05-26 2016-07-07 Wmf Württembergische Metallwarenfabrik Ag Verbindungsanordnung eines Brühantriebs an einer Aufnahme einer Brüheinrichtung
DE102012211104A1 (de) 2012-06-28 2014-01-02 Robert Bosch Gmbh Hochdruck-Kraftstoffpumpe für ein Kraftstoffsystem einer Brennkraftmaschine
DE102013202569A1 (de) * 2013-02-18 2014-08-21 Robert Bosch Gmbh Baugruppe umfassend Pumpelement und Befestigungsflansch
JP6183828B2 (ja) * 2013-03-22 2017-08-23 三菱重工サーマルシステムズ株式会社 圧縮機の防振支持構造
DE102015203302A1 (de) 2015-02-24 2016-08-25 Bayerische Motoren Werke Aktiengesellschaft Antriebselement für eine Hochdruckpumpe
GB2544527A (en) * 2015-11-20 2017-05-24 Gm Global Tech Operations Llc Fuel unit pump assembly comprising an isolator
DE102017126642A1 (de) 2017-11-13 2019-05-16 Volkswagen Aktiengesellschaft Vorrichtung zur Reduzierung von Druckwellenschwingungen in einer Einspritzvorrichtung
JP7020274B2 (ja) * 2018-04-26 2022-02-16 トヨタ自動車株式会社 内燃機関
JP7367903B2 (ja) * 2019-09-10 2023-10-24 Nok株式会社 ガスケット
DE102019214661A1 (de) 2019-09-25 2021-03-25 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe
CN115059762B (zh) * 2022-08-09 2022-11-11 海安明宇智能控制技术有限公司 自动化仪表用减震密封件

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JP2007239684A (ja) * 2006-03-10 2007-09-20 Bosch Corp 燃料供給用ポンプ

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THOMSON SCIENTIFIC: "JP2007239684 A - ENGLISH TRANSLATION", 20 September 2007, THOMSON SCIENTIFIC *

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