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CN108798960B - High-pressure fuel pump - Google Patents

High-pressure fuel pump Download PDF

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Publication number
CN108798960B
CN108798960B CN201810389894.6A CN201810389894A CN108798960B CN 108798960 B CN108798960 B CN 108798960B CN 201810389894 A CN201810389894 A CN 201810389894A CN 108798960 B CN108798960 B CN 108798960B
Authority
CN
China
Prior art keywords
sleeve
shaped part
pressure fuel
pump housing
fuel pump
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.)
Active
Application number
CN201810389894.6A
Other languages
Chinese (zh)
Other versions
CN108798960A (en
Inventor
D·贝克曼
F·马丁
S·普富尔
S·科尔布
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 CN108798960A publication Critical patent/CN108798960A/en
Application granted granted Critical
Publication of CN108798960B publication Critical patent/CN108798960B/en
Active legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004Joints; Sealings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02Pumps 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
    • F02M59/04Pumps 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02Pumps 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
    • F02M59/10Pumps 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
    • F02M59/102Mechanical drive, e.g. tappets or cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, 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
    • F02M59/46Valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, 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
    • F02M59/46Valves
    • F02M59/466Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8084Fuel injection apparatus manufacture, repair or assembly involving welding or soldering

Landscapes

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

Abstract

A high-pressure fuel pump, for example a fuel system (10) for an internal combustion engine, having a pump housing and an attachment socket fitted on a curved outer surface of the pump housing, through which fluid can flow into or out of the pump housing, characterized in that the attachment socket is embodied in multiple parts and has a first sleeve-shaped part centering the attachment socket in a bore of the pump housing and a second sleeve-shaped part securing the attachment socket on the curved outer surface of the pump housing.

Description

High-pressure fuel pump
Technical Field
The invention relates to a high-pressure fuel pump, for example a fuel system for an internal combustion engine, having a pump housing and a nozzle which is mounted on a curved outer surface of the pump housing and through which fluid can flow into or out of the pump housing.
Disclosure of Invention
The problem of the invention is solved by a high-pressure fuel pump according to claim 1. Advantageous embodiments are given in the dependent claims and in the exemplary embodiments.
The invention proceeds from the need to fix and permanently, but at the same time with little technical effort, the adapter on the convex outer surface of the pump housing.
The invention is also based on the recognition that for a fixed and permanent connection of the outer surface of the pump housing to the connection piece, the connection piece needs to be centered in the bore hole of the pump housing and fixed to the arched outer surface of the pump housing, so that the connection piece needs both a cylindrical region, for example, by means of which the connection piece can be centered in the bore hole of the pump housing, and a curved region, for example, by means of which the connection piece can be fixed to the arched outer surface of the pump housing. The inventors have recognized that such components are in principle complex and can only be produced with difficulty and are solved in the following according to claim 1 of the present invention.
The connection piece is designed in multiple parts and has a first sleeve-shaped part, which centers the connection piece in the bore of the pump housing, and a second sleeve-shaped part, which secures the structure to the convex outer surface of the pump housing, which can be supported by a relatively simple geometry with little effort and which can be mounted on the high-pressure fuel pump in a known manner. Overall, the adapter is arranged fixedly and permanently, but at the same time with little technical effort, on the convex outer surface of the pump housing.
The connection piece can in particular relate to a fuel inlet of a high-pressure fuel pump, via which the high-pressure fuel pump can be connected to a low-pressure region of the fuel system, for example a low-pressure pump. On the other hand, the connection piece can also be a discharge of a high-pressure fuel pump, through which the fuel, in particular compressed fuel, leaves the pump again. The outlet from the pump, which is not itself compressed in the pump, and/or which forms, for example, a leak or through which fuel, for example for flushing the pump, passes, also forms a structure in particular.
It is obvious that the connection piece can be provided without further measures on all sides of the pump housing, in particular on all sides of the cover element of the pump housing, for example on the radial and/or axial sides of the pump housing or of the cover element.
Within the scope of the invention, a sleeve-shaped section is understood to mean a section which is continuous and/or has, in particular, the shape of a ring disk or a cylindrical and/or complete pipe section. The sleeve-shaped portion may in particular have a circular outer and/or inner periphery.
Drawings
Exemplary embodiments of the present invention are explained later with reference to the drawings. The figures show:
FIG. 1 is a simplified schematic diagram of a fuel system for an internal combustion engine;
FIG. 2 is a cross-sectional view of a high pressure fuel pump according to the present disclosure;
FIGS. 3a, 3b, 3c are different views of a first embodiment of the invention;
fig. 4 is a cross-sectional view of a second embodiment according to the present invention.
Detailed Description
Fig. 1 shows a fuel system 10 for an internal combustion engine, not shown in detail, in a simplified schematic representation. In operation of fuel system 10, fuel is conducted from fuel tank 12 via suction line 14, by means of pilot pump 16 and low-pressure line 18 via inlet connection 20 to a high-pressure fuel pump 22, which is embodied as a piston pump. Downstream of the inlet connection 20, an inlet valve 24 is arranged fluidically, via which the piston chamber 26 can be fluidically connected to a low-pressure region 28, which comprises the suction line 14 of the priming pump 6 and the fuel tank 12. The pressure pulses in the low-pressure region 28 can be damped by means of a pressure damping device 29. The inlet valve 24 can be forced open by means of an operating device 30. The actuating device 30 and thus the inlet valve 24 are controllable by a control unit 32.
The pistons 34 of the high-pressure fuel pump 22 can be moved up and down along the longitudinal piston axes 38 by means of a drive 36, which is embodied in the present case as a cam disk, as is indicated schematically by the arrow with the reference number 40. A drain valve 44 is arranged hydraulically between the piston chamber 26 and a drain connection 42 of the high-pressure fuel pump 22, which can be opened to a high-pressure accumulator 46 ("rail").
The high-pressure accumulator 46 and the piston chamber 26 can be fluidically connected by means of a pressure-limiting valve 48, which opens when a boundary pressure in the high-pressure accumulator 46 is exceeded. The pressure-limiting valve 48 is designed as a spring-loaded check valve and can be opened toward the piston chamber 26.
The high-pressure fuel pump 22 is shown in a sectional view in fig. 2. In the view of fig. 2, it can be seen that the actuating device 30 comprises a spring-loaded push rod 49. The plunger 49 is movable by a solenoid 50 and can open a likewise spring-loaded valve body 51 of the inlet valve 24.
In the illustration of fig. 2, a pressure damping device 29 is arranged in the upper region of the high-pressure fuel pump 22. The pressure damping device 29 comprises a pot-shaped cover element 54 which is connected to the pump housing 52 in a connecting region 56 and more precisely in the present case by a KEEP weld seam (Kondensator-endpieces-Einpress-Schwei β naht). The connection region 56 extends in the circumferential direction around the pump housing 52.
The cover element 54 can, for example, be manufactured as a deep-drawn part. The inlet nipple 20 provided on the cover element 54 will be described in more detail below.
The pump housing 52 and the cover element 54 delimit an inner chamber 58 of the pressure damping device 29. A diaphragm damper 60 is arranged in the interior 58 of the pressure damping device 29. This comprises a first and in the figure upper membrane 62 and a second and in the figure lower membrane 64, which are welded to one another on the edge side. The upper and lower diaphragms 62, 64 enclose a damping volume 66 which is filled with gas and is compressible, since the two diaphragms 62 and 64 each constitute a flexible wall for the damping volume.
The diaphragm damper 60 is supported at the edge by a support element 68 on the pump housing 52 and is arranged axially or in the vertical direction in the drawing at a distance from it along the longitudinal piston axis 38. The spring element 70 is arranged opposite the support element 68 between the diaphragm damper 60 and the cover element 54. The diaphragm damper 60 is supported on the cover element 54 by a spring element 70 and is arranged at a distance from it in the axial direction 38. In general, the diaphragm damper 60 is clamped on the edge between the cover element 54 and the pump housing 52 by means of a support element 68 and a spring element 70.
During operation of the high-pressure fuel pump 22, the fuel in the low-pressure region 28 is excited to a pressure pulse. The pressure pulses may be compensated by compression or decompression of the diaphragm damper 60.
The intake nipple 20 of the high-pressure fuel pump 22 is arranged on the cover element 54 and is only schematically illustrated in fig. 2. An embodiment according to the invention is shown in detail in fig. 3a, 3b, 3c in terms of a first example and in fig. 4 in terms of a first example.
According to a first exemplary embodiment shown in fig. 3a, 3b, 3c, the high-pressure fuel pump 22 has a pump housing 52 with a cover element 54, on the arched radial outer surface of which a connection piece 20 is fitted, by means of which fuel can be introduced into an inner chamber 58 of the damping device 29 and thus into the pump housing 52 of the high-pressure fuel pump 22. The connection piece 20 is of multi-part design and has a first sleeve-shaped part 81, which centers the connection piece 20 in a bore 85 of the cover element 54 by pressing in, and a second sleeve-shaped part 82, by means of which the connection piece 20 rests against a convex outer surface of the cover element 54.
The second sleeve-shaped part 82 is press-fitted onto the first sleeve-shaped part 81, and the cover element 54, the first sleeve-shaped part 81 and the second sleeve-shaped part 82 are, in each case, connected in pairs to one another in a material-locking manner, for example by soldering or welding.
The first sleeve-shaped portion 81 and the second sleeve-shaped portion 82 are arranged coaxially with each other.
The second sleeve-shaped portion 82 has the shape of an annular disc and surrounds the first sleeve-shaped portion 81 without being in direct contact with the fuel. It bears with its concavely configured axial end face against the convex outer surface of the cover element 54 and on the other side with its axial end face facing away from the cover element 52 against an annular shoulder 86 of the first sleeve-shaped part 81.
The first sleeve-shaped part 81 is designed as a 90 ° bent tube section and can be connected to the fuel line in an end region 87 facing away from the pump housing 52, for example by way of a push-on fuel low-pressure line.
According to a second exemplary embodiment shown in fig. 4, the high-pressure fuel pump 22 has a pump housing 52 with a cover element 54, on the convex radial outer surface of which a connection piece 20 is fitted, by means of which the fuel can be introduced into an inner chamber 58 of the damping device 29 and thus into the pump housing 52 of the high-pressure fuel pump 22. The connection piece 20 is of multi-part design and has a first sleeve-shaped part 81, which centers the connection piece 20 in a bore 85 of the cover element 52 by pressing in, and a second sleeve-shaped part 82, by means of which the connection piece 20 rests against the convex outer surface of the cover element 54.
The second sleeve-shaped part 82 is press-fitted onto the first sleeve-shaped part 81, and the cover element 54, the first sleeve-shaped part 81 and the second sleeve-shaped part 82 are, in each case, connected in pairs to one another in a material-locking manner, for example by soldering or welding.
The first sleeve-shaped portion 81 and the second sleeve-shaped portion 82 are arranged coaxially with each other.
Here, the first sleeve-shaped part 81 and the second sleeve-shaped part 82 are arranged one behind the other in the flow direction. The first sleeve-shaped part 81 and the second sleeve-shaped part 82 each have the shape of a cylindrical pipe section, wherein the first sleeve-shaped part 81 bears with a radial outer contour 88 against a radial inner contour 89 of the second sleeve-shaped part 82 and wherein the first sleeve-shaped part 81 bears with an axial end face 91 facing away from the pump housing 52 in a planar or linear manner against an annular shoulder 92, which is formed in the interior of the second sleeve-shaped part 82 and faces the cover element 54.
The second sleeve-shaped part 82 can be connected to the fuel line in an end region 87 facing away from the pump housing 54, for example by way of a push-on fuel low-pressure line.

Claims (22)

1. A high-pressure fuel pump having a pump housing (52) and an attachment socket (20) which is fitted on a crowned outer surface of the pump housing (52) and through which fluid can flow into the pump housing (52) or out of the pump housing (52), characterized in that the attachment socket (20) is multi-part and has a first sleeve-shaped part (81) which centers the attachment socket (20) in a bore (85) of the pump housing (52) and a second sleeve-shaped part (82) which bears with a concavely configured axial end face against the crowned outer surface of the pump housing (52) in such a way that the attachment socket (20) is fixed on the crowned outer surface of the pump housing (52).
2. The high-pressure fuel pump according to claim 1, characterized in that the pump housing (52) has a housing body and a cover element (54) fitted on the housing body, and the attachment nipple (20) is fitted on a domed outer surface of the cover element (54).
3. The high-pressure fuel pump according to claim 1 or 2, characterized in that the first sleeve-shaped member (81) is pressed into the hole (85) of the pump housing (52).
4. The high-pressure fuel pump as claimed in claim 1 or 2, characterized in that the second sleeve-shaped part (82) is press-fitted onto the first sleeve-shaped part (81).
5. The high-pressure fuel pump according to claim 1 or 2, characterized in that the pump housing (52) and the first sleeve-shaped part (81) and/or the pump housing (52) and the second sleeve-shaped part (82) and/or the first sleeve-shaped part (81) and the second sleeve-shaped part (82) are connected to one another in a material-locking manner.
6. The high-pressure fuel pump according to claim 1 or 2, characterized in that the first sleeve-shaped member (81) and the second sleeve-shaped member (82) are coaxial with respect to each other.
7. The high-pressure fuel pump as claimed in claim 1 or 2, characterized in that the first sleeve part (81) and the second sleeve part (82) are deep-drawn parts, turned parts or milled parts.
8. The high-pressure fuel pump as claimed in claim 1 or 2, characterized in that the first sleeve-shaped part (81) and the second sleeve-shaped part (82) are arranged one behind the other in the flow direction.
9. The high-pressure fuel pump as claimed in claim 1 or 2, characterized in that the first sleeve-shaped part (81) and/or the second sleeve-shaped part (82) has the shape of a tube or the shape of an annular disk.
10. The high-pressure fuel pump as claimed in claim 1 or 2, characterized in that the first sleeve part (81) bears with a radially outer contour (88) against a radially inner contour (89) of the second sleeve part.
11. The high-pressure fuel pump as claimed in claim 1 or 2, characterized in that the first sleeve part (81) bears with an axial end flank (91) facing away from the pump housing (52) against an annular shoulder (92) which is formed in the interior of the second sleeve part.
12. The high-pressure fuel pump according to claim 1 or 2, characterized in that the second sleeve-shaped part (82) is connectable to a fuel line in an end region (87) facing away from the pump housing (52).
13. The high-pressure fuel pump as claimed in claim 1 or 2, characterized in that the second sleeve-shaped part (82) radially surrounds the first sleeve-shaped part (81) without being in direct contact with the fuel.
14. The high-pressure fuel pump according to claim 13, characterized in that the second sleeve-shaped part (82) has the shape of an annular disc.
15. The high-pressure fuel pump according to claim 13, characterized in that the second sleeve-shaped part (82) bears with an axial end flank (91) facing away from the pump housing (52) against an annular shoulder (86) which is formed on the outer contour of the first sleeve-shaped part (81).
16. The high-pressure fuel pump according to claim 1 or 2, characterized in that the first sleeve-shaped part (81) can be connected to a fuel line in an end region facing away from the pump housing (52).
17. The high-pressure fuel pump as claimed in claim 1, characterized in that it is provided as a fuel system (10) for an internal combustion engine.
18. The high-pressure fuel pump according to claim 2, characterized in that the cover element is embodied as a deep-drawn part.
19. The high-pressure fuel pump as claimed in claim 5, characterized in that the pump housing (52) and the first sleeve-shaped part (81) and/or the pump housing (52) and the second sleeve-shaped part (82) and/or the first sleeve-shaped part (81) and the second sleeve-shaped part (82) are soldered or welded to one another.
20. The high pressure fuel pump according to claim 9, wherein said tubular member is cylindrical.
21. The high-pressure fuel pump according to claim 12, characterized in that the second sleeve-shaped part (82) is connected to the fuel line by way of a sheathing fuel low-pressure line in an end region (87) facing away from the pump housing (52).
22. High-pressure fuel pump according to claim 16, characterized in that the first sleeve-shaped part (81) is connected to the fuel line in the end region facing away from the pump housing (52) by way of a sleeve-on fuel low-pressure line.
CN201810389894.6A 2017-04-28 2018-04-27 High-pressure fuel pump Active CN108798960B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017207197.4A DE102017207197A1 (en) 2017-04-28 2017-04-28 High-pressure fuel pump
DE102017207197.4 2017-04-28

Publications (2)

Publication Number Publication Date
CN108798960A CN108798960A (en) 2018-11-13
CN108798960B true CN108798960B (en) 2022-06-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810389894.6A Active CN108798960B (en) 2017-04-28 2018-04-27 High-pressure fuel pump

Country Status (2)

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CN (1) CN108798960B (en)
DE (1) DE102017207197A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019200026A1 (en) 2019-01-03 2020-07-09 Robert Bosch Gmbh Fuel piston pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1112225A (en) * 1994-03-16 1995-11-22 易通公司 Conduit attachment to receiver/drier or accumulator
CN2675996Y (en) * 2004-01-17 2005-02-02 伍剑海 Pipe connection
CN103717873A (en) * 2011-08-01 2014-04-09 丰田自动车株式会社 Fuel pump
WO2016184599A1 (en) * 2015-05-21 2016-11-24 Continental Automotive Gmbh High-pressure connection device, high-pressure fuel pump, and method for producing a high-pressure connection device for a high-pressure fuel pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1112225A (en) * 1994-03-16 1995-11-22 易通公司 Conduit attachment to receiver/drier or accumulator
CN2675996Y (en) * 2004-01-17 2005-02-02 伍剑海 Pipe connection
CN103717873A (en) * 2011-08-01 2014-04-09 丰田自动车株式会社 Fuel pump
WO2016184599A1 (en) * 2015-05-21 2016-11-24 Continental Automotive Gmbh High-pressure connection device, high-pressure fuel pump, and method for producing a high-pressure connection device for a high-pressure fuel pump

Also Published As

Publication number Publication date
DE102017207197A1 (en) 2018-10-31
CN108798960A (en) 2018-11-13

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