CN109154266A - High-pressure fuel pump - Google Patents
High-pressure fuel pump Download PDFInfo
- Publication number
- CN109154266A CN109154266A CN201780030951.5A CN201780030951A CN109154266A CN 109154266 A CN109154266 A CN 109154266A CN 201780030951 A CN201780030951 A CN 201780030951A CN 109154266 A CN109154266 A CN 109154266A
- Authority
- CN
- China
- Prior art keywords
- fixing element
- seal holder
- fuel pump
- pressure fuel
- flange
- 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.)
- Granted
Links
Classifications
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- 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
- F02M59/445—Selection of particular materials
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- 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
- F02M59/442—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 means preventing fuel leakage around pump plunger, e.g. fluid barriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0448—Sealing means, e.g. for shafts or housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
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- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/24—Bypassing
- F04B49/246—Bypassing by keeping open the outlet valve
-
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to a kind of high-pressure fuel pump (28), including the piston (30) with longitudinal axis line (33), the sealing device (54) of piston (30) is surrounded radially, the sealing device seals fuel-side (50) relative to oily side (52), wherein, sealing device (54) includes sealing element (60), fixing element (60) in the seal holder (58) that sticks on the oily side end of sealing element (56) and the fuel side end for sticking on sealing element (56), wherein, seal holder (58) looks up in the side of longitudinal axis line (33) at least to be extended as the fixing element (60) is so remote in fuel-side, or seal holder (58) looks up in fuel-side in the side of longitudinal axis line (33) than possible fixing element side flange (64) The downside (83) that orients of the oily side (52) of direction prolong and project farther, the flange constitutes the fuel side end (65) of fixing element (60).
Description
Technical field
The present invention relates to a kind of high-pressure fuel pumps as described in the preamble according to claim 1.
Background technique
In fuel system, using high-pressure fuel pump, so that fuel to be pre-compressed to the spray for fuel injection requirements
On injection pressure.This kind of high-pressure fuel pump usually has at least one piston, can be by means of being made of cam or eccentric disc
Driving device move axially at least one described piston.Radially outer be arranged in it is on piston, may generally be implemented as
The sealing element that the seal holder and fixing element of deep-draw element are kept separates fuel-side with oily side, makes fuel and oil as a result,
Mixing minimize.The sealing element is statically sealed relative to seal holder and is dynamically sealed relative to piston.
From seal holder known in the art, fixing element, the fixing element are packed into the seal holder
With being placed on the flange in seal holder in fuel-side.
Summary of the invention
The object of the present invention is to provide a kind of high-pressure fuel pump, the high-pressure fuel pump has more compact size simultaneously
And seal fuel-side reliably relative to oily side.
The task is solved by a kind of high-pressure fuel pump according to claim 1.Therefore save on high-pressure fuel pump
Structure height, and ensure to retain reliability of the fuel-side relative to oily side seal.
Preferably, it constructs to seal holder pot type and surrounds fixing element in circumferential direction, this ensures reliably
Fix and be accurately located sealing element.
Advantageously, it constructs to fixing element pot type.Thus sealing element is reliably protected to prevent the influence of piston, the piston
In high pressure pump operation, backstop is in fixing element.Thus damage sealing element is prevented, and therefore improves the operation peace of high-pressure pump
Full property and service life.
In a preferred embodiment, fixing element has the interconnecting piece with seal holder.Here, by described
Interconnecting piece ensures that fixing element can not be due to the power that is applied in fixing element under the operating status of pump and relative to sealing element
Bracket is moved along the direction of longitudinal axis line towards oily side.This ensures in pump operation through seal holder and fixing element
It keeps sealing element reliably, the damage of sealing element occurs without the movement due to fixing element.
Fixing element can have the flange for the fuel side end for constituting fixing element, and but this is not essential.Here,
Flange refers to the material section extended to radially outer, constitutes the fuel side end of fixing element, that is, constitutes fixing element
Following part: the direction for being partially toward fuel-side extends farthest.If fixing element includes this kind of flange, preferably
The interconnecting piece at least (jedenfalls) is partly made of the flange of fixing element, wherein the flange shape of fixing element
It is supported on the backstop section of seal holder in locking manner.This is a kind of reliable embodiment of interconnecting piece.In addition, being previously mentioned
Flange can receive in an advantageous manner the power due to caused by the shock being applied in fixing element by piston and by its
It is transmitted in seal holder.
Here, the extension of the flange of fixing element in radial directions especially should be highest 3mm, preferably up to 2mm, it is outstanding
Its 1mm, especially 0.5mm.Thereby, it is possible to make under flange in the case where not small forming part or by means of small forming part
It sinks in seal holder.Furthermore also advantageously, the extension of the flange of fixing element in radial directions is the material of flange
2 times of the highest of material thickness, preferably 1.5 times, especially 1 times.In the case where the more compact structure type of fixing element, Neng Goujian
Singly manufacture the flange for correspondingly determining size.
In a kind of advantageous embodiment, the backstop section of seal holder includes the chamfered edge in seal holder.
Such chamfered edge can receive the power being applied in seal holder by flange in an advantageous manner, and for example generating material does not damage
Bad, the material damage can damage the Functional Capability of high-pressure pump.
Here, the chamfered edge in seal holder relative to longitudinal axis line preferably between 35 to 55, preferably 40
Angle between to 50 extends, and is especially extended with 45 ° of angle.The chamfered edge extended in this way realizes the flange received by fixing element
The big power being applied in seal holder, and its to generate enough spaces convex in fixing element with being present in when necessary
Edge.Thereby it is ensured that the resistance high to the mobile ad-hoc of fixing element ensures extra high safety in operation in turn.
In a kind of advantageous embodiment, the flange of fixing element includes the chamfered edge of flange side, the chamfered edge in downside
Extended relative to longitudinal axis line with the angle between 35 to 55, preferably between 40 to 50, is especially prolonged with 45 ° of angle
It stretches.The chamfered edge of the flange side extended in this way, which is realized to receive, is applied to the big power in seal holder by the flange of fixing element,
And it generates enough spaces, because flange can cling in seal holder to a certain extent.
It is particularly preferred that not only the flange of seal holder but also fixing element has what is correspondingly just illustrated to fall
Rib.The flange of seal holder and fixing element advantageously can mutually recline as a result, and being capable of especially efficient and protection
Material ground transmission force.
In a kind of embodiment of high-pressure pump according to the present invention, the interconnecting piece of fixing element and seal holder is only
The only interconnecting piece of force closure.This is more particularly to passing through the accordingly press-fit implemented by force between seal holder and fixing element
To realize.Thus following advantages are generated: the sealed member of shape need not be set in the manufacturing process of seal holder and fixing element
Part, the advantageous manufacture of this cost of implementation.
Detailed description of the invention
Other feature of the invention is obtained from the following the description to embodiment that is of the invention, explaining with reference to the accompanying drawings, is answered
With feasibility and advantage, wherein the feature is not only able to individually and can be with different combinations for the present invention
It is important, and this is no longer particularly pointed out.It shows:
Schematic representation of the Fig. 1 for the simplification of the fuel system of internal combustion engine；
The part of the partial region of Fig. 2 high-pressure fuel pump according to the present invention；
The part of Fig. 3 Fig. 2；
A kind of diagram corresponding to Fig. 2 of alternate embodiments of Fig. 4 high-pressure fuel pump according to the present invention；
The diagram corresponding to Fig. 2 of another alternate embodiments of Fig. 5 high-pressure fuel pump according to the present invention；With
The diagram corresponding to Fig. 2 of another alternate embodiments of Fig. 6 high-pressure fuel pump according to the present invention.
Specific embodiment
Fig. 1 shows the fuel system 10 for internal combustion engine not shown further with simplified schematic representation.Pass through suction
Enter pipe 14, by means of pre- delivery pump 16 and low-voltage tube 18, by can be by the control valve 24 that electromagnetic type manipulation device 22 manipulates
Fuel is supplied the conveying chamber 26 of high-pressure fuel pump 28 by entrance 20 from fuel tank 12.Such as the control valve 24 can be fuel
The inlet valve that can forcibly open of high-pressure pump 28.
High-pressure fuel pump 28 is embodied as piston pump, wherein piston 30 can be by means of being embodied as the driving device of cam disc
32 move up and down along longitudinal axis line 33, this is schematically shown by the arrow with appended drawing reference 34.In Fig. 1
The outlet valve 40 for being configured to the check-valves of spring-loaded is hydraulically arranged in conveying chamber 26 and the outlet 36 of high-pressure fuel pump 28
Between, the outlet valve can be opened towards outlet 36.
In 36 linking to high-voltage tube 44 of outlet and pass through high-voltage tube linking to (" common rail ") on high pressure accumulator 46.This
Outside, the pressure limit valve 42 for being equally expressed as spring-loaded check-valves is hydraulically arranged between outlet 36 and conveying chamber 26,
The pressure limit valve can be opened towards conveying chamber 26.
When fuel system 10 is run, fuel is transported in low-voltage tube 18 by pre- delivery pump 16 from fuel tank 12.Amount control
Valve 24 can be closed and be opened according to the demand accordingly to fuel.Thus the fuel quantity for being delivered to high pressure accumulator 46 is influenced.
Electromagnetic type manipulation device 22 is manipulated by controlling and/or regulating device 48.
Fig. 2 shows a kind of lower areas 49 of embodiment of high-pressure fuel pump 28 according to the present invention.Piston 30 is from combustion
Material side 50 extends in oily side 52.Fuel-side 50 is sealed relative to oily side 52 by sealing device 54.Sealing device 54 is in week
Piston 30 is surrounded on the U of direction.Radial direction 55 is shown by corresponding arrow.Sealing device 54 includes sealing element 56, sealing element
Bracket 58 and fixing element 60.
In shown running position, seal holder 58 is on the oily side end of the lower part in Fig. 2 of sealing element 56
It sticks on the sealing element.In shown running position, fixing element 60 with U-shaped region 61 completely easily with sealing element
The 56 top fuel side end in Fig. 2 separates spacing.It looks up in the side of longitudinal axis line 33, seal holder 58 is being fired
Material side is prolonged than fixing element 60 to be projected farther.In other words: fixing element 60 is sunk to by under in seal holder 58.
Seal holder 58 has the circumferential wall W substantially upwardly extended in the side of longitudinal axis line 33.It is opened with centre
The bottom B of mouth O orthogonally extends to inner radial in the linking to circumferential wall W of oily side and with longitudinal axis line 33.In fuel
Side, circumferential wall W, which is converted to from piston, to be stretched out and (extends to radially outer and orthogonally extend relative to longitudinal axis line 33)
Top section A in.Join domain V is from the radially outward edge of top section A towards the direction of oily side 52 and along work
The direction for filling in longitudinal axis extends.That is, 58 range selector of seal holder pot type be configured with lower area in pot type section TA
In opening O.
Fixing element 60 similarly constructs to pot type.The circumferential wall BW of fixing element 60 is on the direction of longitudinal axis line 33
Extend and is converted in the U-shaped region 61 having been mentioned above oily side (i.e. at its in the accompanying drawings lower end).U-shaped region
61 constitute the bottom BB of fixing element 60, have and are generally relative to the orthogonal extension of longitudinal axis line 33.Bottom tool
There is middle opening BO, piston 30 extends across the middle opening.Fixing element 60 by pot type constructs in radial direction 55
Seal holder 58 surround.Here, the circumferential wall W force closure of seal holder 58 stick on the circumferential wall of fixing element 60
On BW.Sealing device 54 is fixed in pump case 63 with passing through the join domain V force closure of seal holder 58.
Fixing element 60 have in radial direction 55 outward (i.e. leave from piston to ground) extend and current very short
Flange 64, the flange have downside 83.The fuel side end 65 of fixing element 60 is made of flange 64.It means that flange 64
It is the part for farthest extending to fuel-side 50 of fixing element 60.The flange 64 of fixing element 60 keeps 60 shape of fixing element sealed
Ground is supported on the backstop section 66 of seal holder 58.Backstop section 66 includes chamfered edge 68.Chamfered edge 68 is relative to longitudinal axis
Line 33 is extended with 45 ° of angle 82.
In the region of press-fit 70, in fixing element 60 and the mutually connection in force closure of seal holder 58.That is,
In embodiment out shown in Fig. 2, fixing element 60 has the interconnecting piece with seal holder 58, which includes passing through
The force closure part and the shape locked portions generated on backstop section 66 are supported on by flange 64 that press-fit 70 generates.
Fig. 3 shows the region about flange 64 and backstop section 66 with the diagram amplified.Here, in Fig. 3, fixing element
(short) extension of 60 flange 64 in radial direction 55 has appended drawing reference 74.The material thickness of flange has attached drawing mark
Note 78.Chamfered edge 68 in seal holder 58 is relative to longitudinal axis line 33 with the extension of angle 82.In practice, chamfered edge 68
Angle 82 is between 35 ° to 55 °, preferably between 40 ° to 50 °, especially 45 °, as already mentioned above.In practice, convex
The extension 74 of edge 64 is highest 3mm, preferably up to 2mm, especially 1mm, especially 0.5mm or is up to the material thickness of flange 64
Twice, preferably 1.5 times, especially 1 times of degree 78.
Fig. 4 shows a kind of alternative embodiment of high-pressure fuel pump 28 according to the present invention, the alternative embodiment
It is the interconnecting piece between seal holder 58 and fixing element 60 with the difference of embodiment shown in Fig. 2 and 3.
In this embodiment, fixing element 60 does not have flange 64.The fuel side end 65 of fixing element 60 is by fixing
The end side of element 60 is constituted.In this regard, the interconnecting piece between seal holder 58 and fixing element 60 is only force closure
Interconnecting piece.However, the match ratio of press-fit 70 is real shown in Fig. 2 in order to ensure the reliability service of high-pressure fuel pump 28
Mode is applied more strongly to implement.
Fig. 5 shows another alternative embodiment of high-pressure fuel pump 28 according to the present invention, the implementation of another substitution
The difference of mode and embodiment shown in Fig. 2 and 3 is that seal holder 58 does not have chamfered edge 68.Therefore, although
The side of longitudinal axis line 33 seal holder 58 that looks up is prolonged in the downside 83 that fuel-side side 52 more oily than the direction of flange 64 orients
Project farther, but the side of longitudinal axis line 33 look up seal holder 58 fuel-side not as good as fixing element 60 generally
Extend so remote.In this embodiment, flange 64 also constitutes the fuel side end 65 of fixing element 60.
Fig. 6 shows another alternative embodiment of high-pressure fuel pump 28 according to the present invention, the implementation of another substitution
The difference of mode and embodiment shown in Fig. 5 is, flange 64 83 has chamfered edge 84 on the downside of it.The chamfered edge 84 is opposite
Extended in longitudinal axis line 33 with 45 ° of angle 86.In this embodiment, although looking up in the side of longitudinal axis line 33 close
Seal holder 58 prolongs in the downside 83 that fuel-side side 52 more oily than the direction of flange 64 orients to be projected farther, but in longitudinal axis line
The 33 side seal holder 58 that looks up generally extends so remote not as good as fixing element 60 in fuel-side.Preferably
In, flange 64 also constitutes the fuel side end 65 of fixing element 60.
When high-pressure fuel pump 28 is run, piston 30 moves up and down along longitudinal axis line 33, in figures 2 and 4
It is shown by arrow 34.Here, the U-shaped region 61 of fixing element 60 prevents the step S of piston 30 from impinging upon on sealing element 56.This
Outside, fixing element 60 is formed in the axial stop of sealing element 56 when high-pressure fuel pump 28 is run with its U-shaped region 61 and is transporting
It is lost during defeated high-pressure fuel pump 28 or during storage high-pressure fuel pump 28 for the anti-of piston 30.
Interconnecting piece between seal holder 58 and fixing element 60 prevents fixing element 60 in longitudinal axis line 33
Side slides upwardly toward oily side 52.Here, the interconnecting piece is not only in the embodiment according to fig. 2 with 3 but also according to Fig. 4
Embodiment in implement sufficiently strongly, so as under every kind of operating status of high-pressure fuel pump 28 (i.e. for it is all pump transport
Power occurring when row, being applied in fixing element 60) exclude this kind of landing.Here, in the operation shape of high-pressure fuel pump 28
The power being applied in fixing element 60 under state is mainly applied in fixing element 60 by piston 30 by sealing element 56.
Claims (10)
1. a kind of high-pressure fuel pump (28), including with longitudinal axis line (33) piston (30), surround the work radially
The sealing device (54) of (30) is filled in, the sealing device seals fuel-side (50) relative to oily side (52), wherein the sealing
Device (54) includes sealing element (60), sticks on the seal holder (58) on the oily side end of the sealing element (56) and recline
Fixing element (60) on the fuel side end of the sealing element (56), which is characterized in that in the longitudinal axis line (33)
Side look up, the seal holder (58) at least extends as the fixing element (60) is so remote in fuel-side, or
It looks up in the side of the longitudinal axis line (33), the seal holder (58) is more convex than possible fixing element side in fuel-side
The downside (83) of edge (64) oriented towards the oily side (52), which is prolonged, to be projected farther, and the flange constitutes the fixing element (60)
Fuel side end (65).
2. high-pressure fuel pump (28) according to claim 1, which is characterized in that seal holder (58) range selector
It constructs to pot type and is surrounded the fixing element (60) on circumferential direction (U).
3. high-pressure fuel pump (28) according to any one of claim 1 or 2, which is characterized in that the fixing element
(60) it constructs to pot type.
4. high-pressure fuel pump (28) according to any one of the preceding claims, which is characterized in that the fixing element
(60) there is the interconnecting piece with the seal holder (58), wherein the interconnecting piece makes the fixing element (60) can not
Due to the power being applied under the operating status of the high-pressure fuel pump (28) on the fixing element (60) relative to described
Seal holder (58) is mobile along the direction of the longitudinal axis line (33) towards the oily side (52).
5. high-pressure fuel pump (28) according to claim 4, which is characterized in that the interconnecting piece is at least partly by described
The flange (64) of fixing element (60) is constituted, wherein flange (64) shape of the fixing element (60) is supported on institute in locking manner
It states on the backstop section (66) of seal holder (58).
6. high-pressure fuel pump (28) according to claim 5, which is characterized in that the flange (64) of the fixing element (60)
Extension (74) on radial direction (55) is highest 3mm, preferably up to 2mm, especially 1mm, especially 0.5mm.
7. high-pressure fuel pump (28) according to claim 5 or 6, which is characterized in that the flange of the fixing element (60)
(64) extension (74) on radial direction (55) is 2 times of the highest of the material thickness (78) of the flange (64), preferably 1.5
Again, especially 1 times.
8. high-pressure fuel pump (28) according to any one of claims 5 to 7, which is characterized in that the seal holder
(58) backstop section (66) includes the chamfered edge (68) on the seal holder (58), and the chamfered edge is relative to the piston
Longitudinal axis (33) is extended with the angle (82) preferably between 35 to 55, preferably between 40 to 50, especially with 45 ° of angle
(82) extend.
9. the high-pressure fuel pump according to any one of claim 5 to 8 (28), which is characterized in that the flange (64) exists
Its downside (83) includes chamfered edge (84), and the chamfered edge is relative to the longitudinal axis line (33) between 35 to 55, preferably exist
Angle (86) between 40 to 50 extends, and is especially extended with 45 ° of angle (86).
10. high-pressure fuel pump (28) according to claim 4, which is characterized in that the fixing element (60) with it is described close
The interconnecting piece of seal holder (58) is the interconnecting piece (70) of only force closure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016208581.6A DE102016208581A1 (en) | 2016-05-19 | 2016-05-19 | High-pressure fuel pump |
| DE102016208581.6 | 2016-05-19 | ||
| PCT/EP2017/056439 WO2017198360A1 (en) | 2016-05-19 | 2017-03-17 | High-pressure fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109154266A true CN109154266A (en) | 2019-01-04 |
| CN109154266B CN109154266B (en) | 2021-12-24 |
Family
ID=58347404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780030951.5A Active CN109154266B (en) | 2016-05-19 | 2017-03-17 | High-pressure fuel pump |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR102288011B1 (en) |
| CN (1) | CN109154266B (en) |
| DE (1) | DE102016208581A1 (en) |
| WO (1) | WO2017198360A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6692303B2 (en) * | 2017-01-26 | 2020-05-13 | 日立オートモティブシステムズ株式会社 | High pressure fuel pump |
| DE102020215512A1 (en) * | 2020-12-09 | 2022-06-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | High-pressure fuel pump for an internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101341329A (en) * | 2005-12-23 | 2009-01-07 | 罗伯特·博世有限公司 | High-pressure pump, in particular for a fuel injection device of an internal combustion engine |
| US20120195778A1 (en) * | 2011-01-27 | 2012-08-02 | Nippon Soken, Inc. | High pressure pump |
| DE102011082740A1 (en) * | 2011-09-15 | 2013-03-21 | Robert Bosch Gmbh | Piston pump with a housing and at least one arranged in a piston guide of the housing axially movable piston |
| CN105358819A (en) * | 2013-06-25 | 2016-02-24 | 罗伯特·博世有限公司 | Pumping device, in particular high pressure fuel pumping device for a fuel injection device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5673284B2 (en) * | 2011-03-28 | 2015-02-18 | 株式会社デンソー | High pressure pump |
| KR101349641B1 (en) * | 2011-12-29 | 2014-01-10 | (주)모토닉 | High presure fuel pump for direct injection type gasoline engine |
| DE102013206930A1 (en) * | 2013-04-17 | 2014-10-23 | Robert Bosch Gmbh | Piston pump, in particular high-pressure fuel pump |
-
2016
- 2016-05-19 DE DE102016208581.6A patent/DE102016208581A1/en active Pending
-
2017
- 2017-03-17 CN CN201780030951.5A patent/CN109154266B/en active Active
- 2017-03-17 KR KR1020187033228A patent/KR102288011B1/en active IP Right Grant
- 2017-03-17 WO PCT/EP2017/056439 patent/WO2017198360A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101341329A (en) * | 2005-12-23 | 2009-01-07 | 罗伯特·博世有限公司 | High-pressure pump, in particular for a fuel injection device of an internal combustion engine |
| US20120195778A1 (en) * | 2011-01-27 | 2012-08-02 | Nippon Soken, Inc. | High pressure pump |
| DE102011082740A1 (en) * | 2011-09-15 | 2013-03-21 | Robert Bosch Gmbh | Piston pump with a housing and at least one arranged in a piston guide of the housing axially movable piston |
| CN105358819A (en) * | 2013-06-25 | 2016-02-24 | 罗伯特·博世有限公司 | Pumping device, in particular high pressure fuel pumping device for a fuel injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017198360A1 (en) | 2017-11-23 |
| KR20190008240A (en) | 2019-01-23 |
| KR102288011B1 (en) | 2021-08-12 |
| DE102016208581A1 (en) | 2017-11-23 |
| CN109154266B (en) | 2021-12-24 |
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