CN106795845A - Pumping mechanism - Google Patents
Pumping mechanism Download PDFInfo
- Publication number
- CN106795845A CN106795845A CN201580055779.XA CN201580055779A CN106795845A CN 106795845 A CN106795845 A CN 106795845A CN 201580055779 A CN201580055779 A CN 201580055779A CN 106795845 A CN106795845 A CN 106795845A
- Authority
- CN
- China
- Prior art keywords
- seal
- section
- extension
- pump head
- plunger
- 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
-
- 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
-
- 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
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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
- F04B1/0408—Pistons
-
- 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
-
- 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
- F04B53/02—Packing the free space between cylinders and pistons
-
- 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
-
- 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
- F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
- F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
- F02M41/14—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons
- F02M2041/1438—Arrangements or details pertaining to the devices classified in F02M41/14 and subgroups
- F02M2041/1494—Details of cams, tappets, rotors, venting means, specially arranged valves, e.g. in the rotor
-
- 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
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
A kind of seal assembly for fuel under high pressure pumping mechanism includes seal and seal retainer, wherein described seal partially around the pump head extension of section and extend underneath towards cam follower portion in the pump head, and wherein described seal is partially disposed in the seal retainer, and from the seal retainer, extend the cam follower portion；There is provided the device for being maintained at the seal retainer on the pump head, such as weld seam.
Description
Technical field
The present invention relates to a kind of high pressure fuel pump, relate more specifically to a kind of combustion activated by oil lubricating type cam follower
Expect the pumping mechanism of pump.
Background technology
As illustrated in Figure 1, the pumping mechanism 2 of known high pressure fuel pump (such as modular pump) includes pump head 6, pump head
6 are provided with plunger location hole 8, in the axial direction partly position plunger 10 and are limited in post by the leader 20 in hole 8
In plug location hole 8.Plunger 10 extends towards cam follower 12, and cam follower includes tappet 14 and roller 16.Rotation cam is (not
Show) power is provided to plunger 10 via cam follower 12, cause plunger 10 reciprocally to be moved inside pump head 6, from
And the fuel to being arranged in expansion chamber's (not shown) of the end away from cam follower 12 in hole 8 pressurizes.Spiral shell
Rotation spring 18 is compressed between cam follower 12 and pump head 6, and the maintaining roller during the backstroke of pumping mechanism 2
Contact between 16 and cam.
Plunger 10 is lubricated by the fuel inside the leader 20 of plunger location hole 8, and the lower end of plunger 10 and
Cam follower 12 is lubricated by engine oil.When plunger 10 is reciprocally slided in pump head 6, a small amount of oil can be caused
Mix with fuel, so as to generate undesirable pollution.
In the fuel system of European emission standard in Europe more than 6 is met, particulate filter is provided with gas extraction system
In the case of, the oil in fuel system has the adverse effect for producing chemical substance, and this can cause filtering during combustion process
Device is blocked, the spray orifice of this trypsin method injector nozzle.
The fuel contamination of lubricating oil increasingly attracts attention in newest high-efficiency engine, because lubricating oil viscosity is just
Reducing to minimize friction loss, and all manufacturers of engines all increase maintenance shop every.
In the pump group part of the older application required with less strict dilution, previously by plunger and the guide portion in hole
The control gap divided between (plunger can be movable within) realizes the separation of oil and fuel.However, being fired for diesel oil of new generation
Material jet pump, control of the fuel to the dilution rate of the demand and oil and fuel of oil is increasingly strict.
In order to meet fuel lubrication acceptable dilution new regulation (wherein admissible fuel quantity be usually suitable for compared with
Permissible dose under the regulation of old pump group part application 1/20 or 1/100), it is necessary to axial seal as illustrated in Figure 1 is provided
Part 22.Except seal 22, in addition it is also necessary to provide metallic retainer 24, metallic retainer 24 passes through the (region 26 pointed out in Fig. 1
Place) crimp and be attached to pump head 6 to place seal 22 and O-ring seal 28, so that seal retainer 24 and pump head 6
Between interface.
The known problem of such pump is to be difficult to verify crimping operation, and it sufficiently solid must keep with by retainer
On pump head, but must also be weak enough in order to avoid make matching bore deformation, or retainer is damaged during crimping operation.
The content of the invention
It is an object of the invention to provide a kind of improved high-voltage petrolift at least alleviating above mentioned problem.
Therefore, in the first aspect, it is according to claim 1 for fuel under high pressure pumping mechanism the invention provides one kind
Seal assembly.
The seal assembly can further include the device for being maintained at the seal assembly on pump head.
The extension of section of the pump head may include Part I and Part II, and the Part II is than described first
Point closer to the cam follower, wherein described second around the extension of section of a part for seal retainer
Divide, and the holding meanss may include to be located between the seal retainer and the Part II of the extension of section
Weld part.
The external diameter of the Part II of the extension of section is smaller than the external diameter of the Part I, wherein the sealing
The axial surface of part retainer is abutted and is arranged at the junction surface of first section of the extension of section and the second section
Shoulder, and the weld part can at least including being located at the shoulder of the extension of section and supporting for the seal retainer
Connect the weld seam between the surface of the shoulder.
Alternately or in addition, the weld part may include the outer surface of the Part II for being located at the extension of section
With the weld seam between the inner surface of the Part II of the seal retainer.
The cam follower may include tappet and the roller being arranged in the recess of the tappet, wherein by the pump head
Axial surface provide the first spring base.
The seal retainer may include deep-draw sheet material or low-carbon (LC) pipe.
Alternatively, the holding meanss may include to be arranged on the antelabium on seal, and the antelabium is positioned in and is arranged at
In recess on the extension of section of the pump head.The spring retainer can completely encapsulate the described of the pump head and prolong
Stretch section, and can by be arranged on the primary section of the close described pump head of the seal retainer end it is convex
The axial face of edge provides first spring base.
In another aspect, the present invention includes a kind of compression ignition high including seal assembly according to the first aspect of the invention
Material pumping mechanism.
Brief description of the drawings
With reference now to accompanying drawing, the present invention described by way of example, in the accompanying drawings：
Fig. 2 is the partial sectional view of pump group part according to the first embodiment of the invention；
Fig. 3 is the section view detail section view of the pump group part of Fig. 2；
Fig. 4 is the partial sectional view of pump group part second embodiment of the invention；And
Fig. 5 is the section view detail section view of the pump group part of Fig. 2.
Specific embodiment
In the description being presented below, such as upper and lower, above, below, the relative terms of top and bottom are carried out only about accompanying drawing
Use, rather than restricted.
Reference picture 2 and Fig. 3, first embodiment of the invention include pumping mechanism 102, and pumping mechanism 102 includes pump pressure
First 106, pump head 106 includes body section 130 and extension of section 132.Pump head 106 is arranged in plunger location hole 108
In top end, be provided with pumping chamber (not shown).The pumping element of the form of plunger 110 is taken to be partially positioned at plunger
In location hole 108, plunger 110 extends from pumping chamber along extension of section 132, and from the primary surface 134 of extension of section 132
It is prominent.The leader 120 of plunger location hole 108 works, so that plunger 110 is limited in into plunger location hole in the axial direction
In 108.
Cam follower 112 is provided below in plunger 110, cam follower 112 includes tappet 114 and cam rollers 116.
The bottom 140 of plunger 110 contacts the upside 150 of tappet 114, and cam rollers 116 are positioned in the downside for being arranged at tappet 114
In recess 154 on 152.
The extension of section 132 of pump head 106 includes Part I 136 and Part II 138, and Part II 138 is further
Body section 130 away from pump head 106 and with the external diameter reduced relative to Part I 136.Part I 136 and
The junction surface of two parts 138 forms shoulder 137 (pointing out in figure 3).
Pumping mechanism 102 further includes seal assembly 180, and seal assembly 180 includes seal 182 and is positioned at spring
Seal retainer 184 in chamber 142.
In the implementation method of Fig. 2 and Fig. 3, the of the extension of section 132 of the encapsulating pump head 106 of seal retainer 184
Both a part 136 and Part II 138.Seal retainer is shaped as the He of Part I 136 for abutting extension of section 132
The outer surface of Part II 138, i.e. seal retainer 184 are included on the first of the Part I 136 of extension of section 132
Tubular section 186, and including under the Part II 138 of extension of section 132 and second with bigger cross-sectional area
Tubular section 188.
Second time tubular section 188 includes the first top 190 of the Part II 138 around extension of section 132, and wraps
Include the second bottom 192 extended facing to cam follower 112 under extension of section 132.Seal 182 is partially positioned at
In the hypomere 192 of seal retainer 184, and partly prolong facing to cam follower 112 under seal retainer 184
Stretch.
Seal retainer 184 further includes flange 300, longitudinal axis of the flange 300 perpendicular to plunger location hole 108
A extends and contacts the axial surface 170 of pump head 106.
In first embodiment of the invention, the extension of section 132 of pump head 106 further includes end section 350,
End section 350 is provided with annular recess 352 at the point of neighbouring Part II 138.Seal 182 is provided with annular lip
360, annular lip 360 has the form with the complementation of recess 352.Once seal assembly has been assembled on pump head 106, sealing
The annular lip 360 of part 182 is just pushed into recess 352, so as to act as holding meanss, seal assembly 180 is maintained at
On pump head 106.
During operation pumping mechanism 102 and in pumping stroke, the rotation of cam (not shown) causes power via cam
Roller 116 and tappet 114 are delivered to plunger 110, so as to cause plunger 110 along the longitudinal axis A of plunger location hole 108 in plunger
Moved up in location hole 108, so as to cause the fuel in pumping chamber to be pressurized.
During further operation pumping mechanism 102 and in backstroke, when cam is further rotated, cam rollers
116th, tappet 114 and plunger 110 are moved down.Helical spring 118 is arranged in spring chamber 142, spring chamber 142 around
The extension of section 132 of pump head 106 and the part extended from plunger location hole 108 of plunger 110.Seal retainer 184
External diameter of the external diameter of flange 300 more than spring 118.
First top 160 of spring 118 provided against the axial face 302 of the flange 300 by seal retainer 184
One upper spring seat, and the second bottom 162 of spring 118 is connected at the second lower spring cup 172 of neighbouring tappet 114.Spring
Retainer 184 is formed by the material with enough hardness, so that the axial face 302 of flange 300 can be used as spring base.
Spring 118 ensures during backstroke, keeps contacting between cam rollers 116 and cam.
Then pumping and backstroke cause plunger 110 slidably to be moved back and forth in plunger location hole 108
Ground is mobile.
During pumping mechanism 102 is used, seal assembly 180 works, to prevent from making plunger inside plunger location hole 108
The fuel of 110 lubrications and the oil for lubricating the bottom 111 extended below seal 182 of cam follower 112 and plunger 110
Mixing.
First embodiment of the invention is improved compared with prior art, because need not crimp step will seal
Component 180 is maintained at the appropriate location on pump head 106.
Furthermore, it is not necessary that the antelabium used in being sealed in prior art embodiment or additional O-ring, so as to existing skill
Compared to allowing, cost is further reduced art implementation method and manufacture is simpler.
Make seal 182 extend (such as outside seal retainer 184) below seal retainer 184 to provide：
The material less than prior art embodiment is needed to form seal retainer.In addition, prior art embodiment is in pump
The thermal expansion and/or encapsulant that tighter tolerances are needed between pressure head 106 and seal retainer 184 to allow steel part are (all
Such as rubber) extension；Tolerance of the invention is relaxed compared with prior art embodiment.This can be realize pump optimal
Packaging provides added advantage.
The present invention can also provide seal assembly 180 as sub-component.Additionally, including seal assembly processing and transporting
180 and pump head 106 sub-component during, because antelabium 360 is in the recess 352 of the end section 350 of extension of section 132
Cooperation, keeps clamping between pump head 106 and seal assembly 180.
Fig. 4 and Fig. 5 illustrate alternate embodiments of the invention.It is identical with first embodiment, second embodiment
Seal assembly 280 includes seal 282 and seal retainer 284.However, the form of seal retainer 284 is different with component
In the form and component of first embodiment as described below.
Seal retainer 284 includes tubular section 288, and tubular section 288 includes the first top 290 and the second bottom
292, around the Part II 138 of the extension of section 132 of pump head 106, the second bottom 292 is in extension of section at the first top 290
132 extend underneath towards cam follower 112.Seal 282 is partially disposed the second bottom of seal retainer 284
In 288, and partly extend underneath towards cam follower 112 in seal retainer 284.
The axial top surface 294 of the upper end of seal retainer 284 abuts the Part I for being formed in extension of section 132
Shoulder 137 between 136 and Part II 138.
Seal retainer 284 is soldered to the Part II 138 of extension of section 132 by laser welded seam, so that conduct
Holding meanss, seal assembly 280 is maintained on pump head 106.
Weld part between the Part II 138 of seal retainer 284 and extension of section 132 or positioned at retainer
Between 284 top surface 294 and the shoulder 137 of extension of section 132, or inwall 287 positioned at seal retainer 184 one
Part and Part II 138 around outer wall section 139 between, or both.
The welding position between seal retainer 284 and extension of section 132 and welding degree can be selected so that seal
Longitudinal length (i.e. along the longitudinal axis A of plunger location hole 108) energy minimization of retainer 284.This is conducive to minimizing material
Material cost, and seal 282 is maximized from the extension of seal retainer 284.
With with first embodiment similar mode, during using pumping mechanism 102, seal assembly 280 works, with
Prevent from making inside plunger location hole 108 fuel that plunger 110 lubricates with make cam follower 112 and plunger 110 in sealing
The oil mixing of the lubrication of bottom 111 that part 282 extends below.
The seal retainer 284 of second embodiment can be formed by deep-draw sheet material.In an alternative embodiment, it is close
Sealing retainer 284 can be formed by low-carbon (LC) pipe.
Seal assembly 280 is provided by the way that seal retainer 284 is welded on the extension of section 132 of pump head 106
Sealing and holding.The first hard enough and thick spring base is provided by the axial face 302 of pump head 106.
Compared with prior art embodiment, the present invention can also reduces cost because seal retainer 284 is simple
Part, and can as needed for less than pump head 106 grade steel making.
Similar to first embodiment, in this second embodiment, it is not necessary to which seal retainer is crimped onto pump head,
Also without the seal lip or additional O-ring that are used in prior art embodiment, so that and prior art embodiment
Compared to the further reduces cost of permission, and more simply manufactured.
First embodiment is also similar to that, (for example seal keeps below seal retainer 284 to make seal 282
Outside device 284) extend provide it is less than prior art embodiment form seal retainer needed for material, and can
Relax the tolerance between pump head 106 and seal retainer 284.
Second embodiment of the present invention can also be provided as the seal assembly 280 of sub-component.Additionally, processing and transporting
During the defeated sub-component including seal assembly 280 and pump head 106, due to weld seam, pump head 106 and seal assembly 280 it
Between keep clamping.
Reference
First embodiment：
Pumping mechanism 102
Pump head 106
Plunger location hole 108
Plunger 110
Hole leader 120
Cam follower 112
Tappet 114
Cam rollers 116
Helical spring 118
Body section 130
Extension of section 132
Extension of section primary surface 134
Plunger bottom 140
Spring chamber 142
Tappet upside 150
Tappet downside 152
Recess 154
The Part I 136 of extension of section
Part II 138
Shoulder 137
The first top of spring 160
The second bottom of spring 162
Second lower spring cup 172
Seal assembly 180
Seal 182
Seal retainer 184
Tubular section 186 on the first of seal retainer
Second time tubular section 188
First top 190 of lower tubular section
Second bottom 192
Seal retainer flange 300
Flange axial face 302
The end section 350 of pump head
The annular recess 352 of end section
Sealing annular lip 360
Second embodiment：
Outer wall section 139
Seal assembly 280
Seal 282
Seal retainer 284
The inner wall section 287 of seal retainer
The tubular section 288 of seal retainer
The top 290 of tubular section
The bottom 292 of tubular section
Axial top surface (upper end of seal retainer) 294
Claims (11)
1. a kind of to be used for the seal assembly (180,280) that fuel under high pressure pumps mechanism (102), the pumping mechanism (102) includes
Pump head (106), plunger (110) and the cam follower (112) cooperated with the cam of rotation, the plunger (110) is by portion
It is positioned in the plunger location hole (108) being arranged in the pump head (106) and along the plunger location hole with dividing
(108) longitudinal axis (A) extends；
Wherein described pump head (106) includes primary section (130) and extension of section (132)；
A part (111) for wherein described plunger (110) extends from the extension of section (132), and the plunger (110)
The lower surface at end (140) place contacts the cam follower (112)；
Wherein, in use, during pumping stroke, the rotation of the cam causes will via the cam follower (112)
Power is delivered to the plunger (110), so as to cause the plunger (110) to move to pumping along the plunger location hole (108)
In chamber, the fuel in the pumping chamber is caused to be pressurized；And wherein during backstroke, it is disposed around the pump
In the spring chamber (142) of the extension of section (132) of pressure head (106) and abut the first spring base (170) and second spring
The spring of seat (172) keeps the contact between the cam follower (112) and the cam；
Wherein described seal assembly (180,280) includes seal (182,282) and seal retainer (184,284)；
Characterized in that, the seal (182,282) is partially disposed in the seal retainer (184,284),
And partly extend towards the cam follower (112) from the seal retainer (184,284).
2. seal assembly (180,280) according to claim 1, the seal assembly (180,280) further includes to use
In the holding meanss being maintained at the seal assembly (180,280) on the pump head (106).
3. seal assembly (280) according to claim 2, wherein, extension of section (132) bag of the pump head (106)
Include Part I (136) and Part II (138), the Part II (138) is than the Part I (136) closer to described
Cam follower (112), and wherein described seal retainer (284) a part around the extension of section (132)
The Part II (138)；
And wherein described holding meanss include the institute with the extension of section (132) positioned at the seal retainer (284)
State the weld part between Part II (138).
4. seal assembly (180) according to claim 3, wherein, the Part II of the extension of section (132)
(138) external diameter less than the Part I (136) external diameter, and wherein described seal retainer (284) axial table
The engagement of face (294) and the Part I (136) and the Part II (138) for being arranged on the extension of section (132)
Shoulder (137) at portion is abutted, and wherein described weld part at least includes the shoulder positioned at the extension of section (132)
(137) weld seam and between the axial surface (294) of the seal retainer.
5. seal assembly (180) according to claim 3 or 4, wherein, the weld part at least includes being located at the extension
The outer surface (139) of the Part II (138) of section (132) is with the seal retainer (284) around described
Weld seam between the inner surface (287) of two parts (138).
6. according to the described seal assembly of any one of claim 2 to 5 (180), wherein, the cam follower (112)
Including tappet (114) and the roller (116) being arranged in the recess of the tappet (154), and wherein by the pump head (106)
Axial surface (170) first spring base is provided.
7. according to the described seal assembly of any one of preceding claims (180,280), wherein, the seal retainer
(184,284) include deep-draw sheet material.
8. according to the described seal assembly of any one of claim 2 to 6 (180,280), wherein, the seal retainer
(184,284) include low-carbon (LC) pipe.
9. seal assembly (180) according to claim 2, wherein, the holding meanss include being arranged on the seal
(182) antelabium (360) on, the antelabium (360) is positioned in the extension of section for being arranged at the pump head (106)
(132) in the recess (352) in end section (350).
10. seal assembly (180) according to claim 1, wherein, the seal retainer (184) encapsulates institute completely
The extension of section (132) of pump head (106) is stated, and described is wherein provided by the axial face (302) of flange (300)
One spring base, the flange is arranged on the primary section of the close described pump head (106) of the seal retainer (184)
(130) end.
A kind of 11. high pressure fuel pumps including according to the described seal assembly of any one of preceding claims (180,280)
Send mechanism (102).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1418661.3 | 2014-10-21 | ||
| GBGB1418661.3A GB201418661D0 (en) | 2014-10-21 | 2014-10-21 | Pumping Mechanism |
| PCT/EP2015/069307 WO2016062431A1 (en) | 2014-10-21 | 2015-08-24 | Pumping mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106795845A true CN106795845A (en) | 2017-05-31 |
| CN106795845B CN106795845B (en) | 2020-04-17 |
Family
ID=52013326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580055779.XA Active CN106795845B (en) | 2014-10-21 | 2015-08-24 | Pumping mechanism |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3209880B1 (en) |
| KR (1) | KR102357678B1 (en) |
| CN (1) | CN106795845B (en) |
| GB (1) | GB201418661D0 (en) |
| WO (1) | WO2016062431A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6406035B2 (en) * | 2015-01-29 | 2018-10-17 | 株式会社デンソー | High pressure fuel pump |
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| US20020189589A1 (en) * | 2001-06-19 | 2002-12-19 | Masaaki Kato | Fuel supply system for alternative fuel |
| CN1437681A (en) * | 2000-04-18 | 2003-08-20 | 丰田自动车株式会社 | High-pressure pump |
| DE10322598A1 (en) * | 2003-05-20 | 2004-12-09 | Robert Bosch Gmbh | High-pressure piston pump for internal combustion engine, comprises a holding mechanism, which is radially centered through the cylinder bushing |
| CN1776215A (en) * | 2004-11-16 | 2006-05-24 | 株式会社电装 | High pressure fuel pump |
| CN105143656A (en) * | 2013-04-24 | 2015-12-09 | 罗伯特·博世有限公司 | Piston pump, in particular high-pressure pump for a fuel system for an internal combustion engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69938615T2 (en) * | 1999-02-09 | 2009-06-10 | Hitachi, Ltd. | High pressure fuel pump for an internal combustion engine |
| JP2006170184A (en) * | 2004-11-16 | 2006-06-29 | Denso Corp | High pressure fuel pump |
-
2014
- 2014-10-21 GB GBGB1418661.3A patent/GB201418661D0/en not_active Ceased
-
2015
- 2015-08-24 WO PCT/EP2015/069307 patent/WO2016062431A1/en active Application Filing
- 2015-08-24 KR KR1020177010019A patent/KR102357678B1/en active IP Right Grant
- 2015-08-24 CN CN201580055779.XA patent/CN106795845B/en active Active
- 2015-08-24 EP EP15763502.0A patent/EP3209880B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437681A (en) * | 2000-04-18 | 2003-08-20 | 丰田自动车株式会社 | High-pressure pump |
| US20020189589A1 (en) * | 2001-06-19 | 2002-12-19 | Masaaki Kato | Fuel supply system for alternative fuel |
| DE10322598A1 (en) * | 2003-05-20 | 2004-12-09 | Robert Bosch Gmbh | High-pressure piston pump for internal combustion engine, comprises a holding mechanism, which is radially centered through the cylinder bushing |
| CN1776215A (en) * | 2004-11-16 | 2006-05-24 | 株式会社电装 | High pressure fuel pump |
| CN105143656A (en) * | 2013-04-24 | 2015-12-09 | 罗伯特·博世有限公司 | Piston pump, in particular high-pressure pump for a fuel system for an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106795845B (en) | 2020-04-17 |
| EP3209880A1 (en) | 2017-08-30 |
| WO2016062431A1 (en) | 2016-04-28 |
| KR102357678B1 (en) | 2022-02-03 |
| GB201418661D0 (en) | 2014-12-03 |
| KR20170072886A (en) | 2017-06-27 |
| EP3209880B1 (en) | 2020-10-28 |
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Effective date of registration: 20200511 Address after: Babado J San Michael Patentee after: DELPHI TECHNOLOGIES IP Ltd. Address before: Luxemburg salad day Patentee before: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L. |
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