CN103154512B - High-pressure pump for a fuel injection device - Google Patents
High-pressure pump for a fuel injection device Download PDFInfo
- Publication number
- CN103154512B CN103154512B CN201180049355.4A CN201180049355A CN103154512B CN 103154512 B CN103154512 B CN 103154512B CN 201180049355 A CN201180049355 A CN 201180049355A CN 103154512 B CN103154512 B CN 103154512B
- Authority
- CN
- China
- Prior art keywords
- pressure pump
- pump
- eccentric
- bucket tappet
- rolling ring
- 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.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 title claims abstract description 11
- 239000007924 injection Substances 0.000 title claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 238000005461 lubrication Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000000314 lubricant Substances 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008685 targeting Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000005068 cooling lubricant Substances 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000576 supplementary effect Effects 0.000 description 1
Classifications
-
- 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
- F04B1/0413—Cams
- F04B1/0417—Cams consisting of two or more cylindrical elements, e.g. rollers
-
- 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
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
-
- 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
- F04B1/0439—Supporting or guiding means for the pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a high-pressure pump (1) for a fuel injection device, which can be used, in particular, for a common rail injection device of an internal combustion engine. The high-pressure pump (1) comprises a pump or drive shaft which is connected to an eccentric (6) in a rotationally fixed manner and at least one pump part (8). The pump part (8) comprising a cup-shaped tappet (13), a part piston (12) and a tappet spring (14) is inserted in a housing bore (16) of the engine block (3). A cup-shaped plunger (13) acted upon by a plunger spring (14) is connected to a component piston (12) guided so as to be able to move back and forth in a cylinder bore (19) of a cylinder section (20), said component piston delimiting a pump working chamber (21) connected to a suction valve (22) and a high-pressure valve (23). The drive connection between the cup tappet (13) and the eccentric (6) comprises a rolling ring (9) which is mounted rotatably on the eccentric (6) and on which a sliding plate (18) of the cup tappet (13) is supported in a force-fitting manner.
Description
Technical field
The present invention relates to the high-pressure pump of fuel injection device, it especially can be used in the common-rail injection system of internal combustion engine.Should
High-pressure pump includes a pump shaft or drive shaft, and this axle is connected without relative rotation with an eccentric and forms function with pump part
Connect.This includes a bucket tappet, and the pump part of a part piston and a push rod spring is arranged on engine block
In housing bore.With eccentric by bucket tappet formed drive connection and in a cylinder holes leading up and down part piston
Define a pump working chamber being connected with suction valve and high pressure valve.
Background technology
This high-pressure pump is used in vehicle structure, to provide necessary volume flow to common rail fuel injection apparatus
And required fluid pressure.High-pressure pump suffers from strong load, especially the load of machinery, thus have to material and to structure high will
Ask.The bucket tappet forming function connects with eccentric or cam track plays and is transformed into a part by the rotary motion of drive shaft
The reciprocating effect of oscillatory type of piston or pump piston.The reciprocating motion of part piston can be divided into an aspiration stroke and one
Compression stroke.In aspiration stroke, fuel is inhaled into pump working chamber by a suction valve.Fuel in compression stroke then
Compressed and a bin is transported to by a high pressure valve opened（Rail）In.Due between part piston and cylinder holes and
The friction occurring on bucket tappet targeting part employs the push rod spring of an applying reset force, and this push rod spring pushes away cup-shaped
The contact of force closure is produced between bar and eccentric.
DE10157076A1 discloses a push-rod piston for high-pressure pump, and it has one and includes an axial direction and footpath
Push rod and a piston being permanently connected with push rod to the roller of guiding.In order to guide this push rod of roller on push rod to be provided with
One roller boots, roller can rotationally be placed in this roller boots with axial gap.
High-pressure pump known in DE19907311A1, it has a drive shaft carrying eccentric, this eccentric
Interact with a pump part.It is provided with a support member or roller boots between part piston and eccentric, insert wherein
One roller can rolling on eccentric, can rotationally supporting.There is a crisis in the structure shown here, that is, be in directly
Connection function connect in component between enhanced friction and form relatively large abrasion.This enhanced frictional influence is to the rotation of roller
Transhipment is dynamic, thus may occur in which slip between roller and eccentric and so that abrasion is increased.
Content of the invention
The task of the present invention is, provides a kind of simplification, firm and friction between eccentric and bucket tappet
Optimised drive connection, it can bear high mechanical load and can simply manufacture.
This task will solve in this wise, and that is, the drive connection part between bucket tappet and eccentric includes one and can rotate
Be bearing in rolling ring on eccentric, be supported on this rolling ring to bucket tappet force closure.Therefore bucket tappet passes through energy
The rolling ring of rotating support forms drive connection with eccentric.
Cup-shaped pushing away is advantageously functioned as according to the rolling ring that present invention encirclement eccentric and relative eccentric wheel carry out relative motion
The drive connection of a uncoupling between bar and eccentric or the effect of power transmission.This configuration reduces the horizontal of bucket tappet
The side force when reception of power and therefore achievable bucket tappet guide on housing bore or the favourable reduction of cross force.According to this
The scheme of invention gives a simplification and firm drive connection between eccentric and bucket tappet, and it can advantageously hold
By strong load, especially mechanical load, this produces actively impact to its working life.In addition this friction optimize drive connection with
Friction ratio is unrelated, and this friction ratio in currently existing scheme between bucket tappet and eccentric, for example a roller with partially
It is to need to consider between heart wheel.Firm drive connection further according to the present invention is insensitive to different fuel viscosity.
Further advantage is that：Drive connection according to the present invention both can be diverted to have 1 weight camming or
Also can be diverted on the high-pressure pump of eccentric wheel system to have on 2 weight cammings or the high-pressure pump of eccentric wheel system.With wherein cup
The known schemes that shape push rod is supported on eccentric by the roller that a group is combined in roller boots are compared, by according to the present invention
Drive connection desirably reduce friction.Durable drive between eccentric and bucket tappet can be advantageously carried out by the present invention
It is dynamically connected, it can be used with the high dynamical system with corresponding high pump pressure power and revolution speed.Simultaneously according to the present invention can
The scheme of simple conversion has ensured and little reliable, the accurate work being associated of wearing and tearing, and thus generally reaches the raising of efficiency.
The preferably further configuration of of the present invention is：Bucket tappet is configured with one and is referred to as power in driving side and connects
The slide plate of receiving apparatus.The slide plate that this slide plate is especially pressed in bucket tappet and this position is fixing is supported on a contact surface
Surround on the contact surface belonging to the rolling ring of eccentric, wherein contact surface collectively constitutes a contact area.Slide plate is advantageously
Adapt to given load by a kind of and the material of lubrication state to manufacture.Wear strength in order to realize high for example proposes：Sliding
Plate to be manufactured by hard metal or ceramic material.In addition the bucket tappet being combined with slide plate is by structure that simplify and component optimization
Aobvious prominent.Premised on slide plate, bucket tappet advantageously neither needs the installation site orienting to relatively rotate also without nothing, by
This makes assembling simplify.Further according to the simplification of the present invention and cost optimization bucket tappet scheme with there are roller boots and combine
The known schemes of the bucket tappet of roller compare the advantage providing on a cost.
In order to reduce friction, rolling ring passes through a rolling bearing or sliding bearing can be rotatably supported on eccentric.
By the rolling bearing of market popularity or sliding bearing can achieve rolling ring firm on camshaft, effectively and on cost
Favourable supporting.Roller bearing is preferably suitable for as rolling bearing, because this bearing does not receive axial force.Due to required footpath
It is preferably used needle bearing to structure space I and carry out roller ring.
The feature of another special form of implementation of the present invention is：Slide plate and rolling ring each other against contact surface at least one
Individual it is configured to slight spherical or convex.This measure advantageously compensate for during fabrication due to PT positional tolerance and/or the shape of permission
The slight angular error that shape tolerance may occur in which.In addition this convex configuration is used for：The contact area between slide plate and rolling ring is made to contract
Little to linear contact lay, thus can advantageously reduce friction.
Increasing of working life in order to reach drive connection proposes according to the present invention：At least one of rolling ring or slide plate
Contact surface is by the material coating with high resistance against wear intensity.To this alternatively or additionally present invention additionally comprises at least one contact surface
Have reduce friction material coating.
According to another favourable form of implementation, the high-pressure pump being configured for insertion into formula pump is inserted with one as a construction unit
Enter in the housing bore that the formula pump housing inserts engine block.Have a cylinder holes in a post section of the plug-in type pump housing, it is determined
For part piston and simultaneously constitute pump working chamber.Invention advantageously provides obtaining the probability of a high-pressure pump, its
The middle principle by inserted pump is combined with drive connection, this drive connection have a rolling ring being bearing on eccentric and
The bucket tappet of one slide plate with combination.
The structure construction of the present invention also includes the different schemes for bucket tappet guiding.Preferably bucket tappet is outer
Portion guides, and wherein bucket tappet a pusher body is directed in the housing bore of engine block by a periphery.This cup
The external orientation of shape push rod can blocking member piston targeting part in post section deformation.This is proposed in conversion：Cup-shaped push away
Bar is directed on the post section of the plug-in type pump housing in inner side.
In another configuration of the present invention, a structure space is also provided with for the high-pressure pump being made to inserted pump excellent
The arrangement of the push rod spring changed.It is supported on a group for this push rod spring to be combined on the spring base in bucket tappet, wherein push rod
Spring is directed in the greater depth in bucket tappet.Opposition side end in order to guide push rod spring is inserted into the formula pump housing
One surrounded by edges.
In order to bucket tappet, the guiding in housing bore carries out targetedly and effectively lubricating the circle in pusher body
The lubrication groove that at least one is preferably cincture is had, this lubrication groove passes through space company in affiliated through hole and a push rod in side face
Connect.This measure will cause：Lubricant, the fuel particularly by high-pressure pump conveying enter into occur in the housing bore of engine block with
In cannelure between the periphery of bucket tappet.Thus can achieve the lubrication of bucket tappet optimizing, reducing friction.In addition
In order to lubricate and cooling lubricant by reach between eccentric and bucket tappet drive connection, determined by rolling ring and slide plate
Contact area in.As the slide plate of the supplementarys measure bucket tappet that this contact area is supplied with lubricant, to include at least one logical
Discharge orifice.
The configuration that other of the present invention is favourable can be obtained by the explanation of accompanying drawing, will be described in detail accompanying drawing in this explanation
Shown in embodiment.
Brief description
Fig. 1：There is a high pressure of the drive connection part being located between eccentric and bucket tappet according to the present invention
The sectional view of pump；
Fig. 2：The detail view of the bucket tappet according to Fig. 1.
Specific embodiment
The high-pressure pump 1 of a fuel injection device being used for internal combustion engine is represented, it is preferably determined for internal combustion in Fig. 1
The common-rail injection system of machine.Fuel is transported to a unshowned bin under stress by high-pressure pump 1（Rail）, fuel by
This bin is targetedly ejected in the affiliated combustor of internal combustion engine by fuel injector.High-pressure pump 1 constitutes a footpath
To piston pump, it is inserted in an engine block 3 or its housing as the inserted pump with the plug-in type pump housing 2.Inserting
Enter to be also connected with a low voltage unit 4 being referred to as cylinder head on the formula pump housing 2.One can rotating in engine block 3, there is axle
The drive shaft of line 5 is connected with an eccentric 6, and central axis 7 relative axis 5 of this eccentric have eccentric throw S.Should
Drive shaft can be an axle of internal combustion engine, such as its camshaft or differential shaft.
Eccentric 6 is surrounded by a rolling ring 9, this rolling ring pass through rolling bearing 10, especially one there is cylinder
The needle bearing of shape rolling element 11 can rotationally on support shaft eccentric 6 and this rolling ring and a pump part 8 bucket tappet
13 formation drive connections.Pump part 8 includes bucket tappet 13 and a push rod spring 14, remains a portion in bucket tappet
Part piston 12 or pump piston.Bucket tappet 13 pass through pusher body 15 non-without relative rotation engine block 3 a phase
To leading in the axis 5 of drive shaft housing bore 16 radially.Bucket tappet 13 embeds with passing through a shape sealed
Slide plate 18 in the receiving portion 17 of bucket tappet 13 and that position is fixing is supported on the rolling ring 9 of eccentric 6.In work shape
Eccentric 6 and the rolling ring 9 of rotation in state cause one of bucket tappet 13 and connected part piston 12 in association
Oscillating movement, this part piston leading in the cylinder holes 19 of a post section 20 of the plug-in type pump housing 2.
Part piston 8 defines a pump working chamber 21, this pump working chamber is configured with a suction valve 22 and one high
Pressure valve 23.Aspiration stroke in part piston 8（Move downward）When suction valve 22 open, thus can be by low voltage unit 4 to pump work
Make room 21 conveying fuel.When fuel by the high pressure valve 23 of an execution non-return valve function in a fuel conductor continuing transmission
In be transported to high-pressure storage（Rail）Before, the extrusion stroke of part piston 8（Move upwards）Lead to suction valve 22 closing and
The compression of fuel.Eccentric throw S between the axis 5 of drive shaft or pump shaft and the central axis 7 of eccentric 6 determines part simultaneously
The maximum stroke of piston 12.
The push rod spring 14 causing reset force in bucket tappet 13 is supported on inserted pump housing 2 and bucket tappet 13
Between one spring base 24 and cause the support of bucket tappet 13 force closure on rolling ring 9.Here push rod spring 14 surrounds
Take out the post section 20 connecing the formula pump housing 2, wherein push rod spring 14 a spring end is inserted into an edge 25 of the formula pump housing 2 and wraps
Enclose and another spring end entering in bucket tappet 13, being supported on spring base 24 is surrounded by pusher body 15 in outside.
In order to compensate little angular error, the angular error for example being caused by the machining tolerance of each component, surround eccentric
The rolling ring 9 of wheel 6 pass through spherical convex contact surface 27 be supported in the opposite of a respective configuration, i.e. bucket tappet 13
The contact surface 28 of slide plate 18 on.In order to realize optimal friction ratio, this is additionally provided at least one contact surface 27,28
One coating reducing friction.
Fig. 2 is represented bucket tappet 13 as details and is shown other details using the view amplifying.It is placed on bucket tappet
The work that part piston 12 is maintained in bucket tappet 13 to support the spring base of push rod spring 14 to simultaneously work as by 13, determination
With.For this, part piston 12 is inserted in a centre bore 26 of spring base 24 and by an end side overlapping hole 26
Edge 35 is keeping.Because pusher body 15 is directed in engine block 3 and part piston 12 is directed in post section 20 and by
This is directed in separate component, therefore part piston 12 is preferably imported in spring with the gap cooperation compensating small angle error
In the hole 26 of seat 24.As improving the measure of friction in the housing bore 16 of engine block 3 for the pusher body 15 in pusher body 15
Have one in circumferential surface 29 and be preferably the lubrication groove 30 of cincture and with the through hole 31 circumferentially arranging with being distributed.Therefore
Lubricant or the fuel being conveyed by high-pressure pump 1 can targetedly be entered into and diametrically be limited with housing bore 16 by pusher body 15
An annular gap 32（Fig. 1）In.Lubricant therefrom also towards eccentric 6 direction reach rolling ring 9 and slide plate 18 it
Between contact area 33（Fig. 1）And impact this contact area to lubricate and to cool down.Additionally multiple through flow holes 34 are had on slide plate 18,
They allow lubricant to flow through, targetedly to lubricate and cool down the component of contact area 33.
Claims (10)
1. the high-pressure pump (1) of fuel injection device, this high-pressure pump has a pump shaft, this pump shaft and eccentric (6) no phase
To rotationally connecting, this high-pressure pump also has the pump part at least one housing bore being inserted in engine block (3) (16)
(8), this pump part include one pass through bucket tappet (13) and described eccentric (6) formed drive connection, in a Ge Zhu area
In the cylinder holes (19) of section (20) the part piston (12) that is reciprocally directed to and one to described bucket tappet (13) plus
The push rod spring (14) carrying, wherein, described part piston (12) is limited one and is connected with suction valve (22) and high pressure valve (23)
Pump working chamber (21) it is characterised in that：Drive connection part between described bucket tappet (13) and described eccentric (6) includes
The rolling ring (9) that one can be rotatably supported on described eccentric (6), is supported on this to the force closure of described bucket tappet (13)
On rolling ring, wherein, described bucket tappet (13) includes a slide plate (18) in driving side, this slide plate as contact surface (28) with
The contact surface (27) surrounding the described rolling ring (9) of described eccentric (6) collectively forms contact area (33), for described slide plate
(18) the lubriation material supply of the contact area (33) and described rolling ring (9) between, has at least one in described slide plate (18)
Individual through flow hole (34), wherein, described slide plate (18) is put in described bucket tappet (13) as single part.
2. high-pressure pump according to claim 1 it is characterised in that：Described rolling ring (9) passes through rolling bearing (10) or sliding axle
Hold and can be rotatably supported on described eccentric (6).
3. high-pressure pump according to claim 2 it is characterised in that：Be provided for supporting the roller bearing of described rolling ring (9) or
Needle bearing is as rolling bearing (10).
4. the high-pressure pump according to claim 1 or 2 it is characterised in that：Described rolling ring (9) and/or slide plate (18) have one
Constitute spherical or convex contact surface (27,28).
5. the high-pressure pump according to claim 1 or 2 it is characterised in that：The described contact surface (27) of described rolling ring (9) and/or
The described contact surface (28) of described slide plate (18) reduces frictionally coated.
6. high-pressure pump according to claim 1 it is characterised in that：Plug-in type used by the described high-pressure pump (1) being configured for insertion into formula pump
The pump housing (2) inserts in the described housing bore (16) of described engine block (3), for the guiding of described part piston (12) and really
The described cylinder holes (19) determining the composition of pump working chamber (21) is bored in a post section (20) of the described plug-in type pump housing (2).
7. high-pressure pump according to claim 6 it is characterised in that：Described bucket tappet (13) passes through a pusher body in outside
(15) be directed in the described housing bore (16) of described engine block (3) or inner side the described plug-in type pump housing (2) post
Section is directed on (20).
8. high-pressure pump according to claim 1 it is characterised in that：Described push rod spring (14) is supported on spring base with spring end
(24), on, this spring base group is combined in described bucket tappet (13).
9. high-pressure pump according to claim 7 it is characterised in that：Lubriation material for the guiding of described bucket tappet (13) supplies
Give, described pusher body (15) have at least one lubrication groove (30), this lubrication groove pass through affiliated through hole (31) with described
One inner space of bucket tappet (13) connects.
10. high-pressure pump according to claim 1 it is characterised in that：Described high-pressure pump is used for the common-rail injection system of internal combustion engine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010042484 DE102010042484A1 (en) | 2010-10-15 | 2010-10-15 | High pressure pump for a fuel injection device |
| DE102010042484.6 | 2010-10-15 | ||
| PCT/EP2011/065472 WO2012048961A1 (en) | 2010-10-15 | 2011-09-07 | High-pressure pump for a fuel injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103154512A CN103154512A (en) | 2013-06-12 |
| CN103154512B true CN103154512B (en) | 2017-03-01 |
Family
ID=44583058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180049355.4A Expired - Fee Related CN103154512B (en) | 2010-10-15 | 2011-09-07 | High-pressure pump for a fuel injection device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2627903B1 (en) |
| CN (1) | CN103154512B (en) |
| DE (1) | DE102010042484A1 (en) |
| WO (1) | WO2012048961A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016102138A1 (en) * | 2014-12-24 | 2016-06-30 | Robert Bosch Gmbh | Pump unit for feeding fuel, preferably diesel fuel, to an internal combustion engine |
| DE102015111025B4 (en) | 2015-07-08 | 2024-07-25 | Volkswagen Ag | Self-lubricated high pressure pump |
| DE102016203768B4 (en) * | 2015-11-12 | 2017-10-26 | Robert Bosch Gmbh | Pump, in particular high-pressure pump of a fuel injection system, with a mounting assembly of plunger assembly and pump cylinder head, in particular by a latching connection between spring plate and plunger body |
| CN107939628B (en) * | 2017-12-26 | 2023-07-18 | 浙江三浪润滑科技有限公司 | Multi-head radial plunger pump and application method thereof |
| DE102018120777A1 (en) * | 2018-08-24 | 2020-02-27 | Volkswagen Aktiengesellschaft | High-pressure pump comprising pressure lubrication |
| WO2022066505A1 (en) | 2020-09-24 | 2022-03-31 | Cummins Inc. | Pump housing with relief cut for lobe clearance |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4315826C5 (en) * | 1993-05-12 | 2012-04-05 | Continental Teves Ag & Co. Ohg | Motor-pump assembly |
| JPH09303252A (en) * | 1996-05-13 | 1997-11-25 | Nissan Motor Co Ltd | Hydraulic pump device |
| IT1289796B1 (en) * | 1996-12-23 | 1998-10-16 | Elasis Sistema Ricerca Fiat | IMPROVEMENTS TO A PUMP DEVICE FOR SUPPLYING FUEL FROM A TANK TO AN INTERNAL COMBUSTION ENGINE. |
| DE19907311A1 (en) | 1999-02-22 | 2000-08-31 | Bosch Gmbh Robert | Hydraulic pump unit |
| EP1415092A1 (en) * | 2001-08-08 | 2004-05-06 | CRT Common Rail Technologies AG | High pressure feed pump |
| DE10157076A1 (en) | 2001-11-21 | 2003-05-28 | Bosch Gmbh Robert | Tappet with piston has axial and/or radial roller guide adjustable on tappet by means of roller shoe fixed to tappet |
| DE10158768B4 (en) * | 2001-11-29 | 2012-10-25 | Schaeffler Technologies AG & Co. KG | Radial piston pump |
| WO2006037676A1 (en) * | 2004-10-06 | 2006-04-13 | Siemens Aktiengesellschaft | Radial piston pump comprising a roller tappet |
| DE102006041673A1 (en) * | 2006-02-20 | 2007-08-23 | Robert Bosch Gmbh | High pressure pump especially for fuel injection in IC engine has the cam follower supported axially by hardened low wear surfaces |
| DE102006043187B3 (en) * | 2006-09-14 | 2008-04-03 | Siemens Ag | Fluid pump, in particular high-pressure fuel pump for injection systems of internal combustion engines |
| DE102006060680A1 (en) * | 2006-12-21 | 2008-06-26 | Schaeffler Kg | Rolling bearings for a radial piston pump |
-
2010
- 2010-10-15 DE DE201010042484 patent/DE102010042484A1/en not_active Withdrawn
-
2011
- 2011-09-07 WO PCT/EP2011/065472 patent/WO2012048961A1/en active Application Filing
- 2011-09-07 CN CN201180049355.4A patent/CN103154512B/en not_active Expired - Fee Related
- 2011-09-07 EP EP11754404.9A patent/EP2627903B1/en not_active Not-in-force
Also Published As
| Publication number | Publication date |
|---|---|
| EP2627903A1 (en) | 2013-08-21 |
| CN103154512A (en) | 2013-06-12 |
| DE102010042484A1 (en) | 2012-04-19 |
| WO2012048961A1 (en) | 2012-04-19 |
| EP2627903B1 (en) | 2016-07-13 |
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