CN100489305C - Piston pump - Google Patents
Piston pump Download PDFInfo
- Publication number
- CN100489305C CN100489305C CNB2005800433632A CN200580043363A CN100489305C CN 100489305 C CN100489305 C CN 100489305C CN B2005800433632 A CNB2005800433632 A CN B2005800433632A CN 200580043363 A CN200580043363 A CN 200580043363A CN 100489305 C CN100489305 C CN 100489305C
- Authority
- CN
- China
- Prior art keywords
- reciprocating pump
- contact
- fastening flange
- pump
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 20
- 238000012423 maintenance Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 235000012431 wafers Nutrition 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Images
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to a high pressure fuel pump (10) for the motor vehicle internal combustion engine, which includes a pump case (12) and a fixed flange (22). The fixed flange is fixed on the pump case (12) and is provided with at least one connecting region (36), and in the connecting region one connecting element (42) functions at the installation position. With the connecting element the piston pump (10) is fixed on the holding body (20). So it suggests that the connecting region (36) departs from the holding body (20) for a distance at the installing position.
Description
Technical field
The present invention relates to a kind of reciprocating pump, in particular for the high pressure fuel pump of internal combustion engine of motor vehicle.
Background technique
This reciprocating pump is open with the form of single cylinder piston pump by DE 103 22 599 A1, and this reciprocating pump can be fixed on cylinder of internal combustion engine by fastening flange and cover.Fastening flange be welded on the pump case of covering reciprocating pump and in the mounting point whole face abut on the cylinder head.
Summary of the invention
Task of the present invention is, the further reciprocating pump of the described type of structure beginning part, make it can through for example be fixed on the cylinder head for a long time reliably, structure is little, in light weight and low cost of manufacture.
According to the present invention, a kind of reciprocating pump is proposed, have pump case and have a fastening flange, this fastening flange is fixed on the pump case and has at least one join domain, on this join domain, in the mounting point, act on a connecting element, can make reciprocating pump be fixed on one by this connecting element keeps on the body, wherein: described join domain in the mounting point with keep the body partition distance and, a contact area has at least two towards the surface of contact that keeps body to point to, these surface of contact keep on the body and they are arranged in the plane that has different distance with respect to common reference plane at least like this before installation being installed to abut in after keeping on the body at least range selector, and fastening flange is compacted and/or be pressed in the maintenance body when making on being installed in the maintenance body.
Advantageously, join domain be configured in the contact area or should the zone on protuberance, this contact area abuts in the mounting point at least range selector and keeps on the body.
Advantageously, contact area comprises first surface of contact adjacent with pump case, second surface of contact and a basal plane of seeing to be arranged on the join domain back from pump case, wherein, basal plane is arranged in reference surface, and, be installed to keeping body to see the previous dynasty, the plane of first surface of contact has bigger distance from reference plane than the plane of second surface of contact.
Advantageously, first surface of contact passes through a section near join domain interrupts, and this section is arranged in a plane wrong backward with respect to the plane of first surface of contact.
Advantageously, at least one surface of contact, be provided with at least one and clamp seamed edge.
Advantageously, at least one clamps seamed edge by being formed on the edge of fastening flange to the seamed edge that keeps body to give prominence in the mounting point.
Advantageously, fastening flange has a welding section towards pump case, and this welding section has the thickness littler than the remaining part of fastening flange, and the weld seam between welding section and pump case is a through welding.
Advantageously, the welding section is with respect to adjacent, wrong backward towards the surface of contact that keeps body to point to.
Advantageously, fastening flange is made by punching press and cold forming by sheetmetal.
Advantageously, fastening flange is externally settled around pump case and is had at least two outstanding flank sections, has a join domain in each flank section.
Advantageously, this reciprocating pump is the high pressure fuel pump that is used for internal combustion engine of motor vehicle.
Advantageously, described join domain is pressed into described protuberance.
Advantageously, first surface of contact is concentric with this pump case.
Advantageously, described section extends on 20 ° to 90 ° angular range.
Advantageously, described clamping seamed edge is the clamping seamed edge that a plurality of cross one another or wafers are smoked the swage shape.
Advantageously, described outstanding seamed edge is suppressed.
Advantageously, described welding section is a stamped.
Advantageously, fastening flange is made by quality steel plate.
Advantageously, fastening flange is made by compacting.
The feasible clamping length that can realize the increasing of connecting element of distance between join domain arranged according to the present invention and the maintenance body especially when using screw or bolt as connecting element, prevents connecting element because using process relaxes by this measure.Can guarantee reciprocating pump and good connection that keeps body on long-time in this way.
At this wall thickness that requirement significantly reduces for fastening flange, because be that the required clamping length of reliable connection is not by material thickness but by join domain and keeps the distance between the body to realize.Manufacture cost descends in addition, because by avoiding the contact of fastening flange face keeping having reduced the requirement very high in other cases to the planeness of corresponding contact face on the body.
If join domain is configured to protuberance, then just reach higher-strength in the join domain by moulding.To cause the clamping of fastening flange, its mode when mounted be that it abuts at least regionally and keeps on the body and in this distortion in that the surface of contact of anteposition in Different Plane is installed.This causes the additional clamping force on the connecting element.Be arranged in surface of contact in the Different Plane in addition and be formed into a little and keep in the body, this causes the reciprocating pump fastening flange and keeps that friction increases between the body, avoids thus reciprocating pump being moved and the connection of connecting element being relaxed by horizontal acceleration.Because the raising by friction needs clamping force on the less connecting element, for example when using screw, can use common screw on the market of 8.8 grades of strength grades for example as connecting element, but these screw low prices buy.The clamping seamed edge that proposes according to the present invention can improve the friction between fastening flange and the maintenance body once more, and this has also reduced the requirement of strength to connecting element.
Main good being welded to connect that combines with laser welding technology between responsible fastening flange and the pump case of the weld seam of through welding, this is welded to connect has high resistance to vibration.In order on the one hand to produce weld seam with less bonding power, this reduces manufacture cost, and enough wall thickness of overall simultaneously assurance fastening flange, and this flange can be in welded seam area for example be reduced to weld penetration by being compressed on aspect the wall thickness.The basic rigidity of fastening flange still remains unchanged.
Description of drawings
Describe particularly preferred embodiment of the present invention with reference to the accompanying drawings in detail.Shown in the accompanying drawing:
Fig. 1 has the stereogram of the reciprocating pump of fastening flange;
The pump case of reciprocating pump and fastening flange section among Fig. 2 Fig. 1;
The bottom view of the fastening flange of Fig. 3 Fig. 1;
Fig. 4 is along the section of Fig. 3 center line IV-IV;
The details V of Fig. 5 Fig. 4;
The view of similar Fig. 5 of a conversion mode of execution of Fig. 6;
The view of similar Fig. 5 of another conversion mode of execution of Fig. 7;
Details VIII among Fig. 8 Fig. 7; And
The view of similar Fig. 3 of a conversion mode of execution of Fig. 9 fastening flange.
Embodiment
Reciprocating pump totally has label 10 in Fig. 1.It is used as the high pressure fuel pump on the internal combustion engine of motor vehicle, and wherein Motor Vehicle and internal-combustion engine do not illustrate in the drawings.
This reciprocating pump 10 has pump case 12, has circular external frame in its lower area 14 in Fig. 1.Also be configured with a centering section 16 in this lower area 14, this centering section can import in the receiving bore 18 that keeps body (referring to Fig. 2), and this maintenance is embodied in the cylinder cap 20 that is configured to only schematically show.
In the border circular areas 14 of pump case 12, welding a fastening flange 22 on this pump case.This flange has central section 24 (referring to Fig. 3 and 4), the hole 26 that in this section, has a circle, and the fringe region in this hole is configured to weld section 28, and this section welds with pump case 12 mutually at 30 places (Fig. 2).At this weld seam 30 by through welding.The generation of this weld seam 30 by directly on pump case 12, exist above the weld seam 30 around groove 32 become easily, this groove for example produces by boring a hole.
Fastening flange 22 usefulness high-quality steel are made as sheet forming spare by punching press and cold forming.Almost have substantially the same material thickness or thickness of slab everywhere at this.Only in this welding section 28, the thickness of fastening flange 22 obviously reduces.
Two opposed and radially outstanding flank section 34a and 34b in moulding on the central section 24 of fastening flange 22, they construct mutually the samely.Therefore only describe the flank section 34a on the left side among Fig. 2 to 4 below for simplicity in detail.
As by appreciable among Fig. 2 to 5, in flank section 34a, suppress a protuberance 36 that in plan view, has circular contour.In this protuberance, has a through hole 37 with one heart with described external frame.Support the screw head 40 of screw 42 common on the market (for example strength grade 8.8 grades M6 screw) by the ring in the moulding 38 (perhaps optionally settling under the situation of packing ring) in the centre at protuberance 36 upside.The thread section 44 of screw 42 passes through hole 37 and is tightened in the cylinder head 20.Screw 42 constitutes the connecting element with cylinder head 20, acts in other words above it because it is supported on the protuberance 36, and protuberance 36 is also referred to as join domain.Be configured to swell 36 by join domain, this protuberance has distance D with respect to cylinder head 20 in mounting point shown in Figure 2.
The zone that is positioned at protuberance 36 outsides of fastening flange 22 is called as contact area 46 except that welding section 28, because they at least blockiness abut on the cylinder head 20 in the mounting point, promptly contact cylinder head.By appreciable in Fig. 3 and 5, contact area 46 has two surface of contact 48 and 50 and basal planes 52 of illustrating with point altogether with filling up as especially, this basal plane be in fastening flange 22 contact area 46 in the mounting point on a side of cylinder head 20.
Extend in the hole 26 that first surface of contact 48 centers in the central section 24 of fastening flange 22 with one heart, with pump case 12 direct neighbors.At least one zone of first surface of contact 48 is placed between the protuberance 36 and pump case 12 that constitutes a join domain in this embodiment thus.Second surface of contact 50 is positioned on the outermost edge of flank section 34a, promptly sees that from pump case 12 it has the roughly profile of a semicircular ring in plan view in the back of protuberance 36.Basal plane 52 be arranged in fastening flange 22 be positioned at beyond two first surface of contact 48 and 50 and swell 36 and welding section 28 beyond the zone.
Find out as knowing especially by Fig. 5, before fastening flange 22 is installed on the cylinder head 20, promptly be tightened in screw 42 before, surface of contact 48 and 50 and basal plane 52 look up longitudinal axis 54 sides and be in the Different Plane.Reference plane 56 are by basal plane 52 definition.See that towards cylinder head 20 plane 58 at first surface of contact, 48 places and reference plane 56 have the distance D bigger than the plane 60 at surface of contact 50 places
48, this plane only has distance D to reference plane 56
50
Surface of contact 48 with 50 and basal plane 52 be positioned at wherein these different planes 56,58 and 60 have following effect: if screw 42 is tightened, then fastening flange 22 distortion (this is not shown in the accompanying drawings), thus second surface of contact 50 also abuts on the cylinder head 20 except that first surface of contact 48.Therefore the surface pressure that obtains increasing on surface of contact 48 and 50, this is under the suitable situation of the clamping force that is caused by screw 42 even can cause: first surface of contact 48 and second surface of contact 50 enter into or are pressed into cylinder head 20 at least partly slightly.In reciprocating pump 10 and internal combustion engine operation, can imitate entirely thus and stop fastening flange 22 on transverse to the direction of longitudinal axis 54, to move.
At this, first surface of contact 48 with the protuberance 36 direct neighbors zones in surface pressure high especially because when tightening, should at first recline in the zone with cylinder head 20.As by also finding out among Fig. 5, to find out from cylinder head 20, welding section 28 is with respect to wrong slightly backward with first surface of contact 48 of its direct neighbor.Can prevent when setting up weld seam 30 that thus first surface of contact 48 from damaging.
A conversion mode of execution of fastening flange shown in Fig. 6 22.And in the following embodiments, have identical label with element and the zone that previously described element and zone have an identical functions here.To explain no longer in detail them.
Fastening flange 22 shown in Fig. 6 on the radially outstanding edge of flank section (flank section 34a also only is shown among Fig. 6), in the zone of second surface of contact 50, have one sharp-pointed, in the mounting point to the edge that cylinder head 20 directions are stretched out, this edge constitutes and clamps seamed edge 62.Thus in the mounting point and after reciprocating pump 10 is installed on the cylinder head 20, strengthen fastening flange 22 once more and be connected with friction between the cylinder head 20 and prevent moving once more better transverse to longitudinal axis 54.
As seen from Figure 7, clamp seamed edge 62 accordingly and also can in second surface of contact 50, be pressed into portion 64 and produce by taper.Be pressed into the configuration that wafer that portion 64 can produce second surface of contact 50 is smoked the swage shape by these tapers of corresponding layout.
Learnt the another configuration of fastening flange by Fig. 9: according to this configuration, surface of contact 48 can be interrupted by a section 66 in the zone of protuberance 36, and this section is wrong backward with respect to first plane 58, for example is arranged in the reference plane 56 or second plane 60.Constitute two section 48a and 48b that are separated from each other of first surface of contact 48 thus.In the present embodiment, section 66 extends on 20 ° angular range in the both sides of the medial axis 68 of flank section 34a and 34b (extend at the center that this passes two protuberances 36 or screw 42 this medial axis 68).But also can consider, in the medial axis 68 both sides extend 10 ° in the medial axis 68 both sides extend 45 °.
Under the situation of the fastening flange 22 that constitutes like this, it has the anti-extra high stability that tilts around axis 68 after installation.This is based on: higher when mounted clamping force is imported in the zone line of two section 48a of first surface of contact 48 and 48b.
Claims (19)
1. reciprocating pump (10), have pump case (12) and have a fastening flange (22), this fastening flange is fixed on the pump case (12) and has at least one join domain (36), on this join domain, in the mounting point, act on a connecting element (42), can make reciprocating pump (10) be fixed on one by this connecting element keeps on the body (20), it is characterized in that: described join domain (36) in the mounting point with keep body (20) partition distance and, a contact area (46) has at least two towards the surface of contact (48 that keeps body (20) to point to, 50), these surface of contact abut in after keeping body (20) to go up on the maintenance body and they are positioned at like this before installation with respect to common reference plane (56) at least and have different distance (D being installed at least range selector
48, D
50) plane (58,60) in, make when being installed in when keeping body (20) to go up fastening flange (22) compacted and/or be pressed in the maintenance body (20).
2. according to the reciprocating pump (10) of claim 1, it is characterized in that: join domain be configured in the contact area (46) or should the zone on protuberance (36), this contact area abuts in the mounting point at least range selector and keeps on the body (20).
3. according to the reciprocating pump (10) of claim 1 or 2, it is characterized in that: contact area (46) comprises first surface of contact (48) adjacent with pump case (12), second surface of contact (50) and a basal plane (52) of seeing to be arranged on join domain (36) back from pump case (12), wherein, basal plane (52) is arranged in reference surface (56), and, be installed to keeping body (20) to see the previous dynasty, the plane (58) of first surface of contact (48) has bigger distance (D from the plane (60) of reference plane (56) ratio second surface of contact (50)
48).
4. according to the reciprocating pump of claim 3, it is characterized in that: first surface of contact (48) passes through a section (66) near join domain (36) interrupts, and this section is arranged in wrong backward plane (56), a plane with respect to first surface of contact (48) (58).
5. according to the reciprocating pump (10) of claim 1 or 2, it is characterized in that: at least one surface of contact (50), be provided with at least one and clamp seamed edge (62).
6. according to the reciprocating pump (10) of claim 5, it is characterized in that: at least one clamps seamed edge (62) by being formed on the edge of fastening flange (22) to the seamed edge that keeps body (20) to give prominence in the mounting point.
7. according to the reciprocating pump (10) of claim 1 or 2, it is characterized in that: fastening flange (22) has a welding section (28) towards pump case (12), this welding section has the little thickness of remaining part than fastening flange (22), and the weld seam (30) between welding section (28) and pump case (12) is a through welding.
8. according to the reciprocating pump (10) of claim 7, it is characterized in that: welding section (28) is with respect to adjacent, wrong backward towards the surface of contact (48) that keeps body (20) to point to.
9. according to the reciprocating pump (10) of claim 1 or 2, it is characterized in that: fastening flange (22) is made by punching press and cold forming by sheetmetal.
10. according to the reciprocating pump (10) of claim 1 or 2, it is characterized in that: fastening flange (22) is externally settled around pump case (12) and is had at least two outstanding flank section (34a, 34b), in each flank section, has a join domain (36).
11. the reciprocating pump (10) according to claim 1 is characterized in that: this reciprocating pump (10) is the high pressure fuel pump that is used for internal combustion engine of motor vehicle.
12. the reciprocating pump (10) according to claim 2 is characterized in that: described join domain is pressed into described protuberance (36).
13. the reciprocating pump (10) according to claim 3 is characterized in that: first surface of contact (48) is concentric with this pump case.
14. the reciprocating pump (10) according to claim 4 is characterized in that: described section (66) extends on 20 ° to 90 ° angular range.
15. the reciprocating pump (10) according to claim 5 is characterized in that: described clamping seamed edge (62) is the clamping seamed edge that a plurality of cross one another or wafers are smoked the swage shape.
16. the reciprocating pump (10) according to claim 6 is characterized in that: described outstanding seamed edge is suppressed.
17. the reciprocating pump (10) according to claim 7 is characterized in that: described welding section (28) is a stamped.
18. the reciprocating pump (10) according to claim 9 is characterized in that: fastening flange (22) is made by quality steel plate.
19. the reciprocating pump (10) according to claim 9 is characterized in that: fastening flange (22) is made by compacting.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004063073 | 2004-12-28 | ||
| DE102004063073.9 | 2004-12-28 | ||
| DE102005007806.0 | 2005-02-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101080571A CN101080571A (en) | 2007-11-28 |
| CN100489305C true CN100489305C (en) | 2009-05-20 |
Family
ID=38907359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800433632A Active CN100489305C (en) | 2004-12-28 | 2005-12-13 | Piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100489305C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109072840A (en) * | 2016-04-18 | 2018-12-21 | 大陆汽车有限公司 | Combination unit and component including shell and flange |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010001965A1 (en) * | 2010-02-16 | 2011-08-18 | Robert Bosch GmbH, 70469 | Cylinder head for a high-pressure fuel pump |
| DE102010011456A1 (en) * | 2010-03-15 | 2011-09-15 | Schaeffler Technologies Gmbh & Co. Kg | Pump, in particular piston pump for high or low pressure |
| CN103216369A (en) * | 2012-01-19 | 2013-07-24 | 博世有限公司 | Fuel pump with integrated pressure sensor |
| DE102013222402A1 (en) * | 2013-11-05 | 2015-05-21 | Robert Bosch Gmbh | Electric machine with a mounting flange |
| DE102016213451A1 (en) | 2016-05-19 | 2017-11-23 | Robert Bosch Gmbh | High-pressure fuel pump |
| DE102016217409A1 (en) * | 2016-09-13 | 2018-03-15 | Robert Bosch Gmbh | High-pressure fuel pump |
| DE102017207207A1 (en) * | 2017-04-28 | 2018-10-31 | Robert Bosch Gmbh | Fuel pump |
-
2005
- 2005-12-13 CN CNB2005800433632A patent/CN100489305C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109072840A (en) * | 2016-04-18 | 2018-12-21 | 大陆汽车有限公司 | Combination unit and component including shell and flange |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101080571A (en) | 2007-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100489305C (en) | Piston pump | |
| JP2017223233A (en) | Manufacturing method of high pressure pump for fuel system of internal combustion engine | |
| CN102869876B (en) | Fuel feed device and method for producing such a fuel feed device | |
| US6705619B2 (en) | Cylinder head gasket with peripheral bead | |
| CN103661609B (en) | A kind of auto body and subframe mount structure | |
| CN101910688A (en) | Flat seal | |
| CN102548683A (en) | Rivet, riveting device and riveting method | |
| CN113857646B (en) | Fixing method of part to be welded suitable for linear friction welding | |
| CN101446252A (en) | Gasoline engine high pressure fuel distribution pipe and manufacturing method thereof | |
| CN204184494U (en) | Vehicle fitting | |
| JP4164553B2 (en) | Molding method of delivery pipe mounting bracket member | |
| CN220577052U (en) | Bracket for mounting gearbox and vehicle | |
| KR102604769B1 (en) | Multi-Face Contact type High Pressure Pump Mounting Sevice | |
| CN211540069U (en) | Welding fixture for manufacturing main rib of fan mesh enclosure | |
| CN213298547U (en) | Nut mounting structure | |
| JPH03134376A (en) | Gasket | |
| CN219382621U (en) | Front wheel shield assembly and vehicle with same | |
| CN216993805U (en) | Air pump mounting structure and vehicle | |
| CN215846603U (en) | Fixing device for fender lamp box | |
| CN212130629U (en) | Engine and vehicle | |
| CN210388104U (en) | Welding tool for welding connecting sheet of walking aid vehicle | |
| CN201576975U (en) | Common base structure of generator set | |
| CN110067629B (en) | Exhaust pipe assembly, compensating bracket and design method | |
| JPH0215065Y2 (en) | ||
| JPH0464778A (en) | Multiple cylinder metal gasket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |