CN1364220A - Distributor injection pump - Google Patents
Distributor injection pump Download PDFInfo
- Publication number
- CN1364220A CN1364220A CN01800226A CN01800226A CN1364220A CN 1364220 A CN1364220 A CN 1364220A CN 01800226 A CN01800226 A CN 01800226A CN 01800226 A CN01800226 A CN 01800226A CN 1364220 A CN1364220 A CN 1364220A
- Authority
- CN
- China
- Prior art keywords
- roller
- injection pump
- supporting element
- type injection
- housing
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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
- 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
- F02M41/10—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 pump pistons acting as the distributor
- F02M41/12—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 pump pistons acting as the distributor the pistons rotating to act as the distributor
- F02M41/121—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 pump pistons acting as the distributor the pistons rotating to act as the distributor with piston arranged axially to driving shaft
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a distributor injection pump comprising a housing (10) and a roller ring (12) which is positioned in said housing in an adjustable manner and is provided with at least one roller (20). A cam plate (28) for actuating a pump piston can be supported on said roller. The roller is mounted in the roller ring using a bolt (24) which extends in a radial direction in relation to the central axis of the roller ring. The aim of the invention is to prevent damage to the housing caused by the radial force exerted outwards on the bolt that occurs when the roller is under stress. To achieve this, a support element (40) is provided on the radial end of the bolt (24).
Description
Prior art
The present invention relates to a kind of distributor type injection pump, it has a housing and a roller circle that is placed in movably in this housing, this roller circle is equiped with at least one roller, a cam disk can be supported on this roller, this cam disk is used to handle a pump piston, wherein, in the roller circle, bearing pin extends with respect to the central axis of roller circle this roller diametrically by a pin bearing.
The effect of such distributor type injection pump is, is the fuel of the correct amount of cylinder supply of internal-combustion engine at correct time point.For this purpose pump piston is designed to make it to be connected with cam disk.When cam disk rotates with respect to the roller circle, its surface that is provided with boss roll extrusion on roller.In this way, cam disk obtains a kind of to-and-fro motion, and this motion is delivered to pump piston.Because produce a cyclic force component that acts on the bearing pin in the power that once acts on the bearing pin in back and forth, it radially outwards acts on the bearing pin with respect to roller circle central axis.This can cause, and loads when high at the roller circle, and the bearing pin that is made of a steel is usually pounded or headed into its radial outer end portion in the position relative with this end of the housing that is formed from aluminium usually.The functional reliability of this meeting The Long-term Effect jet pump.
Therefore, task of the present invention is, improves a kind of distributor type injection pump that starts described type of formation like this, makes and avoids the bearing pin of roller circle to head in the housing of distributor type injection pump reliably.
Advantage of the present invention
In the distributor type injection pump of the feature with claim 1, the effect of supporting element is that the axial force that acts on the bearing pin is imported in the housing of distributor type injection pump on large size.Like this, make that the concentrated wear power that is acted on the housing by bearing pin is reduced greatly, thereby can not cause material damage.
Be designed to according to a preferred embodiment of the present invention, supporting element is a cramp frame that is placed on the roller circle, and it is sandwiched in the hole of roller circle.This cramp frame covers the axial outer end portion of bearing pin, and, when axial force of effect on bearing pin, it outwards towards the housing distortion of distributor type injection pump, imports in the housing on a big area thereby rest on the axial force that also will act on the bearing pin on the housing.The preferred material of selecting steel as this cramp frame.
Be designed to according to a modification form of implementation, this supporting element is placed on the housing.In this form of implementation, this supporting element that preferably is made of a steel constitutes as embedded piece, and it stops direct contact the between bearing pin that is made of a steel and the housing that is formed from aluminium.In this form of implementation, the axial force that acts on the bearing pin also at first is delivered on the supporting element, is imported in the housing on large size by supporting element again.
Favourable scheme of the present invention is provided by dependent claims.
Accompanying drawing
By a preferred implementing form explanation the present invention, be described in the drawings this preferably below
Form of implementation.Be illustrated as:
Fig. 1 illustrates the part of a distributor type injection pump of the present invention with a schematic cross sectional views;
Fig. 2 illustrates the part of a roller circle with a three-dimensional view, and this roller circle is used in the distributor type injection pump among Fig. 2; And
With another three-dimensional view the part of this roller circle is shown as 3.
Embodiment describes
In Fig. 1, with a schematic partial view distributor type injection pump of the present invention is shown, it is used for fuel is sprayed into the cylinder of internal-combustion engine.This jet pump comprises a housing 10, settles a roller circle 12 in housing 10.Roller circle 12 has an inner ring 14 and an outer ring 16, forms the receiving cavity 18 of an annular between them.Settled a plurality of rollers 20 in this annular receiving cavity 18, they are bearing on the bearing pin 24 by an axle sleeve 22 respectively.Each bearing pin 24 extends diametrically with respect to the central axis of roller circle 12, and is accommodated in the inner ring 14 with its radial inner end, and its radial outer end portion is accommodated in the outer ring 16.Between outer ring 16 and each roller 20, also settled a block plate 26.
Be provided with a live axle 36, it can rotate cam disk 28 by coupling 38.So cam disk 28 is run on roller 20 towards roller 20, the surface that is provided with boss with it, produces a kind of periodicity to-and-fro motion of cam disk 28 thus, it is delivered to pump piston, and pump piston is finally carried the fuel that will spray.
For adjust the internal-combustion engine that has been supplied to fuel, with respect to the discharge time point of crankshaft angles, also be provided with a (not shown) injection advance angle regulator, by means of it, roller circle 12 can turn over a definite angle in housing.The structure of this injection advance angle regulator and the mode of action are conventional, well-known, therefore no longer provide here.
A supporting element 40 (also seeing Fig. 2 and Fig. 3) has been installed on roller circle 12, and it has two by the end 42 of bending, and they are used as the spring connecting sheet.Each is inserted in the hole 44 by the end of bending, and this hole 44 constitutes on the outer ring 16 of roller circle 12.Supporting element 40 extends on an angular range, and this angular range is far longer than the angular range of institute of the radial outer end portion extend through of corresponding bearing pin 24, and has covered this radial outer end portion of this corresponding bearing pin substantially.Protrude in for fear of supporting element 40 outside the excircle of outer ring 16, each supporting element is positioned in the groove 46, and this groove 46 extends between two holes 44 that are the corresponding configuration of same supporting element.
When distributor type injection pump moves,, produce a axial force thus along the arrow F directive effect among Fig. 3 if on roller 20, act on a big power.When causing that thus bearing pin 24 moves, it with supporting element 40 to external pressure, thereby supporting element rests on the housing 10 of distributor type injection pump.In this way, produce a big area of contact, the axial force that is acted on is imported in the housing on this area.
Can particularly use the material of steel as supporting element 40.Also can consider to use suitable plastic in addition.With shown in the form of implementation for each bearing pin uses an independent supporting element different, also may be thought of as all bearing pins and only use a supporting element.The supporting element made from flat material shown in can also replacing for example uses a wire cramp frame, it or surround whole outer ring 16 and be positioned in the axial outer end portion zone of bearing pin 24, perhaps be sandwiched in independently in the hole 44 respectively.
Claims (9)
1. distributor type injection pump, have a housing (10) and a roller circle (12) that is placed in movably in this housing, this roller circle is equiped with at least one roller (20), a cam disk (28) can be supported on this roller, this cam disk is used to handle a pump piston, wherein, this roller is bearing in the roller circle by a bearing pin (24), bearing pin extends diametrically with respect to the central axis of roller circle, it is characterized in that, in the radial outer end portion of bearing pin (24), settle a supporting element (40).
2. distributor type injection pump as claimed in claim 1 is characterized in that, supporting element (40) is placed on the roller circle (12).
3. distributor type injection pump as claimed in claim 2 is characterized in that, supporting element (40) is a cramp frame, and it is sandwiched in the hole (44) on the roller circle.
4. distributor type injection pump as claimed in claim 3 is characterized in that, this cramp frame is a spring bow clevis.
5. as the described distributor type injection pump of one of claim 2 to 4, it is characterized in that the roller circle is provided with a groove (46) that is used for described supporting element (40).
6. distributor type injection pump as claimed in claim 1 is characterized in that, described supporting element is placed on the housing (10).
7. distributor type injection pump as claimed in claim 6 is characterized in that, supporting element (40) is an embedded piece.
8. the described distributor type injection pump of one of claim as described above is characterized in that supporting element (40) is made with metal.
9. as the described distributor type injection pump of one of claim 1 to 7, it is characterized in that supporting element is made of plastic.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10006558A DE10006558A1 (en) | 2000-02-15 | 2000-02-15 | Distributor injection pump |
| DE10006558.9 | 2000-02-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1364220A true CN1364220A (en) | 2002-08-14 |
| CN1184415C CN1184415C (en) | 2005-01-12 |
Family
ID=7630892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018002269A Expired - Lifetime CN1184415C (en) | 2000-02-15 | 2001-02-08 | Distributor injection pump |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1208296B1 (en) |
| JP (1) | JP4612264B2 (en) |
| CN (1) | CN1184415C (en) |
| BR (1) | BR0104484B1 (en) |
| DE (2) | DE10006558A1 (en) |
| PL (1) | PL350829A1 (en) |
| RU (1) | RU2267639C2 (en) |
| WO (1) | WO2001061179A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006028348B3 (en) | 2006-06-20 | 2007-10-31 | Siemens Ag | Rolling bearing device has locking element arranged so that in cavity of cylinder-shaped element it is coupled with positive locking with regard to axial and rotational direction in regard to center axis of cylinder-shaped element |
| EP2853696B1 (en) * | 2013-09-27 | 2017-03-01 | Aktiebolaget SKF | Mechanical system, injection pump and valve actuator comprising such a mechanical system and manufacturing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935678U (en) * | 1982-08-31 | 1984-03-06 | マツダ株式会社 | diesel engine fuel injection pump |
| DE3331725C2 (en) * | 1983-09-02 | 1995-01-26 | Bosch Gmbh Robert | Front cam drive especially for fuel injection pumps |
| JPH1054321A (en) * | 1996-08-08 | 1998-02-24 | Toyota Motor Corp | Roller bush for fuel injection pump |
-
2000
- 2000-02-15 DE DE10006558A patent/DE10006558A1/en not_active Ceased
-
2001
- 2001-02-08 RU RU2001130340/06A patent/RU2267639C2/en active
- 2001-02-08 CN CNB018002269A patent/CN1184415C/en not_active Expired - Lifetime
- 2001-02-08 WO PCT/DE2001/000471 patent/WO2001061179A2/en active IP Right Grant
- 2001-02-08 JP JP2001560004A patent/JP4612264B2/en not_active Expired - Fee Related
- 2001-02-08 EP EP01911433A patent/EP1208296B1/en not_active Expired - Lifetime
- 2001-02-08 DE DE50108447T patent/DE50108447D1/en not_active Expired - Lifetime
- 2001-02-08 BR BRPI0104484-2A patent/BR0104484B1/en not_active IP Right Cessation
- 2001-02-08 PL PL01350829A patent/PL350829A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| BR0104484A (en) | 2002-01-08 |
| EP1208296A2 (en) | 2002-05-29 |
| DE10006558A1 (en) | 2001-08-30 |
| WO2001061179A3 (en) | 2002-03-07 |
| BR0104484B1 (en) | 2009-08-11 |
| EP1208296B1 (en) | 2005-12-21 |
| WO2001061179A2 (en) | 2001-08-23 |
| JP2003522903A (en) | 2003-07-29 |
| DE50108447D1 (en) | 2006-01-26 |
| CN1184415C (en) | 2005-01-12 |
| RU2267639C2 (en) | 2006-01-10 |
| JP4612264B2 (en) | 2011-01-12 |
| PL350829A1 (en) | 2003-02-10 |
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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 | ||
| ASS | Succession or assignment of patent right |
Owner name: BOSCH AUTOMOTIVE DIESEL SYSTEMS CO., LTD. Free format text: FORMER OWNER: ROBERT BOSCH CO., LTD. Effective date: 20081017 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081017 Address after: No. 17, Wuxi New District, Jiangsu, Xinhua Road Patentee after: Bosch Automotive Diesel Oil System Co., Ltd. Address before: Stuttgart, Germany Patentee before: Robert Bosch GmbH |
|
| C56 | Change in the name or address of the patentee |
Owner name: BOSCH AUTOMATIVE DISEL SYSTEM CO., LTD. Free format text: FORMER NAME: BOSCH AUTOMOTIVE DIESEL OIL SYSTEM CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 214028 Xinhua Road national hi tech Industrial Development Zone, Jiangsu, China, No. 17, No. Patentee after: BOSCH AUTOMOTIVE DIESEL SYSTEMS CO., LTD. Address before: 214028 No. 17, Wuxi New District, Jiangsu, Xinhua Road Patentee before: Bosch Automotive Diesel Oil System Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20050112 |
|
| CX01 | Expiry of patent term |