CN212027963U - Low-abrasion fuel injection pump - Google Patents
Low-abrasion fuel injection pump Download PDFInfo
- Publication number
- CN212027963U CN212027963U CN202020407950.7U CN202020407950U CN212027963U CN 212027963 U CN212027963 U CN 212027963U CN 202020407950 U CN202020407950 U CN 202020407950U CN 212027963 U CN212027963 U CN 212027963U
- Authority
- CN
- China
- Prior art keywords
- oil
- cam
- shaft
- camshaft
- 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.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 239000000446 fuel Substances 0.000 title claims abstract description 10
- 238000005299 abrasion Methods 0.000 title claims abstract description 5
- 239000003921 oil Substances 0.000 abstract description 42
- 239000010687 lubricating oil Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Abstract
A low-abrasion fuel injection pump comprises a pump body, wherein a plunger and barrel assembly is arranged in the pump body; a tappet body and an oil outlet valve are respectively arranged above and below the plunger matching part; a cam cavity is formed in the bottom of the pump body; a cam shaft is rotatably arranged in the cam cavity; the camshaft comprises a shaft body, a shaft diameter and a cam, wherein the shaft diameter and the cam are integrally connected with the shaft body; chamfers are machined on two sides of the axial end surface; an oil filling port is formed in the outer side of the cam cavity, and a bolt is connected with an internal thread of the oil filling port; a transverse oil duct is processed on the side wall of the cam cavity; the oiling mouth is communicated with the transverse oil duct, a plurality of oil distributing openings are arranged on one side of the oiling mouth, and the oil distributing openings correspond to the shaft diameters on the camshaft. Compared with the prior art, the utility model discloses a low wearing and tearing injection pump on the basis that does not change the camshaft, only needs to increase the chamfer of shaft diameter both sides, when it rotates, can splash lubricating oil to the cam on, makes the cam during operation reduce with the frictional resistance of tappet body, improves the output efficiency of injection pump.
Description
Technical Field
The utility model relates to a fuel injection pump equipment field specifically indicates a low wearing and tearing fuel injection pump.
Background
The injection pump is an important component part on the automobile diesel engine, drives the tappet body through the camshaft and then promotes the plunger and be reciprocating motion and carry out the fuel feeding, because the cam of camshaft often rubs with the gyro wheel of tappet body, can cause wearing and tearing, and long-time back can lead to camshaft drive tappet body during gyro wheel unsmooth, reduces the output efficiency of injection pump.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, and a low wearing and tearing injection pump is provided. In order to solve the technical problem, the utility model discloses a technical scheme is:
a low-abrasion oil injection pump comprises a pump body, a camshaft, a plunger and barrel assembly, a tappet body, an oil outlet valve and a high-pressure oil pipe joint, wherein the plunger and barrel assembly is arranged in the pump body; the tappet body is arranged below the plunger and barrel assembly; the oil outlet valve is arranged above the plunger matching part; a spring is arranged between the plunger matching part and the tappet body; the high-pressure oil pipe joint is arranged above the pump body; a cam cavity is formed in the bottom of the pump body; the cam shaft is rotatably arranged in the cam cavity; the camshaft comprises a shaft body, a shaft diameter and a cam, wherein the shaft diameter and the cam are integrally connected with the shaft body; the cams are arranged between the shaft diameters at intervals; chamfers are machined on two sides of the axial end surface; an oil filling port is formed in the outer side of the cam cavity, and a bolt is connected with an internal thread of the oil filling port; a transverse oil duct is processed on the side wall of the cam cavity; the oil filling port is communicated with the transverse oil duct, and a plurality of oil distributing ports are arranged on one side of the oil filling port; the oil distribution port corresponds to the shaft diameter of the camshaft.
Further, the chamfer size is 5mmx55 °.
Further, a rubber gasket is arranged between the bolt and the oil filling opening.
Compared with the prior art, the utility model discloses a low wearing and tearing injection pump carries out the oiling through the oil filler point to the diameter of axle of camshaft, on the basis that does not change the camshaft, only needs to increase the chamfer of diameter of axle both sides, when it rotates, can splash lubricating oil to the cam on, make the cam during operation reduce with the frictional resistance of tappet body, improve the output efficiency of injection pump.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the camshaft of the present invention;
wherein, 1, a pump body, 2, a camshaft, 3, a plunger matching part, 4, a tappet body, 5, an oil outlet valve, 6, a high-pressure oil pipe joint, 7, a spring, 8, a cam cavity, 9, an oil injection port, 10, a bolt, 11, a rubber gasket, 12, a transverse oil passage, 13, an oil distribution port, 21, a shaft body, 22, a shaft diameter, 23, a cam, 24 and a chamfer angle,
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below.
As shown in fig. 1 and 2, a low-wear fuel injection pump comprises a pump body 1, a camshaft 2, a plunger and barrel assembly 3, a tappet body 4, an oil outlet valve 5 and a high-pressure oil pipe joint 6, wherein the plunger and barrel assembly 3 is arranged in the pump body 1; the tappet body 4 is arranged below the plunger and barrel assembly 3; the oil outlet valve 5 is arranged above the plunger matching part 3; a spring 7 is arranged between the plunger and barrel assembly 3 and the tappet body 4; the high-pressure oil pipe joint 6 is arranged above the pump body 1; a cam cavity 8 is formed in the bottom of the pump body 1; the camshaft 2 is rotatably arranged in the camshaft cavity 8; the camshaft 2 comprises a shaft body 21, and a shaft diameter 22 and a cam 23 which are integrally connected with the shaft body 21, wherein the shaft diameter 22 is used for supporting the camshaft 2, and the cam 23 is used for driving a roller at the bottom of the tappet body 4; the cams 23 are arranged between the shaft diameters 22 at intervals; chamfers 24 are machined on two sides of the end face of the shaft diameter 22; an oil filling port 9 is formed in the outer side of the cam cavity 8, a bolt 10 is connected with the oil filling port 9 through an internal thread, a rubber gasket 11 is arranged between the bolt 10 and the oil filling port 9, the oil filling port 9 is used for filling lubricating oil, and after oil filling is finished, sealing is carried out through the bolt 10 and the rubber gasket 11; a transverse oil duct 12 is processed on the side wall of the cam cavity 8; the oil filling port 9 is communicated with the transverse oil duct 12, and a plurality of oil distributing ports 13 are arranged on one side of the oil filling port 9; the oil distribution port 13 corresponds to the shaft diameter 22 of the camshaft 2.
In this embodiment, the size of the chamfer 24 is 5mmx55 °, and when the fuel injection pump operates, the chamfer 24 on the shaft diameter 22 is used to splash lubricating oil onto the cam 23, so that the friction force between the cam 23 and the roller at the bottom of the tappet body 4 can be effectively reduced.
The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.
Claims (3)
1. A low-abrasion oil injection pump comprises a pump body, a camshaft, a plunger and barrel assembly, a tappet body, an oil outlet valve and a high-pressure oil pipe joint, wherein the plunger and barrel assembly is arranged in the pump body; the tappet body is arranged below the plunger and barrel assembly; the oil outlet valve is arranged above the plunger matching part; a spring is arranged between the plunger matching part and the tappet body; the high-pressure oil pipe joint is arranged above the pump body and is characterized in that: a cam cavity is formed in the bottom of the pump body; the cam shaft is rotatably arranged in the cam cavity; the camshaft comprises a shaft body, a shaft diameter and a cam, wherein the shaft diameter and the cam are integrally connected with the shaft body; the cams are arranged between the shaft diameters at intervals; chamfers are machined on two sides of the axial end surface; an oil filling port is formed in the outer side of the cam cavity, and a bolt is connected with an internal thread of the oil filling port; a transverse oil duct is processed on the side wall of the cam cavity; the oil filling port is communicated with the transverse oil duct, and a plurality of oil distributing ports are arranged on one side of the oil filling port; the oil distribution port corresponds to the shaft diameter of the camshaft.
2. The low-wear fuel injection pump of claim 1, wherein: the chamfer size is 5mmx55 °.
3. The low-wear fuel injection pump of claim 1, wherein: and a rubber gasket is arranged between the bolt and the oil filling port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020407950.7U CN212027963U (en) | 2020-03-26 | 2020-03-26 | Low-abrasion fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020407950.7U CN212027963U (en) | 2020-03-26 | 2020-03-26 | Low-abrasion fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212027963U true CN212027963U (en) | 2020-11-27 |
Family
ID=73488231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020407950.7U Expired - Fee Related CN212027963U (en) | 2020-03-26 | 2020-03-26 | Low-abrasion fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212027963U (en) |
-
2020
- 2020-03-26 CN CN202020407950.7U patent/CN212027963U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201127 |