CN219774246U - High-efficient lubricated direct injection type fuel injection pump - Google Patents
High-efficient lubricated direct injection type fuel injection pump Download PDFInfo
- Publication number
- CN219774246U CN219774246U CN202320516907.8U CN202320516907U CN219774246U CN 219774246 U CN219774246 U CN 219774246U CN 202320516907 U CN202320516907 U CN 202320516907U CN 219774246 U CN219774246 U CN 219774246U
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- China
- Prior art keywords
- oil
- plunger
- injection pump
- injection
- hole
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- 238000002347 injection Methods 0.000 title claims abstract description 84
- 239000007924 injection Substances 0.000 title claims abstract description 84
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 238000005461 lubrication Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 22
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 2
- 239000003921 oil Substances 0.000 abstract description 67
- 239000010687 lubricating oil Substances 0.000 abstract description 13
- 239000000945 filler Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000295 fuel oil Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The utility model provides a high-efficient lubricated direct injection type injection pump, includes the injection pump body, and the plunger seat is installed to injection pump body upper end, and plunger seat upper end processing has inlet port, oil gallery and fuel cavity, plunger seat internally mounted has plunger matching parts, plunger matching parts peripheral processing has annular oil storage tank, processing has the oil filler point to annular oil storage tank on plunger seat and the injection pump body. Compared with the prior art, the high-efficiency lubrication direct injection type oil injection pump has the advantages that the annular oil groove is additionally formed in the surface of the plunger matching part, lubricating oil is stored in the annular oil groove, in the moving process, the lubricating oil lubricates the surface of the plunger seat, the friction resistance of the plunger matching part in moving is effectively reduced, the service life of the plunger matching part is prolonged, meanwhile, in the subsequent maintenance process, the oil injection pump is not required to be disassembled, and the lubricating oil can be injected into the plunger matching part through the oil injection hole on the side face.
Description
Technical Field
The utility model relates to the field of fuel injection pumps, in particular to a high-efficiency lubrication direct injection fuel injection pump.
Background
At present, a plunger matching part is arranged in a direct injection type fuel injection pump, the plunger matching part reciprocates to pump fuel in a fuel cavity, and the plunger matching part is highly precisely matched with a plunger seat, so that the friction resistance of the plunger matching part is high in the motion process, and after the direct injection type fuel injection pump is used for a period of time, the surface of the plunger matching part is easily worn due to the lack of good lubrication, so that the plunger matching part is replaced.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a high-efficiency lubrication direct injection type fuel injection pump aiming at the defects of the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a high-efficient lubricated direct injection type injection pump, includes the injection pump body, and the plunger seat is installed to injection pump body upper end, and plunger seat upper end processing has inlet port, oil gallery and fuel cavity, plunger seat internally mounted has plunger matching parts, plunger matching parts peripheral processing has annular oil storage tank, processing has the oil filler point to annular oil storage tank on plunger seat and the injection pump body.
Further, the first oil filler hole has been seted up to the plunger seat side, and the second oil filler hole has been seted up to the injection pump body side, and first oil filler hole and second oil filler hole are in same one side, be provided with the adjusting washer between plunger seat and the injection pump body upper end and make first oil filler hole and second oil filler hole align.
Furthermore, one side of the second oil filling hole is plugged through a plug.
Further, a first sealing ring, a second sealing ring and a third sealing ring are arranged between the side face of the plunger seat and the oil injection pump body, the first sealing ring is located above the oil inlet and the oil return hole, the second sealing ring is located between the oil inlet and the oil return hole and the oil injection hole, and the third sealing ring is located below the oil injection hole.
Compared with the prior art, the high-efficiency lubrication direct injection type oil injection pump has the advantages that the annular oil groove is additionally formed in the surface of the plunger matching part, lubricating oil is stored in the annular oil groove, in the moving process, the lubricating oil lubricates the surface of the plunger seat, the friction resistance of the plunger matching part in moving is effectively reduced, the service life of the plunger matching part is prolonged, meanwhile, in the subsequent maintenance process, the oil injection pump is not required to be disassembled, and the lubricating oil can be injected into the plunger matching part through the oil injection hole on the side face.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
wherein, 1, the oil injection pump body, 2, the plunger seat, 3, the oil inlet, 4, the oil return, 5, the fuel cavity, 6, the plunger matching parts, 7, the tooth sleeve, 8, the adjusting tooth bar, 9, the spring upper seat, 10, the spring lower seat, 11, springs, 12, annular oil storage tanks, 13, first oil filling holes, 14, second oil filling holes, 15, adjusting gaskets, 16, plugs, 17, first sealing rings, 18, second sealing rings, 19 and third sealing rings.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below.
As shown in fig. 1, the high-efficiency lubrication direct injection type fuel injection pump comprises a fuel injection pump body 1, wherein a plunger seat 2 is arranged at the upper end of the fuel injection pump body 1, an oil inlet hole 3, an oil return hole 4 and a fuel cavity 5 are formed in the upper end of the plunger seat 2, a plunger matching part 6 is arranged in the plunger seat 2, a tooth sleeve 7 is arranged on the outer side below the plunger seat 2, the interior of the tooth sleeve 7 is connected with the plunger matching part 6 in a matched manner, one side of the tooth sleeve 7 is connected with an adjusting tooth bar 8, a spring upper seat 9 is arranged on the outer side of the tooth sleeve 7, a spring lower seat 10 is arranged below the tooth sleeve 7, a spring 11 is arranged between the spring lower seat 9 and the spring upper seat 10 in a sleeved mode at the tail end of the plunger matching part 6, and the plunger matching part moves in the fuel cavity under the action of a cam shaft and a spring in the fuel injection pump to perform fuel injection.
In order to reduce friction resistance between the plunger matching part 6 and the surface of the plunger sleeve 2 during movement, an annular oil storage groove 12 is formed in the periphery of the plunger matching part 6, lubricating oil is stored in the annular oil storage groove 12, so that when the plunger matching part moves, the lubricating oil can be used for lubricating the surface of a plunger seat, friction resistance is reduced, meanwhile, the lubricating oil forms an oil film on the wall of the plunger sleeve, fuel oil in a fuel oil chamber can be prevented from leaking, a first oil injection hole 13 is formed in the side face of the plunger seat 2, a second oil injection hole 14 is formed in the side face of the fuel injection pump body 1, the first oil injection hole 13 and the second oil injection hole 14 are positioned on the same side of the fuel injection pump, two sides of the upper end of the plunger seat 2 are arranged on the fuel injection pump body 1, an adjusting gasket 15 is arranged between the upper end of the plunger seat 2 and the fuel injection pump body 1, the first oil injection hole 13 and the second oil injection hole 14 are aligned through increasing and decreasing the adjusting gasket 15, and when maintenance is performed, the lubricating oil is filled into the annular oil storage groove through the oil injection hole, and at ordinary times, one side of the second oil injection hole 14 is blocked through 16.
In this embodiment, two annular oil storage grooves 12 are machined on the plunger-coupling element 6, the first oil injection hole 13 and the second oil injection hole 14 are aligned with the upper annular oil storage groove 12, and during the movement of the plunger-coupling element 6, lubricating oil can leak into the annular oil storage groove below, so that a lubricating oil film is formed on the surface of the plunger seat, for example, three annular oil storage grooves are machined on the plunger-coupling element, and the oil injection holes are aligned with the middle annular oil storage groove.
A first sealing ring 17, a second sealing ring 18 and a third sealing ring 19 are arranged between the side face of the plunger seat 2 and the oil injection pump body 1, the first sealing ring 17 is arranged above the oil inlet hole and the oil return hole, the second sealing ring 18 is arranged between the oil inlet hole and the oil return hole and the oil injection hole, the third sealing ring 19 is arranged below the oil injection hole, and the leakage of fuel oil and lubricating oil is prevented by arranging three sealing rings.
The utility model is not limited to the embodiments described, but a person skilled in the art may make modifications or changes without departing from the spirit of the utility model, i.e. the scope of the disclosure, and the scope of the utility model is defined by the claims.
Claims (4)
1. The utility model provides a high-efficient lubricated direct injection type injection pump, includes the injection pump body, and the plunger seat is installed to injection pump body upper end, and plunger seat upper end processing has inlet port, oil gallery and fuel cavity, plunger seat internally mounted has plunger coupling spare, its characterized in that: the periphery of the plunger coupling part is provided with an annular oil storage tank, and oil injection holes are formed in the plunger seat and the oil injection pump body and are aligned to the annular oil storage tank.
2. The efficient lubrication direct injection fuel injection pump of claim 1, wherein: the plunger seat is provided with a first oil injection hole on the side face, the side face of the oil injection pump body is provided with a second oil injection hole, the first oil injection hole and the second oil injection hole are positioned on the same side, and an adjusting gasket is arranged between the plunger seat and the upper end of the oil injection pump body to enable the first oil injection hole and the second oil injection hole to be aligned.
3. The efficient lubrication direct injection fuel injection pump of claim 2, wherein: one side of the second oil filling hole is plugged through a plug.
4. The efficient lubrication direct injection fuel injection pump of claim 1, wherein: a first sealing ring, a second sealing ring and a third sealing ring are arranged between the side face of the plunger seat and the oil injection pump body, the first sealing ring is located above the oil inlet and the oil return hole, the second sealing ring is located between the oil inlet and the oil return hole and the oil injection hole, and the third sealing ring is located below the oil injection hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320516907.8U CN219774246U (en) | 2023-03-16 | 2023-03-16 | High-efficient lubricated direct injection type fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320516907.8U CN219774246U (en) | 2023-03-16 | 2023-03-16 | High-efficient lubricated direct injection type fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219774246U true CN219774246U (en) | 2023-09-29 |
Family
ID=88109267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320516907.8U Active CN219774246U (en) | 2023-03-16 | 2023-03-16 | High-efficient lubricated direct injection type fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219774246U (en) |
-
2023
- 2023-03-16 CN CN202320516907.8U patent/CN219774246U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |