CN204664833U - A kind of engine oil pump - Google Patents
A kind of engine oil pump Download PDFInfo
- Publication number
- CN204664833U CN204664833U CN201520175954.6U CN201520175954U CN204664833U CN 204664833 U CN204664833 U CN 204664833U CN 201520175954 U CN201520175954 U CN 201520175954U CN 204664833 U CN204664833 U CN 204664833U
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- China
- Prior art keywords
- oil
- pressure
- pump
- engine
- pump housing
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- 239000010705 motor oil Substances 0.000 title claims abstract description 44
- 239000003921 oil Substances 0.000 claims abstract description 110
- 239000010721 machine oil Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 abstract description 11
- 230000009123 feedback regulation Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of engine oil pump, comprise the pump housing and at the connected pump cover in pump housing side, be provided with oil suction chamber in the pump housing and go out oil pocket, described oil pump also comprises the safety valve being located at pressure-limit valve in described pump cover and being located in the described pump housing, is provided with and is communicated with engine cylinder-body main oil gallery and the machine oil in main oil gallery is guided to the feedback oil duct of pressure-limit valve end in the pump housing.Engine oil pump of the present utility model, by arranging two working pressure modulating valve, be respectively engine oil pump pressure-limiting valve and safety valve, pressure-limit valve adopts motor main oil gallery engine oil pressure feedback regulation control mode, thus the working machine oil pressure stability of engine lubrication system can be improved, especially high-speed working condition, motor main oil gallery engine oil pressure affects little by oil temperature and system resistance, safety valve can the most high workload engine oil pressure of limiting engine lubrication system, thus can improve reliability and the Security of the work of lubrication system.
Description
Technical field
The utility model belongs to technical field of engines, and specifically, the utility model relates to a kind of engine oil pump.
Background technique
Traditional automobile engine oil pump is provided with a System Computer oil pressure modulating valve, i.e. engine oil pump pressure-limiting valve.This pressure-limit valve is generally arranged in oil pump hyperbaric chamber side, and when the engine oil pressure of oil pump hyperbaric chamber side is greater than the cracking pressure of pressure-limit valve, pressure-limit valve is opened to oil pump low-pressure cavity or oil sump internal drainage, thus regulates the engine oil pressure of lubrication system.
The oil pump of general this structure we be referred to as engine oil pressure feedback regulation oil pump after pump, this structure oil pump is carry out the pressure of regulating system by engine oil pressure feedback control pressure-limit valve work after pump to the fuel delivery of whole engine lubrication system, and engine lubrication system engine oil pressure affects larger by oil temperature, system resistance.Especially in engine low-temperature cold starting operating mode, cold operation operating mode etc., engine lubrication system engine oil pressure is very high, has influence on reliability and the Security of system works.
Model utility content
The utility model provides a kind of engine oil pump, and object improves the working machine oil pressure stability of engine lubrication system.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of engine oil pump, comprise the pump housing and at the connected pump cover in pump housing side, be provided with oil suction chamber in the pump housing and go out oil pocket, described oil pump also comprises the safety valve being located at pressure-limit valve in described pump cover and being located in the described pump housing, is provided with and is communicated with engine cylinder-body main oil gallery and the machine oil in main oil gallery is guided to the feedback oil duct of pressure-limit valve end in the pump housing.
Described pump cover is connected with the described pump housing by bolt.
Be provided with the pressure limiting valve opening holding described pressure-limit valve in described pump cover, the sidewall at pressure limiting valve opening place be provided with respectively with described feedback oil duct, described oil suction chamber with described go out three oilholes being communicated with of oil pocket.
The sidewall at described pressure limiting valve opening place is arranged with described go out the oilhole that is communicated with of oil pocket between the oilhole be communicated with described feedback oil duct and the oilhole be communicated with described oil suction chamber.
The spool of described pressure-limit valve is two-part structure.
The two ends of the described pump housing are respectively provided with first mounting flange, and one of them first mounting flange is provided with the feedback oilhole be communicated with described feedback oil duct, another first mounting flange be provided with described go out the oil outlet that is communicated with of oil pocket.
Be provided with in the described pump housing and hold the safe valve opening of described safety valve, the end of safe valve opening be provided with described go out the oilhole that is communicated with of oil pocket, the sidewall at safe valve opening place is provided with and connects open to atmosphere oil leak hole and balance pressure port.
Described safety valve comprises steel ball, spring and plug screw.
Described pump cover is provided with the second mounting flange and is arranged on the sump strainer on the second mounting flange.
Described pump housing side is provided with chain wheel cover, is provided with the sprocket wheel be arranged on oil pump shaft in chain wheel cover, and is provided with drain oil bottom chain wheel cover.
Engine oil pump of the present utility model, by arranging two working pressure modulating valve, be respectively engine oil pump pressure-limiting valve and safety valve, pressure-limit valve adopts motor main oil gallery engine oil pressure feedback regulation control mode, thus the working machine oil pressure stability of engine lubrication system can be improved, especially high-speed working condition, motor main oil gallery engine oil pressure affects little by oil temperature and system resistance, safety valve can the most high workload engine oil pressure of limiting engine lubrication system, thus can improve reliability and the Security of the work of lubrication system; And by arranging chain wheel cover, chain wheel cover being wrapped in inside sprocket wheel, reducing the risk that chain stirs machine oil, improving machine oil air content.
Accompanying drawing explanation
Fig. 1 is the perspective view of oil pump external view of the present utility model;
Fig. 2 is the sectional structure schematic diagram of engine oil pump pressure-limiting valve of the present utility model;
Fig. 3 is the sectional structure schematic diagram of oil-pump safety valve of the present utility model;
Fig. 4 is the structural representation of oil pump chain wheel cover side of the present utility model;
Fig. 5 is the structural representation that oil pump mounting flange face of the present utility model is overlooked;
Fig. 6 is the structural representation that oil pump bottom surface of the present utility model is overlooked;
Mark in above-mentioned figure is: 1, the pump housing; 2, sump strainer; 3, pump cover; 4, chain wheel cover; 5, sprocket wheel; 6, rotor; 7, pressure-limit valve; 8, safety valve; 9, hexagon socket head cap screw; 10, hexagon flange bolt; 11, set pin sleeve; 12, cruciform slot screw; 13, oil suction chamber; 14, spool; 15, spring; 16, bowl-type plug; 17, oil leak hole; 18, balance pressure hole; 19, the second mounting flange; 20, the first mounting flange; 21, oil outlet; 22, oilhole is fed back; 23, bolt hole; 24, set pin sleeve; 25, oil pocket is gone out; 26, oil duct is fed back; 27, drain oil; 28, oil pocket.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect and working principle etc. of embodiment of the present utility model as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
As shown in Figures 1 to 6, engine oil pump of the present utility model, comprises the pump housing 1, rotor 6, oil pump shaft, pump cover 3, sump strainer 2, sprocket wheel 5, chain wheel cover 4, set pin sleeve 11, set pin sleeve 24, hexagon socket head cap screw 9, hexagon flange bolt 10, cruciform slot screw 12, pressure-limit valve 7 and safety valve 8.The described pump housing 1 is provided with rotor of engine oil pump chamber, oil suction chamber 13 (low-pressure cavity) and goes out oil pocket 25 (hyperbaric chamber), rotor 6 is assemblied in the rotor chamber on the pump housing 1, pump cover 3 is installed on the pump housing 1, forms closed oil pump oil suction chamber 13 and go out oil pocket 25 with the pump housing 1.
As shown in Figure 1 and Figure 4, two ends relative on the pump housing 1 are respectively equipped with first mounting flange 20, one of them first mounting flange 20 is provided with an oil outlet 21, another first mounting flange 20 is provided with a feedback oilhole 22, engine oil pump assembly is by the set pin sleeve 11 on two mounting flanges, set pin sleeve 24 and four bolt hole 23 location are fixed on engine cylinder-body, oil outlet 21 is for being connected with engine cylinder-body oil duct oil inlet hole, feedback oilhole 22 is for being communicated with the main oil gallery of engine cylinder-body, main oil gallery machine oil on cylinder body is guided to pressure-limit valve 7 top in pump cover 3 by feedback oil duct 26, and worked by engine oil pressure regulable control pressure-limit valve 7.
As shown in Figure 2, the pressure limiting valve opening holding pressure-limit valve 7 is provided with in described pump cover 3, the sidewall at pressure limiting valve opening place be provided with respectively with feedback oil duct 26, oil suction chamber 13 and three oilholes going out oil pocket 25 and is communicated with, and the sidewall at pressure limiting valve opening place is arranged with go out oilhole that oil pocket 25 is communicated with feed back that oil duct 26 is communicated with between oilhole and the oilhole be communicated with oil suction chamber 13.Pressure-limit valve 7 is made up of spool 14, spring 15 and bowl-type plug 16, bowl-type plug 16 inserts in pump cover 3 and is fixedly connected with it, spring 15 is between spool 14 and bowl-type plug 16, spool 14 adopts two-part structure, bowl-type plug 16 center is provided with circular port, play the effect of exhaust draining balance pressure, the pressure-limit valve 7 of formation is internal drainage type structure.Feedback oilhole 22 on the pump housing 1 is connected with feedback oil duct 26, be communicated to the oil pocket 28 in pump cover 3 always, worked by the spool 14 of above oil duct motor main oil gallery engine oil pressure effect pressure-limit valve 7, when the engine oil pressure (being equivalent to motor main oil gallery engine oil pressure) of oil pocket reaches the cracking pressure of pressure-limit valve 7, oil pump go out oil pocket 25 to oil suction chamber 13 draining, realize regulable control motor main oil gallery engine oil pressure.
As shown in Figure 3, the pump housing 1 goes out oil pocket 25 side and be provided with safety valve 8, the safe valve opening holding safety valve 8 is provided with in the pump housing 1, the end of safe valve opening is provided with and the oilhole going out oil pocket 25 and be communicated with, the sidewall at safe valve opening place is provided with and connects open to atmosphere oil leak hole 17 and balance pressure port 18, and the safety valve 8 of formation is the formula structure that leaks.The cracking pressure of safety valve 8 is greater than the cracking pressure of pressure-limit valve 7, safety valve 8 comprises steel ball, spring and plug screw, plug screw is fixedly connected with the pump housing 1, spring is between steel ball and plug screw, the steel ball of safety valve 8 can block in safe valve opening with the oilhole going out oil pocket 25 and be communicated with, the engine oil pressure directly passing through oil pocket 25 controls its work, and by oil leak hole 17 externally draining, balance pressure hole 18 is positioned at the lower end of oil leak hole 17.
As shown in Fig. 1,3,5, pump cover 3 is provided with second mounting flange 19, sump strainer 2 is installed by a hexagon flange bolt 10 and is fixed on the second mounting flange 19, and sump strainer 2 internal galleries communicates with the oil suction chamber 13 in the pump housing 1.
As shown in Figure 4,5, 6, the pump housing 1 is provided with the chain wheel cover 4 wrapped up by sprocket wheel 5, and chain wheel cover 4 is working of plastics, adopts four cruciform slot screws 12 to be fixed on the pump housing 1, stirs machine oil, improve machine oil air content when the function of chain wheel cover 4 is and stops sprocket wheel 5 to rotate.The pump housing 1 is provided with a drain oil 27 with the bottom at chain wheel cover 4 junction plane place, and the function of drain oil 27 is when sprocket wheel 5 is on machine oil pasta, and the machine oil in the cavity volume that chain wheel cover 4 and the pump housing 1 can be formed rapidly by drain oil 27 is discharged to outside and goes.
By reference to the accompanying drawings the utility model is exemplarily described above; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technological scheme is carried out; or design of the present utility model and technological scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (10)
1. an engine oil pump, comprise the pump housing and at the connected pump cover in pump housing side, be provided with oil suction chamber in the pump housing and go out oil pocket, it is characterized in that: described oil pump also comprises the safety valve being located at pressure-limit valve in described pump cover and being located in the described pump housing, be provided with in the pump housing and be communicated with engine cylinder-body main oil gallery and the machine oil in main oil gallery guided to the feedback oil duct of pressure-limit valve end.
2. engine oil pump according to claim 1, is characterized in that: described pump cover is connected with the described pump housing by bolt.
3. engine oil pump according to claim 1 and 2, it is characterized in that: in described pump cover, be provided with the pressure limiting valve opening holding described pressure-limit valve, the sidewall at pressure limiting valve opening place be provided with respectively with described feedback oil duct, described oil suction chamber with described go out three oilholes being communicated with of oil pocket.
4. engine oil pump according to claim 3, is characterized in that: the sidewall at described pressure limiting valve opening place is arranged with described go out the oilhole that is communicated with of oil pocket between the oilhole be communicated with described feedback oil duct and the oilhole be communicated with described oil suction chamber.
5. engine oil pump according to claim 4, is characterized in that: the spool of described pressure-limit valve is two-part structure.
6. engine oil pump according to claim 5, it is characterized in that: the two ends of the described pump housing are respectively provided with first mounting flange, one of them first mounting flange is provided with the feedback oilhole be communicated with described feedback oil duct, another first mounting flange be provided with described go out the oil outlet that is communicated with of oil pocket.
7. engine oil pump according to claim 6, it is characterized in that: in the described pump housing, be provided with the safe valve opening holding described safety valve, the end of safe valve opening be provided with described go out the oilhole that is communicated with of oil pocket, the sidewall at safe valve opening place is provided with and connects open to atmosphere oil leak hole and balance pressure port.
8. engine oil pump according to claim 7, is characterized in that: described safety valve comprises steel ball, spring and plug screw.
9. engine oil pump according to claim 8, is characterized in that: described pump cover is provided with the second mounting flange and is arranged on the sump strainer on the second mounting flange.
10. engine oil pump according to claim 9, is characterized in that: described pump housing side is provided with chain wheel cover, is provided with the sprocket wheel be arranged on oil pump shaft in chain wheel cover, and is provided with drain oil bottom chain wheel cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520175954.6U CN204664833U (en) | 2014-10-22 | 2015-03-26 | A kind of engine oil pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014206142374 | 2014-10-22 | ||
| CN201420614237 | 2014-10-22 | ||
| CN201520175954.6U CN204664833U (en) | 2014-10-22 | 2015-03-26 | A kind of engine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204664833U true CN204664833U (en) | 2015-09-23 |
Family
ID=54135213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520175954.6U Active CN204664833U (en) | 2014-10-22 | 2015-03-26 | A kind of engine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204664833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332446A (en) * | 2019-07-17 | 2019-10-15 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump that can reduce feedback oil pressure fluctuation |
-
2015
- 2015-03-26 CN CN201520175954.6U patent/CN204664833U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332446A (en) * | 2019-07-17 | 2019-10-15 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump that can reduce feedback oil pressure fluctuation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |