CN219529174U - In-line common rail oil feed pump for high rail pressure and high rotation speed common rail system - Google Patents
In-line common rail oil feed pump for high rail pressure and high rotation speed common rail system Download PDFInfo
- Publication number
- CN219529174U CN219529174U CN202320681568.9U CN202320681568U CN219529174U CN 219529174 U CN219529174 U CN 219529174U CN 202320681568 U CN202320681568 U CN 202320681568U CN 219529174 U CN219529174 U CN 219529174U
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- Prior art keywords
- pump
- plunger
- common rail
- oil
- spring
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- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000005086 pumping Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 33
- 239000000446 fuel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses an in-line common rail oil supply pump for a high rail pressure and high rotation speed common rail system, which comprises a pump body, an oil pumping mechanism arranged on the pump body and a cam shaft arranged in the pump body, wherein the lower end of the oil pumping mechanism is in transmission connection with the cam shaft, and the improvement is that: the two sets of oil pumping mechanisms are axially arranged on the pump body along the cam shaft. The beneficial technical effects of the utility model are as follows: the in-line common rail oil supply pump for the high rail pressure and high rotation speed common rail system can effectively improve oil supply capacity on the premise of not occupying a large space, and indirectly enhances the output capacity of an engine.
Description
Technical Field
The present utility model relates to an oil feed pump, and more particularly, to an in-line common rail oil feed pump for a high rail pressure and high rotational speed common rail system.
Background
Along with the development of technology, the engineering world has higher and higher requirements on engine power, and one feasible improvement mode is to further improve the injection pressure during fuel injection, so as to further enhance the fuel supply capacity and efficiency, but more devices are required to be carried on the vehicle at present, so that the space on the vehicle is very limited, and when improvement is carried out, the premise is that the space is not occupied too much, so that a fuel supply pump with small space occupation and strong fuel supply capacity needs to be designed.
Disclosure of Invention
Aiming at the problems in the background technology, the utility model provides an in-line common rail oil supply pump for a high rail pressure and high rotation speed common rail system, which comprises a pump body, an oil pumping mechanism arranged on the pump body and a cam shaft arranged in the pump body, wherein the lower end of the oil pumping mechanism is in transmission connection with the cam shaft, and the improvement is that: the two sets of oil pumping mechanisms are axially arranged on the pump body along the cam shaft.
As shown in FIG. 1, compared with the original single oil pumping mechanism, the two sets of oil pumping mechanisms are arranged in an in-line mode, so that the oil supply capacity of the oil supply pump can be effectively improved on the premise of not occupying more space.
Aiming at the oil pumping mechanism, the utility model adopts the following preferable scheme: the oil pumping mechanism consists of an oil pumping system, a return spring and a roller body assembly; the roller body assembly consists of a clamp spring, a roller and a roller body;
the upper part of the pump oil system forms a pump oil section, the lower part of the pump oil system forms a plunger section, a step surface is formed at the junction of the plunger section and the pump oil section, a plunger cavity communicated with the lower end surface of the pump oil system is arranged in the plunger section, a plunger is arranged in the plunger cavity, and a spring groove is formed in the outer wall of the upper part of the plunger section; the lower end of the plunger is provided with a connector which is positioned at the lower side of the plunger section;
the upper end face of the roller body is provided with a groove, the clamp spring is arranged in the groove, a limiting cavity is formed by the clamp spring and the space surrounded by the bottom face of the groove, and the clamp spring clamps the connector in the limiting cavity; the reset spring is sleeved on the plunger section, the upper end of the reset spring is in contact with the spring groove, the lower end of the reset spring is in contact with the circumferential edge of the clamp spring, and the reset spring abuts against the bottom surface of the groove;
the mounting groove matched with the roller is formed in the lower end face of the roller body, the upper portion of the roller is arranged in the mounting groove, and the lower end of the roller is in contact with the cam shaft.
The advantage of this preferred solution is: 1) The jump ring simple structure, weight are lighter, can reduce the device dead weight and reduce assembly complexity, and 2) the gyro wheel is in half open state, and the gyro wheel lower part can fully contact with the lubricating oil in the camshaft intracavity, need not set up lubricating structure for the gyro wheel on the gyro wheel body, can effectively reduce the processing degree of difficulty of gyro wheel body.
The beneficial technical effects of the utility model are as follows: the in-line common rail oil supply pump for the high rail pressure and high rotation speed common rail system can effectively improve oil supply capacity on the premise of not occupying a large space, and indirectly enhances the output capacity of an engine.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3, schematic cross-sectional view of the structure at position A-A in FIG. 2;
the names corresponding to the marks in the figure are respectively: pump body 1, pump oil system 2, camshaft 3, reset spring 4, jump ring 5, gyro wheel 6, gyro wheel body 7.
Detailed Description
An in-line common rail oil feed pump for high rail pressure high rotational speed common rail system, includes pump body 1, sets up the pump oil mechanism on pump body 1 and sets up at the inside camshaft 3 of pump body 1, pump oil mechanism lower extreme with camshaft 3 transmission is connected, its improvement lies in: the two sets of oil pumping mechanisms are axially arranged on the pump body 1 along the cam shaft 3.
Further, the oil pumping mechanism consists of an oil pumping system 2, a return spring 4 and a roller body assembly; the roller body assembly consists of a clamp spring 5, a roller 6 and a roller body 7;
the upper part of the pump oil system 2 is provided with a pump oil section, the lower part of the pump oil system 2 is provided with a plunger section, the junction of the plunger section and the pump oil section is provided with a step surface, a plunger cavity communicated with the lower end surface of the pump oil system 2 is arranged in the plunger section, a plunger is arranged in the plunger cavity, and the outer wall of the upper part of the plunger section is provided with a spring groove; the lower end of the plunger is provided with a connector which is positioned at the lower side of the plunger section;
the upper end face of the roller body 7 is provided with a groove, the clamp spring 5 is arranged in the groove, a limiting cavity is formed by the clamp spring 5 and the space surrounded by the bottom face of the groove, and the connector is clamped in the limiting cavity by the clamp spring 5; the reset spring 4 is sleeved on the plunger section, the upper end of the reset spring 4 is in contact with the spring groove, the lower end of the reset spring 4 is in contact with the circumferential edge of the clamp spring 5, and the reset spring 4 abuts against the clamp spring 5 on the bottom surface of the groove;
the lower end face of the roller body 7 is provided with a mounting groove matched with the roller 6, the upper part of the roller 6 is arranged in the mounting groove, and the lower end of the roller 6 is in contact with the cam shaft 3.
Claims (1)
1. An in-line common rail oil feed pump for high rail pressure high rotational speed common rail system, includes pump body (1), sets up pump oil mechanism and setting up inside camshaft (3) at pump body (1) on pump body (1), pump oil mechanism lower extreme with camshaft (3) transmission connection, its characterized in that: the two sets of oil pumping mechanisms are axially arranged on the pump body (1) along the cam shaft (3);
the oil pumping mechanism consists of an oil pumping system (2), a return spring (4) and a roller body assembly; the roller body assembly consists of a clamp spring (5), a roller (6) and a roller body (7);
the upper part of the pump oil system (2) forms a pump oil section, the lower part of the pump oil system (2) forms a plunger section, the junction of the plunger section and the pump oil section forms a step surface, a plunger cavity communicated with the lower end surface of the pump oil system (2) is arranged in the plunger section, a plunger is arranged in the plunger cavity, and a spring groove is arranged on the outer wall of the upper part of the plunger section; the lower end of the plunger is provided with a connector which is positioned at the lower side of the plunger section;
the upper end face of the roller body (7) is provided with a groove, the clamp spring (5) is arranged in the groove, a limiting cavity is formed by the clamp spring (5) and the space surrounded by the bottom face of the groove, and the clamp spring (5) clamps the connector in the limiting cavity; the reset spring (4) is sleeved on the plunger section, the upper end of the reset spring (4) is in contact with the spring groove, the lower end of the reset spring (4) is in contact with the circumferential edge of the clamp spring (5), and the reset spring (4) abuts against the clamp spring (5) on the bottom surface of the groove;
the lower end face of the roller body (7) is provided with a mounting groove matched with the roller (6), the upper part of the roller (6) is arranged in the mounting groove, and the lower end of the roller (6) is contacted with the cam shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320681568.9U CN219529174U (en) | 2023-03-31 | 2023-03-31 | In-line common rail oil feed pump for high rail pressure and high rotation speed common rail system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320681568.9U CN219529174U (en) | 2023-03-31 | 2023-03-31 | In-line common rail oil feed pump for high rail pressure and high rotation speed common rail system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219529174U true CN219529174U (en) | 2023-08-15 |
Family
ID=87626839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320681568.9U Active CN219529174U (en) | 2023-03-31 | 2023-03-31 | In-line common rail oil feed pump for high rail pressure and high rotation speed common rail system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219529174U (en) |
-
2023
- 2023-03-31 CN CN202320681568.9U patent/CN219529174U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 401120 No. 6 Cuining Road, Liangjiang New District, Yubei District, Chongqing Patentee after: Heavy Oil High Tech Electronic Fuel Injection System Co.,Ltd. Address before: 401120 No. 6 Cuining Road, Liangjiang New District, Yubei District, Chongqing Patentee before: Heavy oil high tech electronic fuel injection system (Chongqing) Co.,Ltd. |
|
| CP03 | Change of name, title or address |