CN217652849U - High-speed high-pressure oil pump driving device for common rail and aviation piston engine - Google Patents
High-speed high-pressure oil pump driving device for common rail and aviation piston engine Download PDFInfo
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- CN217652849U CN217652849U CN202221304301.XU CN202221304301U CN217652849U CN 217652849 U CN217652849 U CN 217652849U CN 202221304301 U CN202221304301 U CN 202221304301U CN 217652849 U CN217652849 U CN 217652849U
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- oil pump
- pressure oil
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- common rail
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Abstract
The utility model discloses a high-speed high-pressure oil pump drive arrangement for common rail, including setting up the cam that sets up on engine crankshaft and be used for contacting with the tappet of high-pressure oil pump subassembly, set up the lightening hole on the cam. The utility model discloses a high-speed high-pressure oil pump drive arrangement for common rail can satisfy the demand of high-speed, high pressure and lightweight of engine. The utility model also discloses an aviation piston engine.
Description
Technical Field
The utility model belongs to the technical field of the engine, specifically speaking, the utility model relates to a high-speed high-pressure oil pump drive arrangement and aviation piston engine are used to common rail.
Background
In the current research on piston type two-stroke diesel aircraft engines, the two-stroke aircraft diesel engines have the outstanding advantages of higher power-weight ratio and high reliability, but at the same time, the rotating speed of the two-stroke aircraft diesel engines is greatly limited by a fuel system, particularly a high-pressure oil pump. With the continuous research, the requirements are continuously improved, the rotating speed, the power-weight ratio and the like of the two-stroke diesel engine are continuously improved, the rotating speed of the conventional two-stroke diesel aircraft engine reaches 5500Rpm, the fuel injection pressure needs to reach 10-20 MPA to achieve the atomization effect suitable for the diesel combustion compression ignition requirement, in addition, the diesel aircraft engine part has high power-weight ratio, and the high-pressure oil pump driving device cannot meet the requirements of high speed, high pressure and light weight.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a high-speed high-pressure oil pump drive arrangement for common rail, the purpose satisfies the lightweight requirement.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: the high-speed high-pressure oil pump driving device for the common rail comprises a cam which is arranged on a crankshaft of an engine and is used for being in contact with a tappet of a high-pressure oil pump assembly, and a lightening hole is formed in the cam.
The weight-reducing holes are arranged in plurality.
The lightening holes are round holes, and the axes of the lightening holes are parallel to the axis of the cam.
The molded line of the cam is an eccentric circular structure.
The engine crankshaft is provided with a mounting boss, and the cam is arranged on the mounting boss.
The utility model also provides an aviation piston engine, include common rail use high-speed high-pressure oil pump drive arrangement.
The utility model discloses a high-speed high-pressure oil pump drive arrangement is used to common rail can satisfy the high-speed, high-pressure and lightweight demand of engine.
Drawings
The description includes the following figures, the contents shown are respectively:
fig. 1 is an assembly diagram of the high-speed and high-pressure oil pump driving device for the common rail according to the present invention;
FIG. 2 is a schematic view of a plunger type high pressure oil pump;
FIG. 3 is a schematic view of a plunger tappet;
FIG. 4 is a schematic view of a cam;
FIG. 5 is a schematic illustration of a crankshaft;
labeled in the figure as: 1. a high pressure oil pump assembly; 2. a cam; 3. an engine crankshaft; 11. a tappet; 21. mounting holes; 22. lightening holes; 23. an outer surface; 31. and (5) mounting a boss.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.
As shown in fig. 1 to 5, the utility model provides a high-speed high-pressure oil pump drive device for common rail, including set up on engine crankshaft 3 and be used for the cam 2 that contacts with the tappet of high-pressure oil pump subassembly 1, set up lightening hole 22 on the cam 2.
Specifically, as shown in fig. 1 to 5, the cam 2 is fixedly disposed on the engine crankshaft 3, the tappet 11 of the high-pressure oil pump assembly 1 contacts with the outer surface 23 of the cam 2, the engine crankshaft 3 drives the cam 1 to rotate, and the cam 1 pushes the tappet 11 to move, so that the high-pressure oil pump assembly 1 operates. The high-pressure oil pump assembly 1 is a plunger type high-pressure oil pump, a support 11 is arranged below the high-pressure oil pump, and the tappet 11 is directly driven by a cam 2 arranged on an engine crankshaft 3 to drive the high-pressure oil pump assembly 1 to work.
Preferably, the lightening holes 22 are provided in plurality. The lightening holes 22 are round holes, and the axes of the lightening holes 22 are parallel to the axis of the cam 2. The lightening holes 22 are through holes which penetrate along the thickness direction of the cam 2, and all the lightening holes 22 are distributed on the cam 2 along the circumferential direction.
As shown in fig. 4, in the present embodiment, a total of four lightening holes 22 are provided.
As shown in fig. 1, 4 and 5, the cam 2 and the engine crankshaft 3 are provided independently, the engine crankshaft 3 is provided with a mounting boss 31, and the cam 2 is provided on the mounting boss 31. The center of the cam 2 is provided with a mounting hole 21, and a mounting boss 31 passes through the mounting hole 21. The cam 2 and the crankshaft 3 are interference fitted through the mounting hole 21 and the mounting boss 31. The profile of the cam 2 is of an eccentric circular configuration, i.e. the outer surface 23 of the cam 2 is of an eccentric circular configuration.
The high-speed high-pressure oil pump driving device for the common rail has the following advantages:
1. the high-pressure oil pump is driven by a cam arranged on the crankshaft, and a transmission gear and a related connecting piece between the high-pressure oil pump and the crankshaft are omitted, so that the weight of the system is reduced. The high rotating speed of the crankshaft reduces the single oil supply amount of the oil pump, and the oil pump can be further miniaturized.
2. The cam and the crankshaft are arranged in relatively independent structures, and the cam profile is arranged in an eccentric circle, so that the processing difficulty of the cam and the crankshaft is reduced.
3. And a plurality of lightening holes are formed in the cam, so that the weight of the system is further reduced.
The utility model also provides an aviation piston engine, the common rail that includes above-mentioned structure is with high-speed high-pressure oil pump drive arrangement. The specific structure of the high-speed and high-pressure oil pump driving device for the common rail can refer to fig. 1 to 5, and is not described herein again. Because the utility model discloses an aviation piston engine includes the high-speed high-pressure oil pump drive arrangement for the common rail in the above-mentioned embodiment, so it has above-mentioned high-speed high-pressure oil pump drive arrangement for the common rail's all advantages.
The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.
Claims (6)
1. High-speed high-pressure oil pump drive arrangement for rail altogether, its characterized in that: the high-pressure oil pump assembly comprises a cam which is arranged on an engine crankshaft and is used for being in contact with a tappet of the high-pressure oil pump assembly, and a lightening hole is formed in the cam.
2. The high-speed high-pressure oil pump driving device for a common rail according to claim 1, characterized in that: the weight-reducing holes are arranged in plurality.
3. The high-speed and high-pressure oil pump driving device for a common rail according to claim 1, characterized in that: the lightening holes are round holes, and the axes of the lightening holes are parallel to the axis of the cam.
4. The high-speed high-pressure oil pump driving device for the common rail according to any one of claims 1 to 3, characterized in that: the molded line of the cam is an eccentric circular structure.
5. The high-speed high-pressure oil pump driving device for the common rail according to any one of claims 1 to 3, characterized in that: the engine crankshaft is provided with a mounting boss, and the cam is arranged on the mounting boss.
6. Aviation piston engine, its characterized in that: a high-speed high-pressure oil pump driving device for a common rail including any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221304301.XU CN217652849U (en) | 2022-05-27 | 2022-05-27 | High-speed high-pressure oil pump driving device for common rail and aviation piston engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221304301.XU CN217652849U (en) | 2022-05-27 | 2022-05-27 | High-speed high-pressure oil pump driving device for common rail and aviation piston engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217652849U true CN217652849U (en) | 2022-10-25 |
Family
ID=83665664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221304301.XU Active CN217652849U (en) | 2022-05-27 | 2022-05-27 | High-speed high-pressure oil pump driving device for common rail and aviation piston engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217652849U (en) |
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2022
- 2022-05-27 CN CN202221304301.XU patent/CN217652849U/en active Active
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