CN218581708U - Aluminium piston of gasoline engine - Google Patents
Aluminium piston of gasoline engine Download PDFInfo
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- CN218581708U CN218581708U CN202222836452.6U CN202222836452U CN218581708U CN 218581708 U CN218581708 U CN 218581708U CN 202222836452 U CN202222836452 U CN 202222836452U CN 218581708 U CN218581708 U CN 218581708U
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- pin hole
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- piston
- gasoline engine
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Abstract
The utility model discloses a gasoline engine aluminum piston, which belongs to the technical field of internal combustion engine aluminum piston structures and comprises a head part, a skirt part, a pin seat and a pin hole, wherein the inner side and the outer side of the pin hole are arranged in a horn hole shape, the pin hole is a unilateral longitudinal high ovality hole, the unilateral longitudinal ovality of the pin hole is 0.009mm, and an annular lubricating groove is arranged in the middle position of the pin hole; and an oil hole penetrating through the lubricating groove is formed below the pin boss. Compared with the prior art, the bearing capacity of the piston is further improved, and the noise generated during the operation of the piston is reduced.
Description
Technical Field
The utility model relates to an internal-combustion engine aluminum piston technical field especially belongs to a gasoline engine aluminum piston.
Background
Traditional gasoline engine aluminum piston, in order to reduce the contact stress between piston pin hole and the piston pin, reinforcing piston bearing capacity, all adopt all kinds of abnormal shape structures, such as oval-shaped, horn mouth shape etc. basically in the piston pin hole. However, these pin hole structures have caused other problems such as increased engine noise, increased stress at the throat of the combustion chamber, and increased stress at the ring groove portion.
Disclosure of Invention
An object of the utility model is to overcome the weak point of above-mentioned conventional art, provide a gasoline engine aluminium piston that has good bearing capacity, lower noise.
The utility model provides an aluminum piston of a gasoline engine, which comprises a head part, a skirt part, a pin boss and a pin hole, wherein the inner side and the outer side of the pin hole are arranged in a horn hole shape, the pin hole is a unilateral longitudinal high-ovality hole, and the middle position of the pin hole is provided with an annular lubricating groove; and an oil hole penetrating through the lubricating groove is formed below the pin boss.
Further, the unilateral longitudinal ellipse quantity of the pin hole is 0.009mm.
The utility model provides a gasoline engine aluminum piston adopts the pinhole of unilateral vertical high ovality structure to set up to the bell mouth shape in the inside and outside of pinhole, reach the purpose that reduces piston head stress, simultaneously, be designed with annular lubrication groove in the intermediate position of pinhole, improve the lubricated state of pinhole, thereby reach the purpose that reduces the striking noise between pinhole and the piston pin.
Drawings
The accompanying drawings partially disclose embodiments of the present invention, in which,
fig. 1 is a front sectional view of the present invention;
FIG. 2 is an enlarged view of a portion A of the present invention from FIG. 1;
fig. 3 is a left side sectional view of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a head portion; 2. a skirt portion; 3. a pin boss; 4. a pin hole; 5. a lubrication groove; 6. an oil hole; alpha, the unilateral longitudinal elliptical mass of the pin hole.
Detailed Description
The utility model provides a gasoline engine aluminum piston, which comprises a head part 1, a skirt part 2, a pin seat 3 and a pin hole 4, wherein as shown in figure 2, the inner side and the outer side of the pin hole 4 are arranged in a horn hole shape; as shown in fig. 3, the pin hole 4 is a single-side longitudinal high-ellipticity hole, and the single-side longitudinal ellipticity amount alpha of the pin hole 4 is 0.009mm; the shapes of the bell-mouthed holes and the elliptical holes inside and outside the pin hole 4 are used for reducing the stress of the piston head 1; as shown in fig. 1, an annular lubricating groove 5 is formed in the middle of the pin hole 4; an oil hole 6 penetrating through the lubricating groove 5 is formed below the pin boss 3; the lubricating oil in the lubricating groove 5 is supplied through the oil hole 6, and the lubricating state of the pin hole 4 is improved, so that the impact noise between the pin hole 4 and the piston pin during the operation of the piston is reduced.
To sum up, the utility model discloses for current scheme, further improved the bearing capacity of piston, reduced the noise of its during operation.
Claims (2)
1. An aluminum piston of a gasoline engine comprises a head (1), a skirt part (2), a pin boss (3) and a pin hole (4), wherein the inner side and the outer side of the pin hole (4) are in a horn hole shape, and the aluminum piston is characterized in that the pin hole (4) is a single-side longitudinal high-ovality hole, and an annular lubricating groove (5) is formed in the middle of the pin hole (4); an oil hole (6) penetrating through the lubricating groove (5) is formed below the pin seat (3).
2. The aluminum piston for the gasoline engine as defined in claim 1, wherein the single-sided longitudinal ellipse amount of the pin hole (4) is 0.009mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222836452.6U CN218581708U (en) | 2022-10-27 | 2022-10-27 | Aluminium piston of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222836452.6U CN218581708U (en) | 2022-10-27 | 2022-10-27 | Aluminium piston of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218581708U true CN218581708U (en) | 2023-03-07 |
Family
ID=85375076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222836452.6U Active CN218581708U (en) | 2022-10-27 | 2022-10-27 | Aluminium piston of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218581708U (en) |
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2022
- 2022-10-27 CN CN202222836452.6U patent/CN218581708U/en active Active
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| GR01 | Patent grant |