Piston and piston ring combined structure for increasing engine oil return
A combined structure and piston ring technology, applied in the direction of piston rings, pistons, mechanical equipment, etc., can solve problems such as oil sucking back
Pending Publication Date: 2021-05-14
GUANGXI YUCHAI MASCH CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0004] The embodiment of the present application provides a combined structure of a piston and a piston ring that increases the oil return to solve the oil sucking phenomenon caused by the gas engine due to long-term idling operation
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] In addition, the examples shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to be essential to the solution of the invention described in the claims.
[0029] The embodiment of the present application provides a combined structure of a piston and a piston ring that increases the oil return of the engine, which is...
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Abstract
The invention discloses a piston and piston ring combined structure for increasing engine oil return. The piston and piston ring combined structure is used for solving the engine oil suck-back phenomenon caused by long-time idling operation of a gas engine. The piston and piston ring combined structure comprises a piston body, a piston ring assembly and a cylinder sleeve; the piston ring assembly comprises a first ring, a second ring and a third ring, the first ring is used for keeping sealing between the piston body and the cylinder sleeve, and the second ring and the third ring are used for scraping off engine oil attached to the cylinder sleeve; the piston body is arranged in the cylinder sleeve, and the first ring, the second ring and the third ring are sequentially embedded into a piston ring groove of the piston body from top to bottom; the second ring is of a nose-shaped ring structure; and an axial oil return hole is formed in the outer end of a piston ring bank at the bottom of an oil scraping ring groove of the piston body and used for increasing the axial oil return area.
Description
technical field [0001] The embodiments of the present application relate to the technical field of engines, and in particular to a combined structure of a piston and a piston ring that increases the return of engine oil. Background technique [0002] The piston ring is the core component inside the fuel engine. It completes the sealing of fuel gas together with the cylinder, piston, and cylinder wall. According to the functional classification, piston rings are divided into two types: compression rings and oil rings. The compression ring is used to seal the combustible mixture in the combustion chamber; the oil ring is used to scrape excess oil from the cylinder. The piston ring is a metal elastic ring with a large outward expansion deformation. It is embedded in the piston groove. The reciprocating and rotating piston ring relies on the pressure difference of gas or liquid to move between the outer surface of the ring and the cylinder and the ring. Forms a seal with one g...
Claims
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Login to View More IPC IPC(8): F02F3/00F02F5/00F16J9/20F16J9/26
CPCF02F3/00F16J9/20F16J9/26
Inventor 韦良锦苏怀林张锦韦莹包毅蒙清
Owner GUANGXI YUCHAI MASCH CO LTD