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Piston ring structure

A piston ring and annular technology, which is applied in the field of internal combustion engines, can solve the problems of overcoming thermal deformation and achieve good self-adaptive effects

Inactive Publication Date: 2015-03-11
CHONGQING YIHU ENGINE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing piston ring structure is not very ideal in overcoming thermal deformation.

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing.

[0020] see figure 1 , figure 2 and image 3 , as can be seen from the figure, the telescopic piston ring of the engine of the present invention, the piston ring is disconnected to form two ports, and the two ports are connected to form a closed ring shape, and the two ports respectively have protrusions protruding forward for overlapping each other One of the protruding parts 1 protrudes smoothly from the inner wall of the end where it is located, and the other protruding part 1 protrudes smoothly along the outer wall of the end where it is located. The sum of the thicknesses of the two protruding parts is the wall thickness of the piston ring. A T-shaped rib is formed on the surface of one of the protrusions facing the other protrusion, and a T-shaped groove 2 for accommodating the T-shaped rib is formed on the opposite surface of the other protrusion. The height of the...

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Abstract

The invention discloses a piston ring structure. A piston ring is broken into two ports; the two ports are connected into an enclosed ring; the two ports are provided with projecting parts which project forwards for overlapping respectively; a T-shaped convex rib is formed on a face, which faces the other projecting part, of one projecting part; a T-shaped groove for accommodating the T-shaped convex rib is formed in a face opposite to the other projecting part; the T-shaped convex rib is positioned in the T-shaped groove; the profile size of the T-shaped groove is greater than the T-shaped convex rib, thereby forming an expansion joint for adjusting. At overlapping positions at the two ends of the piston ring, the T-shaped convex rib is positioned in the T-shaped groove, and the expansion joint for adjusting is formed by the T-shaped convex rib and the T-shaped groove, so that the expansion joint has high adaptability even when thermal deformation occurs. By adopting the piston ring, the influence caused by thermal deformation can be avoided from structural design.

Description

[0001] technical field [0002] The invention relates to the improvement of engine technology, in particular to an engine telescopic piston ring, which can automatically adapt to thermal expansion under engine operation, and belongs to the technical field of internal combustion engines. [0003] Background technique [0004] Piston rings are metal rings used to embed in piston grooves. 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, which is assembled into the corresponding annular groove of the section. The reciprocating and rotating piston rings rely on the pressure difference of gas or liquid to form a seal between the outer circular surface of the ring and the cylinder and one side of the ring and the ring groove. ...

Claims

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Application Information

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IPC IPC(8): F02F5/00
CPCF02F5/00
Inventor 王红星谭明军
Owner CHONGQING YIHU ENGINE MACHINERY
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