Piston skirt profile line structure

A piston skirt and wire structure technology, which is applied to pistons, engine components, machines/engines, etc., can solve problems such as the inability to guarantee piston heat resistance, stable guiding and good sealing functions

Inactive Publication Date: 2013-04-03
DALIAN BINCHENG PISTON MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the shape line structure of the piston skirt cannot guarantee the heat resistance, stable guiding and good sealing function of the piston

Method used

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  • Piston skirt profile line structure

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Embodiment Construction

[0008] like figure 1 As shown, the shape line structure of the piston skirt includes a seal ring groove 1, an inner ring support surface 2, a piston pin hole 3, an outer ring support surface 4, and a convex and elliptical shape line 5. The seal ring groove 1 is set on the top skirt cylinder On the mating surface, the inner ring support surface 2 and the outer ring support surface 4 are set on the top of the piston skirt, the piston pin hole 3 is set in the middle of the piston skirt, and the convex and elliptical shape line 5 is set on the outer cylindrical surface of the piston skirt. Invented a piston skirt shape line structure, the outer circle of the piston is designed as a special-shaped outer circle (convex to elliptical), that is, the cross section perpendicular to the piston axis is an ellipse or a modified ellipse, and the ellipticity along the axis direction follows a certain law The convex ellipse of the piston shape is different from the ordinary ellipse. The pisto...

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PUM

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Abstract

The invention discloses a piston skirt profile line structure which comprises a sealing ring groove (1), an inner ring supporting surface (2), a piston pin hole (3), an outer ring supporting surface (4) and a middle-bulged varying ellipse profile line (5). The sealing ring groove (1) is arranged on a top skirt cylindrical fitting surface; the inner ring supporting surface (2) and the outer ring supporting surface (4) are arranged at the top of a piston skirt; the piston pin hole (3) is formed in the middle of the piston skirt; and the middle-bulged varying ellipse profile line (5) is arranged on the outer cylindrical surface of the piston skirt. The piston skirt profile line structure has the advantages that the excircle of a piston is designed into a special excircle (middle-bulged varying ellipse), so that a cross section perpendicular to the axis of the piston is an ellipse or a modified ellipse, the ellipticity changes in the axis direction according to certain rules, a convex ellipse of the piston shape is different from a common ellipse, the ellipse skirt adopts a structural mode of a convex reducing ellipse, the rules are that a long diameter becomes smaller, bigger and then smaller from the bottom end of the skirt part to the upper part and a short diameter becomes larger and smaller, and the gap between the piston and a cylinder is reduced.

Description

technical field [0001] The invention relates to a piston skirt profile structure. Background technique [0002] In the prior art, the shape line structure of the piston skirt cannot ensure that the piston satisfies the functions of heat resistance, stable guiding and good sealing performance. Contents of the invention [0003] The object of the present invention is to provide a piston skirt profile structure. [0004] The technical scheme adopted by the present invention to achieve the above purpose is: a piston skirt shape line structure, including a sealing ring groove (1), an inner ring support surface (2), a piston pin hole (3), an outer ring support surface ( 4) and the convex variable ellipse line (5), the sealing ring groove (1) is set on the top skirt cylindrical mating surface, the inner ring support surface (2) and the outer ring support surface (4) are set on the top of the piston skirt , the piston pin hole (3) is set in the middle of the piston skirt, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/00
Inventor 邵其浩
Owner DALIAN BINCHENG PISTON MFG
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