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Piston ring suitable for automobile engine

An automobile engine and piston ring technology, applied in the field of piston rings, can solve the problems of carbon deposition, wear, poor sealing performance of piston rings, etc., and achieve the effects of reducing air leakage, prolonging service life, and avoiding carbon deposition.

Inactive Publication Date: 2017-03-08
浙江正友汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the poor sealing performance of existing automobile engine piston rings, it is easy to cause crankcase oil to pump oil to the cylinder, thereby causing carbon deposits and wear in the cylinder. The invention provides a piston ring suitable for automobile engines. The technical scheme is as follows:

Method used

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  • Piston ring suitable for automobile engine
  • Piston ring suitable for automobile engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] like figure 1 and figure 2 The shown piston ring suitable for an automobile engine includes a first ring 1 in an annular structure, and a second ring 2 nested in the first ring 1;

[0017] The outer peripheral surface of the second ring 2 is provided with an inwardly recessed trapezoidal groove 4, and the inner peripheral surface of the first ring 1 is provided with an outwardly protruding trapezoidal block 5, and the trapezoidal block 5 is nested in the trapezoidal groove 4 , A spring 3 is installed between the trapezoidal block 5 and the trapezoidal groove 4, one end of the spring 3 is connected to the trapezoidal block 5, and the other end of the spring 3 is connected to the trapezoidal groove 4.

[0018] Both the trapezoidal block 5 and the trapezoidal groove 4 are arranged in an annular shape.

[0019] The angle between the two slopes of the trapezoidal block 5 is 61 degrees to 64 degrees, and the angle between the two slopes of the trapezoidal groove 4 is 56 de...

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Abstract

The invention discloses a piston ring suitable for an automobile engine, and belongs to the technical field of automobile engines. The problem that an existing automobile engine piston ring is poor in airtighness is solved. The piston ring comprises a first ring body of a cylindrical structure, and a second ring body nested in the first ring body. A trapezoidal groove concave inwards is formed in the outer circumferential surface of the second ring body. A trapezoidal block convex outwards is arranged on the inner circumferential surface of the first ring body and nested in the trapezoidal groove. A spring is installed between the trapezoidal block and the trapezoidal groove. One end of the spring is connected to the trapezoidal block, and the other end of the spring is connected to the trapezoidal groove. The piston ring suitable for the automobile engine is simple in structure, a lateral clearance and a back clearance channel between the piston ring and a piston ring groove can be cut off, carbon deposit of an air cylinder is avoided, and the effect of compensating abrasion of the piston ring is achieved.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, in particular to a piston ring suitable for automobile engines. Background technique [0002] Existing automobile engines have a side clearance channel between the piston ring and the side wall of the piston ring groove, and a backlash channel between the piston ring and the bottom of the piston ring groove. The crankcase oil is easy to pump oil to the cylinder, thereby causing the cylinder to accumulate char and wear. In the middle and late stages of engine operation, due to the wear of piston ring grooves, piston rings, cylinders, etc., the space for side clearance and back clearance increases, and the phenomenon of oil pumping becomes more serious, resulting in spark plugs being stained with oil, carbon deposits, smoke, and exhaust Contamination, engine failure and other malfunctions. Contents of the invention [0003] In order to solve the poor sealing performance of existing a...

Claims

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Application Information

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IPC IPC(8): F02F5/00
CPCF16J9/06
Inventor 汤家伟
Owner 浙江正友汽车部件有限公司
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