Completely closed piston and piston ring assembly

A piston ring, fully enclosed technology, applied in the direction of piston rings, pistons, engine components, etc., can solve problems such as complex structures, and achieve the effects of saving lubricating oil, good sealing effect, and fuel saving

Inactive Publication Date: 2002-10-16
王彦海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these existing technologies have complex structures, and some do not cut off the passage of the backlash and backlash between the piston ring and the piston ring groove, so they have not been widely promoted and applied.

Method used

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  • Completely closed piston and piston ring assembly
  • Completely closed piston and piston ring assembly
  • Completely closed piston and piston ring assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Such as figure 1 , figure 2 , image 3 As shown, the first embodiment of the present invention is that a piston 2, two gas rings 3 and 3' with staggered openings, an elastic ring 4 and a spring 7 are installed in the cylinder 1. Two gas rings 3 and 3' with staggered openings are arranged in the gas ring groove of piston 2, and elastic rings 4 are installed on the radially inner end faces of the two gas rings 3 and 3', and the width of the elastic ring is twice as large as that of the gas ring. corresponding to the width. The gas ring groove bottom surface of the above-mentioned piston has an annular groove 5 along one side wall of the gas ring groove, and the side wall 51 of the non-gas ring groove side wall of the annular groove 5 is parallel to the gas ring groove side wall. The elastic ring 4 is a closed ring body without an opening, and the radially inner end surface of the elastic ring 4 has a radially protruding axial end that enters the above-mentioned annula...

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PUM

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Abstract

The present invention is one completely closed piston and piston ring assembly. The gas ring groove of the piston has ring notch with side wall parallel to the side wall of the gas ring groove; the elastic ring is a closed one with elastic blades to seal the ring notch; springs to make the piston ring contact closely to the inner wall of the cylinder are set in some area between the elastic ring and the gas ring groove; and the elastic ring has outer side matching with the inner side of two branch gas ring. The present invention can cut off the passage of backlashs between the piston ring andthe piston ring grooves, improve the sealing performance of the cylinder and raise the service life of the engine.

Description

technical field [0001] The invention relates to a fully enclosed piston and piston ring assembly, in particular to the matching structure of the piston and the piston ring. Background technique [0002] In the matching structure of the piston and the piston ring, there is a passage between the two sides of the piston ring and the piston ring groove and the backlash between the inner circle of the piston ring and the bottom of the piston ring groove. In this way, there will be crankcase oil to the cylinder. The appearance of the oil pumping phenomenon will cause carbon deposits in the cylinder and cause cylinder wear. Especially 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, and smoke. Exhaust poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/04F02F5/00
Inventor 王彦海
Owner 王彦海
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