Small-gap and low-friction piston component

A piston assembly, low-friction technology, applied to pistons, pump components, engine components, etc., can solve problems such as reduced mechanical efficiency, air tightness leakage, etc., to reduce exhaust emissions, increase compression pressure, and improve combustion efficiency.

Inactive Publication Date: 2013-10-02
周继斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gap will cause airtight leakage and lateral vibration, reducing mechanical efficiency; moreover, if the gap is designed or worn too large, it will directly affect the quality of the assembly and determine whether the assembly needs to be repaired or even scrapped , therefore, the fit clearance between the piston and the cylinder liner plays a leading role

Method used

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  • Small-gap and low-friction piston component

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] refer to Figure 1 to Figure 3 As shown, a small clearance, low friction piston assembly disclosed by the present invention includes a piston 1 , a piston ring 2 , a piston pin 3 and a cylinder liner 4 .

[0030] Among them, the piston ring 2 includes an air ring 21 and an oil ring 22. In this embodiment, two air rings 21 and one oil ring 22 are provided. Correspondingly, three ring grooves (11, 12, 13) are formed on the piston 1, located at The upper two annular grooves (11, 12) are equipped with gas rings 21 for heat transfer and sealing, while the lowermost annular groove 13 is installed with oil rings 22 for oil distribution and oil scraping.

[0031] Piston 1 is made up of head 14 and skirt 15, and the cross section of piston 1 head 14 is ellipse, as image 3 As shown, the difference between the diameter of the major axis and the ...

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Abstract

The invention discloses a small-gap and low- friction piston component which comprises a piston, a cylinder sleeve, a piston ring and a piston pin, wherein the piston comprises a head part and a skirt part; the cross section of the head part of the piston is elliptical. The piston provided by the invention is better in airtightness, the combustion efficiency is improved, further the compression pressure is increased, fuel oil is saved, and tail gas emission is reduced accordingly.

Description

technical field [0001] The invention relates to a small gap and low friction piston assembly, which is applied to plunger machines such as engines and compressors. Background technique [0002] Piston components generally include pistons, cylinder liners, piston rings and piston pins. Piston rings generally include air rings and oil rings. Correspondingly, ring grooves are formed on the piston. Usually, the first and second ring grooves on the piston are installed with air rings. , which plays the role of heat transfer and sealing, and the bottom ring groove is equipped with an oil ring, which plays the role of oil distribution and oil scraping. The piston assembly reciprocates in the cylinder liner, sucks gas through the intake valve, and generates a high temperature with a compression ratio of about 10 times. At this time, fuel is injected to form an explosion and generate power. The piston assembly is the main core moving part of plunger-type machinery such as engines an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/00F02F3/28F04B39/00
Inventor 周继斌
Owner 周继斌
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