CN2392921Y

CN2392921Y - Full-closed combined piston ring

Info

Publication number: CN2392921Y
Application number: CN 99246598
Authority: CN
Inventors: 冯丙勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-08
Filing date: 1999-10-08
Publication date: 2000-08-23
Anticipated expiration: 2009-10-08

Abstract

The utility model provides a totally enclosed combined piston ring. The structure is composed of an inner ring and an outer ring. The inner ring is arranged on the inner circle of the outer ring composed of an upper ring and a lower ring. The utility model has the characteristics of reasonable design, simple structure, easy machining, convenient installation and operation, good air tightness, fuel saving, etc. Power of an engine can be enhanced.

Description

All-closed combined piston ring

The utility model relates to a kind of engine fittings, specifically a kind of all-closed combined piston ring that uses on engine piston.

Piston internal-combustion engine will be strengthened sealing between cylinder and the piston to improve the power and the working efficiency of internal-combustion engine by piston ring, its structure of the piston ring of prior art is one the metal ring of vertical openings to be arranged, in use existing deficiency is, when in piston ring embeds the piston ring groove of piston, packing in the cylinder sleeve, the vertical openings of piston ring will be closed, only allow to keep certain clearance, (purpose that keeps opened gap is to prevent to take place when new engine from working under overburdening the cylinder accident that expands,) thereby, just there is the low defective of tightness in the design of the piston ring of this kind structure itself, along with cylinder sleeve and piston ring continuous wearing and tearing in use, the diameter of cylinder sleeve will strengthen gradually, the horizontal breadth of piston ring will diminish gradually, the defective that tightness between cylinder sleeve and the piston ring is low will be more and more obvious, and consequent result is that the opening of piston ring is increasing, and tightness reduces gradually, the power of motor also reduces gradually, and fuel consumption constantly increases.The way that solves is that motor is carried out large repairs, more rering or cylinder sleeve.Thereby increased the maintenance expenses of equipment, strengthened the user cost of motor.

The purpose of this utility model provide a kind of tightness good, can improve the all-closed combined piston ring in engine power, fuel saving, prolonging overhaul cycle.

The purpose of this utility model realizes in the following manner, two flat piston rings are stacked together be placed in the piston ring groove of piston, the opening of two flat piston rings staggers mutually, be used to reduce the gas leakage at piston ring vertical openings place, in the piston ring groove of piston bottom, promptly add one on the interior circle of two piston rings and equate the interior gas leakage that reduces by two gap-clearance of piston rings horizontal clearances that encircles with two piston ring thickness.Like this, along with cylinder sleeve and piston ring continuous wearing and tearing in use, the diameter of cylinder sleeve strengthens gradually, when the horizontal breadth of flat piston ring diminishes gradually, two flat piston rings also can keep airtight conditions preferably always, therefore, the tightness between cylinder sleeve and the piston ring remains unchanged, and the power of motor can not reduce, the consumption of fuel can not increase, the overhaul life will prolong.

Accompanying drawing 1 is a cross-sectional configuration schematic representation between all-closed combined piston ring and the piston;

Accompanying drawing 2 be between all-closed combined piston ring and the piston A-A to the plan structure schematic representation.

Below with reference to Figure of description Full-closed combined piston ring of the present utility model being done at length Explanation.

Full-closed combined piston ring of the present utility model, its structure are to be made of interior ring 1, outer shroud, Interior ring 1 is arranged on the outer shroud inner circle that is combined into by pressed on ring 2 and lower ring 3.

Embodiment:

Its processing and fabricating of all-closed combined piston ring of the present utility model is very simple and convenient, and processing shown in the by specification accompanying drawing gets final product.Processing technology is identical with the processing technology of pot type piston ring.Earlier the inner carrier ring is placed in the piston ring groove during use, then with two flat go up ring and down ring stack together and put into piston ring groove and form outer shroud, other uses with the pot type piston ring are identical.

Full-closed combined piston ring of the present utility model is compared with existing technology, have reasonable in design, Simple in structure, be easy to processing, easy to install, air-tightness good, can improve engine power, Reduce the characteristics such as fuel consumption, thereby, have good value for applications.

Except the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims

1. all-closed combined piston ring comprises interior ring, outer shroud, and ring is arranged on by last ring with down in the outer shroud that is combined into of ring on the circle in it is characterized in that.