CN2394014Y

CN2394014Y - Full-closed piston

Info

Publication number: CN2394014Y
Application number: CN 99252854
Authority: CN
Inventors: 麻兆林
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-05
Filing date: 1999-11-05
Publication date: 2000-08-30
Anticipated expiration: 2009-11-05

Abstract

The utility model relates to a full-closed piston on an engine and an air compressor, which is used for solving the leakage problem. A pressure ring groove 1 is arranged and a piston ring 2 is embedded on a piston in the peripheral direction. The width of the pressure ring groove is widened to the width of two pressure ring grooves, and two connected piston rings 2 are embedded in the widened pressure ring groove; the end clearances 3 of the two piston rings are staggered, and no clearance is formed between the two piston rings, namely, no leakage path is formed, so that the piston rings are fully closed without the generation of the phenomena of air leakage and oil running to bring benefit for enhancing the power of the engine and saving fuel.

Description

Hermetically sealed piston

The utility model relates to the hermetically sealed piston on motor and the air compressor.

Piston is to be loaded in the cylinder and along cylinder surfaces reciprocating disc or cylindrical shape parts, generally makes with metal.In internal-combustion engine, piston work done under the promotion of gaseous-pressure.In gas compressor and water pump, piston is exerted pressure to the fluid in the cylinder under the effect of external force, and makes it to flow and improve pressure.The sealing of piston and cylinder surfaces is finished by piston ring.And piston ring also claims " packing ", is rubber-like opening metal cirque, is used for preventing that the fluid in the cylinder from sewing around piston.Many piston rings often are housed on the piston of internal-combustion engine, except that doing leakproof, wherein still have to be used for control cylinder lubricant oil specially.The former is called " pressure ring ", and the latter is called " oil ring ".

The piston in the past and the assembling of piston ring are that a piston ring is contained in the piston ring groove, between two piston rings several mm clearance are arranged.Stuck in cylinder in order to prevent piston ring expanded by heating in movement process, the opening of piston ring all leaves corresponding end gap.Therefore, piston is not hermetic, and a part of fluid must flow through through the gap at the end gap of piston ring.With regard to internal-combustion engine, the formed pressure of combustion gas does not act on the piston fully, and a part of end gap at piston ring has been lost in through the gap in vain.And a part of lubricant oil is scurried into firing chamber participation burning at the end gap of piston ring.This is to be difficult for being perceiveed by people at the initial stage that internal-combustion engine puts into operation.This is that pressure release and lubricating oil carry-over also are micro-because the end gap of new piston ring is smaller.Along with the increase of working time, the end gap of piston ring also constantly increases because of its wearing and tearing, and the situation of pressure release and lubricating oil carry-over is also just more and more obvious.The one of the main reasons of power of IC engine decline that Here it is and row's black smoke.

The purpose of this utility model is to avoid the deficiency that occurs in the above-mentioned technology, and after providing a kind of piston ring to be assemblied on the piston, is the piston of whole sealing status with cylinder.

The purpose of this utility model can reach by the following technical programs: the width of widening the pressure annular groove is the width of two pressure annular grooves, is bumped into the piston ring of two adjoint companies in the pressure annular groove after widening.

Two piston rings that are bumped in the pressure annular groove after widening, its upper piston ring end gap staggers, and promptly the end gap of two piston ring apposition positions is not corresponding, and does not form the gap between two adjoint companies of piston ring, thereby can realize its purpose.

The utility model is compared with present technology can have following effect: owing to be bumped into the piston ring of two adjoint companies in the pressure annular groove after widening, between do not form the gap again, and the end gap of two piston ring apposition position formation staggers, avoided the problem that occurs in the above-mentioned present technology, fundamentally having solved the pressure that combustion gas produced can be again from the end gap leakage of piston, and lubricant oil has also lost the condition of scurrying into the firing chamber, realizes hermetically sealed, can improve power, fuel saving.

Accompanying drawing 1 is original piston structure figure that is unkitted piston ring;

Accompanying drawing 2 is piston structure figure that the utility model is unkitted piston ring;

Accompanying drawing 3 is piston structure figure of original ring plugging;

Accompanying drawing 4 is piston structure figure of the utility model ring plugging.

To be further described the utility model below in conjunction with accompanying drawing:

Shown in 2,4, on the piston of the piston ring 2 that week upwards is shaped on pressure annular groove 1 and is bumped into, the width of widening pressure annular groove 1 is the width of two pressure annular grooves, is bumped into the piston ring 2 of two adjoint companies in the pressure annular groove 1 after widening in conjunction with the accompanying drawings.

In such scheme, two end gaps 3 of two piston rings 2 that are bumped in the pressure annular groove 1 after widening stagger, and can realize hermetically sealed.

Claims

1. hermetically sealed piston that relates on motor and the air compressor, the piston ring (2) that upwards is shaped on pressure annular groove (1) piston week and is bumped into, it is characterized in that: the width of widening pressure annular groove (1) is the width of two pressure annular grooves, is bumped into the piston ring (2) of two adjoint companies in the pressure annular groove (1) after widening.

2. hermetically sealed piston according to claim 1 is characterized in that: two piston rings (2) that are bumped in the pressure annular groove (1) after widening, its upper piston ring end gap (3) staggers.