CN2132839Y

CN2132839Y - Opening lapping piston ring

Info

Publication number: CN2132839Y
Application number: CN 92230671
Authority: CN
Inventors: 王岐岳
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-15
Filing date: 1992-08-15
Publication date: 1993-05-12
Anticipated expiration: 2002-08-15

Abstract

The utility model relates to a piston ring used on an engine. The piston ring used on an engine is characterized in that a step overlapped structure is adopted on the opening position of a piston ring. The opening position of the piston ring not only can adopt a straight type overlapped structure, but also can adopt an inclined type overlapped structure. The piston ring used on an engine has the advantages of simple structure, reasonable structure, practicality, convenient processing, good sealing performance, etc. The piston ring used on an engine can be applied on a gasoline engine, a diesel engine, an air compressor cylinder, a steamer cylinder, an air cylinder, etc.

Description

Opening lapping piston ring

The utility model relates to the employed piston ring of a kind of motor.

At present, the employed piston rings of motor such as existing gasoline or diesel oil, its opening all are to adopt vertical hatch frame (as Fig. 1).The piston ring of this vertical hatch frame exists many shortcomings:

1, because motor piston ring meeting expanded by heating when work, so new engine when ring installation, also must leave certain clearance (generally cylinder bore diameter 0.25～0.45 between), certainly will to there be a spot of gas to rush down leakage like this, also reduces the pressure in the cylinder slightly;

2, during engine operation, piston ring moves reciprocatingly in cylinder together with piston, makes piston ring scuffing, has reduced the girth of piston ring, make gap-clearance of piston rings place gap increasing, cause gas leakage serious, thereby reduced the power of motor, increased oil consumption, shifted to an earlier date the time of engine overhaul, press the working life of motor and calculate, increased the number of times of overhaul, improved the expense of overhaul relatively;

3, owing to wear of piston-rings, increased the opened gap of piston ring, reduced the compression ratio of firing chamber, motor is difficult to start (especially under low-temperature condition) to making, thereby has shortened the working life of storage battery and Starter.

The purpose of this utility model is intended to overcome above-mentioned technical deficiency, and provides a kind of simple and reasonable for structure, practical, does not produce the opening overlap joint type piston ring of axially overlooking the gap.

The opening of piston ring that is characterised in that of the present utility model adopts the ladder bridging arrangement.

Gap-clearance of piston rings place of the present utility model can be adopted straight formula ladder bridging arrangement (as Fig. 2).

The utility model gap-clearance of piston rings place also can be adopted inclined ladder bridging arrangement (as Fig. 3).

The utlity model has simple and reasonable for structurely, practical, be convenient to processing, advantage such as closed performance is good.

Description of drawings:

Fig. 1 is the employed pot type piston ring of available engine, structural representation;

Fig. 2 is the straight formula ladder of a utility model bridging arrangement schematic representation;

Fig. 3 is the utility model inclined ladder bridging arrangement schematic representation.

Below in conjunction with accompanying drawing the utility model is further described:

Shown in accompanying drawing 2,3, the length of the ladder of the utility model gap-clearance of piston rings place overlap joint is determined according to the cylinder bore diameter size, generally between 2～15mm.Counterpart place at ladder overlap joint leaves certain interval, and guaranteeing can be not stuck in cylinder behind the piston ring expanded by heating, and its gap is about 0.30%～0.60% in the cylinder.The utility model can adopt straight formula ladder bridging arrangement (as shown in Figure 2), also can adopt inclined ladder bridging arrangement (as shown in Figure 3).According to the thickness of piston ring, inclined ladder overlap joint can be the oblique angle of 0.20mm * 45 °～2.0mm * 45 °, to increase the intensity of gap-clearance of piston rings place, prevents fracture.

The utility model opening is owing to take the ladder bridging arrangement, when in cylinder, doing reciprocating motion with piston, though wearing and tearing are arranged, but the length at opening ladder overlap joint has been replenished the girth after the piston ring scuffing, that is to say, under the elastic force expansionary force effect of piston ring itself, abut against again on the cylinder inner wall, remain at the state of sealing fully.Guarantee that part is when general overhaul is arrived in normal wear to each one of motor in addition, the utility model can not produce axially overlooks the gap.Thereby can remain the normal pressure in the cylinder, not reduce the power of motor, the corresponding fuel consumption of having saved has prolonged the time of engine overhaul reason, has reduced the general overhaul number of times, the also corresponding fund of having saved.The utility model can be used on petrol engine, diesel engine, air compressor, steam engine cylinder, air cylinder etc.

Claims

1, a kind of opening overlap joint type piston ring is characterized in that the opening of piston ring adopts the ladder bridging arrangement.

2, piston ring according to claim 1 is characterized in that gap-clearance of piston rings place is straight formula ladder bridging arrangement.

3, piston ring according to claim 1 is characterized in that gap-clearance of piston rings place is an inclined ladder bridging arrangement.