CN2503218Y

CN2503218Y - Positioning lining whole sealed piston ring

Info

Publication number: CN2503218Y
Application number: CN 01254639
Authority: CN
Inventors: 王伯年; 禅琪
Original assignee: Shanghai Chaowai Engine Science & Technology Co Ltd
Current assignee: Shanghai Chaowai Engine Science & Technology Co Ltd
Priority date: 2001-11-09
Filing date: 2001-11-09
Publication date: 2002-07-31
Anticipated expiration: 2011-11-09

Abstract

The utility model belongs to the field of machinery technology and relates in particular to a piston ring of a combustion engine cylinder. The piston ring consists of an upper piston ring, a lower piston ring and a positioning lining ring in combination, wherein the openings of the upper and the lower piston rings are staggered by a certain angle; two sides of the opening of the lining ring are positioned opposite to the openings of the upper and the lower piston rings and are provided with an upper flange and a lower flange, which are just inserted into the openings of the upper and the lower piston rings for fixing the piston rings. The sealing performance of the piston ring is significantly improved, thereby improving power output, lowering fuel consumption and reducing pollutant discharge.

Description

Location liner fully-sealed piston ring

Technical field

The utility model belongs to field of mechanical technique, is specifically related to a kind of location liner fully-sealed piston ring of internal-combustion engine.

Technical background

Internal-combustion engine is a dynamic power machine important in industrial or agricultural and the national defence, and piston ring is one of its main part, play a part sealing, lubricated, heat conduction and location, and seal action is primary.In order to guarantee the proper functioning of piston ring in the cylinder and piston annular groove, piston ring is packed into behind the cylinder, need leave the necessary opening gap.This just makes the combustion gas in the cylinder leak to crankcase through it, causes power of IC engine decline, oil consumption increase and exhaust emission to worsen.Therefore, how reducing or cancel the opened gap of piston ring, always is the target that internal-combustion engine and piston ring professional person pursue.China Mr.'s Yang Sizhi 9020445X patent and Mr.'s Wang Baodong ZL9522416X patent are exactly the example of this pursuit.But for various reasons, these patents are not applied so far as yet aborning.

Summary of the invention

The purpose of this utility model is to propose a kind of hermetic piston ring, thereby can improve power of IC engine, reduces oil consumption and reduces exhaust emission.

The fully-sealed piston ring that the utility model proposes is constituted by upper piston ring, lower piston ring and location inner bushing ring three parts.Upper piston ring and lower piston ring are roughly the same with the existing piston ring in shape, and the location inner bushing ring designs in order to prevent upper and lower piston ring gap position from overlapping.Wherein, the height h of upper and lower piston ring is about about half of existing height of piston ring, and their opening staggers by several angle (as 180 °), and like this to these two piston rings generally speaking, opened gap has not just existed.

Because piston ring has in grooved ring around the rotatablely moving of cylinder-bore axis, the opened gap that staggers during installation might coincide together, and can cause the existence of opened gap again, produces the disadvantage of existing piston ring.Therefore, need their relative position to be fixed with the location inner bushing ring.The location inner bushing ring can be designed to the curvilinear grommet of certain wave number, in the both sides of its opening, corresponding to the aperture position that upper and lower piston ring staggers, a flange is arranged respectively.Corresponding to the upper flange that is called of upper piston ring, corresponding to the lower protruding edge that is called of lower piston ring.These two flanges insert the opening of upper piston ring and lower piston ring respectively, thereby relatively are fixed up in the position each other of upper and lower piston ring.The opened gap of upper and lower piston ring is bigger slightly than the opened gap of existing piston ring, and its formula is: go up the gap of (or down) flange width+upper flange (or down) in last (or following) gap-clearance of piston rings on the opened gap=location inner bushing ring of (or down) piston ring.

The piston ring of the utility model design has adopted the location inner bushing ring, so be called location liner piston ring.When it rotatablely moves, can guarantee that the opening of upper and lower piston ring staggers in the annular groove of internal combustion engine, can not coincide together.The opened gap that is upper piston ring is sealed by end face on the lower piston ring of its underpart, and the opened gap of lower piston ring is sealed by the bottom surface of the upper piston ring on its top, thereby constitutes hermetic piston ring.Piston ring packing performance like this improves greatly, thereby has further improved the power of internal-combustion engine, has reduced oil consumption, has reduced exhaust emission, has the important economic implications and the value of environmental protection.

Description of drawings

Fig. 1 is inner bushing ring plane, the location diagram of this piston ring.

Fig. 2 is the location inner bushing ring cross-section illustration of this piston ring.

Fig. 3 is the cross-section illustration of this piston ring.

Number in the figure: 1 is upper piston ring, and 2 is the lower piston ring, and 3 are the location inner bushing ring, and 4 is upper flange, and 5 is lower protruding edge, and 6 is the inner bushing ring opening.

Embodiment

Further describe this piston ring below by embodiment.

Embodiment, as shown in Figure 1-Figure 3.For cylinder diameter is the diesel engine of 135mm, and the former height of its top piston ring is 3mm, and radial thickness is 5mm.The design's upper piston ring 1 is identical with the height h of lower piston ring 2, and h is 1.5mm, and radial thickness t is 3mm.The upper and lower flange 4 of location

inner bushing ring

3 and 5 height are 1.4mm.Adopt the material of common piston ring.Make up by shown in Figure 3, place the annular groove of piston, the opening of upper and lower piston ring staggers by 180 °, and is corresponding, the location inner bushing ring 3 upper and lower flange also stagger by 180 °, promptly in its opening both sides each 90 °.By on get final product required location liner fully-sealed piston ring.

Claims

1, a kind of location liner fully-sealed piston ring is constituted by upper piston ring, lower piston ring, location inner bushing ring, and the height that it is characterized in that upper and lower piston ring is for about half of existing height of piston ring, and its opening staggers by several angle; The location inner bushing ring is the curve-like that certain wave number is arranged, its opening both sides, and the aperture position corresponding to upper and lower piston ring staggers has upper flange and lower protruding edge respectively, and these two flanges insert the opening of upper and lower piston ring respectively.

2, piston ring according to claim 1 is characterized in that the opening of upper and lower piston ring staggers by 180 °, and is corresponding with it, and the upper and lower flange of location inner bushing ring also staggers by 180 °.