CN2229974Y

CN2229974Y - Built-up type piston ring

Info

Publication number: CN2229974Y
Application number: CN 95217884
Authority: CN
Inventors: 李尔冬
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-09
Filing date: 1995-08-09
Publication date: 1996-06-26
Anticipated expiration: 2005-08-09

Abstract

The utility model relates to a built-up type piston ring for the cylinder of an internal-combustion engine. The utility model is formed by that two common piston rings are overlapped. The utility model is arranged in a ring groove of the cylinder, the diameters and the thickness of the two piston rings of the built-up type piston ring are equal, and the width of the two piston rings of the built-up type piston ring is equal or unequal, and the openings of two rings are not mutually overlapped. The utility model has the advantages of oil saving, material saving, less wearing and long service life. The utility model can enhance the power of an engine and torque over 10%.

Description

The novel combination type piston ring

The utility model relates to the piston ring of using on the internal combustion engine piston, relates in particular to the novel combination type piston ring that a kind of internal combustion engine piston is used.

In existing internal combustion engine piston; usually piston ring 1a is formed (see figure 1) by compression ring 2a, 3a by an oil ring 4a and at least two layering settings; the existing problems of this multiple tracks ring structure are to still have gas-blowing phenomenon; interannular to deposit air space big, oil consumption is big, discharge amount of exhaust gas is many; and the structure of multiple tracks ring; correspondingly cylinder height height makes machine volume also big, therefore is sought after improving.

The piston ring that provides a kind of novel combination type piston ring to substitute original multiple tracks compression ring structure is provided the purpose of this utility model so that the gas-blowing phenomenon of piston disappears, and lubrication is good, and power, moment of torsion improve, and oil consumption is few, and volume, weight reduce.

The purpose of this utility model is achieved in that a kind of novel combination type piston ring includes two piston rings, it is characterized in that two overlapping being positioned in annular groove of cylinder of piston ring, and this two-piston ring diameter equates, thickness equates that when two rings were provided with, its opening was rubbed with the hands opened mutually in groove.

The compound piston ring of said structure because of the overlapping setting of two rings, has saved the ring bank of two interannulars, and the height of piston is reduced, thus the stroke of piston, weight and complete machine height all can be reduced accordingly, thereby the weight of piston and complete machine is reduced; This structure reduces the air space of depositing of interannular, so oil consumption and toxic emission all reduce, the improvement of environmental pollution is favourable; This structure is because of having certain machine oil in the gap between two rings in addition, and the opening of its two rings is rubbed with the hands mutually again and is opened, so the lubrication to piston ring is good, good airproof performance can make gas-blowing phenomenon disappear, the heat-transfer coefficient height, the power and the moment of torsion of motor can be improved, and the structure of associative ring is also little to wearing for piston, therefore makes the good stability of piston motion.

By drawings and Examples structure of the present utility model is further narrated below.

Description of drawings

Fig. 1 is the structural representation of piston ring commonly used

Fig. 2 is embodiment's 1 an of the present utility model structural representation

Fig. 3 is embodiment's 2 an of the present utility model structural representation

Fig. 4 is that the opening of associative ring among Fig. 3 is rubbed 180 ° schematic representation with the hands

By as seen shown in Figure 2, this kind novel combination type piston ring is that it is arranged in the annular groove of piston 1 by piston ring 2 and piston ring 3 overlapping being combined into, and original ring bank number is reduced, and the diameter of its two-

piston ring

2,3, thickness width equate that all two ring openings are rubbed with the hands mutually with 180 ° and opened.

Figure 3 shows that another embodiment of the present utility model, it is characterized in that the ring width of the ring width of lower piston ring 3 in multiple-piece piston-ring greater than upper piston ring 2, this staging pack ring, it is better that its sealing is implemented the associative ring shown in 1, better for gas-blowing phenomenon is disappeared, also the opening on the

piston ring

2,3 can be rubbed with the hands in the present embodiment and open 180 °.

In sum, multipiece ring of the present utility model is a kind of new structure Piston ring, it is low that it has oil consumption, lubricated, good airproof performance, friction loss low and Can make the little in light weight and advantage such as power is high, moment of torsion is big of oil cylinder, engine volume. Compare its fuel oil through preliminary test with the pot type piston ring and can save 10%, lubricating oil can Economize 5%, the life-span can improve more than 2 times, and engine power and moment of torsion are improved More than 10%, has good economic, practical value.

Claims

1, a kind of novel combination type piston ring includes two piston rings, it is characterized in that two overlapping being positioned in annular groove of cylinder of piston ring, and this two-piston ring diameter equates that thickness equates that when two rings were provided with, its opening was rubbed with the hands opened mutually in groove.

2,, it is characterized in that the ring width of the two-piston ring of associative ring equates, and the stranding of the opening of two-piston is opened 180 ° by the described compound piston ring of claim 1.

3,, it is characterized in that the ring width of two-piston of associative ring is unequal, and the ring width of lower piston ring is worked energetically the ring width of upper piston by the described compound piston ring of claim 1.

4,, it is characterized in that the opening stranding of the two-piston of associative ring is opened 180 ° by the described compound piston ring of claim 3.