CN2412098Y

CN2412098Y - Two-side oil scraping anti-rotation complementary piston ring

Info

Publication number: CN2412098Y
Application number: CN 00229468
Authority: CN
Inventors: 梁桓炎; 邹广南
Original assignee: ZHONGHUAN MACHINERY CO Ltd GUANGXI
Current assignee: ZHONGHUAN MACHINERY CO Ltd GUANGXI
Priority date: 2000-03-18
Filing date: 2000-03-18
Publication date: 2000-12-27
Anticipated expiration: 2010-03-18

Abstract

The utility model provides a two-side oil scraping anti-rotation complementary piston ring. A piston ring is composed of a main ring with an outer shoulder and an auxiliary ring, an oil gathering slot is formed by an outer circle of the piston ring, and the shoulder of the main ring and an inner circle of the auxiliary ring are both eccentric circles. The main and the auxiliary rings can be prevented from rotating correspondingly by the piston ring adopting the structure. The utility model has excellent sealing effect, compression ratio of a cylinder can be effectively enhanced, horsepower is larger under the equal condition, and service life is longer. Owing to the existing of the oil gathering slot, double oil scraping and oil drain functions similar to an oil ring are played, the functions of a gas ring and the oil ring are gathered into integration, and performance is better than a traditional ring.

Description

Bilateral oil scraping anti-rotation complementary piston ring

The utility model relates to the piston ring of sealing usefulness such as a kind of internal-combustion engine, air compressor, especially a kind of bilateral oil scraping anti-rotation complementary piston ring.

The conventional piston ring is when work, gas at first flows in the gap of casing wall and piston space from the firing chamber, enter the back clearance of ring through the sideshake of ring, the gas that accumulates in whole ring back enters the cylinder wall and the piston clearance of below by the opened gap of ring, thereby encircles the central core of circulation that opened gap becomes leakage.In addition, when work, because the up-down vibration of piston ring, oil gas also can leak through the path of gap formation everywhere.For general internal-combustion engine, air pressure is original 25% behind ring together, falls into 10% behind two road rings, 5% (referring to railway publishing house " piston ring ") behind three road rings.Along with cylinder sleeve, wear of piston-rings, the ring opened gap becomes greatly gradually in addition, and air leakage increases, and horsepower descends, until not using.In addition, each road ring opening when mounted staggers, spray into down the opening that encircles together and increase air leakage from the last opening that encircles together to avoid direct, and, each road ring rotates in cylinder gradually because of the impact of vibrations and gas in the course of the work, causes eventually to occur upper and lower bipassage ring register phenomenon in use for some time, can't stagger again after the register again, at this moment scurry oil, gas blowby sharply increases, serious can not use.

The purpose of this utility model provides a kind of good sealing effect, can prevent that major and minor ring from relatively rotating, and plays the bilateral oil scraping anti-rotation complementary piston ring of dual frizing and oil draining function.

The utility model is achieved in that the main ring that a slice has an outer shoulder forms piston ring with a slice inner loop, and piston ring excircle forms oil trap, and circle being eccentric circle in main ring shoulder and the inner loop.

Take the piston ring of above structure can prevent that major and minor ring from relatively rotating, and have good sealing effect because of labyrinth sealed exists, can effectively improve the compression ratio of cylinder, make burning more abundant, following horsepower of equal conditions is bigger, and the life-span is longer; And because the dual frizing and the oil draining function that are similar to oil ring are played in the existence of oil trap, the function of collector ring and oil ring is better than the tradition ring in one on performance.

Elaborate below in conjunction with accompanying drawing.

Fig. 1 is the utility model main ring structural representation.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is the utility model inner loop structural representation.

Fig. 4 is the sectional view of Fig. 3.

Fig. 5 closes schematic representation for the major and minor loops of the utility model.

Fig. 6 has the primary and secondary ring of oval oil trap in conjunction with schematic representation.

The utility model is combined into piston ring one by a slice main ring (1) and a slice inner loop (2), and main ring (1) has outer shoulder, in order to ensure the labyrinth sealed effect, the opening of major and minor ring is not overlaped; Otherwise will equally with the tradition ring can't play the labyrinth sealing effect after overlapping.For this reason, the utility model all is designed to eccentric circle with circle in main ring shoulder and the inner loop, and has complementarity, when two ring openings stagger 180 ° the time, the each point of circle has certain interval in main ring shoulder and the inner loop, (less than 180 °) gap is zero can't the rotation after turning an angle, and therefore major and minor ring opening can't overlap forever, has guaranteed the labyrinth sealing effect of complementary ring.

Main ring and inner loop opening stagger 180 ° during installation, make the combustion gas under scurrying from a last Room directly not enter next chamber from the opening of main ring, but enter next chamber through the inner loop opening around the back clearance and the oil trap of ring and annular groove, played the labyrinth sealed effect, can effectively improve the compression ratio of cylinder, make burning more abundant, horsepower rises, and saves fuel oil.

Primary and secondary ring is gone up circle middle part formation oil trap (3) after being combined as one piston ring, and oil trap can have various forms and structure.Down, primary and secondary ring plays knife-type oil stripping action simultaneously in working order, and the oil that inner loop scrapes can directly enter next chamber.If there is not the existence of oil trap, the machine oil that main ring scrapes can't be drained, aggregation can cause that between major and minor ring local engine oil pressure raises, the machine oil meeting anti-channeling that main ring scrapes is to a last Room, main ring does not have knife-type oil stripping action, the effect of oil trap is the same with the effect of the oil trap of common oil ring, therefore the utlity model has very strong frizing ability.According to this principle, oil trap (3) can have various structures and combination, all can play good oil-saving effect, especially as shown in Figure 6 complementation ring with eccentric oil trap, the oil that main ring scrapes can only be toward a direction oil return, can't up scurry a Room from the main ring opening, can only enter next chamber, obtain good effect aspect tightness and the frizing ability through the inner loop opening.

Claims

1, a kind of bilateral oil scraping anti-rotation complementary piston ring is made up of a slice main ring and a slice inner loop, and it is characterized in that: main ring (1) has outer shoulder, and circle is eccentric circle in main ring shoulder and the inner loop (2), and the piston ring excircle that primary and secondary ring is formed forms oil trap (3).