CN2380747Y - Double-tortion self-positioning complementary piston ring - Google Patents

Abstract

The utility model provides a double-twist self-positioning complementary piston ring. A piston ring is formed by mutually embedding a one-piece piston main ring (1) and a one-piece piston auxiliary ring (2) which are separately provided with an outer step and an inner step, shoulders of the two rings are an integral slope, and an included angle theta is formed by the integral slope and a ring end surface. The phenomena of gas leakage, oil pumping and gas carry-over can be effectively overcome by the structure, oil scraping capacity is strengthened, fuel oil and machine oil are saved, starting is easy, horse power rises, environmental pollution is reduced, and service life can be extended.

Description

The self-align complementary piston ring of two distortions

The utility model relates to a kind of machine that needs such as internal-combustion engine, air compressor adopt piston rings to seal, the piston ring on the device, especially a kind of two self-align complementary piston rings that twist of being used for.

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, is 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, to avoid combustion gas directly to spray into down the opening that encircles together and increase air leakage from the last opening that encircles together, but each road ring rotates in cylinder gradually because of the impact of vibrations and gas in the course of the work, cause eventually and occur upper and lower bipassage ring register phenomenon in use for some time, and can't stagger again after the register, at this moment scurry oil, gas blowby sharply increases, serious can not use.

The purpose of this utility model provides a kind ofly to be made up of two rings, opening staggers and can't produce with mouthful (referring to that the two rings opening overlaps), can effectively overcome gas leakage, scurry oil, gas-blowing phenomenon, strengthen the frizing ability, the self-align complementary piston ring of two distortions that increases the service life.

The utility model has monolithic piston ring (being called main ring, inner loop) phase bank outer, interior step respectively by two and is combined into piston ring one, and the shoulder surface of contact of two rings is an integral ramp, plays self-align two rings that prevent with mouthful acting on.

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 is the utility model working state figure.

Fig. 6 is the utility model assembled state schematic representation.

Fig. 7 is the sectional view of Fig. 6.

The utility model by two have outer, the monolithic piston main ring (1) of interior step respectively, inner loop (2) phase bank is combined into piston ring one, and the as a whole inclined-planes of shoulder of two rings are with the ring end face θ that has angle.Wherein a ring is outer step ring, another ring is interior step ring, and the shoulder surface of contact of two rings is the identical integral ramp of an angle, and the every shoulder height of opening is starting point accordingly with the opening, evenly rise or descend, two ring openings, the 180 ° of phase banks that stagger are combined into piston ring one during installation.

Working principle of the present utility model and advantage are as follows:

1, good air-tightness.Because the opening of major and minor ring staggers, thereby scurry combustion gas down from a last Room and can not directly enter next chamber, but the back clearance at the bottom of detour ring and the annular groove enters next chamber through the inner loop opening, has played the labyrinth sealing effect from the main ring opening.Under the situation of high engine speeds running, blast, compression stroke is very short, and exhausted most gas also is not able to do in time to flow to next chamber through the inner loop opening after having walked detour, and the air pressure of a last Room has been lower than this chamber, gas produces adverse current, thereby air leakage significantly reduces after labyrinth sealing.

2, double seal effect.For the tradition ring, when work, because gas percussion and vibration, piston ring exists radial vibration and up-down vibration, cause piston ring excircle local location and casing wall moment disengaging and piston ring unsettled, upper and lower end face and annular groove break away from and produce leakage, and the high speed internal-combustion engine is particularly serious.And the self-align complementary piston ring of two distortions is combined by major and minor ring, because the randomness of radial vibration, it is very little that major and minor ring breaks away from the probability of casing wall in same point simultaneously, even thereby wherein a slice produced to leak and also can't scurry another sheet; In addition,, reduced the suspension vibrating of piston ring effectively, cut off fairway, played good seal action owing to two anti-torsion effects.

3, self-align effect.In order to guarantee labyrinth sealing and increase the service life that must guarantee that major and minor ring opening can not overlap, we are designed to the identical integral ramp of angle (θ) with the shoulder surface of contact of major and minor ring, play self-align effect for this reason.When installation, major and minor ring opening staggers 180 ° of phase banks together, and at this moment the combined altitudes of each point is the same; In the course of the work, because gas percussion and vibration, can slowly produce relative rotation between the major and minor ring, the combined altitudes of major and minor ring become big gradually and the each point height inequality, peak has reached the annular groove height after turning over several angle, ring has blocked with annular groove, two rings can't rotate again, and whole ring week is gone up all the other each points, still less than the annular groove height, do not have stuckly, can freely open and wall keeps excellent sealing; In addition, after major and minor ring relatively rotated several angle, it is big that the combined altitudes of each point all becomes on the whole, thereby with the gap smaller of annular groove, can remedy behind piston ring or the groove wear gap between the ring and annular groove effectively, reduces and scurry oil, air leak amount.

4, frizing characteristics.The passage of opening on the machine oil has two: the one, along the slip surface of cylinder and ring; The 2nd, by the back side of ring with the circuitous ring in same crack of annular groove.For the self-align complementary piston ring of two distortions, major and minor ring twists in the same way, tilts in annular groove, and its upper and lower end face contact ring groove has stoped on the circuitous back side of encircling of machine oil to rise; And because double seal, through twice frizing, its frizing ability also is better than the tradition ring, and the self-align complementary piston ring of therefore two distortions can reduce consumption of lubricating oil to greatest extent.

Comprehensively described, the self-align complementary piston ring of two distortions air-tightness is good, characteristics such as long service life, tradition ring, a revolution on the motor history beyond doubt relatively.At first, good sealing can make the compression ratio of firing chamber improve, and makes burning more abundant, and explosive power is stronger, the fuel oil of burning as much, horsepower rises, and promptly means and has saved fuel oil, and because burning is more abundant, harmful gas reduces in a large number in the waste gas that gives off, and helps environmental protection; In addition because after the piston-cylinder wearing and tearing, horsepower is held stationary still, prolong greatly working life on the one hand, played the effect of saving fuel oil on the other hand, because the tradition ring is particularly serious in old machine along with the change high-power decline of opened gap is more and more obvious, behind the self-align complementary piston ring of the two distortions of employing, generally can save 8～10%, engine oil consumption descends 30～50%.

Generally speaking, behind the self-align complementary piston ring of the two distortions of employing, from macroscopic view following advantage is arranged: 1. horsepower rises; 2. save fuel oil machine oil; 3. grade ability is strong; 4. starting easily; 5. reduce environmental pollution; 6. prevent gas blowby lubricating oil carry-over phenomenon; 7. increase the service life.

Claims (3)

1, the self-align complementary piston ring of a kind of two distortions, comprise that upper and lower two rings are twist type ring, it is characterized in that: by two have outer, the monolithic piston ring (1) of interior step respectively, (2) phase bank is combined into piston ring one, and the shoulder surface of contact of two rings is an integral ramp.

2, piston ring as claimed in claim 1 is characterized in that wherein a ring is outer step ring, and another ring is interior step ring.

3, piston ring as claimed in claim 1, the shoulder surface of contact that it is characterized in that two rings is the identical integral ramp of an angle, the every shoulder height of opening is starting point accordingly with the opening, evenly rises or descends, and two ring openings, the 180 ° of phase banks that stagger are combined into piston ring one during installation.

Images