CN2336100Y - Binary super-thin damping piston ring - Google Patents

Abstract

The utility model relates to a binary super-thin damping piston ring. The ring is arranged in the first track (or the second track) air ring groove of a piston of a reciprocating internal combustion engine, the ring is composed of two super-thin rings which are an upper ring sum and a lower ring, the contact surface is conical surface, the two rings are both positive twisting rings, the outside dimension is equal, the upper ring inner diameter dimension is larger than the lower ring inner diameter dimension, the length that the upper ring excircle and a cylinder wall are axially contacted is smaller than the lower ring, and the two rings are arranged when the opening gaps are staggered by 180 deg. The air ring has the advantages that the tightness of the cylinder of the internal combustion engine can be effectively raised, the power of the internal combustion engine can be raised, the fuel oil and machine oil consumption can be reduced, the discharge amount of the waste gas can be reduced, and the service life of the ring can be prolonged.

Description

Binary super-thin damping piston ring

The utility model relates to the ultrathin damping piston ring of a kind of binary.

The ultrathin damping piston ring of this binary is as first road (or the second road) compression ring of reciprocating internal combustion engine.

Cylinder sleeve friction pair (piston, piston ring, cylinder liner) is the heart of internal-combustion engine, and piston ring is an of paramount importance part in the cylinder sleeve friction pair, and to the power character and the Economy of internal-combustion engine, oil consumption, all there are very big influence in discharge amount of exhaust gas and life-span.The compression ring of each the sharp different structure that generally adopts now, because its structure and the intrinsic feature of size, make its compliance to cylinder wall relatively poor, can in the certain range of speeds of internal combustion engine, produce axial suspension, when high speed piston moves back and forth, ring is bigger because of violent brinelling with the piston ring groove end face, when ring circumferentially may wear to certain value, opened gap increases, the problems referred to above can seriously reduce cylinder pressurization ratio, cause power of IC engine to descend, and fuel consumption, Oil Consumption rise, discharge amount of exhaust gas increases, the service life of also having reduced internal combustion engine.

The purpose of this utility model is fundamentally to change the structure of common compression ring, thereby provides a kind of high-performance, little pollution, long-life brand new compression ring for reciprocating internal combustion engine.

The utility model comprises following content: first (or second) compression ring in the piston ring groove is made up of the upper ring and a lower ring two rings, contact-making surface is the conical surface between pressed on ring and the lower ring, another side is the plane, the axial contact height of pressed on ring cylindrical and cylinder wall is less than the axial contact height of lower ring cylindrical and cylinder wall, pressed on ring equates with the outside dimension of lower ring, the internal diameter size of pressed on ring is greater than the internal diameter size of lower ring, upper ring and a lower ring is ultrathin ring, upper ring and a lower ring is positive twist type ring, during installation, the opened gap of pressed on ring and lower ring staggers 180 °.

Compare with common compression ring, the utlity model has following good effect:

1. improve the power of internal combustion engine, reduce fuel oil consumption and Oil Consumption;

2. reduce the pollution of toxic emission to environment;

3. prolong the working life of piston ring.

The utility model adopts the following drawings:

Fig. 1 is installed in structure diagram in one compression of the mat woven of fine bamboo strips for binary super-thin damping piston ring.The part of the label representative among the figure is: the 1-piston, and the last ring of 2-, 3-is ring down, the common compression ring in 4-second road, 5-oil ring.Fig. 2 is the A-A sectional drawing of Fig. 1, is mounted in the ultrathin damping piston ring of the binary opened gap configuration orientation diagram in one compression of the mat woven of fine bamboo strips.Fig. 3 is the B-B profile of Fig. 2, indicates the geometry of upper ring and a lower ring.

The utility model is used for internal-combustion engine, to go up ring and down ring pack in the piston top compression ring groove by Fig. 1, and by shown in Figure 3, its opened gap is staggered 180 °, the second road compression ring and oil ring adopt now uses common ring constant, the 120 ° of installations of staggering respectively of the opened gap of the second road compression ring and oil ring and arbitrary opened gap of top compression ring.Because the utility model compression ring is made up of the upper ring and lower ring two rings, makes its each other damping, has avoided internal combustion engine to produce at certain range of speeds inner carrier ring and suspended, thereby eliminated the suspension that encircles and the axial gas leakage that causes.Last ring and the ultrathin structure of encircling had down both been improved the compliance of ring to cylinder wall, improved the circumferential seal of ring, thereby reduced circumferential gas leakage, reduce because of the common relatively compression ring of every ring quality again, when the to-and-fro motion of internal combustion engine high speed, the inertial force of ring also reduces thereupon, has alleviated the violent bump and the wearing and tearing of ring and piston ring groove end face.The opened gap of pressed on ring and lower ring staggers 180 ° and installs, and opening labyrinth sealing has reduced opening gas leakage effectively, even when the wearing and tearing of ring opened gap surpass the limiting value of common ring regulation, still can effectively prevent opening gas leakage, prolongs the service life of ring.The pressed on ring internal diameter size had both improved compliance and the circumferential seal of pressed on ring to cylinder wall greater than lower ring internal diameter size, can reduce again the pressure loss of the next gases at high pressure in combustion chamber, thereby improved the back pressure of lower ring, ring circumferential seal under improving.The axial contact length of pressed on ring cylindrical and cylinder wall is conducive to improve pressed on ring to the compliance of cylinder wall less than the axial contact length of lower ring cylindrical and cylinder wall, thereby improves its circumferential seal.Sealing property improves, and just can improve the power of internal combustion engine, the reduce fuel oil consumption.Upper ring and a lower ring is positive twist type ring, has brought into play the strong characteristics of positive twist type ring frizing ability, especially can stop machine oil to flow backwards from annular groove and enter the combustion chamber, thereby reduce oil consumption.So, adopt the utility model, the sealing of cylinder is significantly improved, thereby reach increasing combustion engine power, reduce fuel consumption, oil consumption reduces toxic emission to the pollution of environment with prolong the piston ring purpose in working life.

Claims (1)

1. binary super-thin damping piston ring, it is characterized in that being formed by the upper ring and a lower ring two rings, contact-making surface is the conical surface between pressed on ring and the lower ring, another side is the plane, and the axial contact height of pressed on ring cylindrical is less than the axial contact height of lower ring cylindrical, and pressed on ring equates with the outside dimension of lower ring, the internal diameter size of pressed on ring is greater than the internal diameter size of lower ring, upper ring and a lower ring is ultrathin ring, and upper ring and a lower ring is positive twist type ring, and the opened gap of pressed on ring and lower ring staggers 180 °.

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