CN2380703Y

CN2380703Y - Efficient combined piston-ring

Info

Publication number: CN2380703Y
Application number: CN 99228551
Authority: CN
Inventors: 朱志鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-08
Filing date: 1999-06-08
Publication date: 2000-05-31
Anticipated expiration: 2009-06-08
Also published as: RU2244145C2

Abstract

The utility model relates to an efficient combined piston ring which is a combined gas ring, comprising an upper ring and a lower ring. The directions of the working openings of the upper ring and the lower ring are staggered for 180 DEG, and the working openings are symmetrically arranged in a ring groove. The external outline of a cross section after the upper ring is combined with the lower ring is a rectangle, the connecting surface of the ring peripheries of the upper ring and the lower ring is provided with an empty wedge shape of an angle of 30 SEC-1 DEG 30 SEC, and the connecting surface of the ring inner cycles of the upper ring and the lower ring is provided with an empty wedge of an angle of two to seven DEG. The insufficiency of the existing piston ring when the existing piston ring works is overcome by the utility model which is a piston ring which is provided with a smaller side clearance matched. Work efficiency of an engine is enhanced, service life is one time longer in general, air sealing performance is good, and cylinder scoring can be prevented.

Description

The efficient combined-type piston ring

The utility model relates to explosive motor piston ring compression ring, especially relates to a kind of efficient combined-type piston ring compression ring.

Usually ring and annular groove cooperate side clearance hour, the stuck pull-cylinder phenomena generation that causes in annular groove of piston ring easily takes place, make the envelope gas performance failure of piston ring.When side clearance is big, has shortened the working life of ring again and increased air leakage.

The purpose of this utility model is: overcoming in the prior art side clearance of piston ring and annular groove can not work under state less than normal, a kind of smaller side Spielpassung that has is provided, guarantees engine operation efficient and long service life again, seal the piston ring Combined gaseous ring that gas is good, can prevent scuffing of cylinder bore.

The purpose of this utility model is achieved in that efficient combined piston-ring, piston ring is Combined gaseous ring, comprise that upper ring and a lower ring consists of, the work openings direction of pressed on ring and lower ring staggers 180 ° of angle balanced configurations in an annular groove, the upper plane that it is characterized in that pressed on ring is parallel with the lower plane of lower ring, cross section outline after the upper ring and a lower ring combination is a rectangle, and the ring periphery interface of pressed on ring and lower ring is provided with the empty wedge shape at 30 " 1 ° 30 " angle.

Further improvement of the utility model is: all interfaces are provided with 2 °-7 ° 30 " the empty wedge shapes at angle in the ring of pressed on ring and lower ring.Two different little triangular open space are so just arranged, and last ring and the cross section of encircling down are respectively polygonal and trapezoidal.

Characteristics of the present utility model are: the deficiency when this piston ring has overcome the work of existing piston ring is a kind of piston ring with smaller side Spielpassung, and engine operation efficient improves, the saving of fuel is apparent in view, and generally long one times of working life, envelope gas are good.This be because ring and annular groove between under the littler side clearance mated condition ring decrease lowly, increased service life of ring; Envelope gas performance improves, and makes the corresponding raising of explosive motor dynamic property.Thereby oil-saving effect is obvious, and toxic emission reduces.

Below in conjunction with accompanying drawing and by embodiment the utility model is further specified:

Fig. 1 is assemblied in structure diagram on the piston for the efficient combined-type piston ring

Fig. 2 is the work openings azimuth configuration figure of efficient combined-type piston ring Combined gaseous ring in annular groove

Fig. 3 is efficient combined-type piston ring working state schematic cross-section in the annular groove in explosive motor

As shown in the figure, one efficient combined piston-ring compression ring for disposing on every piston among Fig. 1, one monolithic single radial cut compression ring, one oil ring.The ring work openings direction (upper and lower ring opening stagger 180 ° of angle balanced configurations) that goes up of the efficient combined-type piston ring compression ring in the first road annular groove is divided equally the hexagonal angle configuration with compression ring work openings and the oil ring work openings direction in the 3rd road annular groove in the second road annular groove.The all working opening avoid the wrist pin short side to.

The utility model is the efficient combined piston-ring compression ring that is applied to explosive motor, and among Fig. 2, it is made of pressed on ring 1 and lower ring 3, and the outer contour shape after pressed on ring 1 makes up with lower ring 3 is rectangle." the empty wedge shape better effects if at 1 ° of angle that the ring periphery interface of pressed on ring and lower ring is provided with 30.This sky wedge shape can be near whole interface, also can be provided with wedge shape at the partial width of the interface of ring, and namely the length of this wedge shape is longer.

Most preferred embodiment of the present utility model also comprises: all interfaces are provided with the empty wedge shape at 2 ° of-6 ° of angles in the ring of pressed on ring and lower ring.Two different little triangular open space are so just arranged, and there is two drift angles different little triangular

open space

2 and 4 that links to each other in pressed on ring 1 and the interface cross section of lower ring 3 like this, and the length of this wedge shape is shorter.The length of the empty wedge shape of periphery and interior week empty wedge shape length ratio be greater than 10 times.

The cross section of pressed on ring 1 is polygon, and the cross section of lower ring 3 is inverted trapezoidal.Other is labeled as monolithic opening compression ring 5, oil ring 6, piston pin hole 7, piston 8, cylinder jacket 9 among the figure, and A is the upper side clearance between ring and the annular groove, and B is the underside gap between ring and the annular groove, and C is the back of the body gap of the interior all sides of pressed on ring and lower ring and annular groove.

In the explosive motor working procedure, the utility model efficient combined-type piston ring compression ring working state is as follows:

Suction stroke: when instroke finishes, piston arrives is to top dead centre, piston is moved to the lower dead center direction by top dead centre, pressed on ring 1 squeezes the carbon deposit among the air gap A, make the upper side of pressed on ring 1 and the downside of lower ring 2 and upper side and the downside applying of annular groove form sealing surface and band, the lubricating oil among the obstruction side clearance B is unlikely to leak into the back clearance C place of ring.In the trip, upper ring and lower ring has all formed respectively oneself sealing surface and band separately to the side of annular groove, cut off the leakage of oil, the leakage path that are caused by side clearance.

The pressurized gas stroke: intake stroke finishes, and to the motion of top dead center direction, following ring 3 lubricating oils that squeeze among the sideshake B flow out on the cylinder wall left piston by lower dead center.The downside of lower ring 3 and the downside of annular groove fit tightly and form sealing surface or band, and the upper right corner of pressed on ring 1 and annular groove side form band.Formed respectively sealing strip of upper and lower ring and sealing surface have cut off the leakage path that is caused by side clearance.

Expansion space stroke: the pressurized gas stroke is ended, piston is moved to the lower dead center direction by top dead center, because the explosive combustion pressure of the trip intermediate fuel oil acts on the upper side of piston head and piston ring, back clearance C place pressure owing to ring sharply rises again, force the ring and the pressure of cylinder inner wall surface of contact further to increase, be difficult for causing the suspension flutter gas leakage of ring.

Waste discharge gas stroke: expansion space stroke finishes, and to the motion of top dead center direction, the sealing state principle and the pressurized gas stroke of ring are similar by lower dead center for piston.

On The Cycle Working Process by above four-stroke explosive motor can be found out, encircling with annular groove in littler cooperating in the side clearance situation, pressed on ring 1 has certain amount of exercise with lower ring 2 in annular groove, take place so do not have the stuck phenomenon in annular groove of ring, thereby guaranteed the envelope gas that encircles.To reach the working life that increases ring, fuel-economizing, the purpose of the power character of raising explosive motor.

Claims

1. efficient combined piston-ring, piston ring is Combined gaseous ring, comprise that upper ring and a lower ring consists of, the work openings direction of pressed on ring and lower ring staggers 180 ° of angle balanced configurations in an annular groove, the upper plane that it is characterized in that pressed on ring is parallel with the lower plane of lower ring, cross section outline after the upper ring and a lower ring combination is a rectangle, and the ring periphery interface of pressed on ring and lower ring is provided with the empty wedge shape at 30 " 1 ° 30 " angle.

2. by the described efficient combined-type piston ring of claim 1, " the empty wedge shape at angle; ring interface cross section is two little triangular open space, last ring and the following cross section of encircling are respectively polygonal and trapezoidal to it is characterized in that ring and the interior all interfaces of the following ring that encircles being provided with 2 °-7 ° 30.

3. by claim 1,2 described efficient combined-type piston rings, it is characterized in that the ring and the ring periphery interface of ring down " the empty wedge shape at 1 ° of angle that is provided with 30.

4. by claim 1,2 described efficient combined-type piston rings, it is characterized in that the interior all interfaces of ring and the ring that encircles down are provided with the empty wedge shape at 2 ° of-6 ° of angles.

5. by claim 1,2 described efficient combined-type piston rings, it is characterized in that the empty wedge shape of periphery length and interior week empty wedge shape length ratio greater than 10 times.