CN2489103Y - Automatic gap-adjustment speical-shaped piston ring - Google Patents

Abstract

The utility model provides an automatic gap-adjustment special-shaped piston ring which is arranged inside a first channel(or a second channel) gas ring groove of the reciprocating internal-combustion engine. The utility model consists of a main ring and an accessory ring. The commissural surface of the main ring and the accessory ring is respectively provided with two concave-convex assorting surfaces which prevent the main ring and the accessory ring from contra-aperture. The height of the half ring of the diameter of the vertical ring opening of the main ring and the accessory ring is lower than that of the other half ring. The opening clearances of the main ring and the accessory are mounted by staggering 180 DEGs. The utility model has the advantages of always keeping the opening clearances correspondingly symmetric 180 DEGs, thus the utility model is capable of effectively reducing gas leakage of the opening, increasing sealing performance of the internal-combustion engine, decreasing consumption of fuel and oil, reducing exhausting amount of the waste gas, and prolonging service life of the piston ring.

Description

Automatic gap adjusting abnormity piston ring

(1) technical field: the utility model relates to the piston ring that internal combustion engine uses, particularly a kind of automatic gap adjusting abnormity piston ring, and it is installed in first road (or the second road) compression of reciprocating internal combustion engine piston.

(2) background technique: Chinese patent ZL962028576, name be called " piston assembly that has self oiling and adjust the play device " solved between piston ring and the cylinder wall and piston body and piston ring between the vibration gas leakage that exists, opening gas leakage, the problem of sideshake gas leakage; Chinese patent ZL962029203, name is called " the damping piston ring in self oiling and accent crack " and forms by just encircling with inner loop, the joint close face that is just encircling with inner loop is smooth fitting surface, outer rim at this joint close face has annular lubrication groove, just encircling the annular lubricant oil groove that damping function has been arranged with the middle part of the joint close face of inner loop, this annular groove is hole shape on the piston ring cross section.Said structure infiltrates in the annular ditch groove on the joint close face lubricant oil along the joint close face from the annular oil groove at the chief and vice cyclization of piston ring excircle seam face edge, align ring and play damping and cushioning effect with the mutual interference of inner loop, is just improving, the operating conditions of inner loop.just encircle with inner loop joint close face on be provided with radially oiling line, this oiling line aligns, inner loop relatively rotated damping function, just preventing, the circumferential counterpart gas leakage of inner loop, thereby guaranteeing the sealing of piston ring and cylinder wall.

(3) summary of the invention: the purpose of this utility model is to make to continue a kind of automatic gap adjusting abnormity piston ring of development on the basis of obtaining effect, it is formed by just encircling with inner loop, just encircle, respectively be provided with the concavo-convex fitting surface in two places on the joint close face of inner loop, semi-ring height just bad and the vertical collar extension diameter of inner loop is lower than other semi-ring; Just encircling the 180 ° of installations that interlace of opened gap with inner loop.This ring can not only guarantee that not only the sealing of piston and cylinder wall improves internal-combustion engine effect performance, and just can also prevent, the circumferential counterpart gas leakage of inner loop, string oil, reduced the exhaust gas discharging amount simultaneously.

(4), description of drawings

Fig. 1 is the structural representation that the utility model is just encircling.

Fig. 2 is the structural representation of the utility model inner loop.

Fig. 3 is a form structure schematic representation of the present utility model.

Fig. 4 is the local enlarged diagram in A place of the utility model Fig. 1.

Fig. 5 is the B place partial cross section enlarged diagram of the utility model Fig. 3.

Fig. 6 is the local enlarged diagram in C place of the utility model Fig. 3.

Fig. 7 is the local enlarged diagram in D place of the utility model Fig. 3.

(5), embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Shown in Fig. 1,2,3,4,5,6,7.Automatic gap adjusting abnormity piston ring by just encircle 4 and inner loop 3 form, just encircling 4, respectively be provided with the concavo-convex fitting surface of the anti-counterpart in two places on the joint close face 1,2 of inner loop 3, just encircling 4 and the semi-ring height of inner loop 3 vertical collar extension diameters be lower than other semi-ring, form concavo-convex joint close face 1,2.Just encircling 4 and the 180 ° of installations of staggering of the opened gap of inner loop 3.This piston ring can remain 180 ° of corresponding symmetries of opened gap, has reduced opening gas leakage effectively, thereby improves the sealing of cylinder of internal-combustion engine.

Claims (1)

1, a kind of automatic gap adjusting abnormity piston ring, it is formed by just encircling (4) and inner loop (3) two rings, it is characterized in that: just encircle the concavo-convex fitting surface that respectively is provided with the anti-counterpart in two places on the joint close face of (4), inner loop (3), the semi-ring height that just encircles the vertical collar extension diameter of (4) and inner loop (3) is lower than other semi-ring, and the opened gap that just encircles (4) and inner loop (3) interlaces 180 °.

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