CN2398429Y - Piston ring - Google Patents

Abstract

The utility model belongs to a piston ring of an engine cylinder. Both ends of the piston ring are provided with two superimposed surfaces. The two superimposed surfaces have the key points that the two superimposed surfaces are bevels, the two bevels have the same angle and opposite directions, one bevel is upward, and the other bevel is downward. The utility model has the advantages that because the two bevels are mutually superimposed in the horizontal direction of the piston ring toward the center of a circle and are mutually shielded, and a phenomenon of gas leakage can be not generated. The utility model with better sealing performance better solves an exhaust problem under an engine, saves fuel, reduces the carbon deposit of a machine, and decreases environment pollution.

Description

Piston ring

The utility model belongs to a kind of piston ring that the cylinder piston is used.

The piston ring of prior art, according to the piston of different model, its piston ring also model is different, but their structures are all basic identical, are the opening annulus, and the two ends of ring are flush, and it is an annulus that two ends, compression back close up.This piston ring is because two ends are pressured tight rear encloseds, and along with the continuous motion and the friction of piston, the elasticity of piston ring slowly diminishes, piston ring fluffs gradually, promptly Feng Bi two ends begin to separate, and so just cause exhaust under the motor, so that do not reach design power.Moreover the gas leakage of piston ring reduces inner pressure of air cylinder, causes fuel combustion incomplete, causes carbon deposit in the cylinder barrel, has both wasted the energy, has reduced the working life of machine again.Particularly some diesel engine owing to exhaust is serious down, can not fully burn fuel, and the gas of discharge is black smog, has so both wasted fuel, causes the machine carbon deposit, has also polluted atmosphere environment.The patent No. of inventor's invention is 93200917.4 piston ring, is the piston ring that a kind of two ends have stack face, and two stack faces are the plane, and when two ends closed up, the stack face at two ends mutual superposition had played good sealing process.

The purpose of this utility model is, on the basis of last invention, designs a kind of more reasonable structure, and the better piston ring of closed performance is for the piston ring series product provide a kind of new varieties.

The utility model also is the piston ring that a kind of two ends have stack face (1), it is characterized in that: stack face (1) is an inclined-plane (as shown in Figure 3, Figure 4), and two bevel angles are identical, and direction is opposite, and one towards last, and one faces down.

The utility model has the advantages that: because stack face is the inclined-plane, so in use even piston ring elasticity diminishes, ring body is loose a bit, can not produce gas leak phenomenon yet, because after two inclined-plane stacks, on the direction of the center of circle, there are two inclined-planes to block mutually, in the piston ring level so can not produce gas leak phenomenon.Will be better through testing this piston ring than the inventor's last invention closed performance, thus the often problem of gas leakage of piston ring solved, make fuel combustion more complete, guaranteed the normal output of machine, reduced the carbon deposit in the cylinder barrel, reduced environmental pollution.

Description of drawings:

Fig. 1: substantially horizontal schematic representation of the present utility model

Fig. 2: C is to schematic representation

Fig. 3: A is to schematic representation

Fig. 4: B is to schematic representation

1. stack face 2. piston rings

Claims (1)

1. A kind of piston ring is shaped as the opening annulus, at two opening ends of piston ring (2) a stack face (1) is arranged respectively, and it is characterized in that: stack face (1) is an inclined-plane, and two bevel angles are identical, and direction is opposite, and one towards last, and one faces down.

Images