CN2460731Y - Sealed piston ring of internal-combustion engine - Google Patents

Abstract

The utility model relates to a sealed piston ring of an internal-combustion engine for being installed on a cylinder of an internal-combustion engine, composed of an upper ring and a lower ring. The upper ring is provided with a ring opening, and the lower ring is provided with a stepped ring opening; the ring openings are staggered, and the upper ring is arranged on the lower ring. With the advantages of simple structure, convenient installation and operation, low cost, and long service life, the utility model saves oil and reduces pollution.

Description

The sealing piston of internal-combustion engine ring

The utility model relates to a kind of sealing piston of internal-combustion engine ring of adorning usefulness on cylinder of internal-combustion engine.

Piston ring is requisite on the cylinder of internal-combustion engine.The piston ring that uses is to have a collar extension on metal ring at present, and in use owing to be worn, the collar extension gap increases gradually, and air leakage also increases thereupon in the cylinder, cause internal combustion locomotive power to descend, oil consumption increases, burn oil, smoke evacuation is big, and contaminated air is even cause locomotive not use.For this reason, application number be 96221231 " the sealed type internal-combustion engine piston ring " once attempted to solve the cylinder leakage tester problem that piston ring causes because of wearing and tearing, this ring is to be stacked up and down to be sleeved in one by two outer shrouds to constitute on the ring, in use since two outer shrouds up and down cylindrical to wear and tear into change incomplete same, occurring one sometimes, to wear and tear into change big, another is less relatively, can form like this an outer shroud with interior annular composition from, make inside and outside ring poorly sealed, even lose sealing, still do not reach long excellent sealing effect, and because this ring is to be made of three rings, install, produce all pretty troublesome, and the ring intensity also not enough.

The purpose of this utility model provides a kind of improved internal combustion engine sealed piston ring, can solve piston ring well trouble and the long sealing problem of cylinder are installed.

The purpose of this utility model is achieved like this, constitute by two identical metal rings of size up and down, on encircle flexible opening, on the following ring step type elastic opening is arranged, in being contained in cylinder, its collar extension is enclosed in together.

The utility model is simple in structure, and is easy to install, easily produces, and cost is low, and long service life is effective, and fuel-economizing reduces and pollutes, and easily applies, and remarkable economical and social benefit are arranged.

Below in conjunction with accompanying drawing structure of the present utility model is elaborated.

Fig. 1 is a worm's eye view of the present utility model.

Fig. 2 is a plan view of the present utility model.

Fig. 3 is a sectional view of the present utility model.

Fig. 4 is following loops composition.

Fig. 5 is last loops composition.

Provide by Fig. 1, Fig. 2, the utility model be by last ring and down ring constitute, on encircle flexible collar extension 3 on 1, under encircle step type elasticity collar extension 4 arranged on 2, the elasticity collar extension 3 of last ring 1 staggers mutually with the step type elasticity collar extension 4 of ring 2 down, on encircle 1 and be contained in down and encircle on 2, two ring body sizes are identical.

The utility model can adopt the material that resilient metallic material is made or original piston ring adopted to make, and its elastic opening gap does not need to be strict with, but can not be less than hot Peng caused length (coefficient) that rises.

In use, earlier other (oil rings) are encircled in the annular groove of packing into, then again ring of the present utility model is contained in the annular groove, load ring earlier, again collar extension is staggered to pack into and go up ring, collar extension is preferably in the two ends (two collar extensions do not allow overlapping up and down, and dress must stagger) of same diameter, can use in the cylinder of packing into then.

Working condition of the present utility model is, being closed in the ring collar extension place gas of going up that pressurized gas in the firing chamber pierce novel ring when internal combustion engine outwards has the upper body to block, there are the lower ring body shelves firmly can not pass through in the time of downwards, gas has only the inner chamber that enters piston from the collar extension 3 of last ring 1, when at this moment gas is pressed to the interior arc face of piston ring or is descended the collar extension 6 of ring, because of collar extension is step type, 2 the collar extension place step body arc face of encircling down blocks and can not pass through, the last plane of the lower plane of piston ring and annular groove is close to, gas can not pass through, thereby the gas place of arrival is blocked the purpose that has reached sealing entirely, in use, even the collar extension of movable plug ring increases tightness and the sealing state also do not change ring, because of ring up and down respectively has its independence and its elasticity, so can ad initio can both keep sealing state to end.

Because of internal-combustion engine kind model is a lot,, should decide according to the specification size of internal-combustion engine so size dimension of the present utility model does not wait.Each encircles top and bottom should keep smooth, also will keep certain degree of finish, outside elastic force should be arranged, with the long term seal of guaranteeing to encircle.

Claims (1)

1, a kind of sealing piston of internal-combustion engine ring, be to constitute by last ring and following ring, it is characterized in that upward flexible collar extension (3) of ring (1), step type elasticity collar extension (4) is arranged on the following ring (2), the elasticity collar extension (3) of last ring (1) staggers mutually with the step type elasticity collar extension (4) of encircling (2) down, and last ring (1) is contained in down on the ring (2).

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