CN2346937Y - Double-piston ring piston - Google Patents

Abstract

The utility model provides a double-piston ring type piston, which belongs to the technical field of internal combustion engines. The utility model can solve the problems that air leakage, flame over and engine oil combustion occur occasionally when the existing pistons do the reciprocating movement. The utility model is provided with a piston, an upper piston ring and a lower piston ring which are in contact with each other are arranged respectively in ring grooves of an upper piston of the piston, and an opening of the upper piston ring and an opening of a lower piston ring are mutually staggered. The utility model has the advantages that the output power of the internal combustion engine can be raised, and the noise can be reduced.

Description

Double-piston ring type piston

The utility model relates to technical field of internal combustion engines, specifically a kind of double-piston ring type piston.

As everyone knows, piston is in internal combustion engine cylinder jacket in the reciprocating process, and is should sliding effect good, and seal action is arranged again, owing between piston and the cylinder sleeve certain interval is arranged, this will lean on the piston ring on the piston to be sealed.Mostly be that a piston ring is installed in each piston ring groove on the existing piston, and an opening is arranged all on each piston ring, piston is when the compression work done like this, pressurized gas in the cylinder sleeve are then by the opening on first piston ring, enter the interval of first piston ring and second piston ring, and then formed gas leakage, scurried fiery phenomenon by the opening on second piston ring; And piston is in breathing process, and the machine oil around the piston then is inhaled into the firing chamber along above-mentioned passage, has produced burning machine oil phenomenon, makes thus that the internal-combustion engine output power reduces, noise increases.

The purpose of this utility model is for solving above-mentioned insufficient section, a kind of double-piston ring type piston is provided, it installs two piston rings in each piston ring groove of piston, and make two opening mutual dislocation on the piston ring, play seal action with this, it can prevent gas leakage that piston produces during to-and-fro motion, scurry fiery phenomenon and burning machine oil phenomenon in cylinder sleeve.

The purpose of this utility model is achieved through the following technical solutions: double-piston ring type piston, it has piston 1, be separately installed with the upper piston ring 3 and the lower piston ring 4 that are in contact with one another in the upper piston ring groove 2 of piston 1, the opening 5 of upper piston ring 3 and opening 12 mutual dislocation of lower piston ring 4.

For further realizing the purpose of this utility model, can also take following technological scheme: be separately installed with the upper piston ring 10 and the lower piston ring 9 that are in contact with one another in the lower piston ring groove 11 of piston 1, the opening 14 of upper piston ring 10 and opening 15 mutual dislocation of lower piston ring 9.

Advantage of the present utility model: one, two piston rings are installed in each piston ring groove of piston because it adopts, and make two opening mutual dislocation on the piston ring, therefore it can prevent gas leakage that piston produces during to-and-fro motion, scurry fiery phenomenon and burning machine oil phenomenon in cylinder sleeve, so improved the output power of internal-combustion engine, and reduced noise; Two, simple in structure, easy making, with low cost, using effect is quite obvious, it is adapted at using on the various internal-combustion engines.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is the A-A view of Fig. 1;

Fig. 4 is the B-B view of Fig. 1;

Fig. 5 is the C-C view of Fig. 1.

The contrast accompanying drawing describes in further detail the utility model in conjunction with the embodiments below.

Double-piston ring type piston of the present utility model, it has piston 1, be separately installed with the upper piston ring 3 and the lower piston ring 4 that are in contact with one another in the upper piston ring groove 2 of piston 1, the opening 5 of upper piston ring 3 and opening 12 mutual dislocation of lower piston ring 4, it can prevent gas leakage that piston produces during to-and-fro motion, scurry fiery phenomenon and burning machine oil phenomenon in cylinder sleeve; Be separately installed with the upper piston ring 10 and the lower piston ring 9 that are in contact with one another in the lower piston ring groove 11 of piston 1, the opening 14 of upper piston ring 10 and opening 15 mutual dislocation of lower piston ring 9, it can further prevent gas leakage that piston produces during to-and-fro motion, scurry fiery phenomenon and burning machine oil phenomenon in cylinder sleeve.Oil ring groove 8 on the utility model piston 1, lubricating ring 7, and axis hole 6,13 is prior art, just do not give unnecessary details one by one here.

Claims (2)

1, double-piston ring type piston, it has piston (1), it is characterized in that: be separately installed with the upper piston ring (3) and the lower piston ring (4) that are in contact with one another in the upper piston ring groove (2) of piston (1), opening (12) mutual dislocation of the opening (5) of upper piston ring (3) and lower piston ring (4).

2, double-piston ring type piston according to claim 1, it is characterized in that: be separately installed with the upper piston ring (10) and the lower piston ring (9) that are in contact with one another in the lower piston ring groove (11) of piston (1), opening (15) mutual dislocation of the opening (14) of upper piston ring (10) and lower piston ring (9).

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