CN2856456Y

CN2856456Y - Engine piston having dual-ring multiple oil discharging holes structure

Info

Publication number: CN2856456Y
Application number: CN 200520112697
Authority: CN
Inventors: 何力
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-08
Filing date: 2005-07-08
Publication date: 2007-01-10
Anticipated expiration: 2015-07-08

Abstract

An engine piston with a double gas ring multiple oil drain hole mechanism comprises a piston gas ring groove, a double piston gas ring (5) disposed in the widened groove of the piston gas ring, 2 or 4 added one sided oil groove inner holes (6), 2 or 4 added one sided oil groove outer holes (7) and each oil drain hole on the left and right side of the piston pin hole (10). By applying the double gas ring structure, the utility model improves air tightness, reduces cylinder air leakage and improves the effective work of the burned oil. And by adding the outer and inner oil drain holes of the oil groove which is convenient for recovering the extra machine oil, the utility model achieves better kinetic energy, less oil consumption and better environment protection effect.

Description

The engine piston of the many oil drainage hole structures of two compression rings

Technical field

The utility model relates to a kind of engine components, more particularly, relates in particular to the engine piston of a kind of pair of many oil drainage hole structures of compression ring.

Background technique

Present existing engine piston is single compression ring structure, the inside and outside one-sided oil drainage hole quantity of oil groove generally also is not enough to machine oil is recycled to crankcase, there is not pressure releasing hole under the piston pin hole, the increase of cylinder air leakage can appear in the piston of this structure after using the regular period, thereby cause motor effectively not do work, power performance descends, and oil consumption is big, crankcase pressure is big, mainly be because the piston of this structure: there is the gap in the piston collar extension, and after using the regular period, piston ring scuffing, piston ring and cylinder wall gap increase, cause air leakage to increase, when oil inflame is expanded because the reason of gas leakage causes all being converted to the kinetic energy of crankshaft-link rod, thereby and the increase of air leakage cause in the crankcase oil and gas content to increase pressure increasing, the machine oil that the inside and outside hole number of oil groove is not enough to consume more arranges, and piston pin hole no oil drainage hole down can not make machine oil effectively be recycled to crankcase.

Summary of the invention

At the deficiency of prior art, the purpose of this utility model is to provide that a kind of kinetic energy is stronger, oil consumption reduces, the engine piston of environmental protection more.

Goal of the invention of the present utility model is achieved by the following technical solution: comprise the piston gas ring groove, it is characterized in that: two bar piston gas rings are housed in having increased the described piston gas ring groove of width; One-sided oil groove endoporus is set up 2 or 4; The outer hole of one-sided oil groove is set up 2 or 4; Respectively set up 1 oil drainage hole about under piston pin hole.

The utility model is owing to adopted double gas ring structure, the dicyclo collar extension is staggered, increased tightness, reduce the cylinder leakage tester amount, improved effective acting of fuel oil, increased the inside and outside oil drainage hole of oil groove in addition, be convenient to the recovery of the machine oil of many consumptions, therefore increased the oil drainage hole under the piston pin hole, the passage of oil-air pressure balance is provided, had that kinetic energy is stronger, oil consumption reduces, characteristics of environmental protection more.

Description of drawings

Fig. 1 is the plan view of at present common piston.

Fig. 2 is the plan view of the utility model piston.

Fig. 3 is the A-A sectional drawing of the utility model piston.

Fig. 4 is the B-B sectional drawing of the utility model piston.

Number in the figure explanation: 1 piston body; The 2 piston gas ring grooves of not widening; The 3 piston gas ring grooves of widening; 4 wall scroll piston gas rings; 5 pairs of bar piston gas rings; 6 oil groove endoporus; The outer hole of 7 oil grooves; 8 piston oil annular grooves; Oil drainage hole under 9 piston pin holes (about each 1); 10 piston pin holes.

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

Embodiment

Be present common a kind of engine piston among Fig. 1, as can be seen, this piston is 4 stroke engine pistons, the piston gas ring groove 2 that has twice not widen, the per pass compression only is furnished with wall scroll piston gas ring 4, and oil groove endoporus 6 has 4, the outer hole 7 of oil groove has 3, and piston pin hole does not have oil drainage hole 10 times.

Be the utility model piston among Fig. 2, on piston body 1, by doubling to widen the piston gas ring well width, in the piston gas ring groove of widening 3, embed two bar piston gas rings 5, when embedding two bar piston gas ring 5, note collar extension is staggered; In addition,, can increase the oil drainage hole in the outside in the piston oil annular groove 8, oil groove endoporus 6 be increased to 8 by 4, the outer hole 7 of oil groove is increased to 7 by 3 as this example according to the size of different model piston.Among Fig. 3, respectively increase an oil drainage hole 9 under the piston pin hole for about 10 times at piston pin hole, the aperture of this oil drainage hole 9 is generally Φ 1.8mm, with the piston pin hole inclination angle be 30 °.Among Fig. 4, indicate oil groove endoporus 6, the cross section view in the outer hole 7 of oil groove.

Claims

1. the engine piston of the many oil drainage hole structures of two compression rings comprises the piston gas ring groove, it is characterized in that: two bar piston gas rings (5) are housed in having increased the described piston gas ring groove of width; One-sided oil groove endoporus (6) is set up 2 or 4; The outer hole (7) of one-sided oil groove is set up 2 or 4; About under the piston pin hole (10), respectively set up 1 oil drainage hole (9).