CN2773327Y

CN2773327Y - Piston of IC engine

Info

Publication number: CN2773327Y
Application number: CNU200420046566XU
Authority: CN
Inventors: 胡济荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-31
Filing date: 2004-05-31
Publication date: 2006-04-19
Anticipated expiration: 2014-05-31
Also published as: WO2005116434A1

Abstract

The utility model discloses a novel piston of an IC engine, which comprises a head part with an air valve dent. One side of the head part is provided with a surface bulge (1) which is matched with the inner surface of a cylinder blast chamber and keeps a certain gap, the other corresponding side is provided with a small bulge (2), and the joint surface of the small bulge and a triaxial ellipsoid dent is provided with smooth transition. The utility model is matched with a cylinder of the IC engine and can form an intensive turbulent current in the blast chamber to make gasoline and air mixed more fully. The utility model has the advantages of high burning speed, high circulating heat efficiency, low oil consumption and low pollution discharge.

Description

New piston for Internal combustion engines

Technical field

The utility model relates to the improvement to internal combustion engine component, relates in particular to a kind of new piston for Internal combustion engines.

Background technique

The head of piston for IC engine of the prior art is flat-top, male-type mostly, they all exist an important defective, be exactly that piston is near top dead center the time, the turbulence intensity of air-flow is lower, and organizes relatively difficulty of air motion, burns rapidly thereby limited high speed machine mixed gas in utmost point short time inside cylinder firing chamber, delivery temperature is higher, thermal efficiency of cycle reduces, and fuel consumption rate raises, and toxic emission is higher.

Summary of the invention

Deficiency at the prior art existence, the purpose of this utility model provides a kind of novel combustion in IC engine space, in compression and combustion process, improve turbulence intensity, make gasoline and air mixing more abundant, velocity of combustion is fast, the thermal efficiency of cycle height, oil consumption is low, the new piston for Internal combustion engines that blowdown is few.

The realization the technical solution of the utility model is as follows: a kind of new piston for Internal combustion engines, comprise the valve pit that head, head are provided with, one side head have one with cylinder body firing chamber internal surface rat adaptive and that keep certain interval; Another side on the other side has a small embossment; A triaxial ellipsoid body pit is arranged between two projectioies; The surface that joins all has rounding off between two projectioies and the triaxial ellipsoid body pit.

The cylinder of internal-combustion engine of suitable internal surface matches the utility model with having with it, has formed a kind of new firing chamber.

Advantage of the present utility model is that it matches with cylinder of internal-combustion engine, in compression and combustion process, can form strong turbulent flow in the firing chamber, makes gasoline and air mixing more abundant, and velocity of combustion is fast, the thermal efficiency of cycle height, and oil consumption is low, and blowdown is few.

Description of drawings

Fig. 1 is a sterogram of the present utility model;

Fig. 2 is the structural representation of model utility in cylinder body.

Label declaration in the accompanying drawing

1, projection 2, projection 3, triaxial ellipsoid body pit

4, squish gap 5, combustion space

Embodiment

How further specify the utility model below in conjunction with accompanying drawing 1 and Fig. 2 realizes:

As shown in Figure 1 and Figure 2, be on the ignition internal combustion engine of 57mm at diameter of cylinder, the firing chamber internal surface of cylinder head is designed to the hemisphere type of radius 32mm, and the outer surface sphere of projection 1, projection 2 is radius 30.8mm; The ellipsoid major axis radius of triaxial ellipsoid body pit 3 is 22.2mm, and minor axis radius is 14.9mm.

Because piston crown has projection 1, projection 2 and triaxial ellipsoid body pit 3, in the process of compression and burning, because the squeezing action of the 4 pairs of air-flows in squish gap can produce Driving force to gas at triaxial ellipsoid body pit 3 internal surfaces, thereby make gas high-speed motion in combustion space 5, make and form strong turbulent flow in the firing chamber, gasoline and air mixing are more abundant, and velocity of combustion is fast, the thermal efficiency of cycle height, oil consumption is low, and blowdown is few.All there is rounding off on all of piston crown surfaces that joins, have avoided the generation of pinking effectively.

Claims

1, a kind of new piston for Internal combustion engines comprises the valve pit that head, head are provided with, and it is characterized in that: one side described head have one with cylinder body firing chamber internal surface rat adaptive and that keep certain interval (1); Another side on the other side has a small embossment (2); A triaxial ellipsoid body pit (3) is arranged between two projectioies; The surface that joins between projection (1), projection (2) and the triaxial ellipsoid body pit (3) all has rounding off.

2, a kind of new piston for Internal combustion engines according to claim 1 is characterized in that: the outer surface sphere of projection (1), projection (2) is radius 30.8mm; The ellipsoid major axis radius of triaxial ellipsoid body pit (3) is 22.2mm, and minor axis radius is 14.9mm.