SU769043A1 - Engine combystion chamber - Google Patents

Description

On 1fig: i shows a combustion chamber, a longitudinal section; in fig. 2 - the same plan view; in fig. 3 - combustion chamber with oblique generatrix, cross section; in fig; 4 - the same, with toroidal generatrix and protrusion at the bottom; in fig. 5 - the same, with a toroidal generatrix and a smooth bottom.

The combustion chamber is located in the bottom of the piston 1 and communicated with the overmolded space 2 by a narrow elongated neck 3, smoothly mated with the bottom of the bulge 1. Sidewalls 4 of the chamber 1 are matched with the bottom of the chamber along the radius.

The chamber has two planes of symmetry: transverse 5 and longitudinal 6. The width of the neck and the depth of the chamber can have a constant value in order to create a constant angular velocity of the annular vortex.

The sides 4 of the chamber can be made in the form of inclined planes or curvilinear surfaces intersecting on the plane of longitudinal symmetry 6 above the bottom 1. The sides 4 are smoothly joined by rounded edges with the bottom of the piston 1.

A prerequisite is the presence of a smooth curved surface, made along a radius, which connects the bottom of the combustion chamber and the sides 4. The center of the combustion chamber is located on the axle.

When moving to the top dead center at the compression stroke, the air displaced from the overgrown space 2 enters the chamber through the narrow throat 3 into the chamber and, hitting the bottom of it, spreads away from the plane of the longitudinal symmetry 6 of the chamber. Further, moving along the sides 4, the air in the chamber is drawn into rotational motion, creating two independent ring vortices.

The fuel from the nozzle 7 is directed to the surface of the sides 4, close to them, or to the boundary of two ring vortices in

plane of longitudinal symmetry 6 of the combustion chamber.

When fuel is supplied to sides 4, it is applied to a large area, due to the small angle of the fuel meeting the side, which contributes to its rapid evaporation, and the intense vortex contributes to its involvement in the combustion reaction. This provides a slower

pressure buildup.

When fuel is fed into the camera's npocTpartcTBd, an intense vortex “captures the jet of fuel. The mixture is concentrated in a vortex flow due to centrifugal forces.

on the periphery of the ring vortex. Ignition occurs in the inner annular zone of the mixture, which also does not cause a high rate of pressure build-up.

Claims (2)

1. The combustion chamber of the engine with compression ignition, placed in the bottom of the piston symmetrically to its axis and provided with an elongated neck, smoothly coupled to the bottom of the chamber, characterized in that, in order to reduce the noise level during combustion, the chamber is made elongated and symmetrical in cross section with a ratio of length to width of 5: 1, and its side the sides are aligned with the bottom of the chamber along the radius and their extensions intersect above the piston head. 2. The camera according to claim 1, characterized in that the cross-sectional area of the chamber decreases from the center to the periphery in accordance with the dependence  - about p where y is the distance of a given cross section from the plane of transverse symmetry; FO is the cross-sectional area of the chamber in the plane of transverse symmetry; g - the radius of the cylinder engine. Sources of information taken into account during the examination 1. Patent of Germany No. 864475, cl. 46a2, 79/01, publ. 1952. Fig.Z F FIG, $ FIG.