SU36092A1 - Internal combustion engine with two pistons opposing in one cylinder - Google Patents

Description

The invention relates to internal combustion engines with two pistons opposing in one cylinder, with an annular combustion chamber and a channel of an additional chamber for compressed air opening tangentially into it.

In the proposed engine, the annular chamber is formed either by a cylindrical protrusion of the piston and the wall of the cylinder, provided with a bore with an annular recess at the bottom, with the same diameters of the pistons, or with a bore in the wall of the cylinder and the piston head of small diameter, with pistons of different diameters.

In FIG. 1 shows a vertical section in two versions of an internal combustion engine with two pistons opposing in one cylinder; FIG. 2 is a cross section of it.

In the cylinder a (Fig. 1) there are two opposing pistons b v, with a single diameter. On the piston b there is a cylindrical protrusion forming with the cylinder wall an annular combustion chamber e into which a channel of the additional chamber opens tangentially for air compression and a nozzle g for supplying fuel.

During engine operation, shortly before both pistons b c get to the internal dead center, from the nozzle g, which is single or multi-jet

or by a flat-jet nozzle, a jet or bundle (p d) of jets is discharged to the mouthpiece of the chamber channel / with compressed air, and after that the supply of liquid fuel is interrupted. In view of the fact that now the air from the cylinder rushes into the chamber / with compressed air (arrows 7), the liquid fuel is also trapped together.

Due to the combustion of the fuel in the chamber / with compressed air, the gas pressure rises in the latter and the air rushes back into the cylinder (arrows //). In view of the fact that the mouthpiece of the chamber with compressed air is directed tangentially to the annular chamber, in the latter this causes the circulation movement of air (in the direction of the arrow //). Liquid fuel is now again injected into the circulating air, which, in view of the continuous flow of air, burns unhindered and without residue. In order to prevent liquid fuel, which can penetrate the walls of the annular chamber e, onto the sliding surface of the piston c, the wall of the cylinder is provided with a bore L turning downward into the annular recess L The pump for supplying liquid fuel can, under the first injection, be operated under high the pressure of the jet L, and at the second injection, with a small pressure of the jet B or vice versa. In the event that the diameters of the pistons b and c are different, as shown on the left side of FIG. 1, an annular combustion chamber E is formed by a piston d head D of a smaller diameter and a bore / g with an annular recess i in the wall of the cylinder. The piston may be cylindrical, as shown by a dotted line, or provided with a conical nozzle k. The subject matter of the invention. An internal combustion engine with two pistons opposing in one cylinder, with an annular combustion chamber and a channel of an additional chamber tangentially opening into it for compressing air, characterized in that with the same diameter of pistons b and with annular chamber e formed by a cylindrical protrusion piston b and the cylinder wall, provided with a bore li, which extends below into the annular recess r, and in the case of different diameters of both pistons, the annular chamber e is formed by a bore L in the cylinder wall and the piston head d is smaller of diameter.

-f FIG