RU1800078C - Two-stroke internal combustion engine - Google Patents

Abstract

SUMMARY OF THE INVENTION: A two-stroke straight-through blow-off and gas-assisted gas distribution system consists of a fixed cylinder liner 1, movable cylinder-spools 2 forming annular purge 3 and exhaust 4 windows, cylinder liner 1 is pressed into the engine block 5, and a swirler 6 is installed in the purge window purge air, movable pistons 7 of the engine are located in the cylinder liner 1, levers 8 of the spool drive are mounted on the movable spool cylinders 2. The engine operates as follows. When the pistons 7 are located in the TDC, the spool cylinders 2 are pressed against the cylinder sleeve 1. The spool cylinders 2 are pressed by the drive levers 8, which are driven from the gas distribution cam. After the front section of the piston 7 passes through the joint zone between the cylinder liner 1 and the spool cylinder 2, the latter begins to move at a speed equal to the piston speed. The resulting annular gaps form a purge 3 and an inlet 4 of the window, while the swirl of purge air 6 gives the air a rotational movement. When the pistons 7 move towards TDC, the spool cylinders 2 approach the cut of the cylinder liner 1 simultaneously with the piston 7 and close the purge 3 and outlet 4 windows. The pistons 7 pass into the cylinder liner 1, compressing the working fluid, when the pistons 7 approach the TDC, fuel is supplied, it is burned and the working fluid expands, i.e. The cycle repeats, 2. ill. w Ј 00 о о о VI 00

Description

Figure 1

FIELD OF THE INVENTION This invention relates to two-stroke reciprocating piston engines.

The aim of this invention is to eliminate the above drawback, namely, reducing the loss of stroke of the engine for gas exchange,

Fig. 1 shows a cross-sectional view of a two-stroke engine with a straight-through purge and a spool system. Gas distribution when the pistons are at bottom dead center and open spools. Figure 2 - section of the engine when the pistons are in top dead center and closed spools.

The two-stroke engine with a straight-through purge and valve control system consists of. a fixed cylinder liner 1, movable spool cylinders 2, which form annular inlet 3 and 4 outlet windows, the cylinder liner is pressed into the engine block 5, the swirling 6-purge air is installed in the inlet window, and the cylinder liner contains movable pistons 7 of the engine; on the movable cylinders-zolrtnik 2 installed levers drive spools 8 .. ...

A two-stroke engine with a straight-through purge and a valve control system operates as follows. ...;

. With the expansion of gases, the pistons 7 are consumed: in different directions from the position of V.M.T. (figure 2) in the provisions of N.M.T. (figure 1). When the pistons 7 in V.M.T. the spool cylinders 2 are pressed against the cylinder sleeve 1. The spool cylinders 2 are pressed by the drive levers 8, which are driven from the camshaft. After the front section of the piston 7 passes through the joint zone between the cylinder liner 1 and the spool cylinder 2, the latter begins to move at a speed equal to the piston speed. The resulting annular gaps form the inlet 3 and

exhaust 4 windows, while the swirl of purge air 6 gives the air a rotational movement. There is a release and cleaning of the engine cylinder from exhaust gases, From N.M.T. the pistons 7 move towards each other, while the spool cylinders 2 also move synchronously with the pistons 7. The cylinder is purged and filled with a working fluid. The spool cylinders 2 approach the cut of the cylinder liner 1 simultaneously with the piston 7 and close the inlet 3 and outlet 4 windows. Pistons. 7 passes into the cylinder liner 1, compressing the working fluid, when the pistons approach

7 to V.M.T. fuel is supplied, its combustion and subsequent expansion of the working fluid, i.e. the cycle repeats.

The use of the proposed technical solution, in comparison with the prototype, allows to reduce the loss of working stroke for gas exchange; reduce the mass of the pistons by reducing their length, since there is no need to block the blow-off windows with the piston; there is no risk of piston rings breaking due to their entry into the liner windows. The proposed design can also be used in loop and valve-slotted gas distribution systems.

Claims (1)

The claims A two-stroke internal combustion engine comprising at least one cylinder with a piston having inlet and outlet windows and a cylindrical spool located in the cylinder kinematically connected to the crankshaft: to provide reciprocating movement, characterized in that, in order to improve technical and economic performance, the spool is equipped with unsupported part installed in the cylinder and forming annular holes with the spool communicating with the inlet and outlet windows. FIG. 2