FIELD: engine engineering. SUBSTANCE: engine has cylinder with piston, crank chamber with inlet passageway wherein a check valve is mounted, outlet ports, and injection system or carburetor. The engine is also provided with a cooler of supercharged air made up as a diffuser, automatic inlet tape valve mounted in the cylinder head and provided with a shock-absorbing device that arrests movement and absorbs a shock at the end of the stroke of the piston. The fuel injection system or carburetor are mounted upstream from the inlet passageway inside the neck of the cylinder. EFFECT: increased longevity. 4 cl, 2 dwg
