Piston engine with inlet and outlet port - has piston face with sinusoidal groove in which cam in cylinder is operated to open/close ports

摘要

The piston engine has a cylinder with an inlet and an outlet port, in which the piston executes a longitudinal stroke. A means of port control comprises recesses in the sleeve surface of the piston (4). The piston executes a simultaneous rotation about its longitudinal axis (7) via a gearwheel (6). The stroke movement is achieved via a sinusoidal control groove (12) in the sleeve face of the piston, and operates a cam (13) fixed in the cylinder (1). ADVANTAGE - Provides inlet and outlet port control without the need for a valve in the port.