ROTARY-PISTON INTERNAL COMBUSTION ENGINE WITH PROLONGED EXPANSION Russian patent published in 1998 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: engine has housing with working surface made by movement of center of circumference over Cassino oval. Rotor has sliders hinge-coupled with pistons and provided with rollers at both sides, rollers being arranged in two-side races made in housing. Axes of rollers are displaced relative to axes of sliders to side opposite to direction of rotor rotation through value K < 0,5H_s. Center of rotor is displaced relative to center of working surface of housing to side opposite to direction of rotor rotation through values found from formula l₀= l₂(ρ-1)/2ρ where H_s is width of slider in rotor slot; ρ = e₂/e₁>1 is prolonged expansion degree; e₁ is distance between outer surface of rotor and working surface of housing in suction zone; e₂ is distance between outer surface of rotor and working surface of housing in zone of expansion. EFFECT: enlarged operating capabilities. 4 dwg