INTERNAL COMBUSTION ENGINE Russian patent published in 2000 - IPC

FIELD: transport engineering; aircraft industry. SUBSTANCE: proposed engine has fixed housing with end face covers provided with suction and discharge ports, two pairs of radial pistons, operating shaft mechanically coupled with pistons, nozzles and spark plugs. Outer cylinder with inner radial pistons is press- fitted in fixed housing. Rod locks are rigidly secured in middle in radial pistons. Inner cylinder with compression rings and outer radial pistons with rigidly secured rod locks in middle part are installed between right- hand and left-hand covers of housing. Two pins are secured in shaft space in its cross section. Four roller antifriction bearings are press-fitted on ends of pins. Hollow piston with end face curvilinear guides is freely fitted for moving along axis. Hollow piston had longitudinal channels with freely fitted-in fixed ends of rod locks and channels with freely fitted-in ends of rod locks movable in radius. Shaft is installed on antifriction bearings in housing covers. Spark plugs are installed in one of covers, and nozzles with spools, in other cover. Nozzles provided control of gas delivery from bottles. Spring-loaded pipeline is installed in shaft space for provision of lubrication of movable engaging parts. EFFECT: increased efficiency and power output. 2 cl, 8 dwg