Alternating piston rotary engine with unidirectional transmission devices

摘要

A rotary internal combustion engine has first and second paddles, hubs and side-discs substantially sealingly in the internal-combustion-cycle chamber and freely rotatable on a drive shaft, First and second gear trains are for rotation by the respective end portions of the hubs. Each of the first and second gear trains has (A) a first unidirectional transmission device for rotationally connecting one of the hubs to the drive shaft in a first rotational direction and disconnecting the one of the hubs from the drive shaft in a second, opposite relative rotational direction and (B) a second unidirectional transmission device with a gear reduction for rotationally connecting the drive shaft to the one of the hubs in the first rotational direction with a reduced rotational speed relative to a rotational speed of the rotational connection of the first unidirectional transmission device and disconnecting the drive shaft from the one of the hubs in the second relative rotational direction, whereby the drive shaft and first and second paddles, hubs and side-discs all rotate in the first rotational direction. Axially opposite ends of the internal-combustion-cycle chamber are respectively formed by the side discs and axial ends of the paddles are on the side discs at peripheries of the side discs for the paddles to project axially from the side discs.