Fluid System for Oscillating-Piston Engines

An oscillating-piston engine (100) comprising at least two double-armed oscillating pistons (4) arranged in a spherical housing (19) and a revolving oscillation shaft (25) rotatable about an axis (23) of revolution arranged in the housing centre, wherein the oscillating pistons (4) are attached to the revolving oscillation shaft (25) rotatable about an oscillating axis (24) perpendicular to the axis (23) of revolution such that the oscillating pistons during a rotation of the revolving oscillation shaft (25) about the axis (23) of revolution revolve together about the axis (23) of revolution, and when revolving, mutually perform reciprocating oscillating movements in opposite directions about the oscillating axis (24), wherein guide members (5) attached to at least two pistons engage in at least one guide groove (17) formed in the housing (19) and serving to control the oscillating movements, the oscillating-piston engine comprising a fluid system (60, 70) for supply with a fluid, wherein each of the pistons have at least one channel (30) floodable with a fluid,

• characterized in
• that the feed (1) of the fluid supplied from a tank (11, 15) is carried out through the housing (19) on at least one end (27) of the revolving oscillation shaft (25), and via bores (26) in this revolving oscillation shaft at least one cavity (28) in or at the respective piston (4) and/or at least one bore (30) in the respective piston (4) is floodable, wherein from the respective cavity (28) and/or the respective bore (30) a discharge of the fluid towards the piston surface (3) facing the inner side (2) of the housing takes place, so that by means of the centrifugal force generated by a rotation of the revolving oscillating shaft (25), a suction at the feed conduit (1) as well as a pressure in the discharge conduits is caused near the piston surface (3) and hence an automatic fluid circulation via discharge openings (16) to the tank (11, 15) is activated.