FLUID MEDIUM SYSTEM FOR ENGINES WITH ROCKING PISTONS Russian patent published in 2013 - IPC F02B55/04 F02B55/10 F01C9/00 F01C21/04 F01C21/06 

FIELD: engines and pumps.

SUBSTANCE: engine (100) includes at least two rocking pistons (4) located in housing (19), and oscillating-rotary shaft (25). Shaft (25) is installed so that it can be rotated about rotation axis (23). Pistons (4) are fixed on shaft (25) with possibility of being rocked about perpendicular rotation axis (23) of oscillation axis. Each piston (4) has at least one channel filled with fluid medium. The channel includes at least one cavity made in the piston or on the piston and/or at least one opening (30). Shaft (25) has openings (26) along rotation axis (23) and along axis of oscillation. Fluid medium system includes reservoir (15) and the line connected to reservoir (15) for fluid medium inlet from reservoir (15) to inlet opening (1) in housing (19) wall. Opening (1) is open at least to one end (27) of shaft (25). At least one cavity of the piston and/or opening (30) has the possibility of being filled through openings (26) made in shaft (25). Fluid medium is drained from the cavity of the piston and/or at least one opening (30) in the direction of surfaces (3) of pistons, which face inner side (2) of housing (19). Centrifugal force appearing during shaft (25) rotation causes the in-leakage at inlet opening (1) and pressure in drains at the piston surface (3), and thus, automatic fluid medium circulation through drain openings (16) to reservoir (15).

EFFECT: simpler design, lower friction and fluid medium flow rate.

24 cl, 4 dwg