The present disclosure relates to a steam engine comprising a cylinder (10), a reciprocating piston (12) which is movably guided in the cylinder (10) between an upper dead center and a lower dead center, a working chamber (18) in the cylinder (10), said working chamber being limited by the reciprocating piston (12), a steam chamber (76) for providing live steam, an intake valve (26) with a valve opening (28) which connects the steam chamber (76) and the working chamber (18), a valve seat (30) which surrounds the valve opening (28), a movable valve element (32) which interacts with the valve seat (30) in order to close and release the valve opening (28), and a valve controller (42) for moving the valve element (32), wherein the valve controller (42) has a control cylinder (44) and a control piston (46) which interacts with the valve element (32) and divides the control cylinder (44) into a pneumatic chamber (48) and a hydraulic chamber (50), wherein the hydraulic chamber (50) can be supplied with hydraulic fluid in order to lift the valve element (32) from the valve seat (30) and release the valve opening (28).

The present disclosure relates to a steam engine comprising a cylinder (10), a reciprocating piston (12) which is movably guided in the cylinder (10) between an upper dead center and a lower dead center, a working chamber (18) in the cylinder (10), said working chamber being limited by the reciprocating piston (12), a steam chamber (76) for providing live steam, an intake valve (26) with a valve opening (28) which connects the steam chamber (76) and the working chamber (18), a valve seat (30) which surrounds the valve opening (28), a movable valve element (32) which interacts with the valve seat (30) in order to close and release the valve opening (28), and a valve controller (42) for moving the valve element (32), wherein the valve controller (42) has a control cylinder (44) and a control piston (46) which interacts with the valve element (32) and divides the control cylinder (44) into a pneumatic chamber (48) and a hydraulic chamber (50), wherein the hydraulic chamber (50) can be supplied with hydraulic fluid in order to lift the valve element (32) from the valve seat (30) and release the valve opening (28).