| 摘要 |
A piston engine which has at least one dry-running piston-cylinder unit. It has a first housing ( 1 ), at least one cylinder arranged in or on the first housing ( 1 ) in which a piston is reciprocably arranged. The piston-cylinder unit further has a first crankshaft ( 4 ) and a second crankshaft ( 5 ), the first and second crankshafts ( 4, 5 ) being arranged parallel to each other and synchronously rotating in opposite directions. The axes of rotation (X, X') of the crankshafts ( 4, 5 ) are arranged parallel to a center plane (Z) of the cylinder, and they are laterally offset relative thereto. First and second piston rods ( 6, 7 ) are pivotally connected to piston ( 3 ). The first piston rod ( 6 ) has a first end pivotally connected to piston ( 3 ) and a second end connected to a crank pin ( 40 ) of the first crankshaft ( 4 ). The second piston rod ( 7 ) has a first end that is pivotally connected to piston ( 3 ) and a second end that is pivotally connected to a crank pin ( 50 ) of the second crankshaft ( 5 ). The crankshafts ( 4, 5 ) are journalled in a second housing ( 8 ) which holds a lubricant. The crankshafts are arranged so that a respective first end of each crankshaft ( 4, 5 ) sealingly projects from second housing ( 8 ) to prevent the escape of lubricant into first housing ( 1 ). The respective piston rods ( 6, 7 ) are arranged in the first housing ( 1 ) outside second housing ( 8 ).
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