Patent ID: 7798109

Claim:
An internal combustion engine ( 1 ) including a housing ( 3 ) with cylinders arranged in the housing ( 3 ), a crankshaft ( 5 ) and pistons ( 4 ) movably disposed in the cylinders and operatively connected to the crankshaft ( 5 ), a device ( 2 ) for varying a compression ratio of the cylinders of the internal combustion engine, the device ( 2 ) having for each cylinder with adjustable compression ratio the following elements: an adjusting arrangement with an adjusting shaft ( 11 ) supported in the housing ( 3 ), an eccentric ( 10 ) mounted on the adjusting shaft ( 11 ) for rotating the eccentric_( 10 ) for changing the position of the adjusting arrangement, a drive device including a clutch ( 15 ) for operative connection thereof to the crankshaft ( 5 ), a brake device ( 18 ) for locking the drive device with the housing ( 3 ) for firmly retaining the adjusting shaft ( 11 ) in a momentary position, a first housing-mounted stop ( 22 ) for limiting a rotation of the adjusting shaft ( 11 ) in a first end position and a second housing-mounted stop ( 23 ) for limiting the rotation of the adjusting shaft ( 11 ) in a second end position which is opposite the first end position.