Hydraulically operated double clutch

Clutch arrangement, comprising an input clutch element (1) intended to be drivably connected to an output shaft from a drive unit, a first output clutch element (14) for driving a first input shaft to a transmission, a second output clutch element (16) for driving a second input shaft to the transmission, said second input shaft being arranged concentrically to the first input shaft, a first clutch disc package having clutch discs (10,12) joined alternatingly to the input clutch element and the first output clutch element, a second clutch disc package having clutch discs (11,15) alternatingly joined to the input clutch element and the second output clutch element, and first and second piston-cylinder devices, respectively, (18,17 and 25, 24, respectively), coordinated with the first and second disc package, respectively, said piston-cylinder devices, upon supply of pressure medium to the respective cylinder chambers, are arranged to compress associated disc packages and establish driving connection between the input clutch element and the respective output clutch element, characterized in that the cylinder chamber (17) of the first piston-cylinder device is delimited between its piston (18) and a first wall (4) of the input clutch element (1), that the cylinder chamber (24) of the second piston-cylinder device is delimited between its piston (25) and the piston (18) of the first piston-cylinder device, that a third cylinder chamber (30) is delimited between the piston (25) of the second piston-cylinder device and a second wall (6) of the input clutch element, and that channels (31-33) for supply of pressure medium to the cylinder chambers are arranged so that there is operating pressure simultaneously in the first and third cylinder chambers.