Dual-mass flywheel used for powertrain of motor car has secondary flywheel mass in which mass with flange is arranged at cast portion radially within axial installation space of spring

摘要

The dual-mass flywheel (1) has primary flywheel mass (3) manufactured from sheet metal, and secondary flywheel mass (4) manufactured from casting. The primary flywheel mass has disc (7) connectable with a crankshaft of a combustion engine and the cover (8). The secondary flywheel mass has flange (11) and mass (12) formed from cast portion (9). A spring (6) acting upon flange is formed on secondary flywheel mass. The mass with flange is arranged at the cast portion radially within axial installation space of the spring.