Dual-mass flywheel concept for internal combustion engines, where the secondary flywheel can be disconnected and reconnected as required, by means of a clutch. The concept is characterized in that it comprises a primary flywheel fixedly mounted on the engine crankshaft, a secondary flywheel which is stored so that it can rotate freely, a clutch connecting the secondary flywheel to the drive shaft (input shaft on the gearbox), an elastic element (springs) which connects the primary flywheel to the drive shaft.