Flywheel assembly for vehicle, and engine and vehicle with flywheel assembly

The invention discloses a flywheel assembly for a vehicle, an engine with the flywheel assembly and a vehicle with the flywheel assembly. The flywheel assembly for the vehicle comprises a primary flywheel, a secondary flywheel and a switching device, wherein the primary flywheel is suitable to be fixed on an engine crankshaft of the vehicle; the secondary flywheel and the primary flywheel are connected through an elastic element to be suitable for being connected with a gear box of the vehicle through a clutch; the switching device is set in a manner that the primary flywheel and the secondary flywheel can be selectively synchronized so as to enable the primary flywheel and the secondary flywheel to synchronously rotate. According to the flywheel assembly for the vehicle, which is provided by the embodiment of the invention, when the engine is started, the primary flywheel and the secondary flywheel are synchronized through the switching device, so that the resonance of the primary flywheel and the secondary flywheel can be avoided.