FLUID TRANSMISSION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a fluid transmission device which facilitates the change of a vibration characteristic and realizes excellent vibration damping capacity in a low rotation region.

SOLUTION: The fluid transmission device which includes a pump impeller coupled to a drive shaft and a turbine runner coupled to a driven shaft, circulates fluid through a circulation path formed between the pump impeller and turbine runner and transmits rotary power from the pump impeller to the turbine runner through the fluid, includes a lock-up clutch for coupling the turbine runner to the drive shaft and a damper mechanism interposed between the turbine runner and lock-up clutch. The damper mechanism includes an inertia mass body relatively rotatable with respect to the lock-up clutch and turbine runner, a first elastic body for connecting the inertia mass body to the lock-up clutch and a second elastic body for connecting the inertia mass body to the turbine runner. The inertia mass of the inertia mass body is 0.7 times or more of that of the turbine runner.

COPYRIGHT: (C)2009,JPO&INPIT