Temperature induction die fluid type fan katsupuringu device

摘要

A thermal response type fluid fan coupling device which is constituted by a sealed chamber which is divided into an oil accumulating chamber and a torque transmission chamber, and which accommodates a driving disc, by a separting plate having an oil flow adjusting hole, in which a dam is provided in a circulated passage connecting the torque transmission chamber and the oil accumulating chamber, and a valve member for opening and closing the flow adjusting hole in accordance with change in ambient temperature is provided so as to control torque transmission from the driving side to the follower side by changing the effective oil contact area in a gap for transmitting torque between the driving disc and the case and the cover, wherein an idle oil accumulating chamber which is connected to an oil introducing gap which is connected to the torque transmission chamber is provided at the position outer than the dam in the radial direction, and oil introducing means for connecing the oil accummulating chamber and the torque transmission chamber only when the device is stopped is provided.