| 摘要 |
PURPOSE:To prevent a friction part from seizing or binding, by altering the torque transmitted to either of front wheels or rear wheels continuously, while having a friction clutch, controlling a distribution ratio of driving force for both front and rear wheels, completely released or clamped when temperature in the friction part exceeds the specified value. CONSTITUTION:In this device bearing the above caption, either of a font-wheel propeller shaft 12a or a rear-wheel propeller shaft 13a is directly connected to an output shaft 11a of a transmission 11, while the other side of the said propeller shaft 12a or 13a is connected to the output shaft 11a of the transmission 11 via a friction clutch 14. Also it alters transmission torque of this friction clutch 14 and controls the driving force transmitted to the other side of the propeller shaft 12a or 13a. In the abovementioned, there is provided with a temperature detector 15 which detects temperature of a friction part in a friction disc of the friction clutch 14. And, when the temperature of the friction part exceeds the specified one, the friction clutch 14 is made to come into a state of being completely clamped or released to the full by a heating check device 16, thus overheating in the friction part is restrained before it happens, preventing the seizure or binding from occurring.
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