Patent ID: 8405497

Claim:
An alarm device for a wet clutch, whereby a counter clutch disc connected to an input shaft is connected to or disconnected from a clutch disc connected to an output shaft by charging or discharging hydraulic oil pressure into or out of the clutch, so that the input shaft is connected to or disconnected from the output shaft; wherein, the clutch comprises: a storage unit that stores data as to a relationship between a heat release generated in a clutch slip operation for a predetermined time and a repetition number with which the clutch is damaged, the relationship being established by measuring respective repetition numbers while changing the predetermined time in the clutch slip operation under an inching condition of the clutch; a slip heat release calculating means that calculates an actual heat release during an actual clutch slip operation, based on an actual hydraulic oil pressure during the actual clutch slip operation and an actual relative circumferential speed between the disc and the counter disc; an alarm device that raises an alarm based on the calculation result through the slip heat release calculating means and on the relationship between the heat release and the repetition number stored by the storage unit.