METHOD OF USING A PTO CLUTCH FOR AUXILIARY LOAD MEASUREMENT

摘要

A method is provided wherein when an auxiliary device is being powered by the PTO driveline (48) the PTO clutch (50) is periodically slowly ramped down in pressure until slippage is detected in the clutch (50). Slippage is determined by monitoring the shaft speed into the clutch (50) as well as the shaft speed downstream of the clutch. By determining the commanded pressure where slippage occurred, the equivalent engine power that is going to the auxiliary function is calculated. With this information, the proportion of the engine load signal that is going to the auxiliary function versus the drive wheels is determined. After slip is detected in the PTO clutch (50), pressure is ramped back up in the clutch (50) so as to minimize the amount of slippage.