Verfahren zur Kalibrierung von Kupplungen in einem Getriebe
摘要
Clutches in multi-speed transmission have been initially calibrated in an attempt to determine the point at which the clutch is filled and thus reduce the harshness of engagement of the elements within the clutches during future gear ratio changes in the transmission when being worked under normal conditions. In these earlier attempts at calibrating the clutches, the desired pressure level needed to fill the clutch was either empirically derived or calibrated by incrementally increasing or stepping the pressure level from a minimum value to the required value. In the subject invention, the clutches are calibrated by using a method of calibration that is substantially the same method that is used during normal operating conditions. By using substantially the same method, any effects of "hysteresis" of the associated valving is basically eliminated.
申请公布号
DE19739215(A1)
申请公布日期
1998.03.12
申请号
DE1997139215
申请日期
1997.09.08
申请人
CATERPILLAR INC., PEORIA, ILL., US
发明人
MCKENZIE, PHILIP C., PEORIA, ILL., US;KAJJAM, ASHOK K., PEORIA, ILL., US