Patent ID: 8052569
Filing Date: 2011-11-08
Classification: B60K,B60W,F16H,Y02T,Y10T

Abstract:
1. A control system for a power transmission system, which has at least first and second transmission units having different responsiveness to a speed change and capable of setting a speed change ratio individually, and in which a total speed change ratio is determined according to the speed change ratios of the transmission units, wherein: the first transmission unit includes an electrical transmission unit in which a speed change ratio thereof is varied electrically, and the second transmission unit includes a mechanical transmission unit in which a speed change ratio thereof is changed by changing a torque transmitting point; and the control system comprising: speed change control means for changing a priority order to carry out a speed change operation of the individual transmission units to achieve a predetermined deceleration in conformity with a content of the deceleration demand, when the predetermined deceleration is demanded, and for carrying out a speed change of the first electrical transmission unit having a better responsiveness in priority to the second mechanical transmission unit in case an abrupt deceleration is demanded.