Patent ID: 7445579
Filing Date: 2008-11-04
Classification: B60H,B60W,B60Y,F16H,Y10T

Abstract:
1. A system for compensating a performance of heating of a motor vehicle with a continuously variable transmission (CVT), the heating being carried out using heat generated by an engine, the system comprising: a coolant-temperature sensor which senses an engine-coolant temperature; and a transmission electronic control unit (ECU) electronically linked to the CVT and the coolant-temperature sensor, the transmission ECU being so programmed as to: determine whether or not a compensation of the performance of heating is required in accordance with at least the engine-coolant temperature; obtain, if it is determined that the compensation of the performance of heating is required, a target input rotation of the CVT in such a way as to avoid an input rotation of the CVT from being below a lower limit value which is determined to restrain degradation of a drivability and a shift quality while compensating the performance of heating in accordance with a vehicle speed, and which is larger than a lower limit value when the compensation of the performance of heating is not required; and shift-control the CVT in accordance with the target input rotation.