| 摘要 |
PURPOSE:To get rid of nonconformity due to trouble in a sensor system, by installing such a device that judges the trouble in the sensor system for determinating the timing of an engine torque alteration, while suspending the engine torque alteration at the time of trouble happening, and changing the altering point of a shift map to be lowish. CONSTITUTION:Engagement of a frictional engaging device is selected by a hydraulic controller 60, while a shift step is selected according to the shift map preset to an ETC computer 50, and simultaneously engine torque is altered as far as the specified value by an engine computer 40. In this case, when a sensor system for determinating the timing of an engine torque alteration is judged as being out of order, the engine torque alteration is suspended by the computer 40, so that an altering point of the shift map of the computer 50 is changed to be rather lowish. With this constitution, such a possibility that a gear shifting characteristic is sharply deteriorated and/or durability in the frictional engaging device goes down will never happen even when the sensor system gets out of order. |
