| 摘要 |
PURPOSE:To prevent a trouble from interfering with all the controls, even when a car speed sensor is in trouble, by providing an estimating means which respectively estimates an engine speed from a turbine speed, engine speed from an output shaft speed and the turbine speed from the output shaft speed and an estimating means which performs estimation in a reverse way to the above. CONSTITUTION:In the case of an engine speed sensor 23 in trouble, an engine speed is estimated by the first or second engine speed estimating means from a turbine speed or an output shaft speed. In the case of a turbine speed sensor 24 in trouble, the turbine speed is estimated by the first or second turbine speed estimating means from the engine speed or the output shaft speed. And in the case of an output shaft speed sensor 25 in trouble, the output shaft speed is estimated by the first or second output shaft speed estimating means from the engine speed or the turbine speed. While in the case of all the sensors 23, 24, 25 in trouble, all the speeds are set to a maximum value. |
