| 摘要 |
<p>The control system is used to change the gear ratio in a gear set regulated by a change-gear signal from a control unit. A transducer provides an output torque signal which is compared to other signals for initiating the gear change. Alternatively, an automatic transmission changes a gear ratio when engine torque is transferred from one member to another member of a three member planetary gear set. The transfer is accomplished through friction elements engaged by hydraulic pressure. A closed loop electrical circuits is completed between a transducer, which provides an electrical signal related to the output torque of the transmission, and a control valve, to vary the control valve pressure. A circuit for computing reaction torque is coupled between the transducer and a logic control circuit.</p> |
