| 摘要 |
A transmission control has a redundancy control for upshift and downshift control of friction torque transmitting devices in a power transmission. The control solenoid valves providing for continued governor and accumulator trim boost in the event of a malfunction, in either the electrical system or the hydraulic system, which affects the governor pressure schedule. A reverse control signal, from a manual valve, is effective to remove the malfunctioning solenoid valve from effective operation in the control. |
