| 摘要 |
A system for controlling a downshift in an automatic transmission having a torque converter includes friction elements for alternately producing a drive connection between components of a planetary gear set and disengaging the connection, a valve body adapted to connect a source of high pressure hydraulic fluid to the friction elements, a solenoid for controlling operation of the hydraulic valves, a microprocessor having a memory containing control algorithms, sensors producing signals representing the speed of the transmission output shaft and turbine shaft, a sensor producing a signal representing the position of an engine throttle, the control algorithms controlling a downshift of the transmission.
|
