OVERALL SYSTEM - Control Mechanism (Cont'd)
AT-7017prose procedureTable label 'Cluth switching' is a typo in the original document for 'Clutch switching'.
Control Mechanism (Cont'd)
TORQUE CONVERTER CLUTCH CONTROL
Fuel efficiency was improved by lowering the lockup speed. In order to soften the shock during the joining and releasing of lockup, the torque converter clutch solenoid valve and clutch switching solenoid valve are controlled and the optimal lockup hydraulic pressure is set.
Torque Converter Clutch Control Block Diagram
Rendering diagram…
Torque Converter Clutch Operation
Engagement
Clutch switching solenoid valveON
Torque converter clutch solenoid valve (level)Low
Torque converter clutch solenoid valve (duty)Duty=100%
Release
Clutch switching solenoid valveOFF
Torque converter clutch solenoid valve (level)High
Torque converter clutch solenoid valve (duty)Duty=0%