Smooth Torque Converter Clutch
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- Torque converter clutch solenoid output pressure (10) is gradually pressurized and is applied to the left end of the valve. Thus, the valve move gradually to the right and drain port (X) opens.
- When drain port (X) begins to open, torque converter pressure (48) that was applied to the torque converter clutch release passage of the torque converter will gradually depressurize. Because of the balance between torque converter clutch solenoid output pressure (10) that was applied to the left of the valve, and spring force that was applied to the right of the valve, torque converter pressure (48) that was applied to the torque converter clutch release passage of the torque converter is controlled.
- The torque converter that is applied to torque converter clutch release passage (48) is depressurized as torque converter clutch solenoid output pressure (10) becomes higher. Thus, smooth torque converter clutch takes place by gradual pressurization of torque converter clutch solenoid output pressure (10).