Hydraulic Control System: Description

Fig 1: Hydraulic Control System Flow Chart

Courtesy of KIA MOTORS AMERICA, INC.

Better and smoother shift quality.
In order to prevent ATF leakage from the valve body or each elements, the exhaust ports have been grouped into only one with an addition of a check ball.
If a failure occurs in its electric control, the switch valve and fail safe valve is able to move to enable 3rd speed drive or reverse.
The hydraulic system consists of oil pump, regulator valve, solenoid valves, pressure control valve and valve body.
In order to control the optimal line pressure and in-prove the efficiency of power transmission according to maximize the efficiency of the oil pump, VFS (Variable Force Solenoid) valve has been added in the valve body hydraulic circuit.

Fig 2: Exploded View Of Hydraulic Control System With Torque Specifications
Courtesy of KIA MOTORS AMERICA, INC.