Engine clutch control system for hybrid vehicle and method thereof

An engine clutch control system of a hybrid vehicle, comprising:

• a driving information detector detecting vehicle information and road environment information according to operation of the hybrid vehicle;
• an engine clutch disposed between an engine and a motor;
• and
• a hybrid controller providing an EV (electric vehicle) mode or an HEV (hybrid electric vehicle) mode by controlling engagement or disengagement of the engine clutch,
• wherein the hybrid controller sets a slip estimation region of the engine clutch from an accumulated value of an APS (Accelerator Pedal position Sensor), an engine clutch temperature, or a road inclination when engagement of the engine clutch is required, and
• the hybrid controller extracts a speed variation of the engine and the motor in the slip estimation region, compares the speed variation of the engine and the speed variation of the motor with each other, and
• wherein the hybrid controller is configured to engage the engine clutch using a clutch controller configured to control an amount of hydraulic pressure supplied to the engine clutch, and to determine that the engine clutch is engaged when a maximal peak is detected.