ENGINE RESTART CONTROL SYSTEM FOR VEHICLE AND METHOD THEREOF

摘要

Disclosed is a control method for restarting the engine of a vehicle, wherein the control method minimizes the generation of impacts by actively controlling the idle stop and the restart of the engine while the vehicle is driven to decelerate and by improving a torque imbalance between the output of the engine and the input of a transmission when the engine is restarted. The control method for restarting the engine of the vehicle according to the present invention comprises a process of determining whether the deceleration of the vehicle is started; a process of determining the operational state of a brake when the deceleration of the vehicle has started; a process of controlling the shift gears of the transmission to be in neutral and controlling the engine to be in an idle stop state when the off operation of the brake is maintained in the deceleration of the vehicle; a process of determining whether the re-driving of the vehicle is detected in the deceleration of the vehicle while the off operation of the brake is maintained under the condition of the idle stop of the engine; and a process of synchronizing the RPM of the engine and the RPM of a turbine by driving the engine using a motor when the re-driving of the vehicle is detected, and then restarting the engine.