Hyundai Motor Company

Kia Motors Corporation

Ki-Hong Kang

Hyun Kyung Kim

Kwang-Seok Choi

Do-Sung Hwang

Jeong-Hye Choi

An apparatus for controlling a start sequence of an engine for a vehicle may include an engine, a motor configured to start the engine, a main switch configured to connect power to the motor or interrupt the power to be supplied to the motor, a main battery configured to supply the power to the motor through the main switch, a converter configured to step up a voltage of the motor by boosting reverse power through a reverse control operation, an auxiliary battery configured to supply the reverse power, and a converter controller configured to perform a pre-charging operation for a predetermined time through the reverse control operation when an ignition-ON signal is inputted, and close the main switch when the pre-charging operation is completed.

Apparatus and method for controlling start sequence of engine for vehicle

An apparatus and method for controlling cold starting of a mild hybrid vehicle, are disclosed. The method includes: measuring, by a sensor, a cooling water temperature of the vehicle when a request is received to start an engine; operating, by a controller, a starter to drive an engine when the cooling water temperature is less than a preset reference temperature, and stopping the operation of the starter and operating an MHSG to drive the engine when RPM of the engine driven by the starter exceeds a preset reference value. In particular, stepwise starting according to the cold starting of the vehicle is performed. The apparatus and the method are advantageous in that a starter and alternator are simultaneously controlled under a cold starting condition to provide startability and reduce capacity of a starter, reducing manufacturing costs.

Growing community of inventors

Gwangmyeong-si, South Korea

Ki-Hong Kang