Mild hybrid vehicle and MHSG Torque limiting method of Mild hybrid vehicle

摘要

Disclosed is a method for limiting torque of a mild hybrid vehicle and a mild hybrid vehicle in which an engine output is assisted by a mild hybrid starter generator (MHSG) or a starting generator is driven by an engine output to charge a high voltage battery. In a method for limiting torque of a mild hybrid vehicle according to an aspect of the present invention, the actual amount of current supplied to the starting generator is measured in a motoring area (discharge area) assisted by a starting generator (MHSG, Mild Hybrid Motor Generator), and , The measured actual amount of current is compared with the allowable amount of current, and if the actual amount of current is greater than the allowable amount of current, the target torque of the starting generator determined through the torque map according to the driving area and driver's demand is adjusted downward by applying the first correction value. The summary is to calculate the limit target torque and control the torque of the starting generator according to the calculated limit target torque.