42V 시스템을 적용한 Mild-HEV 개발

To meet the increasing market need for passenger comfort, safety and global environment protection, mild hybrid vehicles with 42V power system has been studied. This paper reviews the components of the vehicle, such as ISG, MCU, VCU, DC/DC converter, electric oil pump, belt drive system, etc. Also, vehicle control algorithm for ISG operation and supplementary devices control is presented. Fuel economy test of 42V mild-HEY is performed for CVS-75, MVEG-B and JAPAN 10ㆍ15 drive cycle and the results is analyzed.