公开(公告)号：US20200377072A1

公开(公告)日：2020-12-03

申请号：US16423603

申请日：2019-05-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Kee Y. Kim ,  Anthony H. Heap ,  Michael A. Miller ,  Birendra P. Bhattarai ,  Joshua F. Pacheco

IPC: B60W20/00 ,  B60W30/18

Abstract: A powertrain system is described and includes an internal combustion engine that is coupled to an electric machine that is electrically connected to a DC power source, and a controller. The controller is operatively connected to the internal combustion engine and the electric machine, and is in communication with the vehicle and the DC power source. Control includes dynamically monitoring vehicle speed and a state of charge (SOC) of the DC power source, and transitioning to operating the electric machine in an alternator emulating mode when the SOC is less than a first SOC threshold. The first SOC threshold is determined based upon the vehicle speed. The DC power source is electrically connected to an on-vehicle auxiliary power system, which includes operating the electric machine in an electric power generating state to generate sufficient electric power to service the auxiliary power system.