公开(公告)号：US11288900B2

公开(公告)日：2022-03-29

申请号：US16561711

申请日：2019-09-05

Applicant: GM Global Technology Operations LLC

Inventor： Shengbing Jiang ,  Xinyu Du ,  Yilu Zhang ,  Varsha K Sadekar ,  Joshua J Sanchez ,  Paul E Krajewski

IPC: G07C5/08

Abstract: A method and system of diagnosing and suggesting least probable faults for an exhibited vehicle failure. The method includes initiating a vehicle health management (VHM) algorithm to monitor a state of health (SOH) for at least one vehicle component at each vehicle operating event over a predetermined time period. The VHM algorithm determines at least one of a Green SOH, a Yellow SOH, and a Red SOH designation with a confidence level for the at least one vehicle component; calculating a number of Green SOH designations (Ncalculated) over the predetermined time period; and upon an exhibited vehicle failure, providing a least probable cause indication for the at least one component when a set of conditions are met. The set of conditions includes (i) Ncalculated is equal to or greater than a predetermined number of Green SOH designations and (ii) no Yellow SOH and Red SOH designations are present.