US 12,077,150 B2
System and method for MHSG failure diagnosis of mild hybrid vehicle
Bon Chang Koo, Seongnam-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Dec. 29, 2021, as Appl. No. 17/564,948.
Claims priority of application No. 10-2021-0104969 (KR), filed on Aug. 10, 2021.
Prior Publication US 2023/0051949 A1, Feb. 16, 2023
Int. Cl. F02N 11/08 (2006.01); B60W 20/50 (2016.01); F01N 9/00 (2006.01); G07C 5/08 (2006.01)
CPC B60W 20/50 (2013.01) [F01N 9/00 (2013.01); G07C 5/0808 (2013.01); G07C 5/085 (2013.01); B60W 2510/0638 (2013.01); B60W 2510/0657 (2013.01); B60W 2510/0676 (2013.01); B60W 2510/083 (2013.01); B60W 2510/1005 (2013.01); F01N 2900/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for mild hybrid starter and generator (MHSG) failure diagnosis of a mild hybrid vehicle, the system comprising:
a data detection part configured to detect data for determining whether to activate a catalyst; and
a controller configured to determine whether there is an MHSG failure using a deviation between a required torque and an actual operating torque of an MHSG for each engine RPM after determining whether catalyst activation is needed and whether to start a stage of the MHSG failure diagnosis based on the data detected by the data detection part.