US 12,175,813 B2
Fault isolation using on-board diagnostic (OBD) capability data
Jeffrey Diwakar Abraham, Columbus, IN (US); Marcela Schmalz de Bernardi, Columbus, IN (US); Avra Brahma, Fishers, IN (US); Timothy J. Greis, Columbus, IN (US); Michael Haas, Columbus, IN (US); Gregory H. Henderson, Columbus, IN (US); Adam W. Kidd, Indianapolis, IN (US); Lyle E. Kocher, Whiteland, IN (US); Krithika Mohan, Columbus, IN (US); Daniel J. Smith, Columbus, IN (US); Christophe Tricaud, Columbus, IN (US); Ananth Vemuri, Columbus, IN (US); and Easwar Yarrabikki, Columbus, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Sep. 21, 2023, as Appl. No. 18/371,183.
Application 18/371,183 is a continuation of application No. 17/247,383, filed on Dec. 9, 2020, granted, now 11,798,325.
Prior Publication US 2024/0013594 A1, Jan. 11, 2024
Int. Cl. G07C 5/08 (2006.01); B60R 16/023 (2006.01); F02B 37/24 (2006.01); F02M 26/02 (2016.01); F02M 35/10 (2006.01); G07C 5/00 (2006.01)
CPC G07C 5/0808 (2013.01) [B60R 16/0234 (2013.01); F02B 37/24 (2013.01); F02M 26/02 (2016.02); F02M 35/10222 (2013.01); G07C 5/008 (2013.01); G07C 5/0816 (2013.01); G07C 5/085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable medium having computer-executable instructions encoded therein, the instructions, when executed by one or more processors, cause the one or more processors to perform operations comprising:
storing a fault isolation relationship data set of a plurality of diagnostic estimators and a plurality of failure modes, each of the plurality of failure modes represents a type of failure that can occur with (i) a sensor or (ii) a vehicle component of a vehicle system that is associated with the fault isolation relationship data set, each of the plurality of diagnostic estimators is associated with a respective subset of the plurality of failure modes, each respective subset defines a control space within the vehicle system that contains at least one of (i) one or more sensors or (ii) one or more vehicle components of the vehicle system, wherein each control space at least partially overlaps another control space to define a plurality of overlapped regions;
storing healthy diagnostic data regarding nominal operational parameters of the vehicle system when healthy;
acquiring diagnostic information regarding current operational parameters of the vehicle system;
generating error diagnostic data based on the diagnostic information;
generating a value for each of the plurality of failure modes based on the fault isolation relationship data set, the error diagnostic data, and the healthy diagnostic data; and
providing an alert to at least one of a display of a vehicle, a display of a service tool, or a server to facilitate identifying which of the plurality of failure modes are most likely to cause a fault within the vehicle system based on the value for each of the plurality of failure modes.