1
B Jerry Song, Vijay Ramappan, Darrell W Burleigh: Selective exhaust gas recirculation diagnostic systems and methods. GM Global Technology Operations, October 13, 2015: US09157390 (2 worldwide citation)

A system for a vehicle includes a first exhaust gas flow rate (EGF) estimation module, a second EGF estimation module, and an EGF fault detection module. The first EGF estimation module estimates a first flow rate of exhaust re-circulated back to an intake manifold based on a concentration of oxygen ...


2
SELECTIVE EXHAUST GAS RECIRCULATION DIAGNOSTIC SYSTEMS AND METHODS. GM Global Technology Operations, March 21, 2013: US20130073179-A1

A system for a vehicle includes a first exhaust gas flow rate (EGF) estimation module, a second EGF estimation module, and an EGF fault detection module. The first EGF estimation module estimates a first flow rate of exhaust re-circulated back to an intake manifold based on a concentration of oxygen ...