Gm Global Technolgoy Operations, Inc.

Kouji Sakumoto

Richard B Jess

Chuan He

Yun Xiao

Jay Tolsma

GuoJun Shi

Jose L DeLeon

An exhaust gas recirculation control system comprises a pressure condition evaluation module and a protection module. The pressure condition evaluation module evaluates at least one of vane movement of a turbocharger and engine pressure. The protection module selectively controls an exhaust gas recirculation valve based on the at least one of the vane movement of the turbocharger and the engine pressure.

Exhaust gas recirculation control systems and methods

A temperature sensor rationality control system for an exhaust treatment system having an oxidation catalyst includes an oxidation catalyst inlet temperature sensor that generates an inlet temperature signal and an oxidation catalyst outlet temperature sensor that generates an outlet temperature signal. A control module determines whether a difference based on the inlet temperature signal and the outlet temperature signal is below a difference threshold when an exhaust temperature is within a threshold range.

Diesel oxidation catalyst (DOC) temperature sensor rationality diagnostic

Growing community of inventors

Ayase, Japan

Kouji Sakumoto