Patent ID: 9151203
Filing Date: 2015-10-06
Classification: F01N,Y02T

Abstract:
1. An apparatus for adjusting an oxygen sensor measurement within an exhaust gas feedstream output from an internal combustion engine, comprising: the oxygen sensor disposed within the exhaust gas feedstream output from the internal combustion engine and configured to provide a measurement that includes a difference between the oxygen content in the exhaust gas feedstream and an ideal oxygen content of ambient air; a mass airflow sensor disposed upstream of the internal combustion engine and configured to obtain temperature and pressure of an intake mass airflow entering the internal combustion engine, a humidity sensor located proximate to the mass airflow sensor and configured to obtain relative humidity of ambient air; an exhaust gas sensor disposed within the exhaust gas feedstream output from the internal combustion engine and configured to obtain temperature and pressure of the exhaust gas feedstream; and a control module