Method for detecting steady-state and transient air flow conditions for cam-phased engines

摘要

A particulate filter regeneration method for an internal combustion engine system is provided. The method includes: receiving an outlet temperature signal corresponding to a temperature at an outlet of a particulate filter; receiving an oxygen signal corresponding to an oxygen level in exhaust flowing from said particulate filter; and controlling at least one of airflow and fuel based on said oxygen level such that said outlet temperature is within a desired range.