Controlling the operation of an engine

摘要

A method for controlling operation of a turbocharged diesel engine 10 with exhaust gas recirculation in which deviations of NOx and particulate matter emissions from target output values are used to prioritise control of an exhaust gas recirculation valve 34 and a turbocharger inlet flow control device 44 so as to improve emission performance and reduce fuel use. According to another aspect of the invention virtual NOx and particulate matter sensors are formed by data stored in look up tables saved in a memory of an electronic controller 24.