Effect of the NOx control on the combustion noise control in an internal combustion engine

摘要

The system has an air flap actuator (6) i.e. exhaust gas recirculation (EGR) valve, controlling a rate of nitrogen oxide emitted by an internal combustion engine (2). Another actuator (7) i.e. fuel injector, controls combustion noise of the engine. A regulation unit (30) controls the former actuator to regulate the rate of nitrogen oxide emitted by the engine in a closed loop. Another regulation unit (31) controls the latter actuator for regulating the combustion noise of the engine in the closed loop. An independent claim is also included for a method for controlling combustion in an internal combustion engine of a motor vehicle.