ENGINE EMISSIONS CONTROL SYSTEM

摘要

An engine emissions control system includes an electronic control module (44) and a nitrogen oxide sensor (42) in communication with the electronic control module. The nitrogen oxide sensor is mounted on an exhaust system (32) of an engine (12) and is configured to provide the electronic control module with feedback indicative of an actual level of nitrogen oxide in an exhaust stream flowing through the exhaust system. The engine emissions control system also include an engine parameter adjustment assembly (28, 36, 50) controlled by the electronic control module. The electronic control module automatically actuate the engine parameter adjustment assembly to adjust an engine flow until the actual level of nitrogen oxide reaches a desired level of nitrogen oxide.