| 摘要 |
Past exhaust emission control systems have failed to clean the exhaust gas prior to mixing with the intake air. The present exhaust emission control system (60) removes at least a portion of the exhaust constituents from a flow of exhaust gas (20) prior to mixing with a flow of intake air (24). The present exhaust emission control system includes a control system (74) for monitoring an operating parameter of an engine (10). The control system (74) interprets the operating parameter within a controller (80) and the controller (80) causes an exhaust valve regulator (66) to move between an open position (70) and a closed position. Thus, the movement of the exhaust valve regulator (66) infinitely between the open position (70) and the closed position (72) defines the quantity of flow of exhaust gas (20) to be mixed with the flow of intake air (24) and controls the emission, especially of NOx, being emitted from the engine (10) depending on the operating parameters of the engine (10). |
