Tandem 시스템의 NOx 저감 효과에 관한 연구
A Study on the Effects of NOx Reduction for the Tandem System
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Abstract
The effects of a WI(Water Injection) at the intake pipe and an urea injection at the exhaust pipe for a 4-cylinder DI(Direct Injection) diesel engine were investigated experimentally. The water quantity was controlled by temperature of intake manifold and MAF(Manifold Air Flow). In addition, the urea quantity was controlled by NOx quantity and MAF. Effects of WI system, urea-SCR system and tandem system were investigated for with and without EGR(Exhaust Gas Recirculation). As the results, the SUF(Stoichiometric Urea Flow) and NOx map were obtained. In addition, NOx results can be visualized with engine speed and engine load. It was concluded, therefore, that the NOx reduction effects of the tandem system without the EGR were more than those with the EGR base engine.
참고문헌 (10)
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