Diesel Engine SCR Systems: Modeling, Measurements, and Control

摘要: Diesel engine urea-SCR system control has been a great challenge ever since the start of SCR mobile vehicle applications. Open-loop urea dosing is difficult to meet tailpipe NOx and ammonia emission requirements primarily due complex dynamics in transient operations. Closed-loop thus more preferable order achieve high operational conversion efficiency low slip. However, highly nonlinear dynamics, limited measurements, operating conditions make closed-loop on-vehicle systems challenging. Many studies on control-oriented modeling, measurement systems, controller designs have proposed recent years. While several major related issues addressed some extents, many real-time challenges remain open. The objective this chapter summarize review possible solutions aspects for main intent provide an introduction current developments.