SCR控制原型开发及台架标定研究  

Research of the SCR Control Prototyping and Bench Calibration

作　　者：刘兴华[1] 梁虹[1] 仇滔[2] 李加强[1] 岳广照[3] 赵锐娜[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京工业大学环境与能源工程学院,北京100124 [3]北京大学工学院包头研究院,包头014030

出　　处：《内燃机工程》2015年第4期31-35,共5页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金项目(50976014)

摘　　要：针对柴油机尿素催化还原后处理(selective catalytic reduction,SCR)技术的控制策略验证,基于快速控制原型系统建立了V型模式开发平台。此平台将MATLAB/Simulink搭建的控制模型与发动机台架试验的尿素控制系统无缝连接起来,实现了在发动机台架上实时修改控制策略的目的。基于此控制开发平台提出了台架标定方法,即采用加权分配NOx排放限值并加以适当调整的台架标定方法。经过试验验证,采用上述方法标定的柴油机,柴油机NOx在欧洲稳态测试循环(European steady state cycle,ESC)下的比排放为3.3g/(kW·h),满足国-Ⅳ柴油机排放限值的要求。For the validation of the control strategy for urea selective catalytic reduction（SCR）system,a V type development platform based on the rapid prototyping system was built.The platform could seamlessly combine the model built by MATLAB/Simulink with the urea control system of an engine test bench to enable the modification of a control strategy on an engine test bench.A bench calibration was developed based on this platform.The method adopts weighted distribution of NOxemission limits in combination of appropriate adjustment.With it a diesel engine with SCR after-treatment is calibrated and the experimental results show that the NOxemission of the engine under the ESC cycle is 3.3g/（kW·h）,which meets the ChinaⅣemissions standard.

关 键 词：内燃机 柴油机 选择性催化还原 尿素喷射 快速控制原型 台架标定 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]