在用柴油车排放治理改造方案设计及试验验证
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摘要
2018年国务院印发《打赢蓝天保卫战三年行动计划》,对柴油车NOx排放提出了严格的要求。对于国III或国IV在用柴油车,其道路NOx排放往往显著高于目前已实施的国V标准,排放改造工作迫在眉睫。基于SCR技术的在用柴油车排放治理改造方案可实现此工程需求,在柴油机后处理系统中安装节流元件和NOx传感器等,实时测量柴油机排放的NOx质量流量,再依据合理的SCR控制策略向排气管内喷射添蓝,以达到NOx减排目标,此外添蓝控制器中还包含远程监控模块,可对整车NOx排放进行在线监测。通过柴油车道路试验,并分析在线监控数据,验证该改造方案可使在用柴油车NOx排放满足国V标准。
In 2018, the State Council issued the "Three-Year Action Plan to Win the Blue Sky Defense War", which put forward strict requirements on NOx emissions for diesel vehicles. For national III or national IV diesel vehicles, the NOx emissions are often significantly higher than the currently national V standards, and the emission reduction work is imminent. The SCR technology-based diesel vehicle emission retrofit program can achieve this engineering requirement, install throttling components and NOx sensors in the diesel after-treatment system, measure the NOx mass flow of the diesel engine in real time, and then based on reasonable SCR control strategy Adblue is injected into the exhaust pipe to decrease NOx emission reduction. In addition, the Adblue controller also includes a remote module to monitor the NOx emissions of the vehicle all the time. By analyzing the monitoring data of the diesel vehicle at road test, the reconstruction strategy can make the NOx emission of the national III or IV diesel vehicle to meet the national V standard.
In 2018, the State Council issued the "Three-Year Action Plan to Win the Blue Sky Defense War", which put forward strict requirements on NOx emissions for diesel vehicles. For national III or national IV diesel vehicles, the NOx emissions are often significantly higher than the currently national V standards, and the emission reduction work is imminent. The SCR technology-based diesel vehicle emission retrofit program can achieve this engineering requirement, install throttling components and NOx sensors in the diesel after-treatment system, measure the NOx mass flow of the diesel engine in real time, and then based on reasonable SCR control strategy Adblue is injected into the exhaust pipe to decrease NOx emission reduction. In addition, the Adblue controller also includes a remote module to monitor the NOx emissions of the vehicle all the time. By analyzing the monitoring data of the diesel vehicle at road test, the reconstruction strategy can make the NOx emission of the national III or IV diesel vehicle to meet the national V standard.
引文
[1]胡杰,曾佳威,魏丽,等.基于NO_x传感器的Urea-SCR系统氨闭环控制策略[J].内燃机学报,2017, 35(4):354-361.
[2]王国仰,张俊,祁金柱,等.重型柴油车尿素SCR系统及其控制策略研究进展[J].内燃机工程,2018, 39(6):1-10.
[3] Inspection and maintenance(I/M)program effectiveness methodologies[S/OL]. U S EPA. EPA420-S-98-015. 2015.
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[6]王佳磊.在用柴油车后处理装置（DPF+SCR）的减排效率数值模拟及示范应用[D].西安:长安大学,2018.
[7]王军方,尹航,丁焰,等.在用柴油车NOx排放的测量方法[J].环境工程技术学报,2015, 5(5):407-410.
[8]林峰.在用柴油车排放控制后处理装置远程监测系统研究与开发[D].湖北:武汉理工大学,2017.
[9]成晓一. SY/T 6143-2004,用标准孔板流量计测量天然气流量[S]
[2]王国仰,张俊,祁金柱,等.重型柴油车尿素SCR系统及其控制策略研究进展[J].内燃机工程,2018, 39(6):1-10.
[3] Inspection and maintenance(I/M)program effectiveness methodologies[S/OL]. U S EPA. EPA420-S-98-015. 2015.
[4] Mobile 6 inspection/maintenance benefits methodology for1981 through 1993 model year light vehicles[S/OL]. U S EPA. EPA420-P-99-007. 2015.
[5] British columbia vehicle emissions inspection and maintenance program experience of alternative fuel vehicle conversions. STEWART S, GOURLEY D,LOO S. SAE Special Publications. 1994.
[6]王佳磊.在用柴油车后处理装置（DPF+SCR）的减排效率数值模拟及示范应用[D].西安:长安大学,2018.
[7]王军方,尹航,丁焰,等.在用柴油车NOx排放的测量方法[J].环境工程技术学报,2015, 5(5):407-410.
[8]林峰.在用柴油车排放控制后处理装置远程监测系统研究与开发[D].湖北:武汉理工大学,2017.
[9]成晓一. SY/T 6143-2004,用标准孔板流量计测量天然气流量[S]
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