柴油乘用车燃用丁醇燃料道路工况气态物排放特性

Characteristics of the On-Road Gas Emission from a Diesel PCV with Butanol-Diesel Blends

摘要:

基于PEMS（Performance and Emission Monitoring System）车载排放测试方法，在一辆柴油乘用车上燃用纯国Ⅳ柴油、正丁醇与纯国Ⅳ柴油体积比10%和20%混合燃料，搭载了日本Horiba公司的OBS-2200的车载气态排放物测试系统，对车辆尾气进行直采。通过对比不同道路类型下三种燃料气态排放物的排放因子，参照不同工况排放因子变化，分析柴油乘用车燃用丁醇柴油的车载实际道路排放特性。试验结果表明：柴油乘用车燃用丁醇柴油可以明显降低CO排放，明显减小中高速工况下CO的峰值，THC排放会有所增加，随丁醇掺入比例增加而增多；CO2的排放基本不变；NOX的排放受到发动机参数及工况的影响变化不大。

Abstract:

Based on the PEMS on-board emission testing method, burning with the pure national Ⅳ diesel, 10% and 20% by volume butanol-diesel blends on a diesel PCV, the experiment equipped with an on-board gas emission testing system which made in Horiba of Japan. Comparing with the three different kinds of fuels’ emission in different kinds of roads type, referring to the different emission in different working conditions, the characteristic of the on-road gas emission from a diesel PCV with butanol-diesel blends have been analyzed. The result shows that, a diesel PCV burning with the butanol-diesel blends can reduce the CO emission obviously, especially on the medium-high-velocity working condition; the THC emission increases with the increasing of the butanol concentration; the CO2 emission basically unchanged,; the NOX emission changed a little because of the influence with the working condition and the engine parameters.