作　　者： ; ; ;

机构地区： 深圳职业技术学院汽车与交通学院

出　　处： 《环境工程学报》 2015年第4期1931-1936,共6页

摘　　要： 基于车载式排放测试系统(PEMS),对混合动力轿车进行典型城市道路行驶工况下的排放测试,对比分析实验车辆速度、加速度和比功率区间下的排放特性。混合动力轿车在车速低于50 km/h时,发动机处于关闭状态无排放,温度也下降,会降低NOx排放。主干道上NOx排放最少,快速路上NOx排放较高,高速公路上NOx排放最多。车速超过50km/h时发动机再起动,产生CO和HC排放峰值。主干道上CO和HC排放峰值最频繁,总平均排放因子最高;快速路上排放峰值稀少,总平均排放因子居中;高速公路上没有很大的排放峰值,总平均排放因子最低。 With portable emission measurement system,the hybrid electric car's emission experiments on typical city roads were carried out. Then,the emission characteristics regarding velocity,acceleration and VSP were analyzed. The experiments show when the vehicle speed is less than 50 km / h,the engine is shut down,the engine temperature goes down,and NOxemission drops. NOxemission is the highest on the expressway,in the middle on the freeway and the lowest on the main road. When the car accelerates to over 50 km / h,the CO and HC emission peaks appear. On the main road,there are repeated peaks and CO and HC emission factors are the highest. On the freeway,there are few peaks and the emission factors are in the middle. On the expressway no obvious peak appears and the values are the smallest.

关 键 词： 混合动力汽车 排放因子

领　　域： [环境科学与工程]