论文部分内容阅读
应用机动车排放模拟器(MOVES)的微观层次对车辆的排放因子进行了数值模拟,采用便携式排放测试系统对试验车辆进行实际道路尾气排放测试,基于测试结果从排放因子角度对MOVES输出的模拟值进行验证。分析结果表明:在城市快速路上,大型货车CO_2、CO、NOx、HC、PM排放因子的模拟值与实测值的比值分别为1.40、0.72、1.01、1.05、1.05;在城市主干道上,大型货车CO、NOx、HC排放因子的模拟值与实测值的比值分别为0.70、1.07、1.07,而CO_2和PM排放因子的模拟值与实测值的比值分别为1.63和2.12;在城市高速路上,小型客车HC排放因子的模拟值与实测值的比值仅为0.34,而CO_2、CO、NOx排放因子的模拟值与实测值接近,其模拟值与实测值的比值分别为1.22、1.05、0.86;在城市主干道上,小型客车CO_2和NOx排放因子的模拟值与实测值接近,其模拟值与实测值的比值分别为1.20和1.10,而CO和HC排放因子的模拟值与实测值的比值分别为2.25和0.53。测试结果在一定程度上反映了MOVES预测车辆排放因子的准确性,表明使用MOVES模拟机动车排放因子时,需要对相应参数进行修正,才能更加真实地反映机动车排放水平。
The emission factors of vehicles were numerically simulated at the micro-level of MOVES. The portable exhaust emission test system was used to test the actual road exhaust emission of the test vehicles. Based on the test results, the simulated values of MOVES output authenticating. The results show that the ratio of simulated value of CO2, CO, NOx, HC, PM emission factor to the measured value is 1.40, 0.72, 1.01, 1.05 and 1.05 respectively on urban expressway; CO, NOx, HC emission factor of the simulated value and the measured value ratio were 0.70,1.07,1.07, respectively, and CO_2 and PM emission factor of the simulated value and the measured value ratio were 1.63 and 2.12; on the city highway, the small bus The ratio of simulated and measured values of HC emission factor was only 0.34, while the simulated values of CO 2, CO and NO x emission factors were close to the measured values. The ratios of simulated and measured values were 1.22, 1.05 and 0.86, respectively. On the road, the simulated values of CO 2 and NOx emission factors of minibuses are close to the measured values, the ratios of simulated values to measured values are 1.20 and 1.10, respectively, while the ratios of simulated and measured CO and HC emission factors are 2.25 and 0.53. The test results reflect to some extent the accuracy of MOVES forecast vehicle emission factors, indicating that the use of MOVES to simulate vehicle emission factors, the corresponding parameters need to be amended in order to more truly reflect the level of vehicle emissions.