| 轻型柴油车实际道路瞬时排放模拟研究 |
| 摘要点击 5398 全文点击 2955 投稿时间：2007-10-30 修订日期：2008-01-14 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 CMEM模型 轻型柴油车 微观排放模拟 车载排放测试 |
| 英文关键词 CMEM model light-duty diesel vehicle micro-scale emission simulation on-board emission measurement |
| DOI |
|
| 中文摘要 |
| 系统介绍了CMEM模型及其计算原理.以轻型柴油车为研究对象，给出了模型的主要输入参数，并计算了车辆在实际道路上的瞬时排放结果，并根据实测数据对模拟结果进行了验证.测试车辆的CO、THC、NOx和CO2排放因子为0.81、 0.61、 2.09和193 g·km-1，相同线路模拟所得的排放因子分别为0.75、 0.47、 2.47和212 g·km-1，相关系数分别达到0.69、 0.69、 0.75和0.72.通过模拟发现，轻型柴油车在实际道路微观区域内的排放水平随交通条件和行驶状态波动明显，采用CMEM模型能够较好地反映该车排放随行驶工况的瞬时变化趋势.应用CMEM模拟发现，改善典型交叉口区域的交通条件后，轻型柴油车在模拟区域内的CO、THC、NOx和CO2排放量分别削减了50%、47%、45%和44%，排放改善效果显著.从研究结果来看，利用微观尺度模型来分析混合车流在一些典型交通区域的瞬时排放变化是必要的，也是可行的，对于评价道路交通规划的环境效果具有一定的指导意义. |
| 英文摘要 |
| Core architecture and input parameters of CMEM model were introduced to simulation the second by second vehicle emission rate on real world by taking a light-duty diesel car as a case. On-board test data by a portable emission measurement system were then used to validate the simulation results. Test emission factors of CO, THC, NOx and CO2 were respectively 0.81, 0.61, 2.09, and 193 g·km-1, while calculated emission factors were 0.75, 0.47, 2.47, and 212 g·km-1.The correlation coefficients reached 0.69, 0.69, 0.75, and 0.72. Simulated instantaneous emissions of the light duty diesel vehicle by CMEM model were strongly coherent with the transient driving cycle. By analysis, CO, THC, NOx, and CO2 emissions would be reduced by 50%, 47%, 45%, and 44% after improving the traffic situation at the intersection. The result indicated that it is necessary and feasible to simulate the instantaneous emissions of mixed vehicle fleet in some typical traffic areas by the micro-scale vehicle emission model. |
|
|
|
