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首页> 外文会议>Specialty Conference on Emission Inventory: Living in a Global Environment Vol.1 Dec 8-10, 1998, New Orleans, LA >Analysis of In-Use Motor Vehicle Toxic Emissions Using a New Emission Factor Model, MOBTOX5b
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Analysis of In-Use Motor Vehicle Toxic Emissions Using a New Emission Factor Model, MOBTOX5b

机译：使用新的排放因子模型MOBTOX5b分析在用机动车的有毒排放

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MOBTOX5b has been developed to estimate toxic emission factors for in-use highway vehicles. A preliminary version of the model based on MOBILE4.1 was developed for the 1993 EPA "Motor Vehicle-Related Air Toxics Study." MOBTOX5b represents a substantial improvement over that preliminary version. MOBTOX5b applies exhaust and evaporative toxic adjustment factors for various vehicle classes and technologies to MOBILE5b TOG emission factors. It allows the user to model benzene, formaldehyde, acetaldehyde, 1,3-butadiene, and MTBE emissions. These compounds are modeled because evidence of carcinogenicity in humans and/or animals exists. Besides the addition of input parameter records containing toxic adjustment factors, the model differs from MOBILE5b in allowing the user to specify a larger number of alternative basic emission rates, and the vehicle mileage level at which rates of deterioration begin to increase. The model also has the capability to account for differences in exhaust toxic fractions of TOG between normal and high emitting vehicles in calculating emission rates. Moreover, the model accounts for the impacts of aggressive driving and air conditioning usage on toxics. The impacts of fuel reformulation programs and changes in vehicle emission control technology can also be addressed with the model. This model was developed as part of an assessment of cancer risks from exposure to motor vehicle-related air toxics in nine urban areas. The assessment will be used to support decisions on the regulation of motor vehicle air toxics as required by the Clean Air Act. EPA plans to make this assessment tool available to stakeholders as well.
机译：已开发出MOBTOX5b来估算使用中的公路车辆的有毒排放因子。基于MOBILE4.1的模型的初步版本是为1993 EPA“与机动车相关的空气毒理学研究”开发的。 MOBTOX5b代表了对该原始版本的重大改进。 MOBTOX5b对MOBILE5b TOG排放因子应用了各种车型和技术的排气和蒸发毒性调整因子。它允许用户模拟苯，甲醛，乙醛，1，3-丁二烯和MTBE的排放。对这些化合物进行建模是因为存在人类和/或动物致癌性的证据。除了添加包含毒性调节因子的输入参数记录之外，该模型与MOBILE5b的不同之处还在于，它允许用户指定更多的替代基本排放速率，以及劣化率开始增加的车辆行驶里程水平。该模型还具有在计算排放率时考虑到普通和高排放车辆之间TOG的排气有毒成分差异的能力。此外，该模型说明了激进驾驶和空调使用对有毒物质的影响。该模型还可以解决燃料重新制定计划和车辆排放控制技术变化的影响。开发此模型是评估九个城市地区与机动车相关的空气中毒所致癌症风险的一部分。该评估将用于支持《清洁空气法》所要求的有关管制机动车空气中毒物的决定。 EPA计划也向利益相关者提供此评估工具。

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