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Non-Road Engine Population Estimates
| 题名： | Non-Road Engine Population Estimates |
| 作者： | empty |
| 关键词： | Non-road emission##Engine populations##Emissions regulations##Geographic analysis##Temporal analysis##Non-road engine usage##Office of Transportation and Air Quality (OTAQ)## |
| 摘要： | The default base year application populations are used as a starting point to estimate future and past year engine populations in the NONROAD emissions model. The base year is either 1996, 1998, 1999, or 2000, depending on the application. The base years are the most recent years for which population data are available. The NONROAD model tracks engines rather than equipment because present and planned non-road emissions regulations focus on engines instead of equipment. EPA anticipates that future non-road emission regulations would also focus on engines. The engine populations were divided into many applications because of the variety of ways non-road engines are used. This variety of applications allows for application-specific geographic and temporal allocations, activity, emission rates, and other input factors to characterize non-road engine usage and emissions. |
| 总页数： | 49 |
| 报告类型： | 科技报告 |
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