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“Real World Evaporative Testing of Late-Model In-Use Vehicles”
| 题名： | “Real World Evaporative Testing of Late-Model In-Use Vehicles” |
| 作者： | Deiulis McClcmcnt, Brian Hall, and Michael Strunck |
| 关键词： | Evaporative Emissions Running Losses NOx Diurnal Emissions Hot Soak Emissions I/M 240 Carbureted Vehicles Hydrocarbons Light-Duty Vehicles SHED VT-SHED |
| 摘要： | The study was conducted by ATL, where they randomly procured 50 vehicles from a mandatory Inspection/Maintenance (I/M) lane. They stratified the sample by model year and vehicle type, and divided it into four model year groupings: 1992, 1993, 1994, and 1995 and newer. The final sample included a representative proportion of light-duty trucks. The vehicle testing protocol included hot soak, diurnal, and running loss evaporative emission tests. Each vehicle’s exhaust system was carefully checked for leaks prior to the running loss test. An additional five vehicles were selected to receive a replicate on the entire base hot soak/diurnal/running loss test series. Three of these vehicles were relatively low emitters, and one was a mid range emitter, and one was relatively high emitter. Ten other vehicles received an extended 3 day, 72 hour diurnal test. |
| 报告类型： | 科技报告 |
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