| Title: | Estimation model for evaporative emissions from gasoline vehicles based on thermodynamics |
| Author(s): | Hata H; Yamada H; Kokuryo K; Okada M; Funakubo C; Tonokura K; |
| Address: | "Tokyo Metropolitan Research Institute for Environmental Protection, 1-7-5 Sinsuna, Koto-ku, Tokyo 136-0075, Japan; Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Chiba 277-8563, Japan. Electronic address: hata-h@tokyokankyo.jp. Department of Mechanical Engineering, Tokyo Denki University, 5 Senjyu-Asahimachi, Adachi-ku, Tokyo 120-8551, Japan. Modern Planning Inc. 5-49-10 Chuo, Nakano-ku, Tokyo 164-0011, Japan. Tokyo Metropolitan Research Institute for Environmental Protection, 1-7-5 Sinsuna, Koto-ku, Tokyo 136-0075, Japan. Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Chiba 277-8563, Japan" |
| DOI: | 10.1016/j.scitotenv.2017.10.030 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "In this study, we conducted seven-day diurnal breathing loss (DBL) tests on gasoline vehicles. We propose a model based on the theory of thermodynamics that can represent the experimental results of the current and previous studies. The experiments were performed using 14 physical parameters to determine the dependence of total emissions on temperature, fuel tank fill, and fuel vapor pressure. In most cases, total emissions after an apparent breakthrough were proportional to the difference between minimum and maximum environmental temperatures during the day, fuel tank empty space, and fuel vapor pressure. Volatile organic compounds (VOCs) were measured using a Gas Chromatography Mass Spectrometer and Flame Ionization Detector (GC-MS/FID) to determine the Ozone Formation Potential (OFP) of after-breakthrough gas emitted to the atmosphere. Using the experimental results, we constructed a thermodynamic model for estimating the amount of evaporative emissions after a fully saturated canister breakthrough occurred, and a comparison between the thermodynamic model and previous models was made. Finally, the total annual evaporative emissions and OFP in Japan were determined and compared by each model" |
| Keywords: | Breakthrough equation Evaporative emissions Gasoline passenger car Ozone formation potential Reid vapor pressure VOC analysis; |
| Notes: | "PubMed-not-MEDLINEHata, Hiroo Yamada, Hiroyuki Kokuryo, Kazuo Okada, Megumi Funakubo, Chikage Tonokura, Kenichi eng Netherlands 2017/10/27 Sci Total Environ. 2018 Mar 15; 618:1685-1691. doi: 10.1016/j.scitotenv.2017.10.030. Epub 2017 Oct 23" |
