Abstract
Evaporative emissions from gasoline vehicles in Japan has been estimated using a real world model. This model consists of a model of permeations from fuel tank and fuel pipes, and breakthrough emissions from canister. Since user operation has an influence on breakthrough emissions, the investigation took place in three regions: metropolis, provincial cities, and rural areas. In areas with similar weather conditions, the daily maximum and minimum temperatures were adapted to the model. The estimated total amount of evaporative emissions was 34459 ton per year. Estimated results show that evaporative emissions in metropolis area is relatively high in Japan. Evaporative emissions from gasoline vehicles account for almost 4.7% of all the stationary sources in Japan; this is the fourth largest amount among all stationary sources.
