Estimation of Total Evaporative Emissions from Gasoline Vehicles in Japan


Modified real world model for estimating evaporative emissions from gasoline vehicles in Japan has been developed. Daily maximum and minimum temperatures at each prefecture were used to estimate the emissions. The authors have assumed evaporative emissions consist of permeations from fuel tank and piping and breakthrough emissions from canister. Estimated total amount of evaporative emissions was 31337 ton per year and it is 20 % lower than the past estimation. However, it is still higher emitter, emitting almost 5.5 percent of total amount from stationary sources in Japan. Estimated emissions from motorcycles with this model were almost 3000 ton and it will be reduced to 1000 ton by introducing 1 day Diurnal Breathing Loss (DBL) test for type approval tests.以前に開発したモデルに地域ごとの温度履歴,キャニスタ破過による蒸発ガス排出と燃料タンク,配管等からの浸透排出を明確に区別する等の改良を加えた改良型リアルワールドモデルを開発した.それによると日本国内での蒸発ガス排出は以前の結果より低い値であるが,高い寄与を続けていることが確認された


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  • Accession Number: 01666891
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jan 31 2018 3:16PM