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  • Summary & Details

エンジン特性最適化による車外騒音の低減

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Author(J)1) 山本 憲一, 2) 珠玖 達良
Affiliation(J)1) トヨタ自動車, 2) トヨタ自動車
Abstract(J)道路騒音改善のため,自動車の加速騒音の低減が求められている.商用車の場合,乗用車に比べて使用されるエンジン回転数が高いので,全体の騒音に対するエンジン騒音の占める割合が大きい.一方,最大積載量/登坂性能/燃費と言った商品性の面からエンジンに対する要求も厳しい.ここではシミュレーションにより加速騒音のレベルを予測し,車両重量の軽減や排気量の増加が動力性能等と両立しながら車外騒音の改善にも有効であることを定量的に示した.

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