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由于发动机小型化倾向加剧及废气排放法规日益严格,在发动机和汽车的开发过程中,必须对噪声品质进行检验。基于这一原因,近几年,AVL公司致力于燃烧爆震指数及粗暴指数等参数的开发,运用这些参数,就能在整个开发过程中脱机检验噪声品质,而不是仅靠主观评定。
Due to the increasing miniaturization of engines and the increasingly stringent exhaust emission regulations, noise quality must be verified during engine and vehicle development. For this reason, in recent years, AVL has been devoted to the development of such parameters as the combustion detonation index and the crude index. Using these parameters, it is possible to test the noise quality off-line during the entire development process rather than relying solely on subjective assessment.