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      • [연료 및 윤활유부문] New Aspects of Engine NVH Analysis

        Martin Pfluger,Alfred Rust,Yunseok Ohu 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

        Noise, Vibration and Harshness (NVH) has become a key issue in automotive product development. The NVH challenges come from two major driving factors, legis1ation and market demands. In both fields the requirements will drastically increase due to tighter legislative noise limits and higher standards of comfort New test procedures will have to be developed in order to get better images of noise emissions and sound quality. This trend is world\\1de valid with different standards of engineering. The paper outlines and discusses the future boundary conditions for diesel engine acoustics and, as a consequence of these constraints, the necessary) technological development stages. The future demands necessitate a more holistic approach of engine development. The acoustic tasks will have to be in a tighter accordance with other engine requirements like exhaust emissions, fuel consumption, engine performance, engine weight, etc. These requirements will lead to new NVH analysis and development tools. One of such future NVH tools, the 'Pass-By Noise Prediction' system is presented and discussed in more detail

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