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Imported CVT 적용 P/T NVH 개발 사례 연구
백승목(Seungmok Baek),길민철(Minchul Kil),이석환(Seokhwan Lee) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
All the automotive makers make efforts to meet the customer’s desire which is being varying very fast. But the limitation for development period and cost makes it very difficult that automotive makers cannot have enough time and chance to get perfect launch. Recently customer’s concerns about fuel-efficiency is growing, so a imported CVT is considered and applied to a new developed vehicle. CVT noise was issued during the process integrating the imported CVT with a new vehicle. To meet customer’s high demand for quiet vehicle, we uses many techniques to reduce CVT noise.. In this study, Imported CVT will be introduced about its major characteristics. Also experimental and CAE analysis method is introduced and can be proved to improve CVT noise
이남훈(Namhoon Lee),백승목(Seungmok Baek),박원식(Wonsik Park) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
GMDAT has developed new EU5 2.0 and 2.2 liter L4-cylinder turbocharged diesel engines that have improved power, lower exhaust gas emissions and better NVH performance compared to the previous EU4 engine. Nowadays customers want not only performance and fuel economy but also better NVH performance. To satisfy these consumer expectations, GMDAT set the NVH target as best in segment and to meet this target, engine hardware as well as combustion noise have been improved at each stage of engine development process. This paper will describe the NVH development process of the engine, including target setting process from benchmarking, NVH improvements of engine components and solutions for quality issues during development process.