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NTIS 바로가기한국정밀공학회지 = Journal of the Korean Society for Precision Engineering, v.34 no.6, 2017년, pp.397 - 403
조충일 (숭실대학교 일반대학원 융합소프트웨어학과) , 안형준 (숭실대학교 기계공학과)
Recently, technologies related to green cars are gaining attention. A variable valve-timing system (VVT) is widely used in internal-combustion engines to improve fuel efficiency and engine performance by controlling the valve open-close timing. Since conventional hydraulically controlled VVT has pro...
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