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최승목(Seungmok Choi),임혁(Hyuk Im),김석주(Suk-Ju Kim),바로키 베트랑(Betrand Varoquie) 한국자동차공학회 2020 한국자동차공학회 부문종합 학술대회 Vol.2020 No.7
State-of-art engines have introduced various technologies (VVA, EGR, MPI-GDI dual injection, etc.) to improve fuel economy and performance. Due to the interactions between technologies, optimized combustion control becomes more difficult, which causes drivability problems in vehicles. In-cylinder pressure sensor (ICPS) is the ultimate sensor to measure combustion directly; however, has not been accepted for mass production due to high cost and lacking durability. In this paper, the combustion control using the low-cost ICPS is demonstrated in a 4-cylinder engine. Ignition angle control of each cylinder based on both HR50 feed-back and knock detection is implemented in production-level ECU, and its fuel economy benefit is measured in engine dynamometer tests.