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◆Preface◆Special Feature 1：“Tough Gear”and “High Quality”for New X-TRAIL◆Special Feature 2：Test Technologies Contributing to Electrification　Preface：Technologies and processes for establishing products from advanced technologies …………………………………………1　1. Evolution of genuine SUVs: New X-TRAIL e-4ORCE …………………………………………………………………………………………5　2. “VC TURBO”and“e-POWER”System ………………………………………………………………………………………………………11 　3. Engine Evolution of e-POWER ……………………………………………………………………………………………………………………17　4. Application of e-4ORCE to Full-Scale SUVs …………………………………………………………………………………………………21　5. NV Technology to Achieve EV-Level Quietness ………………………………………………………………………………………………25　1. Test technologies that support the competitiveness of electric vehicles ………………………………………………………………33 　2. Driving Simulator Test Technologies for Establishing Unique Performances of Electric Vehicles …………………………………39　3. Virtual Reality Test Technologies for Evaluating Quality of New Mechanical Parts Without Prototyping ………………………45　4. Virtual–Real, Simulator–Test Technology for Optimizing Electric Powertrain Performance Without Using an Actual Vehicle …51　5. Test Technology for Thermal Management System Achieving Both Low Electricity Cost and High Comfort …………………57　6. X-ray CT Nondestructive Measurement Technology Supporting Vehicle Body Weight Reduction Technology ………………61Mitsuro AntokuTetsuya YamamotoNaohiro Yoshida Jun Hasegawa Masaki TakaokaKazuhiro Ogino Yorihisa Tsuchiya Hideaki Mizuno Yuuki Sakai Yasuhide AbeTakeji Katakura Ryota SuzukiMengze Li Shinichi Suganuma Toshihisa Kuwata Nobunari Funatsu Hiroaki Fukuoka Takefumi Mitani Kazushige Maeda Yasutsune Terashima Yuichi Igarashi Kazuhisa OkadaKohichiro TanakaHiromi Fujita Youichi Isono Masayuki Imamura Naoya Machida Yutaka HayashiOsamu Maruse Yasunori Nakazono Noriharu Kubo Erina UenoHidenobu Nakamoto Koji Hiraya Hiroyuki TaniaiMasayoshi TajiriYasuhiro Kanda Yoshitaka UsuiPublished in July, 2023NISSAN TECHINICAL REVIEW 2023 No.89Contents