본 VVVT-SHED시스템(이하, SHED시스템)은 CARB(California Air Resources Board), EPA(US. Environmental Protection Agency), CFR(Code of Federal Regulations), EEC(European Economic Community) 등에서 제정한 차량 증발가스(Evaporative Emissions)의 측정 시험을 자동화 할 목적으로 제작되었습니다.
증발가스 측정에 사용되는 탄화수소분석기(THC-Total Hydro-Carbon Analyzer)는 FID(Flame Ionization Detector: 불꽃이온화검출기) 방식을 사용하고, 소프트웨어는 분석기의 선형성 검정(Lin-Check: Linearity Check)을 위한 기능을 포함하고 있습니다.