Mobile Source Emission Control Technology

Gasoline vehicle emission control technology mainly includes exhaust, evaporative, and crankcase emission control technologies. Among them, exhaust emission control technologies include in-cylinder purification technologies such as electronic fuel injection systems (EFI), exhaust gas recirculation (EGR), variable valve timing systems (VVT), turbocharging intercooling technology, gasoline direct injection (GDI), and external after-treatment technologies such as three-way catalytic conversion and gasoline particulate filters (GPF); evaporative emission control technology includes fuel evaporation control and onboard refueling vapor recovery (ORVR) technology; crankcase emission control technology involves crankcase forced ventilation technology.