Abstract
As environmental concerns are getting increasingly important, worlds automobile manufacturers are confronting the mounting pressure to increase the fuel efficiency, highly related to global warming-causing CO2 emissions, and to reduce the exhaust emissions. In order to resolve these issues, automotive companies in Korea also have been striving to develop many advanced technologies such as lean burn engine, direct injection gasoline engine (GDI), direct injection diesel engine, continuously variable transmission (CVT), vehicle lightweighting, lower emissions vehicle, recycling, and various alternative fuel vehicles (AFVs). AFVs include flexible fuel vehicle (FFV) on methanol, natural gas vehicle (NGV),
LPG vehicle, hydrogen vehicle, electric vehicle (EV), hybrid electric vehicle (HEV), and fuel cells vehicle.