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Advanced Automotive Gasoline Engines

PROCESS AND TECHNOLOGY STATUS – Internal combustion engine technology is constantly evolving. A number of improvements in gasoline-powered vehicles have been made to optimize combustion, improve fuel economy and reduce emissions. Examples of advanced gasoline technologies include reduced engine friction losses, direct gasoline injection, engine downsizing with turbocharger, variable valve actuation (VVA) and homogeneous charge compression ignition (HCCI). The majority of these technologies are already commercially available or close to being on the market. Although HCCI technology is still under development for both gasoline and diesel engines, it promises improvement in fuel economy and exceptionally low NOx and soot emissions.