Scientists at Purdue University are developing an environmentally friendly technology called homogeneous charge compression ignition (HCCI), which will reduce greenhouse emissions commonly associated with combustion engines. HCCI technology can be applied to both diesel and gasoline engines and will increase engine performance, efficiency, reduce fuel consumption and help to clean up the environment.
Currently, scientists at Purdue are building a multi-cylinder "fully-flexible variable valve actuation" prototype.
Implications - The new ignition technology will use "variable valve actuation," which "would decouple the motion of the piston from the motion of the intake and exhaust valves." This change could really effect the environment in a good way, making it possible for engineers to make "diesel and gasoline engines both cleaner and more efficient" because of a new-found control over the valves.