Super Ultra-low Emission Vehicle - Technologies

Technologies

Several techniques can be used to reduce pollution. Since automobiles most heavily pollute when warming up the catalytic converter, moving this closer to the engine (or even heating it electrically) will enable it to quickly become effective. Preheating the cylinder head from previously saved hot coolant is used in some vehicles. Careful management of engine shut down is required to eliminate uncombusted fuel. Engine shutdown while the vehicle is stopped, rather than idling the engine, not only reduces pollution but can greatly improve fuel economy in severe city driving. A vapor tight fuel tank and system eliminate one source of hydrocarbon emission. Special catalytic converters called three-way catalytic converters reduce all three of the target pollutions from the exhaust pipe.

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