Description
Active grille shutters, which improve efficiency by opening and closing automatically to control airflow, are popping up on a number of new model Vehicles. When they’re open, the shutters allow air to flow through the radiator and into the engine compartment, as usual, to promote cooling. But when that cooling air is not needed, the shutters close, rerouting air around the vehicle to lessen aerodynamic drag and reduce fuel consumption. As an added bonus, closed shutters also reduce warm-up time in cold weather.
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