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Old 04-29-2011, 11:49 AM   #1
chrisdh79
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Active Grille Shutters

I was curious as to what these were, and how they benefited the new Focus. I found a good website that explains it. Still not certain what models will get this feature.

http://www.thetorquereport.com/2011/...ially_rat.html

"Unlike other competitors, the Ford Focus employs full active grille shutters. Active grille shutters help optimize aerodynamics by using vents to control airflow through the grille to the cooling system and engine compartment.

If air is required to cool the engine, the vents are opened. If no airflow is needed the vents are shut, contributing to significantly reduced aerodynamic drag.

Mounted in the grille aperture ahead of the radiator, the active grille shutters feature motorized horizontal vanes that can rotate through 90 degrees to block the airflow. Automatically controlled by the car's electronic control unit, the vanes can be rotated into 15 different positions - from fully closed to fully open - depending on the amount of cooling air required.

When fully closed, the reduction in drag means the active grille shutters can reduce CO2 emissions by 2 percent.

As an additional benefit, the system keeps the vanes closed as long as possible when starting from cold, so the engine reaches its most efficient operating temperature more quickly. This also helps reduce fuel consumption."


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Old 04-29-2011, 12:23 PM   #2
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Thanks for the heads up.
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Old 04-29-2011, 01:18 PM   #3
deezx5
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I'm curious how well these work on the new Focus. Its a technique hypermilers have been using for a while to cut drag and allow more heat into the engine bay faster. Here is a link to the homemade version
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Old 04-29-2011, 02:13 PM   #4
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Grill Shutters"

many moons ago (1950ís) there where some cars with the upright front grills, someone designed a Bowden cable & actuator within the car that could close or open the front hinged grills. After awhile the cable & grill hinges seized & that put a stop to that..
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