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System and method for controlling a ventilation unit of a vehicle

  • US 20070243808A1
  • Filed: 03/21/2006
  • Published: 10/18/2007
  • Est. Priority Date: 03/21/2006
  • Status: Active Grant
First Claim
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1. A sensor system for controlling a ventilation unit of a vehicle, said ventilation unit including an inlet air valve for switching between an outside air mode and a recirculation mode, and said system comprising:

  • a sensitivity selector for enabling a user to select an air quality threshold;

    an air quality sensor proximate an exterior of said vehicle for detecting an air quality parameter;

    a controller responsive to said sensitivity selector and said air quality sensor, said controller being configured for communication with said inlet air valve, said controller receiving a current value of said air quality parameter for comparison with said air quality threshold, and said controller generating a switch signal in response to said comparison for adjusting said inlet air valve between said outside air mode and said recirculation mode.

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