US Patent 7625274 Ventilation device

Patent 7625274 was granted and assigned to BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT on December, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

76252740

Patent Inventor Names

Hary Geiger0

Date of Patent

December 1, 2009

Patent Application Number

112068600

Date Filed

August 19, 2005

Patent Primary Examiner

‌

Steven B McAllister

Patent abstract

A ventilation device for ventilating the interior of a motor vehicle, and a method therefore, in which sensor for determining at least one parameter reflecting the degree of glass condensation is used to determine whether to maintain the vehicle ventilation system in recirculation mode during the actuation of a windshield and/or headlight washer, or to switch to a fresh air mode. In response to the sensor signals, an evaluation device generates a signal for at least temporarily switching to fresh air mode when a parameter value exceeds a predefined value, or generates a time period for a residence time to be observed in recirculation air mode.