Method and apparatus for preventing fogging on the windows of a motor vehicle
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United States of America Patent
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Dec 6, 2005
Issued Date -
N/A
app pub date -
Apr 26, 2004
filing date -
Oct 26, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The regulated heating and air conditioning installations normally enable, when controlled, integration of the main factors affecting the comfort of passengers, in particular preventing the windscreen and the other windows from getting clouded. In order to detect incipient mist formation, condensation and moisture sensors generate detection signals, which initiate steps for preventing mist formation when a threshold value is exceeded. Measures are taken for preventing mist formation based on requirements and in a manner adapted to the changing moisture conditions of the glass panes, for example, by using points of intervention stored in a processor. Steps are therefore taken to prevent mist formation, based on moisture variation gradients of the glass panes. Depending on the moisture of the glass panes varying in time and in terms of values, each point of intervention is generally set on as soon as possible, but the latest possible, the local conditions and local meteorological elements being taken into consideration when the method is applied.
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