Method for avoiding fogging of a vehicle screen comprises activating an air conditioning system when the difference from the screen temperature and the dew point temperature sinks below a prescribed threshold value

摘要

Method for avoiding fogging of a vehicle screen comprises measuring a dew point temperature and a screen temperature and activating an air conditioning system when the difference from the screen temperature and the dew point temperature sinks below a prescribed threshold value which depends on a temporary change of screen temperature and/or dew point temperature and/or the difference between the two. Preferred Features: The threshold value has a prescribed constant value in a value region of the temporary change. A hysteresis of the temporary change is considered during a transition between two constant values.