UMLUFTTROCKNER FUER VERBRAUCHSOPTIMIERTE DIESEL- UND ELEKTRO-AUTOMOBILE

Motor vehicles with fuel-optimized, direct-injection diesel engines, as well as electric and hybrid vehicles already have too little energy to heat the passenger compartment. This consequently makes it impossible to produce a comfortable temperature inside the vehicle in fresh air mode without additional measures at low outside temperatures. Exclusive or at least partial operations in recirculated air mode would yield advantages allowing these vehicles to be adequately heated via the battery or engine heat. However, this is impossible without desiccating the recirculated air, since the air becomes increasingly laden with water vapour due to moisture from the passengers and fittings, ultimately causing the windows to mist up. Messrs. Behr GmbH & Co. have developed a variety of simple adsorption desiccators to remove moisture from the intake air regardless of the amount of recirculated air. These desiccators use a non-toxic, ecologically safe adsorption material and reliably prevent the windows from misting up. The use of such desiccators for recirculated air not only offers advantages in terms of energy use, but also tangibly increases both road safety and the comfort of the passengers. A misty windshield when starting in the cold winter is spontaneously prevented, and exhaust gas and other noxious substances are prevented from entering the vehicle in recirculated air mode while in a traffic jam or driving, even at low outside temperatures. The functional principles and possible applications of two types of the desiccator for recirculated air which can be realized in various forms are presented here