Device for separating fluid flows (L1, L2, L1', L2') in a heater arrangement (1), especially for heating the interior of a motor vehicle, whereby the heating arrangement has at least a heater (4) with a multiplicity of lamellar type heat output elements. A...

The heating of such as diesel fuel on road vehicles during cold weather is provided by an electrical system. The functionality of the system is periodically checked by measuring heating current using a PTC sensor (5). The current value achieved within a sp...