Abstract: A method for regulation of the operation of a vehicle auxiliary heating/auxiliary ventilation by making use of the heating energy provided by the auxiliary heating. The front and the rear system are activated until a certain limit temperature of the front and rear water circuit for heating or air-conditioning the vehicle interior is reached, so that the interior can be heated more rapidly and uniformly, due to the entire water circuit being heated. After the limit temperature of the front and rear water circuit is reached, only the front water circuit continues to be heated, for example, in order to defrost the windshield and to heat the front interior. If the blow-in temperature in the front interior has reached a certain threshold value or an internal deviation of a regulator lies below a predetermined further limit value, only the rear water circuit is switched on again.

Abstract: A ventilation nozzle for the interior of a motor vehicle, having a nozzle housing and a set of pivotable fins which extend parallel to one another over the housing opening. For the purpose of obtaining an aesthetic appearance when the ventilation nozzle is installed in curved wall surfaces, the fins and those housing walls of the nozzle housing which are parallel to the fins each have a front edge extending in a curved manner, matching the curvature of the wall surface, and each fin is divided in the longitudinal direction into a front part, which bears the curved front edge, and into a rear part which continues immediately from the front part. The front parts are fastened rigidly in the nozzle housing, whereas the rear parts are held pivotably on the front parts and are coupled to one another for the purpose of a joint pivoting movement.