Heating and ventilating installation for motor vehicles

Claim 1

An automotive vehicle, particularly a passenger car having a liquid-cooled rotary piston front engine and a temperature control unit for the engine and the interior of the passenger compartment of the vehicle, said temperature control unit comprising engine radiator means, disposed laterally of the engine for cooling said engine and for heating the interior of the vehicle, having an exhaust duct connected thereto, a ventilation duct connected to said exhaust duct by a closable air mixing channel branching off said exhaust duct and connected to said passenger compartment by closable mixing conduits for providing a direct airflow communication path between said radiator and said passenger compartment, said air mixing channel being provided with a pair of fresh air intakes and a blower disposed between the intakes of said pair of fresh air intakes and being downstream of said exhaust duct, each of said intakes being selectively closable by a steplessly adjustable flap.