Patent ID: 6027032
Filing Date: 2000-02-22
Classification: B60H,F01P,F24V

Abstract:
A heating apparatus for heating a passenger compartment of a vehicle having a water-cooled internal combustion engine, said heating apparatus comprising:a heating heat exchanger for heating said passenger compartment by heat-exchanging between cooling water having cooled said water-cooled engine and air to be blown into said passenger compartment;a heat-generating unit using a shearing force, said heat-generating unit having a rotor which rotates when a rotational driving force of said engine is applied thereto, a heat-generating chamber for sealing therein viscous fluid which generates heat when a shearing force generated by a rotational driving force of said rotor is applied thereto, and a cooling water passage in which the cooling water circulates between said engine and said heating heat exchanger, said heat-generating unit heating the cooling water to be supplied to said heating heat exchanger by generated heat of the viscous fluid in said heat-generating chamber;shearing state switching means for switching a shearing state of the viscous fluid by the rotational driving force from said engine to said rotor;detecting means for detecting a rotational speed of said rotor; anda heating control unit for controlling said shearing state switching means to reduce loads of said engine when the rotational speed of said rotor detected by said detecting means is more than a predetermined value.