Patent ID: 6032869
Filing Date: 2000-03-07
Classification: B60H,F01P

Abstract:
A heating apparatus for a vehicle having a water-cooled engine cooled by cooling water, comprising:a heat exchanger for heating air by carrying out a heat exchange between the air and the cooling water;a plurality of circuits in which the cooling water circulates, said plurality of circuits including a circuit in which the cooling water flows through said water-cooled engine and an engine bypass circuit in which the cooling water having flowed out of said heat exchanger bypasses said water-cooled engine and flows into said heat exchanger again;an electric water pump disposed in said plurality of circuits for generating a flow of the cooling water in said plurality of circuits when an electric power is supplied thereto;selecting means disposed in said plurality of circuits for selecting at least one of said Plurality of circuits in which the cooling water circulates; andcontrol means for controlling said selecting means;and said electric water pump in such a manner that when said water-cooled engine is stopped, said electric water pump is operated and said selecting means selects said engine bypass circuit.