초록 ▼

When the engine is stopped while the engine is warmed up, the cooling water in the engine stays therein without flowing out of the engine, and the cooling water in the radiator or the bypass passage is used for heating source for the heating operation. In this way, it is possible to heat the passeng

When the engine is stopped while the engine is warmed up, the cooling water in the engine stays therein without flowing out of the engine, and the cooling water in the radiator or the bypass passage is used for heating source for the heating operation. In this way, it is possible to heat the passenger compartment continuously even after the engine is stopped and to suppress the temperature of the cooling water from lowering to reduce the emission at restarting of the engine.

대표청구항 ▼

[ What is claimed is:] [1.] 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 pl

[ What is claimed is:] [1.] 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.