| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent outflow of hot water from a heat storage tank caused by a coolant circulation operation by a coolant circulation pump for a heater during automatic stopping of an internal combustion engine. <P>SOLUTION: A hot water accumulator 62 is applied to a hybrid vehicle having the internal combustion engine 12 and an electric motor 14 as an auxiliary power source, recovers the hot water from a cooling system of the internal combustion engine 12 to the heat storage tank 64 by communicating a duct 66 with a duct 52 through a three-way selector valve 54, and supplies the hot water to the cooling system of the internal combustion engine in cold starting of the internal combustion engine. The hot water accumulator 62 sets a severe stop permission condition of the internal combustion engine where the internal combustion engine 12 is hardly automatically stopped in recovering hot water comparing with the case in recovering non-hot water (S210 to S230), prevents automatic stop of the internal combustion engine 12 as long as the severe stop condition is not established (S250 and S260), and prevents the hot water in the heat storage tank 64 from being sucked by an electric pump 56. <P>COPYRIGHT: (C)2004,JPO |
