| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively utilize the waste heat of a driving electric circuit supplying the driving current to a motor. <P>SOLUTION: The cooling water recovering the waste heat of the driving electric circuit 3 is supplied to an engine 1 from a cooling water inlet side of a cylinder head 1a. Whereby as the warm-up operation of the engine 1 can be accelerated by utilizing the waste heat of the driving electric circuit 3, the waste heat can be effectively utilized. Further the warm-up time can be shortened, and the total emission of harmful substances (emission) in the exhaust discharged from the engine 1 can be reduced. When a temperature of the cooling water returned to the driving electric circuit 3 is over a specific temperature, the supply of the waste heat of the driving electric circuit 3 to the engine 1 is stopped, whereby the driving electric circuit 3 can be prevented from being thermally damaged by the waste heat of the engine 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
