| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an engine 1 configured to circulate cooling liquid only to a head-side water jacket 14, while regulating circulation of the cooling liquid of the block-side water jacket 13, the engine facilitating keeping the temperature of an inside surface of a block-side water jacket 13 when the circulation of the cooling liquid in the block-side water jacket 13 is stopped without modifying the block-side water jacket 13, and facilitating decreasing the temperature of the inside surface of the block-side water jacket 13 when the cooling liquid is circulated to the block-side water jacket 13. <P>SOLUTION: A surfactant is added to the cooling liquid at a concentration so that both molecules 51 and spherical micelles 52 exist. <P>COPYRIGHT: (C)2012,JPO&INPIT |
