| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for preventing overheating of an internal combustion engine by using cooling water having specific heat change bands in a plurality of temperature regions. <P>SOLUTION: In a cooling device for an internal combustion engine using cooling water having specific heat change bands C1, C2 while specific heat changes in a plurality of temperature regions, a permissible heat receiving amount (specific heat change amount) by means of specific heat change in the specific heat change band C2 in the highest temperature region is more than that in the other specific heat change bands C1. Accordingly, since the permissible heat receiving amount the specific heat change band C2 of the highest temperature region is large, a temperature of the cooling water hardly exceeds the specific heat change band C2 having the highest cooling water temperature. The time until the temperature of the cooling water exceeds the specific heat change band C2 having the highest cooling water temperature is thereby caused to be long, and the overheating of the internal combustion engine occurring when the temperature of the cooling water exceeds the specific heat change band C2 having the highest cooling water temperature is prevented. <P>COPYRIGHT: (C)2013,JPO&INPIT |
