| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve cooling performance in a cooling device that includes an engine oil cooler and an oil cooler for transmission. <P>SOLUTION: A supply path 32 for coolers that receives cooling water from a water pump 11 is branched into an engine side branch path 34 and a transmission side branch path 35, at a predetermined branch position 33. A third thermostat valve 38 which operates according to the temperature of the cooling water is provided between the branch position 33 and the oil cooler 31 for transmissions. Temperature increase of an engine and a heat core 23 is facilitated by limiting the flow amount of the cooling water flowing into the oil cooler 31 for transmissions, by opening the third thermostat valve 38 during cooling. Since the flow amount to be supplied to the engine oil cooler side 30 is not limited, temperature increase of the engine oil by the cooling water is facilitated, and friction increase is suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
