| 摘要 |
PROBLEM TO BE SOLVED: To provide, in a cooling system of an internal combustion engine provided with a plurality of heat exchangers, a thermally-actuated valve gear improving warm-up performance of the internal combustion engine while being compact and light and having simple, inexpensive construction, and also appropriately controlling circulation of cooling water to each of the heat exchangers as required. SOLUTION: The thermally-actuated valve gear is driven by a common thermally-actuated element thermally actuated in accordance with a surrounding fluid temperature and includes a plurality of valve bodies which: controls in accordance with the surrounding fluid temperature a degree of communication between a predetermined region and each of a plurality of fluid paths; are provided in correspondence with the plurality of fluid paths; and includes the main valve element controlling a degree of communication between a radiator and the predetermined region. One of the plurality of valve elements other than the main valve element includes a delay mechanism of delaying start of the control of the degree of communication by the main valve element after start of the control of the degree of communication between the predetermined region and the corresponding fluid path. COPYRIGHT: (C)2010,JPO&INPIT
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