| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine warm-up device, for reducing the size of a pump and reducing friction of a pump, by quickly heating lubricating oil with exhaust heat and reducing friction loss even in cold start to heat the lubricating oil with recirculated exhaust. SOLUTION: In an engine 1 provided with an exhaust recirculation device, the exhaust in an exhaust recirculation passage 5 is introduced into a heat-exchanging part 8 which is disposed to a lubricating oil storage part of an oil pan 2, and the lubricating oil heated by heat-exchange with the recirculation exhaust is sucked into the oil pump 7 and is circulated in each part of the engine. The lubricating oil is quickly heated by the exhaust heat even in the cold start and the friction loss in the cold start is reduced. By the structure for sucking the lubricating oil heated by the recirculation exhaust into the oil pump, the burden on the oil pump can be reduced and its size and friction loss can be reduced. COPYRIGHT: (C)2005,JPO&NCIPI
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