| 摘要 |
PROBLEM TO BE SOLVED: To reduce drive loss of an oil pump. SOLUTION: An oil supply device 1-1 for an internal combustion engine is provided with an oil tank 2 storing oil, an oil pump 3 supplying oil in the oil tank to each supply section of the internal combustion engine, a main gallery connected to the oil pump 3 and supplying oil to an always supply section 5, a low rotation speed supply passage 6 branching off of a main gallery 4 and supplying oil to a low rotation speed supply section 10, a low rotation speed valve 8 controlling communication between the main gallery 4 and the low rotation speed supply passage 10, a high rotation speed supply passage 7 branching off of the main gallery 4 and supplying oil to a high rotation speed supply section 11, a high rotation speed valve controlling communication between the main gallery 4 and the high rotation speed supply passage 11, and a control means opening the low rotation speed valve 8 only at a time of low rotation speed of the internal combustion engine and opening the high rotation speed valve 9 only at a time of high rotation speed. COPYRIGHT: (C)2007,JPO&INPIT
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