| 摘要 |
An oil supply structure for reducing friction of a cam shaft is provided to solve problems of complexity of a structure, design limitation and increase in manufacturing cost by using a cam shaft. An oil supply structure for reducing friction of a cam shaft comprises an oil supply hole in a cylinder head(110), and an oil supply hole(121) in a cam shaft(120). An outlet of the oil supply hole is located on the inner peripheral surface of a journal section(111) and an inlet is connected with an oil gallery(112) in the cylinder head. An oil pocket(115) is formed only in a specific space of a cam cap(114) assembled to the cylinder head. The oil pocket is formed such that an opening of one end of the oil supply hole in the cylinder head is connected with an opening of the other end the oil supply hole in the cylinder head. The oil pocket receives oil from the oil supply hole in the cam shaft.
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