| 摘要 |
PROBLEM TO BE SOLVED: To improve the lubricity and assemblage of a camshaft pin. SOLUTION: The camshaft pin 61 is installed in the camshaft pin mounting hole 66a of a cylinder head 4, and inserted into the shaft hole 28a of a camshaft 28. A projected part 71 facing the camshaft pin mounting hole 66a is projectedly provided on the inner side surface of the cylinder head 4, and a pin storage part 72 communicating with the camshaft pin mounting hole 66a and forming the clearance 74 thereof from the camshaft pin 61 is provided on the upper surface 71b thereof. The upper part of the pin storage part 72 forms an opening part 73 communicating with a chain chamber 51 and allowing the shaft hole 28a and the cam shaft pin 61 to be visible from the outside. Oil flows into a clearance 74 inside the pin storage part 72 to form an oil sump so as to increase the lubricity of the camshaft pin 61. The shaft hole 28a and camshaft pin 61 is visible through the opening part 73, the installation operation is performed while observing the shaft hole 28a to improve an assembling workability. COPYRIGHT: (C)2003,JPO
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