| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil passage structure of an internal combustion engine having a variable valve train, in which an oil passage extending to a hydraulic pressure control valve is reduced as much as possible and which enables the number of components and the man-hour of the oil passage machining work to be suppressed. <P>SOLUTION: A hydraulic pressure control valve 101 is arranged behind the cylinder axis C1 of a front cylinder part 4 when viewed in the direction of the axis C0 of a crankshaft 2. A working fluid passage 106 extending to the hydraulic pressure control valve 101 is formed in a crank case 3, and extends in the extending direction of the front cylinder part 4 on the other side of the cylinder axis C1, and turns around the crankshaft 2. Then, the working fluid passage passes across the cylinder axis C1 on the front cylinder part 4 side of the crank case 3, and is connected to the hydraulic pressure control valve 101. <P>COPYRIGHT: (C)2013,JPO&INPIT |
