| 摘要 |
PROBLEM TO BE SOLVED: To indirectly and securely detect valve lift characteristics variably controlled at a place where high-speed operation is not performed. SOLUTION: An annular disc 29 interposes between a flange part of a sleeve connected to a drive shaft 21 and a flange part of a camshaft 22, and the valve lift characteristics are changed by unequal speed rotation when the center of the annular disc is decentered. A disc housing 34 supporting the annular disc 29 is supported by a first eccentric cam 41 and a second eccentric cam 43. When the first eccentric cam 41 is rotationally displaced by a hydraulic actuator 46, the disc housing 34 is moved and the amount of eccentricity of the annular disc 29 is changed. A potentiometer 5 is attached at one end of a control camshaft 42 of the first eccentric cam 41, and the actual valve lift characteristics are detected through a rotation position of the control camshaft. COPYRIGHT: (C)2007,JPO&INPIT
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