Modular engine gradual change camshaft

The utility model relates to a modular engine gradual change camshaft belongs to the engine technology field, include: preceding axis body 1, cam 2, sleeve 3, spring 4, connect axis 5, screw 6 and back axis body 7 and little steel ball 8. Its characterized in that: preceding axis body 1, connect axis 5 and back axis body 7 through the muffjoint, the cavity of spring and steel ball can be placed information. Through the change of the speed of a motor vehicle, steel ball centrifugal force changes, and the axis body takes place certain deflection with the back axis body before making to change valve timing, make diaxon body return through the spring. 本实用新型涉及种组合式发动机渐变凸轮轴，属于发动机技术领域，包括：前轴体1、凸轮2、套筒3、弹簧4、连接中轴5、螺钉6和后轴体7及小钢珠8。其特征在于：所述前轴体1、连接中轴5与后轴体7通过套筒连接，形成可放置弹簧与钢珠的空腔。通过车速的变化，钢珠离心力发生变化，使前轴体与后轴体发生定偏转，从而改变配气相位；通过弹簧使两轴体回位。