Camshaft assembly of engine with variable valve opening duration
A technology of opening duration and camshaft, which is applied in the direction of engine components, engine control, combustion engine, etc., and can solve the problems of long duration of valve opening, difficulty in sufficient engine power and economy, etc.
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[0027] Referring to Fig. 1 and Fig. 2, the present invention includes a group of valve opening duration control units whose number matches the number of engine cylinders, a camshaft 1 and a variable valve timing control mechanism 8, and the valve opening duration control unit is connected with the camshaft 1, the camshaft 1 is a spline shaft, and the variable valve phase control mechanism 8 is assembled on the input end of the camshaft 1.
[0028] see Figure 3 ~ Figure 12 , the valve opening duration control unit of the present invention includes a sleeve cam A 3, a sleeve cam B 4, an angle control sleeve 5, an actuator 6 and a controller 7, and the sleeve cam A 3 is provided with a cam at one end. The sleeve structure has a spline tooth 3-1 on the outer wall of the other end, a spline tooth groove Ⅰ 3-2 on the inner wall, and a positioning pin on the cam end of the inner wall of the sleeve cam A. Slot 3-3, the other end is provided with locking groove 3-4, and the sleeve ca...
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