Design of Cam Profile Based on Miller-Cycle
The necessity which high-order polynomials are used for optimization design of cam profile is analyzed in valve train of high-speed engines. Basing on the basic idea of Miller-cycle delayed intake valve closing time to reduce the compression ratio, this method is used for re-optimize design of the cam profile in CY4D47 diesel engine. The general method is given by the five-order polynomial. So, the improved cam profile equations can be obtained, then, the lift, velocity, acceleration and Jerk curves are got, lastly, the cam profile are drew by AutoCAD soft.
Long Chen, Yongkang Zhang, Aixing Feng, Zhenying Xu, Boquan Li and Han Shen
S. L. Wei et al., "Design of Cam Profile Based on Miller-Cycle", Applied Mechanics and Materials, Vol. 43, pp. 588-593, 2011