Optimal Design Of High-speed Cam Profile And Dynamic Analysis Of Valve Train

This paper presents a symmetric valve driven FB-II cam design and calculate procedure. Dynamic calculating method used to check its all kinds of properties including elastic change, during its different working conditions. We carefully select and optimize the performance and character parameters for the FB-II cam. Properties of this air exchange gear can change greatly as the engine speed changes. According to the calculate results, with higher ample factor.And it also presents a symmetric inlet valve driven MFB-II cam design and calculate procedure, according to the requirement of gas exchange timing and engine work condition, we carefully select and optimize the performance and character parameters for the buffer section and foundational section, and then we get a MFB-II cam profile with higher ample factor, but its low velocity and acceleration restricted in a relatively low level. This cam design has an advantage of good gas exchange quality, better stability and low vibration & noise. So MFB-II cam is an ideal selection for engine with a speed not high than 2000 r/m.