A study on the reduction of crankshaft rotational vibration velocity by using a motor-generator

摘要

A study was made of the possibility of reducing engine speed variation and engine block roll vibration by using a motor connected directly to the engine crankshaft. Motor torque having the opposite phase of engine torque was applied to reduce vibration It was found that motor torque which showed a rectangular waveform change in synchronization with the crank angle allowed the smallest motor size. The control technique that minimizes energy losses was also confirmed.