The hev system discussed in this paper applies the technology of computer controlling . this is helpful to improve and develop the high performance hev propulsion system of energy - saving and environment - protecting ability in our country 本文中的hev试验系统应用了计算机控制技术,对于我国自行开发和研制环保、节能的高性能hev混合动力装置具有十分重要的意义。