Abstract: A high density power-train system based on ISG motor is designed for the future military hybrid vehicles, and the structure of the system is designed. The line-based control strategy of the power-train system is established，and also the control objectives and working mode are divided. A backward-simulation model of ISG hybrid system based on ADVISOR is established. The performance of ISG hybrid system based on the parameters of a subsection ISG motor and diesel engine is simulated. The result shows that the power-train system can improve the torque characteristic greatly, and enhance the torque ratio-t ranges. The power-train system can also optimize the working points of engine to reduce the average fuel consumption rate of diesel engine.

Key words: ordnance science and technology, hybrid power, ISG, simulation experiment, control strategy