某大功率柴油机推进动力模块动态特性研究

以某型16缸大功率增压柴油机动力模块为研究对象,采用AMESim软件建立了柴油机动力模块的仿真模型,并通过试验数据对仿真模型进行了标定。基于该模型对柴油机推进动力模块加速过程中模块转速与设定值的偏差,以及瞬态调速过程中模块带大惯量运行的规律以及喷油控制优化进行了仿真研究。研究结果表明:减小涡轮增压器惯量可以优化柴油机加速过程的转速响应;负荷突加、突卸瞬态过程动力模块转动惯量与转速波动值呈幂函数关系;采用PID控制可以更有效地优化推进动力模块的动态特性。

Research on the Dynamic Performance of a Large-PowerDiesel Engine Propulsion Power Module

The power module of a 16-cylinder large-power turbocharged diesel engine was studied.A simulation model of the diesel engine power module was established using AMESim software.The model was calibrated based on the experimental data.Based on this model,the deviation between the real mo-dule speed and the set value during the acceleration process of the diesel engine propulsion power mo-dule,as well as the operation law of the module with large inertia during the transient speed control process and the optimization of fuel injection control was simulated and studied.The analysis results show that the speed response during the acceleration process of the diesel can be optimized by reducing the inertia of the turbocharger;in transient adjustment conditions of sudden load increase and decrease,the moment of inertia of the module and the value of speed fluctuation are in the relation of power function;using the PID control can effectively optimize the dynamic performance of the propulsion power module.