应用一维波动模型对一台车用 6缸直喷式柴油机采用脉冲谐振废气涡轮复合增压系统进行了模拟计算 ,模型预测的进气压力波与实测压力波十分吻合。分析了谐振系统结构参数对进气压力波及充量系数的影响 ,发现对于一定的发动机转速 ,充量系数达到最大时所对应的谐振管长度比压力波幅值达到最大时对应的长度小0 .15～ 0 .2 5 m。参数优化的谐振进气系统的最大充量系数比不用谐振时提高 6 %左右 One-dimensional wave model was used to simulate a 6-cylinder direct injection diesel engine with pulsed resonant exhaust gas turbocharging system. The predicted pressure wave was in good agreement with the measured pressure wave. The influence of the structural parameters of the resonant system on the inlet pressure and the charge coefficient is analyzed. It is found that for a given engine speed, the length of the resonant tube corresponding to the maximum charge coefficient is smaller than the corresponding length when the pressure amplitude reaches the maximum. 15 ~ 0 .2 5 m. The maximum charge coefficient of the parameter-optimized resonant inlet system is about 6% higher than that without resonance