利用车辆动力仿真软件构建了柴油机动力装置的运行安装环境，结合使用场景构建了铺面路、波形路、D级路、坡面路四种典型路面。基于构建的车辆和道路模型，开展了不同路面下柴油机动力装置振动特性分析。研究结果表明：不同表面特征的路面通过车体对柴油机动力装置的振动产生不同的影响，表现为振动峰值和频带分布的差异。车辆起动升速过程中，柴油机动力装置振动峰值最大值从大到小依次为D级路、波形路、坡面路和铺面路。就振动峰峰值而言，波形路、D级路和坡面路相当，铺面路最小；从振动频谱来看，波形路、D级路、坡面路的振动频带较为集中，铺面路大致呈均匀分布。在车辆正常行进过程中，坡面路产生的振动大于D级路、波形路和铺面路。

The installing and driving environment model of diesel power unit was built by using vehicle dynamics software, and four road models including paved road, wave-typed road, D-staged road and slope road were established according to application scenes. Based on the established vehicle and road models, the vibration characteristics for diesel power unit under different road conditions were studied. The results show that the vibration peak and frequency band distribution of diesel power unit are influenced at different degrees by different surface characteristic roads. The order of maximum peak for diesel power unit is D-staged road, wave-typed road, slope road and paved road during the velocity-increasing process of starting on four kinds of roads. According to the peak-peak value, the vibration of wave-typed road, D-staged road and slope road are equivalent and the vibration of paved road is the smallest. According to the frequency spectrum, the frequency bands of wave-typed road, D-staged road and slope road are relatively concentrated and that of paved road is approximately even. During the normal driving of vehicle, the vibration of slope road is larger than that of the other three roads.