The installation and driving environment model of
diesel power unit was built by using multi-body dynamics software, and
Class D uneven road model was established according to FFT method and real-world usage scenarios. Based on the established model, the influence
of vibration for diesel power unit was studied under the variation conditions
of vehicle speed, vehicle body mass, and suspension stiffness. The results show
that the vibration of diesel power unit indicates the distribution of
continuous frequency under the conditions of tracked vehicle uneven road driving.
The change of vehicle velocity will lead to small-amplitude
increase of vibration intensity, and the change of vehicle body mass will
influence the amplitude and frequency of small-amplitude vibration. The vehicle body mass increases, and the amplitude and
frequency of small-amplitude vibration decrease. In
addition, increased suspension stiffness will lead to a significant increase in
both the amplitude and frequency of vibrations in the diesel power unit, making
it the most influential factor among the three.
JI Shude, FENG Fuzhou, WU Zhiqiang, ZHU Junzhen, KONG Xiangxin
. Track Installation Environment Modelling and Uneven
Road Vibration Analysis of Diesel Power Unit[J]. Vehicle Engine, 2025
, 0(5)
: 42
.
DOI: 10.3969/j.issn.1001-2222.2025.05.006
