Quantitative research on the tracked vehicle energy consumption characteristics based on the longitudinal-vertical coupling dynamics

In this paper, an energy computation method is proposed based on the longitudinal-vertical coupling tracked vehicle dynamic model to quantificationally study the energy generation and dissipation for tracked vehicles under off-road conditions. When the tracked vehicle drives on uneven road, the suspension damping components and the additional driving resistance caused by ground roughness consumes part of the driving power. The energy consumption distributions of the tracked vehicle under different speeds, different road conditions and different driving conditions are investigated and compared. The results indicate that a larger road roughness coefficient, a higher travelling speed and a greater driving force will make the proportions of energy consumed by the suspension dampers and the additional driving resistance to the total energy consumption larger. The influence of road conditions on the energy consumption distribution of the tracked vehicle takes precedence over the tracked vehicle speed and the effect of the driving force is internally due to speed changes.