What Does Vehicle Dynamics Refer To?

[MacCody]

Vehicle dynamics refers to the average driving speed that a vehicle can achieve when driving straight on good road surfaces, determined by the longitudinal external forces acting on the vehicle. The resistances encountered during driving include rolling resistance, air resistance, gradient resistance, and acceleration resistance. A vehicle must have sufficient driving force to overcome these resistances to travel at a higher average speed. Vehicle dynamics are generally evaluated by three indicators: 1. The vehicle's maximum speed: The highest driving speed achievable on a level, good road surface (concrete or asphalt) with rated load in the highest forward gear; 2. The vehicle's acceleration time: The time required for the vehicle to start in first gear and accelerate with maximum intensity (including selecting appropriate shift timing), gradually shifting to the highest forward gear to reach a predetermined speed or distance; 3. The vehicle's maximum gradient climbing ability: The ability of a fully loaded vehicle to climb the maximum gradient in first gear on a good road surface.