Vehicle dynamics are primarily influenced by engine parameters, final drive ratio, transmission gear count and ratios, vehicle aerodynamics, vehicle mass, tire size and type, and driving conditions. 1. Influence of engine parameters: Includes maximum engine power, maximum engine torque, and the shape of the engine's external characteristic curve. 2. Impact of final drive ratio: The selection of the final drive ratio mainly considers the vehicle's purpose and frequently encountered road conditions. 3. Effect of transmission gear count: Without auxiliary transmissions or transfer cases, the transmission gear count refers to the number of forward gears in the transmission. Increasing the number of transmission gears allows the engine to operate closer to its maximum power condition more frequently, thereby increasing the engine's average power output. 4. Influence of transmission ratios: Includes the minimum and maximum transmission ratios as well as the proportional relationship between the gear ratios. 5. Effect of vehicle aerodynamics: The vehicle's drag coefficient impacts its dynamics. Aerodynamics significantly affect high-speed vehicle dynamics and fuel efficiency, but have minimal impact on the maximum road resistance the vehicle can overcome. 6. Impact of vehicle mass: As total vehicle mass increases, the dynamic factor decreases while road resistance and acceleration resistance increase. Therefore, for vehicles with a specified payload capacity, reducing the vehicle's own mass while ensuring sufficient stiffness and strength is crucial for improving dynamics. 7. Influence of tire size and type: Both driving force and rolling resistance, as well as traction, are affected by tire size and type. Thus, proper selection of tire tread patterns and types is significant for vehicle dynamics.
