Wheel caster意思

"Wheel caster" is a term used in the context of vehicle design and engineering, specifically referring to the angle between the centerline of the wheel and the vertical axis of the vehicle. This angle is known as the "caster angle." The caster angle affects the steering and handling characteristics of a vehicle, as it influences the self-centering force of the steering and the stability of the vehicle when traveling in a straight line.

In a vehicle with positive caster, the top of the wheel leans towards the vehicle when viewed from the side. Positive caster is common in most vehicles and helps to provide stability and improve steering control. Negative caster, where the top of the wheel leans away from the vehicle, is less common and is typically used in specialized applications where the steering requires a different feel or in vehicles designed for off-road use.

The caster angle can also affect the camber angle of the wheel, which is the tilt of the wheel when viewed from the front or rear of the vehicle. The combined effect of caster and camber angles can influence the tire wear, handling, and overall performance of a vehicle.