What Does On-Demand Four-Wheel Drive Mean?

[Stewart]

On-demand four-wheel drive refers to a system that activates four-wheel drive when necessary, while operating as a two-wheel drive system under normal conditions. Compared to other four-wheel drive systems, on-demand four-wheel drive has a simpler structure, effectively reducing costs and overall vehicle weight. In daily use, on-demand four-wheel drive can handle sudden slippage, improving driving performance. However, it is not suitable for high-intensity off-road conditions. Each driven wheel of a car must have a differential to enable turning on high-traction surfaces, as different wheels rotate at different speeds during turns. The differential is the component that eliminates this speed difference. Full-time four-wheel drive is based on this concept, with its central differential serving to eliminate the speed difference between the front and rear axles, ensuring four-wheel drive at all times.