What are the advantages and disadvantages of on-demand four-wheel drive on snowy and icy roads?
1 Answers
On-demand four-wheel drive has the following advantages and disadvantages when driving on snowy and icy roads: 1. Advantages: On-demand four-wheel drive provides better traction at high speeds, with less tire slippage under high torque. The four-wheel drive system also helps to some extent in suppressing side slips on slippery roads and improving vehicle tracking. 2. Disadvantages: Most on-demand four-wheel drive systems are limited by structural flaws when transferring power between the front and rear axles, unable to deliver more than 50% of the power to the rear axle, resulting in incomplete power utilization. Comparatively, the active safety of on-demand four-wheel drive vehicles is not as high as that of full-time four-wheel drive vehicles.