What Do Electric Four-Wheel Drive and On-Demand Four-Wheel Drive Mean?
1 Answers
Here are the differences between electric four-wheel drive and on-demand four-wheel drive: 1. Different Structures: Compared to full-time four-wheel drive, on-demand four-wheel drive has a much simpler structure. Due to its unique design, it is more suitable for vehicles with a front transverse engine and front-wheel-drive platform, making it possible for many SUVs or four-wheel-drive sedans based on this platform to be equipped with a four-wheel-drive system. 2. Different Power Transmission: Currently, most on-demand four-wheel-drive systems are limited by structural flaws when transmitting power between the front and rear axles, unable to deliver more than 50% of the power to the rear axle. This limits its active safety control range compared to full-time four-wheel drive. 3. Different Off-Road Capabilities: On-demand four-wheel drive uses a lower-grade viscous coupling center differential. Its introduction serves only two purposes: first, its simpler structure reduces costs, and second, it saves fuel. Vehicles equipped with on-demand four-wheel drive have fuel consumption similar to that of ordinary two-wheel-drive vehicles.