What is 4WD in cars?
1 Answers
4WD stands for "Four-Wheel Drive", which means all four wheels have driving force. 4WD includes three forms: full-time four-wheel drive, part-time four-wheel drive, and on-demand four-wheel drive. In the early years, four-wheel drive was mainly used for rugged off-road vehicles, but now it is also used in urban SUVs, and many mid-to-high-end sedans and luxury sports cars also adopt four-wheel drive. The following is an introduction to full-time four-wheel drive, part-time four-wheel drive, and on-demand four-wheel drive: 1. Full-time four-wheel drive : Cars equipped with a full-time four-wheel drive system are always in four-wheel drive mode, and this system is commonly found in some luxury SUV models. 2. Part-time four-wheel drive: This four-wheel drive system can switch between four-wheel drive and two-wheel drive via a switch inside the car. Most off-road vehicles with part-time four-wheel drive have a low-range four-wheel drive function. When switched to low-range four-wheel drive, the torque on the wheels is further amplified, helping the vehicle to escape difficult situations. 3. On-demand four-wheel drive: This four-wheel drive system is generally used in some urban SUV models or some front-engine cars. Cars equipped with an on-demand four-wheel drive system usually drive in front-wheel drive mode, and power is distributed to the rear wheels only when the front wheels slip or when full acceleration is needed. On-demand four-wheel drive has lower costs and lower fuel consumption, making it suitable for use in some urban SUVs and sedans.
