What is the Meaning of Four-Wheel Drive?
1 Answers
Four-wheel drive (4WD) means that the vehicle maintains a four-wheel drive mode throughout the entire driving process, with the engine's torque distributed to the front and rear wheels at a fixed ratio. This ensures excellent off-road and handling performance at all times, but it cannot adjust torque distribution based on road conditions. There are several types of 4WD systems: 1. Part-time 4WD: A system where the driver manually switches between two-wheel drive and four-wheel drive; 2. On-demand 4WD: A system that engages four-wheel drive only when necessary; 3. Full-time 4WD: A system where all wheels remain independently driven at all times during driving. 4WD vehicles are equipped with a transfer case, which allows the two additional wheels to disengage on flat or high-speed roads, improving fuel efficiency, ease of operation, and reducing mechanical wear.