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What does 4WD mean?

1 Answers

DeCaden

07/29/25 8:39pm

4WD refers to a vehicle that maintains four-wheel drive throughout the entire driving process. Here is an introduction to 4WD vehicles: 1. The engine's output torque is distributed to the front and rear wheels in a fixed ratio. This drive mode ensures good off-road and handling performance at all times, but it cannot adjust torque distribution based on road conditions and has higher fuel consumption. When purchasing a 4WD model, there are three types: part-time 4WD, on-demand 4WD, and full-time 4WD. 2. Part-time 4WD requires the driver to manually switch to 4WD mode by engaging or disengaging the transfer case to choose between 4WD or 2WD. It is the most common 4WD mode. Although it is 4WD, it is not equipped with a differential lock. If switched to 4WD mode on smooth roads, it cannot turn smoothly on curves. 3. Full-time 4WD is equipped with three differential locks, providing better stability in 4WD mode. It performs well on both straight roads and curves. This 4WD mode has good handling and does not require manual switching by the driver, but it lacks intelligence and cannot automatically distribute torque. Vehicles with this 4WD system generally have higher fuel consumption. 4. On-demand 4WD is similar to real-time 4WD in overall structure and resembles part-time 4WD, but it requires automatic switching with the help of multiple computer chips. It can automatically switch between 4WD and 2WD based on road conditions, combining the advantages of full-time 4WD and part-time 4WD, making it more convenient to use.

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