Is 4WD Full-Time Four-Wheel Drive or Part-Time Four-Wheel Drive?
1 Answers
4WD refers to four-wheel drive. The classifications are as follows: 1. Full-time drive: The front and rear wheels always maintain a four-wheel drive mode, with the engine output torque distributed 50:50 between the front and rear wheels during driving. Full-time drive offers excellent driving control and tracking performance, but it consumes more fuel and has poor fuel economy. 2. Part-time drive: The driver can switch between two-wheel drive or four-wheel drive modes by engaging or disengaging the transfer case based on road conditions. This is the most common drive mode for general off-road vehicles or 4WD SUVs. 3. On-demand drive: The drive mode is controlled by a computer. Under normal road conditions, (front) rear-wheel drive is generally used. If the road is poor or the drive wheels slip, the computer will automatically detect and immediately distribute the engine output torque to the other two wheels, switching to four-wheel drive mode. This system is simple to operate.