What Does the Axle of a Four-Wheel Drive Vehicle Mean?

1 Answers
DelAlyssa
07/30/25 7:27am
Four-wheel drive means that all four wheels of the vehicle can receive driving force. In this way, the engine's power is distributed to all four wheels, making it less likely for the wheels to slip when encountering poor road conditions, and significantly improving the vehicle's off-road capability. Four-wheel drive systems are mainly divided into two categories: part-time four-wheel drive (PartTime4WD) and full-time four-wheel drive (FullTime4WD). Part-Time Four-Wheel Drive: The use of part-time four-wheel drive can be divided into two modes: one is two-wheel drive, where only two wheels receive power, making it no different from a regular vehicle; the other is four-wheel drive, where the front and rear axles distribute power equally in a 50:50 ratio. Part-time four-wheel drive has a long history, with the advantages of simple structure and high reliability. After installing free-wheel hubs (FreeWheelHub), it becomes even more fuel-efficient. Full-Time Four-Wheel Drive: Full-time four-wheel drive is a system where all four wheels of the vehicle continuously maintain driving force. To further classify full-time four-wheel drive systems, they can be divided into fixed torque distribution (50:50 ratio between front and rear) and variable torque distribution (variable power distribution ratio between front and rear). Full-time four-wheel drive also has a long history and offers greater reliability, but it consumes more fuel.
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