How 4 Wheel Drive Works

Speaking of the main components of 4 wheel drive vehicles, there are two differentials; the rear and the front and there is the transfer case. What is more to components is the part-time system which consists of locking hubs too. The above mentioned systems have high-end electronics which avail the traction to the utmost.
Difference between 4WD & AWD
In the debate of AWD vs 4WD, an AWD (all wheel drive) system is one of the types of four-wheel drive systems which is usually driven full time on a dry pavement as well as on ordinary road without scathing the drive-train. Many people are confused about the concept of these two systems. However, they are similar to each other but not identical. So to briefly state the differences between the two, here is some information on an all wheel drive system and a four wheel drive system.
All Wheel Drive Vehicles
In an all wheel drive system, the center differential cannot get locked nor can the system get disengaged. And because of the center differential a car is able to receive the power from the engine and accelerate ahead. Hence vehicles having an all wheel drive system is mainly used on a dry pavement.
This system is mostly seen in vehicles which have wheels more than four, like trucks and SUVs. In such vehicles, all the wheels are powered at all times. As mentioned earlier, this system has a center differential that evenly splits power to both the axles, i.e. front and rear axle. However, when the vehicle suspects an irregular condition, perhaps a slippery road or whatsoever, all the power is instantly transferred to the other axle in a matter of few seconds.
Four Wheel Drive Vehicles
Nevertheless when it comes to a 4WD system, the concept is usually referred to as a part-time system. These systems are generally meant for ideal and extreme (low-traction) conditions like ice, snow, mud and rain as well. With this take the immediate following information below will explain how 4 wheel drive works.

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