There are many four wheel drive cars in existence and this calls for specialised technicians for repairs and maintenance. Today I want to clear all the doubts present in your mindsets concerning the four wheel drive system and the all wheel drive system. Sincerely speaking, the four wheel drive (4WD) and all wheel drive (AWD) can significantly increase a vehicle traction and handling ability in rain, snow and off-road driving application.
The improvement to 4WD came after realization that the 2WD system was no longer effective for off road driving application. We all know that, the only contact that the vehicle has with the road is it's tires, now taking this point into consideration, I can boldly say that driving and handling are improved when the workload is evenly distributed to the four tires rather than just two tires. Since the improved technology to four wheel drive came up, it has made sure that there is increased traction and it also makes it possible to apply a great amount of energy through the drive system. Now vehicles which are 4WD and AWD can still maintain control while transmitting the levels of power that would cause two wheels to spin either on take off or while rounding a curve. The improved traction of the 4WD and AWD systems allows the use of tires that are narrower than those used on similar 2WD vehicles. The function of the narrow tires is to cut through snow and water rather than hydroplane over them.
To all vehicle owners, I wish to let you know that vehicles equipped with 4WD and AWD are more expensive than 2WD and these vehicles require special service and maintenance which are not performed on 2WD vehicles. Even though there are a few disadvantages associated with 4WD and AWD but these are outweighed by the traction and performance that these systems offer. The special thing about 4WD and AWD is that they both possess a transfer case and front and rear axles. The major difference between a 4WD and AWD system is that in 4WD, the transfer case offers two different speed ratios which are high and low. In an AWD, the transfer case only offers one speed ratio to all the wheels at the same time.
The duty of the transfer case is to split the power from the transmission between the front and rear wheels.