Delong differential is divided into two types, one is wheel differential and the other is axle differential (used for four-wheel drive). According to the need of differential speed between wheels, any car has an inter-axle differential, usually an open differential, and some four-wheel drive cars will have a limited slip differential.
Whether it is two-wheel drive or four-wheel drive, whether it is front drive or rear drive, the open inter-wheel differential is generally used.