The car modification Dictionary of unsprung mass

The unsprung mass is in fact a relatively sprung mass in terms of concept, the car can be divided into its unsprung mass and the sprung mass two parts. To the unsprung mass a definition, it means not help the quality of the suspension system supported by the elastic member, and generally include wheels, springs, shock absorbers, and other related components, etc., while the sprung mass natural vehicle rest quality, generally including the frame, power system, transmission, crew.
 
 The unsprung mass definition is a very troublesome thing, a lot of car modification technician also have only a vague concept that is not clear. Strict sense, relative body movement or with the the wheel runout parts should normalized for the spring under the quality. Naturally good like the wheels no contact with the body completely understood, but like springs, shock absorbers, independent suspension system in the connecting rod, non-independent torsion beam suspension system and four-wheel-type drive shaft, their characteristics are one end connected with the body or indirect through the sub-frame and the body is connected, while the other end with the wheel up and down. In the actual calculation, generally can take half of the quality of these components, as the unsprung mass.
 
 In the vehicles dynamic driving theory, a sprung mass and unsprung mass ratio of the data. For a car, we do not consider the factors of its suspension settings, simple from the sprung mass and unsprung mass, the ratio of the angle of departure, the greater the ratio, which means the car has a better ride comfort, smaller spring quality at the same time means that the suspension system has a better dynamic response capability as well as the vehicle's handling.

    We are a simple analysis from the unsprung mass factors found to alleviate the unsprung mass whether emphasis on smooth and comfortable luxury sedan, the emphasis on movement and limit manipulation supercar have can not be ignored. For keen modification of a friend, the unsprung mass transformation and upgrade of components (such as replacement wheels, modified shock absorbers, etc.) involves the same need to consider the quality of the change brought about by the change of the dynamic performance.