Principally speaking, automotive suspension system is a part of the car chassis composed of wheels and tires, set of brakes, springs, shock absorbers and fixtures (such as swivels, hubs, bushes, etc) and is somehow associated with all the lower car components. In addition to provide comfort and tranquility for those aboard, this system helps the car sustainability during motion and plays a major role in its balance and adhesiveness. Usually, the modern cars need two suspension systems one for the front and the other for the back axis. For most of the front differential sedans (front wheel drive) the front suspension system is designed and made in independent manner and the back suspension system on dependent or semi-independent manner, while for the back or four wheel drive cars, the dependent suspension system used to be applied in two axis in the past and now almost all of them use independent suspension system in all four wheels. From amongst the independent suspension systems include Mac Pherson Strut, Double A-arms, De Dion, single hinge pendulum, double hinge pendulum, simple double branch lever, hydrostatic and hydro-pneumatic (Xantia vehicle suspension system). On the other hand, brake is a mechanical tool prevents a moving object from motion and decreases its speed or stops it. In sedans the friction between compressing surfaces is used to convert the vehicle kinetic energy into heat and eventually stop the car. However, it has been tried in today’s modern cars (especially of electrical and hybrid types), to convert car’s kinetic energy into electrical energy and reserved in batteries. During the past decades the brake of light and heavy vehicles was in drum brake manner for each wheel, while considering the higher efficiency of the disc brakes, the latter is used in all vehicles. The main elements of brake include drum, wheel cylinder, hardware and springs, adjuster, and brake shoe and the finally that like other vehicle elements and systems which have been gradually developed and emerged with better performance and durability, this system also has been improved and several technologies such as ABS, EBA, EBD, etc have been added to the same.

Front Knuckle Arm
Control Arm Bushing
Front rear Shock Absorber Module
Pressurized Shock Absorber
Oil-Type Shock Absorber

Handbrake Cable
Brake Pad
Brake shoe
Brake disc
Rear Hub Drum

Anti Roll Bar
Front Spindle Axle Plate
Rear Spindle Axle Plate