160 likes | 320 Views
Suspension Mechanisms. Group B Tedros Ghebretnsae Xinyan Li Zhen Yu Tang Ankit Panwar. Basic Concept of Suspension. Provide independent shock absorption to individual wheels. Deal with humps in road surface, enhancing ride comfort.
E N D
Suspension Mechanisms Group B Tedros Ghebretnsae Xinyan Li Zhen Yu Tang Ankit Panwar
Basic Concept of Suspension • Provide independent shock absorption to individual wheels. • Deal with humps in road surface, enhancing ride comfort. • Most suspensions are either fourbar linkages or slider cranks.
Camber Angle Two types of camber • Positive Camber • Negative Camber
Double Wishbone Suspension • Parallelogram system • The wheel spindles are supported by an upper and lower 'A' shaped arm • Equal & unequal length
Types of motion of the wheel • Spindles to travel vertically up and down during bump and rebound. • Side-to-side motion caused due to the geometry of the wishbones known as scrub • Toe angle (steer angle). • The camber angle, or lean angle.
Motion of Body Roll • Animation of the suspension during the body roll • Unequal length double wishbone type.
Vertical Displacement • Animation showing the up and down movement of the wheel.
Importance of Negative Camber Gain • Upper control arm is shorter than the lower one • As the wheel travels up it tips in, gaining negative camber • Allows the tire to generate the maximum possible cornering force • The length of the arms and the angles can be adjusted that means that they are not fixed
MacPherson Strut Suspension • The strut directly connects the steering knuckle to the chassis and acts as a link in the suspension • The steering link physically twists the strut and shock absorber and turns the wheel.
Trailing-arm suspension • Pairs of these become twin-trailing-arm allow the rear to swing up and down. • The two links are pivoted to the frame. • Link1 is the ground • Link3 is attached to the wheel assembly.