Unit05CarSuspension.pptVIP

Unit 5 Car Suspension;Unit 5 Car Suspension;In such a situation, the wheels can lose contact with the road completely[1]. Then, under the downward force of gravity, the wheels can slam back into the road surface. ;; These systems include: (1)??The frame—structural, load-carrying component that supports the cars engine and body, which are in turn supported by the suspension. (2)??The suspension system—setup that supports weight, absorbs and dampens shock and helps maintain tire contact.;(3)??The steering system—mechanism that enables the driver to guide and direct the vehicle. (4)??The tires and wheels—components that make vehicle motion possible by way of grip and/or friction with the road. So the suspension is just one of the major systems in any vehicle. ;; Springs. Todays springing systems are based on one of four basic designs: Coil springs—This is the most common type of spring and is, in essence, a heavy-duty torsion bar coiled around an axis. Coil springs compress and expand to absorb the motion of the wheels. ; Leaf springs—This type of spring consists of several layers of metal (called leaves) bound together to act as a single unit. Torsion bars—Torsion bars use the twisting properties of a steel bar to provide coil-spring-like performance. This is how they work: one end of a bar is anchored to the vehicle frame. ;The other end is attached to a wishbone, which acts like a lever that moves perpendicular to the torsion bar. When the wheel hits a bump, vertical motion is transferred to the wishbone and then, through the levering action, to the torsion bar. The torsion bar then twists along its axis to provide the spring force. ;; Air springs—Air springs, which consist of a cylindrical chamber of air positioned between the wheel and the cars body, use the compressive qualities of air to absorb wheel vibrations. Based on where springs are located on a car—i.e., between the wheels and the frame—engineers often find it convenient to talk ab