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Learn how to replace the shock absorbers on a car with expert automotive tips in
this free online auto repair and car maintenance video clip. Expert: Nathan McCullough Bio: Nathan McCullough graduated from Nashville Auto-Diesel College with a GPA of 3.5. He has managed several automotive facilities over the last eight years. Filmmaker: Robert Rogers |
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Video Brought To You From Youtube & expertvillage |
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Vehicle suspension In a vehicle, it reduces the effect of traveling over rough ground, leading to improved ride quality, and increase in comfort due to substantially reduced amplitude of disturbances. Without shock absorbers, the vehicle would have a bouncing ride, as energy is stored in the spring and then released to the vehicle, possibly exceeding the allowed range of suspension movement. Control of excessive suspension movement without shock absorption requires stiffer (higher rate) springs, which would in turn give a harsh ride. Shock absorbers allow the use of soft (lower rate) springs while controlling the rate of suspension movement in response to bumps. They also, along with hysteresis in the tire itself, damp the motion of the unsprung weight up and down on the springiness of the tire. Since the tire is not as soft as the springs, effective wheel bounce damping may require stiffer shocks than would be ideal for the vehicle motion alone. Spring-based shock absorbers commonly use coil springs or leaf springs, though torsion bars can be used in torsional shocks as well. Ideal springs alone, however, are not shock absorbers as springs only store and do not dissipate or absorb energy. Vehicles typically employ both springs or torsion bars as well as hydraulic shock absorbers. In this combination, "shock absorber" is reserved specifically for the hydraulic piston that absorbs and dissipates vibration. From Wikipedia, the free encyclopedia |
Shock absorber with internal reservoir. The components are: A - rod, B - the piston with seals, C - the cylinder, D - oil reservoir, E - floating piston, F - air chamber. |