You,Familiar,with,the,Suspensi car Do You Familiar with the Suspension System?
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Peoplewho travel on underground trains wish that those vehicles relied onsuspension too, but they don't and that's why the ride is so harsh. Actuallyit's harsh because underground trains have no lateral suspension to speak of.So as the rails deviate side-to-side slightly, so does the entire train, andit's passengers. In a car, the rubber in your tyre helps with this littleproblem, while all the other suspension parts do the rest. In it's most basic form, suspensionconsists of two basic components: SpringsThese come in three types. They are coilsprings, torsion bars and leaf springs. Coil springs are what most people arefamiliar with, and are actually coiled torsion bars. Leaf springs are what youwould find on most American cars up to about 1985 and almost all heavy dutyvehicles. They look like layers of metal connected to the axle. The layers arecalled leaves, hence leaf-spring. The torsion bar on its own is a bizarrelittle contraption which gives coiled-spring-like performance based on thetwisting properties of a steel bar. It's used in the suspension of VW Beetlesand Karmann Ghias, air-cooled Porsches (356 and 911 until 1989 when they wentto springs), and the rear suspension of Peugeot 205s amongst other cars.Instead of having a coiled spring, the axle is attached to one end of a steelshaft. The other end is slotted into a tube and held there by splines. As thesuspension moves, it twists the shaft along it's length, which in turn resist.Now image that same shaft but instead of being straight, it's coiled up. As youpress on the top of the coil, you're actually inducing a twisting in the shaft,all the way down the coil. I know it's hard to visualise, but believe me,that's what is happening. There's a whole section further down the pagespecifically on torsion bars and progressive springs. Shock absorbersThese dampen the vertical motion induced bydriving your car along a rough surface and so should technically be referred toby their proper name - dampers. If your car only had springs, it would boat andwallow along the road until you got physically sick and had to get out. Itwould be a travelling deathtrap until the incessant vibration caused it to fallapart. Shock absorbers (dampers) perform twofunctions. As mentioned above, they absorb any larger-than-average bumps in theroad so that the upward velocity of the wheel over the bump isn't transmittedto the car chassis. But secondly, they keep the suspension at as full a travelas possible for the given road conditions - they keep your wheels planted onthe road. You want more technical terms? Technicallythey are velocity-sensitive hydraulic damping devices - in other words, thefaster they move, the more resistance there is to that movement. They work inconjunction with the springs. The spring allows the wheel to follow the road,moving up and down. The kinetic energy of that moving unsprung mass istransmitted to the damper where it is dissipated. The damper does this byforcing gas or oil through a constriction valve (a small hole). Adjustableshock absorbers allow you to change the size of this constriction, and thuscontrol the rate of damping. The smaller the constriction, the stiffer thesuspension. Phew!....and you thought they just leaked oil didn't you?Find out more about China lower arm manufacturer by visit lemdor.com.
You,Familiar,with,the,Suspensi