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Shock absorbers are an important part of car suspension designed to increase comfort, stability and overall safety. The shock absorber, produced with precision and engineering skills, has many important features. The most common type is a hydraulic shock absorber, which usually includes a piston, a cylinder, and an oil-filled chamber.
Cars that have cockpit adjustable ride height generally cannot have MacPherson struts because of the camber changes that are an unavoidable part of the design. Ride suffers because the shock absorber has almost the same vertical motion as the wheel, so there is relatively little leverage to break the stiction in the seals. A standard single ...
The connection between the hub carrier and the shock absorber base was made rigid, making the spring unit into a strut and also controlling the camber angle. Using the drive shaft itself to control the rear track meant that the shaft could be of fixed length, avoiding the need for a sliding spline joint and its stiction problems.
Toyota introduced switchable shock absorbers in the 1983 Soarer. [17] Delphi currently sells shock absorbers filled with a magneto-rheological fluid, whose viscosity can be changed electromagnetically — thereby giving variable control without switching valves, which is faster and thus more effective.
Vertical shackles, as on a more typical fore and aft leaf spring, would have failed to provide lateral control. Some variants used a plain pivot at one end of the axle and a near-vertical shackle at the other. The wheel hub assemblies (sometimes known as steering knuckles) carry steering arms, the ends of which are linked by a tie or track rod.
The shock absorber and coil spring mount to the wishbones to control vertical movement. Double wishbone designs allow the engineer to carefully control the motion of the wheel throughout suspension travel, controlling such parameters as camber angle , caster angle , toe pattern, roll center height, scrub radius , scuff ( mechanical abrasion ...