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Encyclopedia of Automotive Engineering

 Encyclopedia of Automotive Engineering 

Encyclopedia of Automotive Engineering



As early as over 400 years ago, the first helical compression springs (coil springs) were already used for wheel suspensions of a wagon body, and at the very latest since the invention of the wheel suspension strut (McPherson), they have represented the best spring design for the vertical dynamics of passenger cars. 

They took over suspension functions and because of their advantages regarding weight and installation space, replaced leaf springs almost completely. The necessary suspension arms to carry the    Soil springs may be regarded as a disadvantage, but their design enables exceptionally good road holding and safety.

Springs will be deformed elastically and during this process, they take up potential energy, which will be released when relieved. They will have to live up to such duties also during repeated and dynamic loads and Encyclopedia of Automotive Engineering,
Also published in the Encyclopedia of Automotive Engineering

considerable deforming processes. For this reason also, steel continues to be an ideal material to make springs. Over the past few years, resource-saving weight reduction has assumed growing importance. Assuming that the weight of a smaller middle class car was kept constant, the weight of a chassis support spring was reduced by about 55% since 1992 (Figure 1). Such weight reductions were brought about by higher loads, underpinned by optimized manufacturing technologies and new types of steel, without any reductions in robustness.


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