Abstract
A review of the existing methods describing the cylinder bore surface roughness was presented. An analysis of the surfaces of a large number of honed cylinders was performed. The relationship between conventional and proposed roughness parameters was studied using the principal components method as well as correlation and regression analysis. It follows from the analysis that one can fairly precisely describe a cylinder surface roughness profile using the following parameters: the emptiness coefficient Rp/Rt, the normalized rough core depth Rk/Rt, one of the height parameters (Rtm or R3y are proposed) and the mean distance among deep valleys. A wider description includes also the real oil capacity and one of the horizontal parameters.
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