Determination of Geometrical Deviations of Large-Size Crankshafts with Limited Detection Possibilities Resulting from the Assumed Measuring Conditions

This article deals with the geometrical deviation measurements of crankshafts large marine engines fuelled conventional or alternative fuels, taking into account problem their deformability. Since detectability deviations a crankshaft supported by prisms depends largely on support conditions assumed and parameters method, study was carried out for two cases support. The first case concerned main journals seated set supports pre-positioned at an equal height. In contrast, second involved various heights. particular, research focused evaluating effect sensor location angle results contour profiles journal system. are developed procedures, application which in practical under workshop conditions, where there is no access to coordinate measuring machines, enables correct interpretation measurement evaluation state measured crankshaft.