EFFECT OF DOWEL PIN ON THE SHRINKAGE PRESSURE OF BUILT-UP CRANK SHAFT

Abstract

Mathematical and experimental investigations were carried out to determine how much decrease in the total shrinkage pressure on the shrinkage surface of the built-up crank shaft is caused by boring dowel pin holes and driving-in pins. And it is found that the decrease in the shrinkage pressure is not so remarkable as it is believed by certain famous german engine makers. The view, that the pin is not only useless, but also injurious, and the boring pin holes has rather the effect to decrease considerably the shrinkage pressure, is quite disproved.