Abstract
A method is presented for the experimental and calculated estimation of the reliability of internal combustion engine liners exposed to the cavitational-erosive effect of liquid coolant. Combating corrosion of liners of high-and medium-speed engines has remains important because the life of liners with regard to cavitation erosion is approximately four times shorter than that with regard to the cylinder face wear and parts are rejected on the basis of the maximum allowable depth of erosion pits on the water-cooled surface. The procedure of estimating the durability of liners assumes the successive determination of their amplitude-frequency characteristics, the period of damage accumulation, and the highest erosion rate and then an estimation of the liner durability using the kinetic dependence of wear at the moment when the pit depth reaches 75% of the liner wall thickness. By the example of a 2Ch 8.5/11 engine, a satisfactory correlation is demonstrated between experimental data and the results of engine service.
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