Surface and Shape Characteristics of Cylinder Bores 350088

THE subject is treated under the headings of cylinder-wall wear, measurement of surface finish, honing engine-cylinder bores, distortion of cylinders, and service-equipment influence on cylinder-block design. Special tools are illustrated and described, and charts showing the results attained are presented.
The contributory causes of cylinder wear are mentioned, the profilograph instrument for studying the various degrees of surface finish is described and the process of honing cylinder bores is stated. It is said that there is a direct relation of cylinder-wall finish and accuracy to engine performance.
Six essential features of service equipment are discussed. In conclusion, a method that keeps grit and chips out of the crankcase is described, together with tools and methods adapted to the service field.


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