Abstract
Bore polishing, associated mainly with turbocharged diesel internal combustion engines, results in reduced engine durability and increased oil consumption. This is a result of the formation of smooth regions on the cylinder liner exhibiting a surface finish of < 0.1 Jim Ra and the removal of the crosshoned machined pattern. In addition, metallographic examination enables the graphite morphology of the cast iron cylinder bore to be resolved. A number of engine tests have been developed for evaluating the bore polishing tendency of lubricant formulations but problems are faced in standardisation owing to changes in the design of test engines or engines becoming obsolete. This paper reviews the published literature on bore polishing with the intention of determining the requirements for the development of a cost effective bench test method to simulate the phenomenon. The published literature has revealed some contradiction and that the factors influencing bore polish are ill understood. An attempt is made to identify the major factors influencing bore polish such that they can be considered in the development of a bench test for evaluation of lubricant chemistry and component metallurgy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
