Effect of Cylinder Head Bolt Preload on Piston Ring Conformability and Engine Blow

Abstract

The project work is concerned with the application of mathematical model, piston ring dynamics software and experimental investigation for the prediction of the piston ring conformability of the cylinder liner bore for the applied cylinder head bolt preload in four cylinder diesel engine for tractor application. The distortion of the cylinder liners of internal combustion engines has a significant effect on engine operation and performance like engine blow by and lubricating oil consumption. In order to control exhaust emissions, engine blow by and fuel consumption, piston ring conformability with distorted cylinder liner have a significant role. The effect of various parameters like engine speed, liner deformation due to assembly load and conformability of the rings have been analyzed for their effect on amount of engine blow by and cylinder bore deformation, the results are studied for different parameter and nature of deformation.