Author : Liang Liu
Release : 2005
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Modeling the Performance of the Piston Ring-pack with Consideration of Non-axisymmetric Characteristics of the Power Cylinder System in Internal Combustion Engines - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Modeling the Performance of the Piston Ring-pack with Consideration of Non-axisymmetric Characteristics of the Power Cylinder System in Internal Combustion Engines write by Liang Liu. This book was released on 2005. Modeling the Performance of the Piston Ring-pack with Consideration of Non-axisymmetric Characteristics of the Power Cylinder System in Internal Combustion Engines available in PDF, EPUB and Kindle. (Cont.) This model predicts the inter-ring gas pressure and 3-D displacements of the three rings at various circumferential locations. Model results show significant variations of the dynamic behavior along ring circumference. In the ring-pack lubrication model, an improved flow continuity algorithm is implemented in the ring/liner hydrodynamic lubrication, and proves to be very practicable. By coupling the ring/liner lubrication with the in-plane structural response of the ring, the lubrication along the entire ring circumference can be calculated. Model results show significant variations of lubrication along the circumference due to the non-axisymmetric characteristics of the power cylinder system. Bore distortion was found to have profound effects on oil transport along the liner. Particularly, it stimulates the occurrence of oil up-scraping by the top ring during compression stroke. Because the oil evaporation on the liner affects the liner oil film thickness, a sub-model for liner evaporation with consideration of multi-species oil is incorporated with the lubrication model. With consideration of oil transport along the liner, the prediction of evaporation is more precise. The combination of these models is a complete package for piston ring-pack analysis. It is computationally robust and efficient, and thus has appreciable practical value.