Tribological Phenomena for Advanced Diesel Engines

"Military and commercial applications of future diesel engines will require areduction in the time consuming and costly experimental research, testing,and development currently being used. One component of this resolution will dependon using a numerical model of cylinder-kit dynamics, leading to reductions inengine friction and oil consumption. Understanding the design factors, which mustbe balanced to provide the good sealing of piston rings required for optimumperformance, along with maintaining low friction, low wear, and high reliability,requires utilization of a state of the art numerical model of cylinder-kit dynamics.The Cylinder Kit Analysis System for Engines (CASE System) is based on mathematicalmodels developed for cylinder-kit design studies. A complete 3-D finite elementmodel would offer the potential of modeling all of the dynamics and tribologicalfactors of interest. However, the high number of computer run times necessary tosolve the thousands of equations utilized by such a model would make it useless as adesign tool. The primary objective of the Phase I project will be to integratethe newly develop oil-film, wear and oil-consumption models (all 3-D) and determinethe feasibility of using this new set of models as a design tool. The CASE System (Cylinder Kit Analysis System for Engines) is a computerized systemof models that formalizes a structured approach for the analysis and design of pistons,piston rings and oth