Modeling for Friction of Four Stroke Four Cylinder In-Line Petrol Engine
Journal Title: Tribology in Industry - Year 2013, Vol 35, Issue 3
Abstract
A four stroke four cylinder in-line petrol engine is modeled to estimate various performance parameters. The solution is based on tribology and dynamics principle. The detailed parameters related to engine friction and lubrication are computed numerically for the 1-3-4-2 engine firing order. The numerical method is based on finite difference method that solves coupled Reynolds Equation and Energy equation. Output includes the film thickness, friction force, friction power loss and temperature rise in ring liner conjunction in all four cylinders. Transient regime of ring liner lubrication is addressed while the same changes from hydrodynamic to mixed in an engine cycle. Momentary cessation near top and bottom dead center that causes boundary interaction is analyzed through asperity contact. The non-Newtonian behavior of lubricant due to film pressure and temperature is addresses using viscosity-pressure-temperature inter relationship.
Authors and Affiliations
P. C. Mishra
Keywords
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