Selection of Motor Oil Viscosity to Minimize Friction Losses in Heavy Duty Shell Bearings of Diesel Engines
A method is discussed to evaluate friction losses in heavy duty shell bearings lubricated with non-Newtonian motor oil. Rheological model of oil viscosity is offered that reflects viscosity dependence on oil temperature, pressure in thin film layer, shear and relaxation rates. Rheological model coefficients were derived based on tests. The article includes hydromechanical analysis of engine shell bearings.