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Experimental And Theoretical Investigations Of Lube Oil Performance And Engine Friction, William Fredrick Rohr
Experimental And Theoretical Investigations Of Lube Oil Performance And Engine Friction, William Fredrick Rohr
Doctoral Dissertations
The feasibility of using a motored small, single-cylinder 517 cc Hatz 1D50 diesel engine to evaluate lube oil performance and engine friction at conditions typical for a fired engine is investigated in the present study. In addition a commercial engine modeling software, AVL Excite Power Unit, is used to predict the effects of lube oil formulations on the engine friction of the same engine. The motored engine can be operated with and without compression and with and without the engine oil pump. Lube oil performance is evaluated for 19 different lube oils by using either instantaneous motoring torque (motoring torque …