Lubrication system calculation with GT-SUITE - Gamma Technologies

Operating conditionsContentsPROJECT:Lubrication SystemCalculationGeometry ofsystemOverview :Simulation modelMain features ofthe integratedmodelInput DataOperatingConditionsResultsConclusions andfuture workThe calculations have been conducted for the following operatingconditions:‣ “field condition”: oil temperature 90°C, nominal bearing clearances‣ “worst case” conditions 1: oil temperature 120° (pump map fromexperimental test), maximum bearing clearances‣ “worst case” conditions 2: maximum oil temperature 140°C (pump mapcalculated), maximum bearing clearancesBelow, the clearances used in the calculation for “field” and “worst” condition:Clearances Worst case Field conditionMain bearings [mm] 0.074 0.0525Con rod bearings [mm] 0.056 0.043Counterbalance shaft bearings [mm] 0.095 0.0775Tappets clearances [mm] 0.046+0.07*=0.116 0.03+0.07*=0.100Camshaft bearings (intake side) [mm] 0.06 0.045Camshaft bearing (exhaust side) [mm] 0.07 0.05*: increase due to cylinder-head temperature (assumed=100°C)Frankfurt - October 2010, 25th 18