.AixLib.Fluid.Movers.Compressors.BaseClasses.PartialModularCompressors.EngineEfficiency .AixLib.Fluid.Movers.Compressors.BaseClasses.PartialModularCompressors.EngineEfficiencymodel EngineEfficiency = Utilities.EngineEfficiency.SpecifiedEfficiencies.ConstantEfficiency;