a turbocharger component cooling system employs an ejector using energizing gas from the turbocharger system to draw cooling fluid through a plenum around the component to be cooled into the secondary inlet of the ejector and dumping the combined energizing and cooling gas flows into a low pressure dump . energizing gas is drawn from the high pressure side of the compressor or turbine flows in the turbocharger and returned to the low pressure side in the same flow .