Turbocharger lubrication and exhaust system

Abstract From the Canadian patent

A turbocharger system. One impeller of the turbocharger is driven by exhaust gas from an internal combustion engine, the other impeller functions as a pump to either compress air or to pump air in order to convey granular material. The impeller wheels are spaced and are mounted at the ends of a common shaft. The shaft is continuously lubricated, the spent lubricant being fed to an oil sump (crankcase). The specific improvement is a pressure bleed passageway between the chamber which receives engine exhaust pressure and the oil exhaust line. The bleed allows a portion of engine exhaust to pass to the sump exhaust line and assist oil flow to the sump by virtue of a pressure differential. This …