Patent ID: 7490594

Claim:
A super-turbocharger system, comprising: a turbocharger having a turbine coupled to a compressor by a turbo-shaft; a gear train coupled to the turbo-shaft; a fixed displacement gear motor operatively coupled to the gear train; a variable displacement pump/motor in fluid communication with the gear motor via a pressurized, closed hydraulic circuit having no sump; and wherein the variable displacement pump/motor delivers hydraulic power to the fixed displacement gear motor to drive the turbocharger through the gear train in a first mode; wherein the turbocharger drives the fixed displacement gear motor through the gear train to cause the fixed displacement gear motor to deliver hydraulic power to the variable displacement pump/motor in a second mode; wherein the gear train comprises planetary gear train having two or more planetary gears in a gear mesh relation to a gear connected to the turbo-shaft and in gear mesh relation to an outer ring gear, the gear train further including an output gear operatively connected to the two or more planetary gears and in a gear mesh relation to two equal size idler gears, the two idler gears in a gear mesh relation to a reduction gear; and wherein the reduction gear is in gear mesh relation with the pump/motor.