Turbocharger system for an internal combustion engine

Claim 1

A turbocharger and internal combustion engine assembly including, an internal combustion engine, having a radiator and an engine driven fan therefor, a first turbocharger having a first turbine and a first compressor rotatably coupled thereto, the first turbine coupled to the exhaust gas energy output of the engine, a second turbocharger having a second turbine and a fan rotatably coupled thereto, the output of the first compressor driving the second turbine, the output of the second turbine feeding to a first flow path in a first air-to-air intercooler and through said first flow path to a first flow path in a second air-to-air intercooler, through the latter first flow path, and to the intake manifold of the engine, said fan of the second turbocharger discharging to ambient, the input to said fan drawing ambient air through the second flow path in said first intercooler, the input to the latter flow path opening to ambient, a second intercooler, said second intercooler positioned adjacent the radiator fan cooling air path of the engine, air in the radiator fan cooling path defining the second flow path of the second air-to-air intercooler the cooling air for the radiator defined by ram air or by air drawn by the fan.