Patent ID: 6205787
Filing Date: 2001-03-27
Classification: F02B,Y02T

Abstract:
A charge air system connected with the charge air intake for a four-cycle engine, comprising a charge air compressor capable of supplying the internal combustion engine's charge air requirements only up to about 2500 rpm, said charge air compressor having an inlet and an outlet, an electric motor connected to drive said charge air compressor, a first charge air conduit connected with the outlet of the charge air compressor, a turbocharger having an exhaust gas driven turbine connected with the exhaust gas from the four-cycle engine and a turbocharger compressor having an air inlet and a compressed air outlet, a second charge air conduit connected with the compressed air outlet of said turbocharger compressor, a junction for said first and second charge air conduits, said junction being connected with said charge air intake, a charge air check valve located adjacent said junction for one of said first and second charge air conduits, and a control for said electric motor, said control energizing and maintaining said electric motor at a predetermined minimum speed after the internal combustion engine is started and being responsive to, at least, an engine acceleration demand signal.