Turbo compound internal combustion engine

Details Turbo compound internal combustion engine Turbo compound internal combustion engine

F - Mech Eng,Light,Heat,Weapons

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F02B 37/12 (2006.01) F02B 37/00 (2006.01) F02B 37/22 (2006.01)

Patent

CA 1255508

ABSTRACT OF THE DISCLOSURE A turbo-compound internal combustion engine comprised of an internal combustion engine having an exhaust manifold, and a recovery turbine affixed to such exhaust manifold for extracting energy from exhaust air emitted through the exhaust manifold. The improvement resides in the recovery turbine, whereby such turbine is comprised of a radial impeller surrounded by a scroll casing, wherein such scroll casing contains within itself a spirally formed scroll passage, the scroll passage itself containing a partitioning plate which divides the scroll passage into two scroll sub-passages. Valve means, and means for electronically controlling said valve means, is further provided within the scroll passage to close one of the scroll sub-passages at low flow rates of exhaust air, thereby increasing the pressure ratio within the recovery turbine and increasing the efficiency of such turbine. It is further contemplated a turbo-supercharger may first be connected to the exhaust manifold whereby the recovery tur- bine receives exhaust air from said turbo-supercharger, rather than directly from the exhaust manifold.

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