Importance

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Abstract

A turbocharged internal combustion engine is provided with a diverter valve arranged to divert part of the exhaust gas flow along a conduit for introduction into a turbine region. Exhaust gases flow from the conduit, through appropriate galleries in the turbocharger casing, into internal passages formed in at least some of the stator blades. From the internal passages, the exhaust gas passes through holes positioned near the downstream ends of the convex surfaces of the stator blades. In this manner, the diverted gas is introduced into the comparatively lower pressure of the turbine region thereby enabling the diverted exhaust gas to rejoin the mainstream exhaust gas and to do useful work in driving the rotor blades while, at the same time, avoiding choking the stator blades.

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First Claim