Patent ID: 7784274
Filing Date: 2010-08-31
Classification: F01N,F02B,Y02T

Abstract:
1. An internal combustion engine system comprising: an air breathing, fuel consuming internal combustion engine for producing a power output and having an air intake system and an exhaust system for receiving the products of combustion; a turbomachine having at least a turbine over which products of combustion pass and comprising a shaft and an impeller fixed to said shaft, said turbomachine comprising a bearing system between said shaft and said bearing housing, said turbomachine having a seal between said shaft and said housing and said impeller, said turbomachine further comprising a heat shield adjacent to the back wall of said housing; an exhaust aftertreatment system receiving the products of combustion from said turbine and having at least a catalyst; and a device periodically introducing hydrocarbons adjacent said turbomachine turbine and through said housing so that the heat of said turbine vaporizes the hydrocarbons whereby the products of combustion entering said exhaust aftertreatment system are substantially immediately available to interact with said catalyst and wherein a passage for said hydrocarbons extends through said bearing housing to an opening between said shaft seal and said turbine impeller.