International Engine Intellectual Property Company, LLC

Gregory J Saele

Robert Lawrence Rowells

A method for an internal combustion engine includes the steps of collecting exhaust gas in a volume () and flowing exhaust gas out of the volume in a first and a second portions (). The first portion forms a tailpipe gas stream (), and the second portion forms an EGR gas stream (). The tailpipe gas stream goes through a turbine (), and is heated in a heat exchanger (). The heat exchanger transfers thermal energy out of the EGR gas stream () to heat the tailpipe gas stream. The EGR gas stream is recirculated into an intake of the internal combustion engine ().

Heat exchanger method and apparatus

A method for an internal combustion engine includes the steps of collecting exhaust gas in a volume () and flowing exhaust gas out of the volume in a first and a second portions (). The first portion forms a tailpipe gas stream (), and the second portion forms an EGR gas stream (). The tailpipe gas stream goes through a turbine (). The EGR gas stream is catalyzed by an oxidizer coating in a heat exchanger, and thermal energy is transferred from the EGR gas stream to the tailpipe stream in the heat exchanger ().

Oxidation catalyst coating in a heat exchanger

In one embodiment, a cylinder head () and a runnerless intake manifold () are assembled together and cooperatively define an air manifold () and a fuel manifold () for supplying air and fuel respectively to engine cylinders in an engine block to which cylinder head () is fastened. In another embodiment, the air manifold is the same, but the fuel manifold () is defined by a bore () and holes () in the intake manifold ().

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Itasca, IL, United States of America

Gregory J Saele