Exhaust Gas Recirculation (EGR) System for Internal Combustion Engines

摘要

An exhaust gas recirculation (EGR) system for marine internal combustion engines and other variants is provided. An internal combustion engine is coupled to an electric power generator. An exhaust aftertreatment system connected to the engine includes an exhaust gas recirculation system with an exhaust gas recirculation system having one or more cooling features to reduce an external temperature of the EGR system.

主权项

1. An apparatus, comprising:
an exhaust manifold structured to be connected to a marine engine; an intake system structured to be connected to the marine engine; and an exhaust gas recirculation (EGR) system, the EGR system comprising:
an inlet structured to receive an exhaust gas from the exhaust manifold;an outlet structured to provide the exhaust gas to the intake system; anda housing defining:
a plurality of exhaust flow passages in fluid communication with the inlet and the outlet;an outer cooling passage portion around the plurality of exhaust flow passages; andat least one inner cooling passage portion between the plurality of exhaust flow passages,wherein a cooling fluid circulates through the outer cooling passage portion to reduce an outer temperature of the EGR system while reducing a temperature of the exhaust gas in the plurality of exhaust flow passages.