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AssigneeCummins Engine Company, Inc.
InventorsThomas L. McKinley, Philip M. Dimpelfeld, John M. Mulloy
Estimating the term…
An exhaust gas recirculation (EGR) enhancement system for a turbocharged internal combustion engine includes a throttle valve arranged in the exhaust duct of the engine, downstream of the EGR system. The throttle valve is controlled in response to engine load and engine speed to selectively provide back pressure upstream of the throttle valve to selectively drive an EGR exhaust flow through an EGR duct to the intake manifold. An embodiment of the EGR system includes a cooler that lowers the temperature of the EGR exhaust flow to provide better reductions in nitric oxide emissions. The turbine is equipped to allow excess pressure to be released through a wastegate duct arranged in fluid parallel with the exhaust turbine, thereby allowing for higher power and higher speeds.
An internal combustion engine having an intake duct, an exhaust duct, and an exhaust gas recirculation system comprising:
An exhaust gas recirculation system for an internal combustion engine having an intake duct, an exhaust duct, and a turbocharger with a turbine located in the exhaust duct, the turbocharger driving a compressor located in the intake for charging air in the intake duct, the exhaust gas recirculation system comprising:
Dependencies are inferred from the claim text.