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AssigneeCummins Engine Company, Inc.
InventorsTodd A. Sheridan, A. S. Ghuman, Angie R. May, Rod Radovanovic, John M. Janssen, Peter V. Woon
Estimating the term…
EGR induction supercharged or turbocharged internal combustion engine having EGR and EGR cooling in which EGR cooling is obtained through jacket water coolers and/or an air-to-air aftercooler. EGR induction is obtained via either low pressure (ambient) induction to the system intake, or via venturi or passive pump induction into the pressurized intake. Bypassing of the EGR cooler is used to reduce condensation and fouling in the EGR cooler and to provide warmer air to reduce light load and cold ambient hydrocarbon production. A passive or catalyzed particulate trap and crankshaft driven supercharger boosting system are provided to address engine response deterioration and particulate increase problems associated with EGR.
An exhaust gas recirculation system for an internal combustion engine by which a portion of exhaust gases produced by the engine are recirculated from an exhaust line of the engine into an intake line of the engine, said exhaust gas recirculation system comprising an exhaust gas recirculation line connecting the exhaust line of the engine to the intake line of the engine, cooler means for cooling the recirculated portion of the exhaust gases, a bypass line extending from said recirculation line in bypassing relationship to said cooler means, and valve means for directing the recirculated portion of the exhaust gases to said intake line via said bypass line under low engine temperature operating conditions and under low engine load operating conditions, and via said cooler means under other engine operating conditions;
Dependencies are inferred from the claim text.