Patent ID: 8141359
Filing Date: 2012-03-27
Classification: F01N,F02B,F02M,Y02T

Abstract:
1. A method of operating an internal combustion engine having an intake, an exhaust, and a turbocharger including a turbine and a compressor, the compressor coupled to the intake and the turbine coupled to the exhaust, the engine further having an exhaust gas recirculation (EGR) system coupled to the exhaust upstream of the turbine and coupled to the intake downstream of the compressor, the method comprising: directing EGR gas from the exhaust upstream of the turbine through an air-to-air heat exchanger; directing exhaust gas downstream of the turbine through the heat exchanger for heat transfer with the EGR gas; and heating the exhaust gas via the heat exchanger upstream of an emission control device for raising a temperature of the emission control device.