Abstract: 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 system coupled to the exhaust upstream of the turbine and coupled to the intake downstream of the compressor, the method including transferring heat via a heat exchanger from the exhaust gas recirculation system to downstream of the turbine.

Abstract: Exhaust gas recirculation systems and methods related to internal combustion engines are provided. In one embodiment, a system comprises an engine having at least a first cylinder group and a second cylinder group, with at least one cylinder in each cylinder group, an intake manifold having an inlet and a first outlet coupled to the first cylinder group and a second outlet coupled to the second cylinder group, an intake passage coupled to the intake manifold inlet, and first and second exhaust manifolds coupled to the first and second cylinder groups, respectively. An exhaust gas recirculation system is further coupled between the second exhaust manifold and the intake passage, and has a number of openings positioned within the intake passage, the number of openings equal to or greater than a number of cylinders having an intake event between successive exhaust events occurring in the second cylinder group.

Abstract: A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations.

Abstract: 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 system coupled to the exhaust upstream of the turbine and coupled to the intake downstream of the compressor, the method including transferring heat via a heat exchanger from the exhaust gas recirculation system to downstream of the turbine.