Abstract: A recycling loop configuration of an exhaust gas aftertreatment system decreases a level of system-out NOx emissions of an engine. An apparatus including the configuration has an exhaust gas recycling system having a closed gas recycling loop system configured to heat gas circulating within the loop, and a blower for circulating gas within the loop. A method for operating the engine includes preheating at least one aftertreatment component of an exhaust gas aftertreatment system of the engine by exposing the component to heated gas circulating in a closed gas recycling loop.

Abstract: A system and method of exhaust gas recirculation (EGR) in an internal combustion engine are provided. The EGR system includes a first EGR flow path and a second EGR flow path independent of the first EGR flow path that are each configured to recirculate high pressure exhaust from the exhaust system back to the engine intake system. The system includes a controller in operable communication with the EGR system configured to selectively control an amount of EGR flow through at least one of the first and second EGR flow paths.

Abstract: A system and method of exhaust gas recirculation (EGR) in an internal combustion engine are provided. The EGR system includes a first EGR flow path and a second EGR flow path independent of the first EGR flow path that are each configured to recirculate high pressure exhaust from the exhaust system back to the engine intake system. The system includes a controller in operable communication with the EGR system configured to selectively control an amount of EGR flow through at least one of the first and second EGR flow paths.

Abstract: Systems, devices, and methods are disclosed that during cylinder deactivation, including skipfire, at low engines speeds and low engine loads maintain adequate oil pressure of valvetrain components or hardware required for CDA and/or skipfire operation.

Abstract: A recycling loop configuration of an exhaust gas aftertreatment system decreases a level of system-out NOx emissions of an engine. An apparatus including the configuration has an exhaust gas recycling system having a closed gas recycling loop system configured to heat gas circulating within the loop, and a blower for circulating gas within the loop. A method for operating the engine includes preheating at least one aftertreatment component of an exhaust gas aftertreatment system of the engine by exposing the component to heated gas circulating in a closed gas recycling loop.

Abstract: A system and method for mechanically timed cylinder deactivation includes an inner passage in the camshaft that supplies fluid for deactivating one or more valve opening mechanisms associated with the cylinders of an internal combustion engine.

Abstract: Systems, methods and apparatus for connection of a multi-stage turbocharger to a heat exchanger are disclosed. The multi-stage turbocharger includes at least first and second compressors with respective first and second outlets. An air intake system is provided that connects each of the first and second compressor outlets to a common inlet of a heat exchanger. The air intake system includes a flow transition segment connected to the first and second compressor outlets, a diffuser segment, and a flow delivery segment connected to the inlet of the heat exchanger.

Abstract: Systems, methods and apparatus for connection of a multi-stage turbocharger to a heat exchanger are disclosed. The multi-stage turbocharger includes at least first and second compressors with respective first and second outlets. A plumbing arrangement is provided that connects each of the first and second compressor outlets to a common inlet of a heat exchanger. The plumbing arrangement includes a flow transition segment connected to the first and second compressor outlets, a diffuser segment, and a flow delivery segment connected to the inlet of the heat exchanger.