Abstract: Computer implemented systems and methods are disclosed for importing data from electronic data files. In accordance with some embodiments, a file format is assigned to a source electronic data files by a data importation system. The data importation system may further identify a file type identifier associated with the source electronic data file and map the source electronic data file to a transformation template. The data importation system may further store the file format, file type identifier, and an indication of the transformation template as a file type profile associated with the source electronic data file in a database.

Abstract: A method for injection reductant into an exhaust gas and for evaporating and decomposing the reductant at an elevated temperature includes providing an exhaust pipe having an interior surface and disposing the pipe in fluid communication with and upstream of a catalyst. The method includes the steps of disposing an internal cone within the pipe generally parallel to the pipe, mounting an injector to the exterior of the pipe in fluid communication with the cone, injecting the reductant into the cone, and directing the exhaust gas in a passage between the interior surface of the pipe and the cone. The exhaust gas is directed within the cone. The flow of exhaust gas has an elevated temperature compared to an ambient. A further step includes creating a drag force on the injected reductant to increase travel time of the injected reductant from the injector to the catalyst.

Abstract: A method for injection of a liquid reductant (17) into an exhaust gas (30) and for evaporating and decomposing the liquid reductant at an elevated temperature includes providing an exhaust pipe (12) having an interior surface (18) and disposing the exhaust pipe in fluid communication with and upstream of a catalyst (38). The method also includes the steps of disposing an internal cone (20) within the exhaust pipe (12) generally parallel to the exhaust pipe, mounting an injector (14) to the exterior of the exhaust pipe in fluid communication with the internal cone, injecting the liquid reductant into the internal cone, and directing the exhaust gas (30) in a passage between the interior surface (18) of the exhaust pipe and the internal cone. The exhaust gas (30) is also directed within the internal cone (20). The flow of exhaust gas (30) has an elevated temperature compared to an ambient.

Abstract: Engine systems and methods for accomplishing regeneration of a NOx adsorber (28) using in-cylinder post-injection in a way that creates a lean-rich transition (FIG. 3) for regenerating the NOx adsorber while attenuating engine torque output fluctuations during the transition without the necessity of using torque sensing to attenuate the fluctuations.

Abstract: During regeneration of a DPF (22), cylinders of a diesel engine (12) are fueled by main injections and post-injections. This creates exhaust having sufficiently high temperature and suitable constituent content to cause particulates trapped in the DPF to burn off. However, residual unburnt fuel will create an air-fuel mixture that is sufficiently homogeneous to begin combusting during a subsequent compression stroke. The invention quenches incipient combustion of the mixture during the compression stroke by injecting fuel into the respective cylinder before the next main injection of fuel.

Abstract: De-sulfurizing a NOx adsorber catalyst (48) without significantly increasing the temperature of exhaust gases leaving the engine exhaust manifold (42) by using a diesel oxidation catalyst (46) between the exhaust manifold and the NOx adsorber catalyst to elevate exhaust gas temperature entering the NOx adsorber catalyst to suitable de-sulfurizing temperature through control of certain aspects of engine operation (24, 28, 52).

Abstract: An engine (20) and an engine control strategy (FIGS. 2 and 3) for lean-to-rich transitions, such transitions being useful for various purposes, one of which is purging, or regenerating, a NOx adsorber (36) in the engine exhaust system.

Abstract: Engine systems and methods for accomplishing regeneration of a NOx adsorber (28) using in-cylinder post-injection in a way that creates a lean-rich transition (FIG. 3) for regenerating the NOx adsorber while attenuating engine torque output fluctuations during the transition without the necessity of using torque sensing to attenuate the fluctuations.

Abstract: An engine (20) and an engine control strategy (FIGS. 2 and 3) for lean-to-rich transitions, such transitions being useful for various purposes, one of which is purging, or regenerating, a NOx adsorber (36) in the engine exhaust system.