Abstract: The present disclosure describes methods for evaluating NOx conversion efficiency of a close coupled SCR unit of an EAS including the close coupled SCR unit and a downstream SCR unit. The determined NOx conversion efficiency of the close coupled SCR unit is used to diagnose the close coupled SCR unit and or EAS and to control operation parameters of the EAS and/or internal combustion engine operably connected to the EAS.

Abstract: A lean-burn internal combustion engine and an exhaust aftertreatment system having an oxidation catalyst are described. A controller determines a fueling rate and a mass flowrate of the exhaust gas feedstream. An inlet temperature of the exhaust gas feedstream upstream of the oxidation catalyst is determined via the first temperature sensor, and an in-use outlet temperature of the exhaust gas feedstream is determined downstream of the oxidation catalyst via the second temperature sensor. An expected outlet temperature from the oxidation catalyst is determined based upon the inlet temperature, the fueling rate, and the mass flowrate of the exhaust gas feedstream. The oxidation catalyst is evaluated based upon the expected outlet temperature and the in-use outlet temperature.

Abstract: The present disclosure describes methods for evaluating quality of DEF dosed to an EAS including a close coupled SCR unit a downstream SCR unit. A NOx conversion efficiency of the close coupled SCR unit and a NOx conversion efficiency of the downstream SCR unit are used to evaluate quality of DEF. In some embodiments, the NOx conversion efficiency of close coupled SCR unit is used to evaluate quality of DEF. Operation of an EAS using the results of the evaluation of quality of DEF are described.

Abstract: A method for purchasing an item using a mobile device is provided. The method includes but is not limited to inputting identification information into the mobile device which identifies the item for purchase and generating an order for the item identified by the identification information. The method also includes but is not limited to displaying on a display of the mobile device an optical machine-readable representation of the order.

Abstract: A system, in certain embodiments, includes a joint and an energy harvesting system. The energy harvesting system includes an energy conversion system configured to convert kinetic energy from movement of the joint into electrical energy.

Abstract: The disclosed embodiments include a ball valve seal having a main body and a seal finger extending from the main body, wherein the seal finger is configured to extend from the main body and contact and flex against an outer surface of a ball body of the ball valve seal when the ball valve is assembled.

Abstract: A system, in certain embodiments, includes a joint and an energy harvesting system. The energy harvesting system includes an energy conversion system configured to convert kinetic energy from movement of the joint into electrical energy.

Abstract: A system, in certain embodiments, includes a joint and an energy harvesting system. The energy harvesting system includes an energy conversion system configured to convert kinetic energy from movement of the joint into electrical energy.

Abstract: The disclosed embodiments include a ball valve seal having a main body and a seal finger extending from the main body, wherein the seal finger is configured to extend from the main body and contact and flex against an outer surface of a ball body of the ball valve seal when the ball valve is assembled.

Abstract: Embodiments of the present disclosure are directed toward a system including a trochoidal rotary device. The trochoidal rotary device includes a housing comprising an inner surface, a rotor having at least one bearing recess, a shaft eccentrically mounted to the rotor, wherein the shaft and the rotor are integrated with one another, and at least one bearing disposed between the bearing recess of the rotor and the inner surface of the hollow housing, wherein at least one of the inner surface of the hollow housing, the bearing recess of the rotor, and the at least one bearing comprise a bearing interface comprises a surface treatment.

Abstract: A system, in certain embodiments, includes a joint and an energy harvesting system. The energy harvesting system includes an energy conversion system configured to convert kinetic energy from movement of the joint into electrical energy.

Abstract: A system, in certain embodiments, includes a joint and an energy harvesting system. The energy harvesting system includes an energy conversion system configured to convert kinetic energy from movement of the joint into electrical energy.

Abstract: Embodiments of the present disclosure are directed toward a system including a trochoidal rotary device. The trochoidal rotary device includes a housing comprising an inner surface, a rotor having at least one bearing recess, a shaft eccentrically mounted to the rotor, wherein the shaft and the rotor are integrated with one another, and at least one bearing disposed between the bearing recess of the rotor and the inner surface of the hollow housing, wherein at least one of the inner surface of the hollow housing, the bearing recess of the rotor, and the at least one bearing comprise a bearing interface comprises a surface treatment.

Abstract: A system, in certain embodiments, includes a joint and an energy harvesting system. The energy harvesting system includes an energy conversion system configured to convert kinetic energy from movement of the joint into electrical energy.

Abstract: Systems and methods determine the level, density, and/or temperature of a fluid based on the fluorescence of a material within an optical waveguide slab at least partially immersed in the fluid.

Abstract: A method for purchasing an item using a mobile device is provided. The method includes but is not limited to inputting identification information into the mobile device which identifies the item for purchase and generating an order for the item identified by the identification information. The method also includes but is not limited to displaying on a display of the mobile device an optical machine-readable representation of the order.

Abstract: Methods and systems detect the presence of a fluid, such as water, based on a reflection of optical energy from the fluid. Methods and systems also determine the concentration of a constituent element in a mixture based on a reflection of optical energy from the mixture.

Abstract: Methods and systems are provided for determining the density and/or temperature of a fluid based on the manner in which optical energy is affected as the optical energy propagates across a gap between opposing end faces of optical waveguides, or the manner in which the optical energy is reflected from interfaces of optical waveguides and the fluid.

Abstract: Systems for providing optical energy comprise an LED, a detector of optical energy, such as a photodiode, that measures the intensity of optical energy emitted by the light-emitting diode, and a controller. The controller adjusts the intensity of the optical energy emitted by the LED based on the intensity measurement provide by the photodiode, to maintain the intensity of the emitted optical energy at a desired level.