Abstract: Methods of measuring a stall condition of a rotor of a wind turbine are disclosed. In one aspect a stall parameter is obtained on the basis of the power parameter and a thrust parameter; and the stall parameter compared with a threshold to determine a stall condition of the rotor.

Abstract: A method for adapting a urea deposit build up model used for estimating an amount of urea deposits in an aftertreatment system of a vehicle including a catalytic reduction device is provided.

Abstract: A method and apparatus that circumvents belt path obstacles in a Corvette C8 engine for transferring auxiliary power from the engine crankshaft output pulley to a supercharger input pulley by using a drive path transfer apparatus including a transfer input pulley located in the same plane as the crankshaft pulley and connected to it with the main drive belt, a transfer output pulley in a second plane spaced inboard of the first plane including the supercharger pulley, a secondary belt joining the transfer output pulley and the supercharger pulley, and a coupling shaft having the transfer input pulley at one end and the transfer output pulley at the other end, the coupling shaft being rotationally mounted in a two-piece installable bracket secured on the engine block in a location to the side of the obstruction, thereby transferring power from the engine to the supercharger without interference from the obstruction.

Abstract: A system for treatment of gasoline compression ignition engine exhaust includes components of a carbon monoxide absorber and a nitrogen oxide absorber, wherein nitrogen oxide comprises one or more compounds consisting of nitrogen and oxygen; an oxidation catalyst downstream of the carbon monoxide absorber; a close coupled reduction catalyst downstream of the nitrogen oxide absorber; an underfloor reduction catalyst downstream of the close coupled reduction catalyst; and an ammonia slip catalyst downstream of the underfloor reduction catalyst.

Abstract: A centrifugal pump includes a pump housing having a suspension inlet and a suspension outlet and a flow channel between the inlet and the outlet, a shaft mounted by bearings for rotation about a center axis, an impeller which is rotatable by the shaft, in alignment with the inlet and arranged to be rotated about the axis in the flow channel, and gas collecting openings for gas removal arranged in the flow channel. The inlet end of the flow channel includes a number of static vanes comprising gas collecting openings, the vanes extend radially from an inner wall of the flow channel toward the center of the flow channel and are upstream of the impeller.

Abstract: A controller for an aftertreatment system coupled to an engine is configured to: in response to receiving an engine shutdown signal, determine an estimated amount of ammonia stored on a selective catalytic reduction (SCR) catalyst included in the aftertreatment system; in response to determining that the estimated amount of ammonia stored in the SCR catalyst is less than an ammonia storage threshold, cause flow of a heated gas towards the SCR catalyst; cause insertion of reductant into an exhaust gas flowing through the aftertreatment system; and in response to determining that the estimated amount of ammonia stored in the SCR catalyst is equal to or greater than the ammonia storage threshold, cause shutdown of the engine.

Abstract: A method for predicting urea crystal build-up in an engine system when operating according to an intended drive cycle.

Abstract: A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

Abstract: Methods and systems for reducing emissions of an internal combustion engine are described. In one example, an electric heater and a passive NOx absorber or other emissions control device are positioned in a passage downstream of a combustor so as to process emissions from the combustor before an engine is started.

Abstract: A ceiling fan light wiring structure includes a positioning plate with wiring terminals fixed thereon, one end of the wiring terminals is connected to a line passing through a fixing rod, a top of the fixing rod is fixed to a bottom of the positioning plate so that the fixing rod hangs below the positioning plate. A bottom of the fixing rod is connected with a rotation assembly. Blades are connected to a bottom of the rotation assembly, and are equiangularly arranged about the fixing rod. An upper shielding plate is disposed at the top of the fixing rod, the upper shielding plate has a hollow interior and has a height greater than that of the positioning plate. Connection of the line and the motor wiring is achieved through quick plugs, which facilitates the user installing the ceiling fan light by herself or himself and subsequent wiring connection.

Abstract: Device for expanding a fluid, which device (1) comprises an inlet (2) for a high pressure fluid, an outlet (3) for a low pressure fluid, and a control valve (4) between the aforementioned inlet (2) and outlet (3) for expanding the fluid to a predefined pressure level, characterized in that the device (1) is further provided with one or more expanders (5) for expanding the fluid, of which one or more expanders (5) are connected in parallel with the control valve (4), whereby the device (1) is provided with a controller (8) configured to control the expanders (5) based on a flow rate (Qklep) of the fluid through the control valve (4).

Abstract: Operating an engine exhaust aftertreatment system includes receiving fluid pressure data of a reductant pump, determining a pump operating state, and comparing a pump health parameter to a prognostic pump failure criterion based upon the determining a pump operating state. Operating an engine exhaust aftertreatment system further includes outputting a pump health alert based upon a difference between the pump health parameter and the prognostic pump failure criterion. Related control logic is also disclosed.

Abstract: An engine is provided with a turbo charger including a wastegate valve. A first setpoint of opening of the wastegate valve is set in accordance with a target boost pressure. While a difference between the target boost pressure and a real boost pressure is large, the opening is controlled to a second setpoint, wherein the second setpoint is smaller than the first setpoint. While the opening is controlled to the second setpoint, it is determined whether a condition for limitation is satisfied in which an intake air quantity is above an intake air quantity criterion and an engine rotation speed is above an engine rotation speed criterion. When the condition is satisfied, the opening is controlled in a direction to increase from the second setpoint. The engine rotation speed criterion decreases as the intake air quantity increases. The intake air quantity criterion decreases as the engine rotation speed increases.

Abstract: A one-way airflow dual fan assembly of dismantling ease, comprising a first installation casing and a second installation casing, the first installation casing is aligned with the second installation casing, a flap is respectively fixed in both the first installation casing and the second installation casing, a cover plate is provided in the flap, connection mechanisms are provided between the cover plate and the flap, the flap is connected with the cover plate via the plurality of connection mechanisms, and the connection mechanisms comprise respectively a flexible connection component and a limiting part. By cooperation of the cover plates and the connection mechanisms, by pulling the cover plates, under limiting actions of the second wedges, the first wedges are pressed, the U-shaped connection blocks deform flexibly until the flexible connection components are released, and the cover plates are released from the flaps, so that the cover plates can be disassembled.

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 of estimating a temperature of a component of a wind turbine is provided, comprising, during a calibration period, receiving measurements of the temperature of the component and of one or more corresponding operational parameter; and calculating, using the measurements coefficients of a model of the temperature of the component. The model relates temperature at a current time to a temperature a preceding time, Tn?1. The model is segregated into separate bins based on wind speed or power generated by the wind turbine. The method further comprises using the model to estimate a temperature of the wind turbine.

Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to activate the second heater in response to determining that a compound deposit is likely present.

Abstract: A CPU is configured to executes a filter regeneration process, a firing process, and a stopping process. The CPU is configured to stop rotation of a crankshaft of an internal combustion engine mounted on a vehicle on the condition that the vehicle is decelerating after termination of the firing process in the stopping process.

Abstract: This turbocharger includes: an impeller which includes a hub provided to be rotatable around a center axis and a plurality of turbine blades arranged on the outside of the hub in a radial direction at intervals in a circumferential direction around the center axis; and a turbine housing which is disposed on the outside of the impeller in the radial direction and forms a scroll flow path guiding an exhaust gas toward the impeller on the inside of the radial direction while turning the exhaust gas in the circumferential direction, wherein a flow path width in the circumferential direction of at least one of a plurality of inter-blade flow path portions formed between the plurality of turbine blades is different from a flow path width of the another of the plurality of inter-blade flow path portions.

Abstract: A method for monitoring emissions in the exhaust gas of an internal combustion engine in a vehicle, comprising carrying out (520) multiple successive emission measurements for at least one component in the exhaust gas, wherein each of the emission measurements is respectively performed after a driving distance of predefined length is covered by the vehicle; storing (540) a distance-related emission value (Ei), which was obtained (530) on the basis of the measurement, in a memory element (42, 200, 400) for each of the emission measurements; and forming (550) a smoothed emission level for a current point in time on the basis of multiple of the previously stored distance-related emission values, wherein more recent emission values are taken into consideration more strongly than emission values lying farther back in time in the formation of the smoothed emission level.