Abstract: A method includes determining whether a urea refill event is detected, and clearing a quality accumulator value and clearing a latching abort command. The method includes determining whether urea fluid quality check abort conditions are met, and clearing the urea quality accumulator, latching the abort command, and exiting the reductant fluid quality check. In response to the abort conditions not being met, incrementing the urea quality accumulator according to an amount of urea being injected, and comparing the accumulated urea quantity to a low test threshold. The method includes, in response to the accumulated urea quantity being greater than the low test threshold, comparing the accumulated urea quantity to a high test threshold, and in response to the urea quantity being greater than the high test threshold, determining whether the a NOx exceedance is observed and clearing a urea quality error in response to the NOx exceedance not being observed.

Abstract: Methods and systems are provided for adjusting engine operating parameters in response to an emission output from vehicles within a region. In one example, a method comprises adjusting engine operating parameters in a portion of the vehicles to decrease an emission output therefrom.

Abstract: A number of variations may include a combustion engine tailpipe exhaust circuit defining an exhaust stream and a waste heat recovery system constructed and arranged to recover thermal energy from at least one of a tailpipe exhaust circuit, exhaust stream, charge air cooler, exhaust gas recirculation fluid stream, or coolant stream. The waste heat recovery system may include an expander assembly that may include a first pump, an expander, an evaporator, and a condenser. A second pump driven by the waste heat recovery system may be in fluid communication with the tailpipe exhaust circuit and exhaust stream and may be constructed and arranged to reduce exhaust pressure in the tailpipe exhaust circuit and exhaust stream. A third pump may be in fluid communication with an exhaust gas recirculation fluid stream and which is constructed and arranged to pump the exhaust gas recirculation fluid stream within the exhaust gas recirculation system.

Abstract: An internal combustion engine includes an exhaust pipe having an interior through which exhaust gas flows, a pressure delivery pipe connected to the exhaust pipe, an interior of the pressure delivery pipe communicating with the interior of the exhaust pipe, a pressure sensor connected to the pressure delivery pipe, the pressure sensor detecting a pressure of the interior of the exhaust pipe, and a fastener that fixes the pressure delivery pipe to the exhaust pipe. A part of the fastener is exposed in the interior of the exhaust pipe.

Abstract: An intake pipe includes a cylindrical pipe main body, a flange, which is provided on an end of the pipe main body in an axial direction and protrudes radially outward about an axis of the pipe main body from an outer surface of the pipe main body, and a chamber forming portion, which is located outside of the pipe main body and defines a chamber. The chamber forming portion is provided to connect the outer surface of the pipe main body and the flange to each other and is integrated with the pipe main body and the flange.

Abstract: A unshrouded vane assembly for an unducted propulsion system includes a plurality of vanes which have non-uniform characteristics configured to generate a desired vane exit swirl angle.

Abstract: An aircraft propulsion system comprising a reciprocating liquid cooled engine housed within the fuselage driving twin fuselage mounted ducted-fans is disclosed. The propulsion system may be liquid cooled with a liquid cooled exhaust and at least one turbocharger. The ducted-fans may run fan blade tip speeds of up to 97% Mach driven by a near constant RPM engine through a continuously variable transmission. The propulsion system may be low noise and may meet environmental standards typical in the automotive industry.

Abstract: An engine exhaust control valve of a saddle-riding vehicle is provided with: a valve shaft disposed in an intersecting manner with a center line of a main pipe portion of an engine exhaust pipe; a valve plate mounted on the valve shaft and rotatably positioned within an inner peripheral surface of the main pipe portion; a valve rotational drive portion mounted on one shaft end of the valve shaft; a drive motor for driving the valve rotational drive portion; and a control unit for controlling the drive motor. Protruding portions with which outer peripheral edges of the valve plate are brought into contact at a rotational limit of the valve plate in a closing direction are formed on an inner peripheral surface of the main pipe portion. The above structure provides a high degree of sealing.

Abstract: An exhaust component assembly includes a first exhaust component extending along a first axis, a second exhaust component extending along a second axis, and a mixer having a mixer inlet portion connected to an outlet from the first exhaust component and a mixer outlet portion connected to an inlet to the second exhaust component. A flexible connection couples the mixer inlet portion to the mixer outlet portion.

Abstract: An automotive exhaust aftertreatment system for reducing effluents, such as nitrous oxides (NOx), in exhaust gasses passing through the system. The automotive exhaust aftertreatment system includes a dosing unit configured to inject primary and secondary reductant fluids into exhaust gasses based on various strategies to optimize operation of the system.

Abstract: A vehicle comprising an internal combustion engine, an electrical heated type catalyst device provided in an exhaust passage of the internal combustion engine and including a conductive substrate generating heat upon energization and a catalyst heated through the conductive substrate, and a control device, the control device comprising an internal moisture calculating part calculating an amount of internal moisture comprised of an amount of moisture present at an inside of the catalyst device and an engine output control part controlling the output of the internal combustion engine based on a required vehicle output and the amount of internal moisture. The engine output control part is configured so that if moisture is present at the inside of the catalyst device, it restricts the output of the internal combustion engine to a lower output when the internal moisture is large compared to when it is small.

Abstract: A method for operating an exhaust after-treatment system including an SCR-catalyst, a metering device for dosing a reducing agent being controlled on the basis of a determining variable that influences a nitrogen-oxide concentration downstream of the SCR-catalyst. A breakthrough identification is carried out for the SCR-catalyst, wherein if a breakthrough is identified, the determining variable is altered to a higher nitrogen-oxide concentration downstream of the SCR-catalyst and the metering device is controlled in order to dose the reducing agent on the basis of the altered determining variable.

Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOx catalyst has a rich air-fuel ratio and NOx occluded by the NOx catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set larger when s flow amount of the exhaust gas detected or estimated by an exhaust-gas flow amount detector is larger.

Abstract: A turbocharger includes: at least two scroll passages, and a first range of the nozzle flow passage into which the exhaust gas flowing through the first scroll passage is introduced does not overlap with a second range of the nozzle flow passage into which the exhaust gas flowing through the second scroll passage is introduced, in a circumferential direction of the nozzle flow passage.

Abstract: The invention relates to a method for controlling a waste-heat utilization system (20) for an internal combustion engine (10) of a vehicle, wherein the waste-heat utilization system (20) has at least one expander (22), which can transmit torque to the internal combustion engine (10) and which can be bypassed by means of a bypass flow path (25), at least one evaporator (21), and at least one pump (24) for an operating medium, and wherein at least the evaporator (21) is arranged in the region of the exhaust gas system (11) of the internal combustion engine (10). The expander (22), which can be operated in several operating modes, has a driving connection to a secondary drive shaft (19) of the internal combustion engine in at least one operating mode. An operating mode of the waste-heat utilization system (20) is selected by a control device (30) on the basis of at least one input variable and the waste-heat utilization system (20) is operated in said operating mode.

Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOX catalyst has a rich air-fuel ratio and NOX occluded by the NOX catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set smaller when a temperature of the NOX catalyst detected or estimated by an NOX catalyst temperature detector is higher.

Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOX catalyst has a rich air-fuel ratio and NOX occluded by the NOX catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set larger when an amount of reducing agent detected or estimated by a reducing agent amount detector is larger.

Abstract: A combustion system including an ion transport membrane assembly coupled to an internal combustion engine to generate power via oxy-combusting a fuel stream in a combustion chamber of the internal combustion engine, and a method of combusting the fuel stream via the combustion system, wherein a portion of an exhaust stream is recycled to the ion transport membrane assembly. Various embodiments of the combustion system and the method of combusting the fuel stream are disclosed.

Abstract: A combustion system including an ion transport membrane assembly coupled to an internal combustion engine to generate power via oxy-combusting a fuel stream in a combustion chamber of the internal combustion engine, and a method of combusting the fuel stream via the combustion system, wherein a portion of an exhaust stream is recycled to the ion transport membrane assembly. Various embodiments of the combustion system and the method of combusting the fuel stream are disclosed.

Abstract: A method and system for flue gas reclamation is described. In one embodiment, a flue gas reclamation system is provided. The system includes a combustion engine including an intake member, an output shaft, and an exhaust outlet. The intake member receives flue gas from a gas source. A generator is connected to the output shaft and a compressor is connected to the exhaust outlet of the combustion engine. At least one holding tank is connected to the compressor and the compressor stores enriched flue gas from the exhaust outlet of the combustion engine in the at least one holding tank. A battery is connected to the generator and is configured to provide electric power to the flue gas reclamation system. An algae farm in fluid communication with the at least one holding tank is configured to receive the stored enriched flue gas from the at least one holding tank.