Abstract: The present disclosure provides a perforating assembly and method of use. In one embodiment, the perforating assembly comprising an offset loading tube mounted within a gun carrier. A plurality of shaped charges are mounted within the loading tube and the loading tube is mounted within the gun carrier on one or more swivel mechanisms that enable the loading tube to rotate within the gun carrier.

Abstract: A pump can include a plunger and a barrel, at one stroke extent flow being substantially restricted between the plunger and the barrel at spaced apart positions and a plunger interior passage in filtered communication with a fluid chamber between the positions, and at an opposite stroke extent the fluid chamber being in communication with the standing valve. A method can include displacing a plunger in one direction, thereby receiving filtered liquid into a fluid chamber, and b) displacing the plunger in an opposite direction, thereby transferring the liquid to a barrel interior passage. A system can include an actuator that reciprocates a rod string, and a pump including a plunger with a traveling valve, a barrel with a standing valve, and a filter that filters liquid which flows from a tubing string to a compression chamber disposed between the traveling valve and the standing valve.

Abstract: An electric submersible pump assembly with integral heat exchanger, high-speed self-aligning bearings, and dual bearing thrust chamber is described. The described pump assembly, modules, and components may be used for operating an electric submersible pump at high speeds as well as over a wide range of speeds and flowrates without replacing downhole equipment. The described pump assembly may be shorter than comparable pump assemblies and may be assembled offsite, thereby leading to faster and easier installation with less down time. By operating over a wide range of speeds, the disclosed pump assembly allows the operator to reduce overall inventory, reduce down time for the well, and avoid other complications associated with replacing a pump assembly or other downhole components.

Abstract: An apparatus, system and method for flow rate harmonization in electric submersible pump (ESP) gas separators. A method for flow rate harmonization in ESP gas separators includes modifying flow of multi-phase well fluid through vent passages of a crossover when a flow rate of a centrifugal pump differs from a flow rate of a gas separator including the crossover, the gas separator serving as the fluid intake into the centrifugal pump. Flow of fluid through vent passages is modified by one of attaching flow sizing inserts into vent passages or production passages of the crossover, or by attaching a funnel to a crossover inlet. A gas separator system includes a series of interchangeable funnels attachable to a fluid entrance of a crossover of the gas separator, wherein interchanging the particular funnel attached to the crossover modifies flow rate output of the gas separator.

Abstract: A method for directing a proppant in a subterranean formation including providing a first wellbore and a second wellbore, wherein the first wellbore and the second wellbore are disposed about a target area of the subterranean formation; creating a pressure differential between the first wellbore and the second wellbore, such that the pressure of one of the first wellbore or the second wellbore is at a higher pressure and the other of the first wellbore or second wellbore is at a lower pressure; and initiating a fracturing pressure in the higher pressure wellbore by pumping a fracturing fluid in the wellbore, the fracturing pressure sufficient to create a fracture at a predetermined location; whereby the fracturing fluid is drawn from the fractured wellbore toward the lower pressurized wellbore as a result of the pressure differential.

Abstract: A separator for removing free gas from a fluid extracted from a well, comprising a conventional electric submersible pump system, with a centrifugal gas separator, coupled to a static, gas separator of the gas anchor type, via a an ESP capsule, which has a closed upper end that forms a seal against the casing of the centrifugal gas separator and a lower conical end, with an adapter on the lower end of the capsule, which is connected to the upper end of the static separator. Also disclosed is a method for separating free gas from a fluid extracted from a well Among other advantages, aspects disclosed enable gas to be separated more efficiently and a fluid with a larger amount of liquid and low gas concentration to be sent to the production pump, such that the amount of gas enables the pump system to remain as stable as possible.

Abstract: A method to measure the fluid depth in a wellbore is described. An optimized acoustic pulse stream is launched into the wellbore, and the round-trip time-of-flight between the fluid surface and the top of the wellbore is measured. The method provides improved signal to noise ratio, and can be actively tuned to a plurality of wellbore configurations.

Abstract: A method and apparatus are provided for determining movement of a fluid into or out of a subsurface wellbore, to thereby enable accurate allocation of fluids being produced by or injected into each of several zones of the wellbore. A temperature change is effected in the fluid at a first location in the wellbore. A temperature of the fluid is measured at one or more sensing locations downstream of the location of the temperature change. A simulated heat flow profile is generated from a wellbore model. The simulated heat flow profile is compared to the measured temperature of the fluid at the one or more sensing locations. An inversion model is used to determine, for a plurality of points of interest, a fluid flow direction and/or a cumulative flow rate contribution.

Abstract: A method includes varying a temperature of a treatment fluid. The treatment fluid is pumped into the first wellbore as part of a fluid diversion process or a fluid treatment process after the temperature of the treatment fluid is varied. A first downhole measurement is obtained in the first wellbore using a cable in the first wellbore or a first sensor coupled to the cable concurrently with or after the fluid diversion process or the fluid treatment process. An additional measurement is obtained concurrently with obtaining the first downhole measurement. The first downhole measurement and the additional measurement are combined or compared. A location where the treatment fluid is flowing through perforations in the first wellbore is determined based upon the combining or comparing the first downhole measurement and the additional measurement.

Abstract: An apparatus for securing a printed wiring assembly (PWA) within an enclosure of a downhole tool includes an elongate base, an elongate cover, and at least one bracket member coupled to the downhole tool. The base is for supporting electrical components that may include electronics, circuitry, conductive strips, and batteries thereon. The cover extends in a longitudinal direction and extends over the central portion of the base. At least one end of the base is uncovered by the cover. The cover includes at least one lateral recess that extends in a direction generally perpendicular to the longitudinal direction. The bracket member has a portion extending into the lateral recess and is configured to engage the cover and secure the cover within the enclosure.

Abstract: A rotary pulser for transmitting information in a mud pulse telemetry system of a drilling operation. The pulser has two rotors mounted adjacent each other so that obstruction of the passages formed between the blades in one pulser by the blades of the other pulser creates pressure pulses in the drilling fluid. Each rotor is separately controlled and can be rotated continuously in one direction or oscillated. The ability to rotate each rotor separately provides flexibility in the pulser's operating mode, so as to allow more efficient generation of pulses, and also enhances the ability of the pulser to clear debris that would otherwise jam or obstruct the pulser.

Abstract: The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for determining a mudweight of drilling fluids in a hydrocarbon reservoir. One computer-implemented method includes: receiving pore pressure data of a rock formation in the hydrocarbon reservoir; determining permeability data of fractures of the hydrocarbon reservoir; determining Hoek-Brown failure criterion data; and determining a safe mudweight window based on the pore pressure data of the rock formation, the permeability data of the fractures, and the Hoek-Brown failure criterion data.

Abstract: A method includes identifying linearly behaving data within obtained data associated with fluid obtained from a subterranean formation. Shrinkage factor is determined based on the linearly behaving data. A function relating GOR data of the obtained fluid with the determined shrinkage factor is determined. A first linear relationship between optical density (OD) data of the obtained fluid and the function is determined. A second linear relationship between density data of the obtained fluid and the function is determined. An oil-based mud (OBM) filtrate contamination property of OBM filtrate within the obtained fluid based on the first linear relationship is determined. A native formation property of native formation fluid within the obtained fluid based on the second linear relationship is determined. A volume fraction of OBM filtrate contamination within the obtained fluid based on the OBM filtrate contamination property and the native formation property is estimated.

Abstract: This disclosure relates to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. Furthermore, the pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: A process and associated system for the improved reclamation of disturbed lands (e.g., mined lands) is disclosed. In particular, the system including a dewatering cyclone, a screw classifier, and a dewatering apparatus (e.g. a dewatering belt) arranged in series to enable rapid and cost effective dewatering of slurries containing dilute clay and sand tailings to create an improved engineered reclamation material (ERM). The ERM formed by the controlled combining of dewatered sand tailings with dilute clay slurry and with a flocculant and overburden. The ratio of clay:sand: overburden of the ERM may be achieved by balancing the solid content (Cw) and water content (1?Cw) materials of the clay slurry, sand tailings and overburden. In some embodiments, the system may include at least one additional component, such as, for example, static screen(s), centrifuge(s), vibrating screens, drum screens, belt screens, belt filters, and/or other liquid-solid separation devices.

Abstract: A tunnel boring machine includes: a shield body; a cutterhead assembly, a first drive mechanism; a second drive mechanism; and a third dive mechanism The cutterhead assembly includes a main cutterhead and a plurality of auxiliary cutterheads. The main cutterhead is rotatably arranged at a front side of the shield body and defines a soil chamber between the main cutterhead and the shield body, and is movable along an up-down direction. The plurality of auxiliary cutterheads are rotatably arranged in the soil chamber, and adjacent to a bottom of the shield body and arranged at left and right sides of a vertical central line of the main cutterhead. A rotation diameter of the main cutterhead is greater than a rotation diameter of the auxiliary cutterhead, and the rotation diameter of the main cutterhead is the same as a maximum width of the shield body.

Abstract: A cylinder block includes: a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates; and a cooling portion, wherein the cooling portion includes a plurality of cooling holes each formed between the adjacent cylinder bores and extending from the piston insertion end surface in an axial direction of the cylinder block.

Abstract: The invention pertains to the field of power engineering and may be applied to convert kinetic and thermal energy of a working medium into mechanical work. The method includes swirling of a pre-compressed working medium, its expansion in an actuating device to produce mechanical work in the form of rotation of the shaft, and discharge of the working medium from the actuating device. The working medium is swirled in the actuating device along a spatial trajectory in the form of a conical helix, the projection of which on a plane positioned at an angle to the axis of rotation is a curve having at least two breakpoints.

Abstract: A boundary layer turbomachine can include a housing (10) defining an interior space and having an inlet opening and an outlet opening to facilitate movement of a fluid through the housing (10). The boundary layer turbomachine can also include a rotor assembly (20) disposed in the rotor chamber and configured to rotate about an axis of rotation (1). The rotor assembly (20) can have a plurality of disks (21) spaced apart along the axis of rotation (1) to provide gaps (54) between the disks (21). The plurality of disks (21) can also define an interior opening (26) along the axis of rotation (1). The rotor assembly (20) can have a disk carrier (46) disposed at least partially in the interior opening (26) in support of the plurality of disks (21). The disk carrier (46) can have a fluid passageway (47) exposed to two or more of the gaps (54) between the disks (21). The fluid can pass through gaps (54) between the disks (21) and the interior opening (26) as the fluid moves through the housing (10).

Abstract: A modular method of balancing a rotor assembly comprising two or more rotor sub-assemblies comprises dynamically balancing a set of rotor units each comprising one of the rotor sub-assemblies (52) and in which every other rotor sub-assembly is substituted by a respective simulator (54A, 56A). A respective set (55X, 55Y, 55Z) of balancing weights is applied to one or more of the rotor sub-assembly and simulators of a rotor unit (50A) to achieve dynamic balancing such that each set only corrects unbalance contributed by that rotor sub-assembly or simulator to which it is applied. Each set which is applied to a simulator is transferred to the corresponding sub-assembly. The sub-assemblies are then mated to form the balanced rotor assembly. Excitation of flexible modes of the balanced rotor assembly during its rotation is reduced or avoided.

Abstract: A guide vane airfoil for placement in a flow path portion of a turbomachine is provided, which, relative to a flow pattern in flow path portion, has a leading edge and, downstream thereof, a trailing edge, as well as a suction side and a pressure side; relative to a longitudinal axis of the turbomachine, viewed in the axial direction, in a radially inner portion, forming a first angle ? with a circular arc about the longitudinal axis, and, in a radially outer portion, a second angle ? with a circular arc about the longitudinal axis. The guide vane airfoil is inclined in the outer portion, thus ??90°, in terms of absolute value, being >0° (|??90°|>0°), and the guide vane airfoil being more highly inclined in the outer portion than in the inner portion, thus ??90°, in terms of absolute value, being >??90° (|??90°|>??90°).

Abstract: A turbine blade including an airfoil extending radially from a platform above a shank is disclosed. The airfoil has a leading edge; a trailing edge; and a pressure side wall and a suction side wall extending between the leading edge and trailing edge. The turbine blade includes a chamber in at least one of the airfoil and platform. The chamber is configured to deliver a first fluid therein having a higher pressure than a second fluid in a wheel space adjacent the shank. The turbine blade includes an exiting hole in fluid communication with the chamber, positioned at a location upstream of the leading edge and circumferentially to a side of a selected side wall of the pressure side wall and suction side wall. In operation, the first fluid exits the exiting hole to increase a momentum of a boundary layer film near the selected side wall, preventing wheel space leakage from negatively impacting the boundary layer film.

Abstract: A turbomachine rotor having a radially inner hub element, a radially outer cover element, and rotor blades which extend between the hub element and the cover element and have rotor blade airfoils. The rotor blades are an integral component of the hub element and are bonded to the cover element according to a first alternative or are an integral component of the cover element and are bonded to the hub element according to a second alternative. The rotor blades have an integral socket adjacently to the cover element according to the first alternative or adjacently to the hub element according to the second alternative, and the rotor blades are bonded to the cover element according to the first alternative or to the hub element according to the second alternative via the socket.

Abstract: A gas turbine combustor is equipped with a transition piece assembly of the combustor, the transition piece assembly includes a transition piece, a frame which is installed on the downstream side (an outlet part) of the transition piece and a seal member which is installed on a coupled part of the aforementioned frame and a turbine-side stator vane part and blocks flowing of compressed air from a compressor into the aforementioned turbine side through a gap of the coupled part, and a projection member is provided on an outer circumference of the aforementioned frame, a movement suppression mechanism for matching the aforementioned projection member and suppressing possible movement of the aforementioned seal member is provided on the aforementioned seal member, the movement suppression mechanism and the aforementioned projection members fit together and thereby the aforementioned seal member is fixed to the frame.

Abstract: An actively cooled assembly adapted for use in a gas turbine engine is disclosed herein. In illustrative embodiments, the assembly includes at least one ceramic matrix composite component with an attachment feature.

Abstract: An acquisition unit is configured to acquire measurement values of a target device. The measurement values that are acquired include at least a temperature and a flow rate of an input fluid to be input to the target device, and a temperature and a flow rate of an output fluid to be output from the target device. A correction unit is configured to obtain a correction measurement value by which the measurement values are corrected through thermal equilibrium calculations based on the measurement values. A distance calculation unit is configured to calculate a Mahalanobis distance with a factor of the correction measurement value.

Abstract: A vane arm assembly for a gas turbine engine. The vane arm assembly includes a vane arm defining an aperture at an end thereof with an aperture wall. The vane arm assembly also includes a vane stem extending through the aperture of the vane arm. The vane arm assembly further includes a mechanical fastener retaining a position of the vane arm in the longitudinal direction of the vane stem. The vane arm assembly yet further includes an impedance ring disposed within the aperture of the vane arm and within an impedance ring groove defined by the vane stem to provide redundant position retention of the vane arm in the longitudinal direction of the vane stem.

Abstract: A variable nozzle unit includes a variable nozzle vane which is disposed between a hub wall surface and a shroud wall surface and is rotatable around a rotation axis parallel to a rotation axis of a turbine impeller inside a gas flow passage. The variable nozzle vane includes a leading edge, a trailing edge, and an outer vane surface connecting the leading edge and the trailing edge and facing a radial outside of the rotation axis. A concave portion at least in a range of a leading edge side in relation to the rotation axis is formed at the hub wall surface side of the outer vane surface.

Abstract: A variable geometry turbine is disclosed comprising: a housing; a turbine wheel supported in the housing for rotation about an axis; a movable wall member; a cavity provided in the housing; and an inlet passageway extending radially inwards towards the turbine wheel. The movable wall member comprises a generally annular wall and radially inner and outer flanges extending axially from the generally annular wall, inner surfaces of the generally annular wall and radially inner and outer flanges defining an interior surface of the movable wall member. The cavity is suitable for receipt of the radially inner and outer flanges of the moveable member, the movable wall member being axially movable relative to the housing to vary the extent to which the radially inner and outer flanges of the moveable member are received in the cavity.

Abstract: In a steam turbine seal packing performance monitoring system, steam pressure is measured by installing a pressure sensor inside a seal packing for preventing steam from leaking, so that pressure information can be transmitted using magnetic field communication in order to externally monitor seal packing performance. The system includes a seal packing unit that is installed on a rotor shaft and has a plurality of seal packs disposed along an axial direction of the rotor shaft; a pressure sensor installed inside the seal packing unit to detect a pressure of steam leaked from inside the seal packing unit and to transmit a magnetic field signal by converting a detection signal indicative of the detected pressure into the magnetic field signal; and an adapter for receiving the magnetic field signal, converting the received magnetic field signal into pressure data, and calculating a leakage amount of steam based on the pressure data.

Abstract: A turbine shroud or other assembly adapted for use in a gas turbine engine is disclosed in this paper. In illustrative embodiments, a metallic carrier included in the assembly is configured to be manufactured by casting or additive layer manufacturing.

Abstract: The invention relates to a thermal power station and a method for storing heat by means of a steam generator a water-steam cycle which is connected to the steam generator and to a thermal store. Said thermal store comprises a first container for a heat store medium when it is cold, a second container for the heat store medium when it is hot, and a heat exchanger which is connected to the two containers and which is connected to the heat-steam cycle via a water-steam feed line and a water-steam discharge line. The thermal store has an additional heat exchanger which is connected to the two containers, an air feed line and an air discharge line being provided, the air discharge line being connected to the combustion air feed line leading to the combustion chamber.

Abstract: The invention relates to a waste heat recovery system (3) for an internal combustion engine (1), having a working fluid circuit (19) with a condenser (31) that is also connected to a working fluid cooling circuit (34), and wherein the working fluid cooling circuit (34) has a cooler (35). The invention provides a waste heat recovery system (3) having a working fluid cooling circuit (34) which is improved in comparison to one design of a working fluid cooling circuit (34). This is achieved by the working fluid cooling circuit (34) having a cooler bypass (46). This configuration makes it generally possible for part of the coolant volume flow to be routed past the cooler (35). This is advantageous in particular at low temperatures since otherwise very low pressures arise in the working fluid cooling circuit (34).

Abstract: An apparatus includes a pump circuit structured to receive pump data indicative of an operating characteristic of a pump feeding a fluid to a waste heat recovery (WHR) system; a flow circuit structured to receive valve position data indicative of a position of a valve downstream of the pump, estimate a flow rate of the fluid exiting the pump, and estimate the flow rate of the fluid exiting the valve; and a pressure circuit structured to receive pressure data indicative of the pressure of the fluid exiting the valve, estimate a change in pressure of the fluid across the WHR system, and determine a pressure of the fluid in a hot section of the WHR system based on the pressure of the fluid exiting the valve and the change in the pressure of the fluid across the WHR system.

Abstract: A combined cycle dual closed loop electric generating system, having a gas turbine assembly (having a combustion chamber, a compressor, a first pump, a first driveshaft, a gas turbine and a first generator) and a steam turbine assembly (having a second pump, a second driveshaft, a steam turbine and a second generator). The first portion of the working fluid circulates through the gas turbine assembly and a first heat exchanger. The second portion of the working fluid circulates through the steam turbine assembly and the first heat exchanger. The first heat exchanger transfers a first heat energy from the gas turbine loop to the steam turbine loop. The gas turbine assembly generates a first portion of an electric output. The steam turbine assembly generates a second portion of the electric output.

Abstract: A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant; and a Kalina cycle energy conversion system including a first group of heat exchangers to heat a first portion of a working fluid by exchange with the heated heating fluid stream and a second group of heat exchangers to heat a second portion of the working fluid. The second group of heat exchangers includes a first heat exchanger to heat the second portion of the working fluid by exchange with a liquid stream of the working fluid; and a second heat exchanger to heat the second portion of the working fluid by exchange with the heated heating fluid stream.

Abstract: Systems for valve actuation in internal combustion engines provide configurations for hydraulic lash adjusters and valve actuation valvetrain components that are particularly suitable for prevention of HLA jacking in dedicated cam environments including Type II valvetrain architectures. In one implementation, a lash adjuster loading component, which may comprise a stroke-limited spring biased piston associated with the main event valvetrain keeps the lash adjuster under a constant compressive force to prevent jacking.

Abstract: A variable camshaft timing assembly that comprises a hub including at least one vane extending radially-outwardly away from a center axis; an elongated camshaft sleeve, configured to be received at least partially by an inner cavity of a camshaft, having a substantially annular outer surface including a distal bearing section, an end bearing section, and a hub section: the distal bearing section configured to be positioned radially-inwardly from and concentric with a distal bearing of the camshaft and to provide support to the distal bearing; the end bearing section, axially spaced from the distal bearing section, configured to be positioned radially-inwardly from and concentric with an end bearing of the camshaft and to provide support to the end bearing; and the hub section, configured to engage the hub, located axially between the distal bearing section and the end bearing section.

Abstract: A multi-way valve includes a control pressure channel, first and second control fluid channels, a valve body in the first and second control fluid channels, and an electrically controlled device having a drive member and an armature. The armature moves back and forth by the drive member between inactive and active positions. Movement of the armature from the inactive to the active position displaces the valve body arrangement to an active position, closing the first and opening the second control fluid channel is open. The electrically controlled device includes a drive body connected to the armature and a first spring member between the armature and the drive body. The valve body arrangement is biased towards the inactive position by a second spring member. The armature in the inactive position is biased towards the active position by a third spring member. Also disclosed is an actuator including the valve.

Abstract: An electrical system including a linear motor in which energized forcer and thruster coils are used for the field and armature elements, respectively. In accordance with various exemplary embodiments, one or more thruster coils may be provided on a reciprocating shaft with opposing single or multiple fixed forcer coils. Using coils as the electromagnets for both forcer and thruster coils advantageously provides necessary power while also minimizing system weight and decreases in magnetism typically encountered with permanent magnets with rising temperature, resulting in higher and more controllable magnetic forces over varying temperatures. A ferrous system housing and open ferrous containers for the thruster coils may be further included to advantageously focus the magnetic forces. Additionally, multiple forcer and thruster coils may be disposed in various arrangements along the reciprocating shaft.

Abstract: During assembly of a transmission, an adapter is installed on a transmission suction filter. The adapter includes a deformable bellows. A top lip of the bellows is attached to the filter inlet while a bottom lip of the bellows includes at least one fin. The fin has a chamfered edge. As two case halves are brought together, the chamfer rubs against a rear case half compressing the bellows. After assembly, the fins control a distance between a sump bottom and the bottom lip of the bellow. As a result, the fluid level can be lower without risking air ingestion.

Abstract: The invention relates to an oil sump (1) comprising a lower shell (2) intended for containing lubricating oil of an engine, in which a flow of oil, referred to as suction oil flow (I), is sucked up via a suction tube (44) to supply a lubricating circuit, and an oil flow, referred to as returning oil flow (II), falls into the oil sump (1). The oil sump (1) comprises an anti-emulsion plate (8) arranged located at the mouth of the suction tube (44) during a transitional period in which the temperature of the oil is lower than an optimal operating temperature.

Abstract: Method for controlling the supply of oil to an internal combustion engine, comprising a procedure for detecting a potentially dangerous condition for the correct operation of an internal combustion engine (1). Said condition is the clogging of an oil filter (3) upstream of the engine (1) or the excessive presence of fuel in the lubricant oil. The detection procedure comprises the steps of: changing the flow rate of oil that transits through the filter (3) and that is processed by a pump (2) for lubricating the engine (1); detecting the time that passes between changing the oil flow rate and a detection of a pre-established variation in a parameter connected at least with the pressure downstream of said filter (3), said variation being determined by said change of the flow rate, said filter (3) being placed upstream of the engine (1); comparing said time with pre-established values.

Abstract: A regeneration control device for an exhaust purification device includes a regeneration controller that executes regeneration control in which particulate matters trapped by a filter are removed by combustion, and a post-injection controller that during the regeneration control, executes control in which a time period of a post-injection of fuel executed subsequently to a main injection of fuel is advanced such that a supercharging pressure of a turbosupercharger becomes higher than a supercharging pressure during steady operation.

Abstract: A mobile emissions control system is provided for diesel engines operated on ocean-going ships at-berth. The emissions control system comprises two essential elements: an emissions capturing system and an emissions control system. The emissions control system may be mounted on a towable chassis or mounted on a barge, allowing it to be placed alongside ocean-going ships at-berth. The emission capturing system captures exhaust from a ship's diesel engine and conducts it into the emissions control system, which cleans the exhaust and then passes clean air into the atmosphere through an exhaust outlet.

Abstract: The invention relates to a method for monitoring an ammonia slip catalytic converter which is arranged in an exhaust gas after-treatment device of an internal combustion engine, downstream of a catalytic converter arrangement, wherein the method comprises the steps of measuring a nitrogen oxide content in the exhaust gas by means of a sensor upstream of the ammonia slip catalytic converter, detecting a sensor signal of an ammonia-cross-sensitive nitrogen oxide sensor which is arranged downstream of the ammonia slip catalytic converter, and checking whether the ammonia-cross-sensitive nitrogen oxide sensor measures a higher value than the sensor.

Abstract: Systems, methods, and apparatuses are provided for increasing exhaust gas temperature. A system includes a valve and a controller coupled to the valve. The controller is structured to determine that an exhaust manifold pressure does not meet an exhaust manifold pressure setpoint and in response, cause an adjustment of an effective flow area of exhaust gas from an engine. The adjustment of the effective flow area is structured to increase an exhaust gas temperature.

Abstract: In one aspect, a system is provided and includes an engine including an exhaust valve, an exhaust manifold downstream of the exhaust valve and a muffler downstream of the exhaust manifold. The system also includes a catalyst positioned downstream of the exhaust valve.

Abstract: A positionable emissions control watercraft that may be placed near a serviced watercraft in a location that is away from the risk of falling cargo, while also eliminating a need for a spacer or a spacer barge, and allowing other service watercraft to access the serviced watercraft.

Abstract: An exhaust system, especially for an internal combustion engine in a vehicle, includes at least one sensor carrier unit (20) carried on an exhaust gas-carrying element (14). The sensor carrier unit (20) includes a sensor carrier element (22) fixed to the exhaust gas-carrying element (14). A plurality of sensor pipe connections (24, 26, 28), that are fitted or can be fitted with sensors, are provided on the sensor carrier element (22). The plurality of sensor pipe connections (24, 26, 28) each have at least one respective sensor-mounting/measuring opening (30) formed therein.