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DRY COOLING SYSTEM FOR POWERPLANTS

Thu, 23 Feb 2017 08:00:00 EST

An indirect dry cooling system suitable for steam condensing applications in a power plant Rankine cycle in one embodiment includes an air cooled condenser having a plurality of interconnected modular cooling cells. Each cell comprises a blower and tube bundle assemblies each including inlet headers, outlet headers, and plurality of tubes extending between the headers. In one embodiment, the tube bundle assemblies may be shop fabricated as a unit to form an A-frame or V-frame cell construction The tubes may be finned. Steam circulating in a closed flow loop on the tube side from a steam turbine is cooled in each cell by ambient air blown through the tube bundles, thereby forming liquid condensate. The condensate is collected and returned to the Rankine cycle for reheating to form steam to drive the turbine.



SWIRLER FOR A BURNER OF A GAS TURBINE ENGINE, BURNER OF A GAS TURBINE ENGINE AND GAS TURBINE ENGINE

Thu, 23 Feb 2017 08:00:00 EST

A swirler for a burner of a gas turbine engine, having a plurality of vanes extending from an outer radius of the swirler to an inner radius of the swirler and a plurality of mixing channels between the vanes to channel air from a radially outer end of the mixing channel, located essentially at an outer radius of the swirler, to a radially inner end of the mixing channel, located essentially at an inner radius of the swirler, at least one main injector for providing fuel for a main flame of the gas turbine engine, the main injector arranged at and/or in at least one of the mixing channels, and at least one pilot injector for providing fuel for a pilot flame of the gas turbine engine. A burner of a gas turbine engine and a gas turbine engine include the swirler.



COMBUSTOR HEAT SHIELD WITH CARBON AVOIDANCE FEATURE

Thu, 23 Feb 2017 08:00:00 EST

The build-up of carbon deposition on the front face of a combustor heat shield is discouraged by jetting air out from the front face of the heat shield with sufficient momentum to push approaching fuel droplets or rich fuel-air mixture way from the heat shield.



CASE AND LINER ARRANGEMENT FOR A COMBUSTOR

Thu, 23 Feb 2017 08:00:00 EST

A combustor adapted for use in a gas turbine engine is disclosed. The combustor includes a metallic case forming a cavity and a ceramic liner arranged in the cavity of the metallic case. The ceramic liner defines a combustion chamber in which fuel is burned during operation of a gas turbine engine. The ceramic liner is located in the metallic case using a plurality of cross key connectors.



DEVICES AND SYSTEMS FOR PRODUCING ROTATIONAL ACTUATION

Thu, 23 Feb 2017 08:00:00 EST

Devices and systems for producing rotational actuation are described. More specifically, hydraulic and pneumatic actuators that can produce and control rotational or joint-like motion are described. An actuator may be configured to allow parallel coupling of multiple actuators, and thus increase the range of rotation of the actuators when considered collectively.



Accumulator Driven Accessories

Thu, 23 Feb 2017 08:00:00 EST

A hydraulic circuit is pressurized by a hydraulic pump driven by a power source in a machine. The hydraulic circuit is configured to use pressurized fluid from an accumulator to drive a hydraulic accessory when the hydraulic pump is inactive and the power source is shut down for fuel savings during idle operations. A valve may be configured to selectively supply pressurized hydraulic fluid to the accessory when the pump is inactive.



SEAL ASSEMBLY FOR ROTATIONAL EQUIPMENT

Thu, 23 Feb 2017 08:00:00 EST

Assemblies are provided for rotational equipment. One of these assemblies includes a rotor disk structure, a stator structure and a seal assembly. The rotor disk structure includes a rotor disk and a seal land circumscribing the rotor disk. The stator structure circumscribes the seal land. The seal assembly is configured for sealing a gap between the stator structure and the seal land, where the seal assembly includes a non-contact seal.



Relative Superluminal Propulsion Drive

Thu, 23 Feb 2017 08:00:00 EST

A Relative Superluminal Propulsion Drive that allows for the electro-mechanical means by which a vehicle of mass can be accelerated to and maintain a relative velocity greater than the universal constant C (299,792,458 meters/second, the speed of light in a vacuum) between two fixed points in space when measured from a third fixed point in space. The propulsion drive is an array of electro-mechanical antennas positioned on the forward and aft portion of the vehicle and provides for the force of acceleration to the vehicle by lowering the pressure and density of the energy state of the area in front of the vehicle and increasing the pressure and density of the energy state behind the vehicle through the collection and re-distribution of that part of the electro-magnetic spectrum responsible for maintaining the average pressure density of the void energy of space. In addition to providing propulsion the Relative Superluminal Propulsion Drive accounts for and negates the effects of the Newton's Laws of Motion during both the acceleration and deceleration portion of the travel.



EVAPORATION-DRIVEN ENGINES

Thu, 23 Feb 2017 08:00:00 EST

Evaporation-driven engines are disclosed herein. An example engine can include a water source having a high humidity zone proximate the surface of the water source, a supporting structure, and a hygroscopic material disposed on the supporting structure and configured to generate mechanical force in response to a changing relative humidity. The hygroscopic material can be repeatedly exposed to the high humidity zone and removed from the high humidity zone thereby causing the hygroscopic material to generate mechanical force.



VEHICLE POWERTRAIN WITH ONBOARD CATALYTIC REFORMER

Thu, 23 Feb 2017 08:00:00 EST

Catalyst compositions suitable for use in the exhaust gas recycle stream of an internal combustion engine are provided. Such catalyst compositions typically provide significant amounts of methane in addition to syngas. A reformer incorporating such a catalyst for use in an exhaust gas recycle portion of an internal combustion engine powertrain is described. A powertrain incorporating such a reformer, a method of increasing the octane rating of an exhaust gas recycle stream, and a method of operating an internal combustion engine using methane-assisted combustion are also described.



Turbocharger Blisk/Shaft Joint with Heat Isolation

Thu, 23 Feb 2017 08:00:00 EST

This document discloses an exhaust gas turbocharger, which includes a turbine disk connected to a turbine disk hub. The turbine disk hub extends distally away from the turbine disk and towards a shaft that connects the turbine disk to a compressor. The shaft includes a proximal end that includes a shaft hub that extends proximally away from the shaft and towards the turbine disk hub. The turbine disk. hub is coaxially connected to the shaft hub at a joint. The turbine disk hub and the shaft hub form a cavity between the turbine disk and the proximal end of the shaft. The turbocharger also includes a sleeve having an inner surface that surrounds and engages at least part of the turbine disk hub, at least part of the shaft hub and that further surrounds the joint and partially surrounds the cavity. The sleeve provides structural reinforcement for the joint and additional cooling functions beyond the cooling function provided by the cavity.



METHOD AND SYSTEM FOR CALIBRATING EXHAUST VALVES

Thu, 23 Feb 2017 08:00:00 EST

Various methods and systems are provided for calibrating one or more exhaust valves. In one example, a system comprises an exhaust valve configured to control flow of exhaust gas exiting an engine and a controller configured to calibrate the exhaust valve by commanding the exhaust valve to a fully closed position with a first driving current and measuring a first position of the exhaust valve at the first driving current, commanding the exhaust valve to a fully open position with a second driving current and measuring a second position of the exhaust valve at the second driving current, and generating a map based on a linear function determined from the first driving current, the second driving current, the measured first position, and the measured second position. The controller is further configured to adjust a position of the exhaust valve based on the map.



CONTROLLER FOR INTERNAL COMBUSTION ENGINE

Thu, 23 Feb 2017 08:00:00 EST

A PCV valve that ventilates a crankcase is provided. A three-way catalyst and a NOx storage/reduction catalyst are provided in an exhaust passage. An electronic control unit performs a stoichiometric control and a lean control. When a crankcase ventilation request is issued, a relationship between a ventilation amount of ventilation achieved by the PCV valve and a fuel consumption resulting from the ventilation is calculated. Furthermore, an operational condition under which the ventilation amount meets a required ventilation amount and the fuel consumption is minimized is calculated. The operational condition is calculated so that a constant engine torque is maintained and the air-fuel ratio falls within a range that ensures purification.



NOVEL METHOD FOR DIAGNOSING SCR CATALYST AND FEED GAS QUALITY IN A DIESEL AFTER-TREATMENT SYSTEM

Thu, 23 Feb 2017 08:00:00 EST

An exhaust diagnostic system. The system includes a diesel engine having an exhaust system with a diesel particulate filter (DPF), a diesel oxidation catalyst (DOC), a selective catalytic reduction (SCR) catalyst, a first NOx sensor located upstream of the SCR catalyst and a second NOx sensor located downstream of the SCR catalyst. In addition, an engine control unit (ECU) is in electronic communication with the first NOx sensor and the second NOx sensor. An SCR coordinator can be included and be configured to execute a non-intrusive SCR deNOx efficiency test, an intrusive SCR/DOC deNOx efficiency test and an intrusive DOC non-methane hydrocarbon (NMHC) conversion efficiency test on the exhaust system. As a result of the conversion efficiency tests, a distinction can be made as to whether the SCR catalyst or DOC is failing.



FEED FORWARD EXHAUST THROTTLE AND WASTEGATE CONTROL FOR AN ENGINE

Thu, 23 Feb 2017 08:00:00 EST

Controlling an exhaust gas temperature of an engine. An electronic control unit receives a parameter setpoint command, monitors parameters of an engine using a plurality of sensors, receives measured engine states based on the monitored engine parameters from the plurality of sensors, generates measured engine state estimates and controlled engine state estimates using an engine observer model, determines an observer error based on a difference between the measured engine states and the measured engine state estimates, generates model corrections based on the observer error, generates a desired exhaust throttle valve position using an inverse engine model based on the parameter setpoint command, the controlled engine state estimates, and the model corrections, and adjusts a position of the exhaust throttle valve based on the desired exhaust throttle position.



SYSTEM AND METHOD FOR ABATEMENT OF DYNAMIC PROPERTY CHANGES WITH PROACTIVE DIAGNOSTICS AND CONDITIONING

Thu, 23 Feb 2017 08:00:00 EST

A system includes a fluid transfer system that has instrumentation configured to measure fuel properties; a fluidic buffer volume device located downstream of a fuel sensing point, wherein the fluidic buffer volume device is configured to provide a residence time for the fuel within the fluidic buffer volume device to enable a signal representative of the fuel properties to be communicated to enable adjustment of operating conditions of a fuel consuming system as the fuel is provided; and a controller programmed to receive properties of the fuel consuming system, receive the signal, receive properties of the fluidic buffer volume device, and generate a time-resolved volumetric grid that characterizes fuel transport properties of the fuel for different flow conditions and times based on the properties of the fuel consuming system, the fuel properties, and the properties of the fluidic buffer volume device.



AIRFLOW INJECTION NOZZLE FOR A GAS TURBINE ENGINE

Thu, 23 Feb 2017 08:00:00 EST

An airflow injection nozzle for a stage of airflow injection nozzles located in a turbine section of the gas turbine engine is provided. The airflow injection nozzle includes a leading end positioned opposite of a trailing end, as well as a pressure side positioned opposite of a suction side. The airflow injection nozzle includes an opening positioned on the pressure side oriented generally in a flow direction of the gas turbine engine for injecting a flow of bleed air from a compressor section of the gas turbine engine into the turbine section of the gas turbine engine.



COMPRESSOR BLEED AUXILIARY TURBINE

Thu, 23 Feb 2017 08:00:00 EST

A gas turbine engine is provided having a compressor section, a combustion section, and a turbine section. The compressor section includes one or more compressors and the turbine section includes one or more turbines. The one or more compressors and the one or more turbines are each rotatable about a longitudinal centerline of the gas turbine engine. Additionally, a bleed air flowpath is provided extending between an inlet in airflow communication with the compressor section and an outlet. An auxiliary turbine is positioned in airflow communication with the bleed air flowpath for extracting energy from a flow of bleed air through the bleed air flowpath.



MIXED FLOW TURBOCORE

Thu, 23 Feb 2017 08:00:00 EST

A gas turbine engine is provided having a compressor section, a combustion section located downstream of the compressor section, and a turbine section located downstream of the combustion section. A structural member extends from the compressor section to the turbine section for strengthening one or more components of the gas turbine engine. The structural member also defines a flowpath extending between an inlet in airflow communication with the compressor section and an outlet in airflow communication with the turbine section. The flowpath is configured to provide bleed air from the compressor section to the turbine section to capture at least a portion of the energy in such bleed air.



TURBINE COMBUSTION CHAMBER PRESSURE ASSISTED CONTROL VALVE

Thu, 23 Feb 2017 08:00:00 EST

A combustion turbine control valve comprising a fuel passage to a combustion chamber, a control valve assembly to meter fuel flow to the combustion chamber, the control valve assembly comprising a metering valve body having a valve seat, a metering valve plug movable relative to the body from an open to a closed position, a chamber separated from the flow passage by the plug, the plug having a first area exposed to the chamber, a second area exposed to the flow passage when in the open position and a third area exposed to the flow passage when in the closed position, the first area being greater than the third area and equal to or less than the second area, a passage connecting the chamber and the upstream side of the flow passage, and an actuator to actuate the body between the closed and open positions.



ANTI-COKING COATINGS, PROCESSES THEREFOR, AND HYDROCARBON FLUID PASSAGES PROVIDED THEREWITH

Thu, 23 Feb 2017 08:00:00 EST

A method for providing an anti-coking coating system on a surface at elevated temperatures when contacted by a hydrocarbon fluid, for example, a surface of an interior fuel passage within a fuel nozzle of a type utilized in gas turbine engines, is disclosed. The surface of the passage is rough as a result of the passage being part of a component manufactured by an additive manufacturing (AM) process. In addition, the passage may have a complex geometry of a type that can be fabricated with AM processes, for example, geometries comprising combinations of sharp bends and narrow cross-sections. The coating system comprises at least one ceramic barrier layer and an outermost metallic layer, each of which is formed using a conformal vapor deposition process.



ENGINE COMPONENT FOR A GAS TURBINE ENGINE

Thu, 23 Feb 2017 08:00:00 EST

An engine component for a gas turbine engine includes a film-cooled recess comprising a contoured portion defining a step. A hot surface facing hot combustion gas and a cooling surface facing a cooling fluid flow are fluidly coupled by a passage through the engine component. The passage further comprises an inlet in the cooling surface and an outlet in the step. The inlet, passage and outlet are oriented such that the cooling fluid flowing through the passage and exiting the outlet diffuses within the contoured portion prevents premature mixing out with the hot fluid flow.



FILM COOLING PASSAGE WITH MULTIDIMENSIONAL DIFFUSION

Thu, 23 Feb 2017 08:00:00 EST

A film-cooled component for a gas turbine engine includes a first surface of the component located at a gas path of a gas turbine engine, a second surface of the component defining a component passage, and a cooling airflow passage extending from the second surface to the first surface to convey a cooling airflow from the passage and emit the cooling airflow at the first surface. The cooling airflow passage is curvilinearly diffused in at least two directions relative to a local gas flow direction in the gas path. A method of cooling a component includes flowing a cooling airflow into an internal component passage of the turbine component, conveying the cooling airflow through a cooling airflow passage, diffusing the cooling airflow in at least two directions along the airflow passage, and emitting the cooling airflow at a gas path surface to cool the gas path surface of the component.



VARIABLE GEOMETRIES FLUID SUPPLY CIRCUIT FOR A TURBOMACHINE WITHOUT VOLUMETRIC PUMP

Thu, 23 Feb 2017 08:00:00 EST

A system for supplying a turbomachine with fluid, the supply system including a low-pressure pumping unit intended to increase the pressure of the fluid flowing toward a downstream circuit. The downstream circuit divides at an inlet node, situated between the low-pressure pumping unit and the high-pressure volumetric pump, into a circuit supplying an injection system and a variable geometries supply circuit. The circuit supplying the injection system includes a high-pressure volumetric pump. The variable geometries supply circuit is configured to convey the fluid toward variable geometry from the inlet node to an outlet node connecting the variable geometries supply circuit to the upstream circuit between two pumps of the low-pressure pumping unit.



POWER SYSTEM AND METHODS OF ASSEMBLING THE SAME

Thu, 23 Feb 2017 08:00:00 EST

A power system is provided. The power system includes a gas turbine assembly having a compressor, a combustor, and a turbine coupled in serial flow arrangement. The compressor has a compressor inlet. The power system also includes an electrostatic precipitation system coupled to the gas turbine assembly upstream from the compressor inlet. The compressor is oriented to receive working gases discharged from the electrostatic precipitation system to facilitate removing entrained matter from the working gases flowing into the compressor inlet.



APPARATUS AND METHOD FOR AIR PARTICLE SEPARATOR IN GAS TURBINE ENGINE

Thu, 23 Feb 2017 08:00:00 EST

An engine and particle decelerator is provided herein. The engine having: an inlet opening for directing air towards a compressor of the engine; and a particle decelerator located between the inlet opening and the compressor such that air travelling towards the compressor from the inlet opening must travel through the particle decelerator and wherein an area of the particle decelerator is greater than an inlet and an outlet of the particle decelerator.



SYSTEM AND METHOD FOR DE-ICING A GAS TURBINE ENGINE

Thu, 23 Feb 2017 08:00:00 EST

The invention relates generally to gas turbine engines used for electrical power generation. More specifically, embodiments of the present invention provide ways for improving gas turbine engine performance by reducing ice build-up on the inlet filter housing through heated air injection.



COMPOUND CYCLE ENGINE

Thu, 23 Feb 2017 08:00:00 EST

A compound cycle engine having a rotary internal combustion engine, a first turbine, and a second turbine is discussed. The exhaust port of the internal combustion engine is in fluid communication with the flowpath of the first turbine upstream of its rotor. The rotors of the first turbine and of each rotary unit drive a common load. The inlet of the second turbine is in fluid communication with the flowpath of the first turbine downstream of its rotor. The first turbine is configured as a velocity turbine and the first turbine has a pressure ratio smaller than that of the second turbine. A method of compounding a rotary engine is also discussed.



LOADED TURBOCHARGER TURBINE WASTEGATE CONTROL LINKAGE JOINTS

Thu, 23 Feb 2017 08:00:00 EST

An assembly can include a turbine housing that includes a bore, a wastegate seat and a wastegate passage that extends to the wastegate seat; a bushing disposed at least in part in the bore; a rotatable wastegate shaft received at least in part by the bushing; a wastegate plug that extends from the wastegate shaft; a control arm operatively coupled to the wastegate shaft; a control link operatively coupled to the control arm; and a biasing element coupled to the control arm and to the control link.



CONTROLLER FOR SUPERCHARGER-EQUIPPED INTERNAL COMBUSTION ENGINE

Thu, 23 Feb 2017 08:00:00 EST

A controller, for a supercharger-equipped internal combustion engine, that can improve the feedback response of compressor driving force is provided. In a controller, inertial force produced by an inertial moment of a supercharger is calculated, based on a real rotation speed of the supercharger; then, driving force feedback control is implemented in which a gate valve control value, which is a control value for a gate valve actuator, is changed so that an addition value obtained by adding the inertial force to the real compressor driving force approaches a target compressor driving force.



CONTROLLER FOR SUPERCHARGER-EQUIPPED INTERNAL COMBUSTION ENGINE AND CONTROL METHOD THEREOF

Thu, 23 Feb 2017 08:00:00 EST

The objective of the present invention is to provide a controller for a supercharger-equipped internal combustion engine and a control method that can reduce man-hours for data measurement and matching, which are required to perform while the internal combustion engine and the supercharger are combined. In a controller, a target turbine flow rate for realizing a target compressor driving force is calculated; a target wastegate flow rate is calculated based on an exhaust gas flow rate and the target turbine flow rate; a target turbine-upstream pressure is calculated based on a target before/after-turbine pressure ratio for realizing the target compressor driving force and a turbine-downstream pressure; a target gate effective opening area is calculated based on the target wastegate flow rate, the target before/after-turbine pressure ratio, and the target turbine-upstream pressure; then, a gate valve control value is calculated.



TURBOCHARGER WITH COMPRESSOR OPERABLE IN EITHER SINGLE-STAGE MODE OR TWO-STAGE SERIAL MODE

Thu, 23 Feb 2017 08:00:00 EST

A turbocharger includes a two-stage serial compressor having first and second impellers, with a crossover duct for leading air from the first impeller into the second impeller for further compression. The compressor housing also defines a bypass duct from the crossover duct to the air discharge duct from the compressor, and a bypass valve disposed in the bypass duct. Under certain operating conditions (such as high-flow, low-pressure-ratio conditions) the bypass valve can be opened to bypass the second impeller, such that the compressor behaves like a single-stage compressor. At other operating conditions, the bypass valve is closed so that the compressor provides two-stage compression for higher pressure ratios.



INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING INTERNAL COMBUSTION ENGINE

Thu, 23 Feb 2017 08:00:00 EST

An internal combustion engine includes an internal combustion engine main body, an intake passage, an exhaust passage, a supercharger, an intake circulation passage, an exhaust circulation passage, an intake circulation valve, an exhaust circulation valve and a controller. The supercharger is provided on the intake passage and the exhaust passage. The supercharger supplies compressed intake air to the internal combustion engine main body. The intake circulation passage connects the sections of the intake passage that are upstream and downstream of the supercharger. The exhaust circulation passage connects sections of the exhaust passage that are upstream and downstream of the supercharger. The intake circulation valve is provided in the intake circulation passage. The exhaust circulation valve is provided in the exhaust circulation passage. The controller is programmed to close the exhaust circulation valve in accordance with an opening degree of the intake circulation valve.



METHOD AND SYSTEM TO REDUCE CHARGE AIR COOLER CONDENSATION

Thu, 23 Feb 2017 08:00:00 EST

Methods and systems for operating an engine that includes a compressor and charge air cooler are disclosed. In one example, air flow through the charge air cooler is increased in response to condensation accumulating in the charge air cooler without increasing engine torque. Air flow through the charge air cooler is increased to gradually reduce condensation within the charge air cooler.



METHOD FOR PURGING CONDENSATE FROM A CHARGE AIR COOLER

Thu, 23 Feb 2017 08:00:00 EST

Methods and systems are provided for cleaning out condensate stored at a charge air cooler. In response to increased condensate accumulation at a charge air cooler, airflow through the engine is increased to purge the condensate while an engine actuator is adjusted to maintain engine torque. Combustion stability issues of engine cylinders are addressed by adjusting fueling of each cylinder individually during condensate ingestion.



Exhaust Manifold

Thu, 23 Feb 2017 08:00:00 EST

An exhaust manifold for attaching to exhaust ports of an engine, the manifold having a plenum and a plurality of exhaust runners each associated with a respective exhaust port, the plenum having a progressively tapering cross sectional area along its length as defined by the direction along which successive exhaust runners connect to the plenum and a connector at its larger downstream end, for connecting to further components of the exhaust system, characterized in that the lengths of the gas flow paths in all the exhaust runners, as measured from the end of each runner adjacent the exhaust port to an interior wall of the plenum opposite the other end of the runner, are substantially equal to one another.



MANIFOLD

Thu, 23 Feb 2017 08:00:00 EST

A manifold system for an internal combustion engine, comprising a housing designed as a collecting manifold, which housing has two inlet openings and an outlet opening for connecting two outlets of an internal combustion engine to an exhaust gas system in regard to flow and at least one connection opening provided on the housing for connecting to an outer shell of a double-shell air-gap-insulated manifold, and comprising at least one air-gap-insulated manifold connected to the connection opening, which air-gap-insulated manifold has an inner shell having an inlet opening for connecting to an outlet of the internal combustion engine in regard to flow and having an outer shell, wherein all air-gap-insulated manifolds are completely formed from sheet metal and are structurally or geometrically identical and, on the housing, the size of a distance A2 between one of the two inlet openings and the outlet opening is between 30 mm and 300 mm or between 50 mm and 120 mm.



DIAGNOSTIC METHODS FOR A HIGH EFFICIENCY EXHAUST AFTERTREATMENT SYSTEM

Thu, 23 Feb 2017 08:00:00 EST

An apparatus includes a nitrogen oxide (NOx) module and a selective catalytic reduction (SCR) diagnostic module. The NOx module is in exhaust gas communication with an exhaust flow of an exhaust aftertreatment system from an engine. The NOx module is structured to interpret NOx data indicative of an amount of NOx exiting the engine and an amount of NOx exiting the exhaust aftertreatment system, and determine a NOx conversion efficiency fault is present based on the amount of NOx exiting the engine and the amount of NOx exiting the exhaust aftertreatment system. The SCR diagnostic module is structured to determine at least one of a SCR catalyst and a diesel particulate filter including a coating of a SCR reaction catalyst (DPF-SCR) are responsible for the NOx conversion efficiency fault based on at least one of a reductant slip amount and a NOx conversion value across at least one of the SCR catalyst and the DPF-SCR.



METHOD TO LIMIT TEMPERATURE INCREASE IN A CATALYST AND DETECT A RESTRICTED EXHAUST PATH IN A VEHICLE

Thu, 23 Feb 2017 08:00:00 EST

A vehicle has an engine, an exhaust aftertreatment system, an electric machine, and a controller configured to, in response to an actual engine torque output being less than an inferred engine torque, shut down the engine. A vehicle has an engine, an exhaust aftertreatment system, an electric machine, and a controller configured to, in response to an actual engine torque output being less than a first threshold and a torque request to the engine being greater than a second threshold, set a diagnostic code. A method includes receiving an actual engine torque output, receiving an engine torque request, and shutting down the engine when the actual engine torque output is less than a first threshold and the engine torque request is greater than a second threshold for a predetermined time period to limit temperature increase of a catalyst.



CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD

Thu, 23 Feb 2017 08:00:00 EST

A control system includes an ECU that controls supply of fuel from an addition valve and supply of fuel from an injection valve, estimates or detects a degree of end-face clogging on an exhaust-gas inflow side of a NOx catalyst, and sets an inlet temperature of the NOx catalyst by use of the fuel supplied from the injection valve to a higher level and sets an amount of the fuel supplied from the addition valve to a smaller value in a case where the degree of end-face clogging is equal to or larger than a predetermined value, compared to the case where the degree of end-face clogging is smaller than the predetermined value, when there also is a request for regeneration of an exhaust purification filter and/or a request for regeneration of the NOx catalyst.



METHOD FOR REGENERATING CATALYST FOR OXIDIZING COMPRESSED NATURAL GAS VEHICLE EXHAUST GAS

Thu, 23 Feb 2017 08:00:00 EST

This invention relates to a method of regenerating a deactivated catalyst, which carries precious metal components including platinum and palladium and which is used to purify a gas exhausted from a compressed natural gas lean-burn engine. The method includes creating a reduction atmosphere over the catalyst. The creating the reduction atmosphere over the catalyst includes controlling an air-fuel ratio or directly injecting CNG fuel into the catalyst.



Reductant Supply System

Thu, 23 Feb 2017 08:00:00 EST

A reductant supply system for an exhaust aftertreatment system is disclosed. The reductant supply system may include a controller configured to receive an engine system operation signal and transmit a reductant delivery signal in response to the engine system operation signal, an injector configured to dispense a reductant fluid into an exhaust gas flow of the exhaust aftertreatment system in response to the reductant delivery signal, and a pump configured to actuate between an off condition and an on condition in response to the reductant delivery signal. Furthermore, the reductant supply system may include a recycle line and a two-way valve positioned in the recycle line configured to actuate between a closed position and an open position in response to the reductant delivery signal.



EMISSION CONTROL SYSTEM AND EMISSION CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

Thu, 23 Feb 2017 08:00:00 EST

An emission control system and method execute a regeneration control such that a catalyst device recovers from poisoning, in a first control mode in which a temperature raising operation and a releasing operation are alternately repeated and in a second control mode in which the temperature raising operation and the releasing operation are alternately repeated. In the first control mode, the temperature raising operation is performed by post injection from a fuel injector. In the second control mode, the temperature raising operation is performed by adding fuel into exhaust gas from an addition valve such that the HC concentration in exhaust gas oscillates with an amplitude within a first specified range and a cycle within a second specified range. The control mode is switched from the first control mode to the second control mode during the regeneration control.



COMBINED CYCLE POWER SYSTEM, AND A METHOD OF OPERATING A COMBINED CYCLE POWER SYSTEM

Thu, 23 Feb 2017 08:00:00 EST

A combined cycle power system includes a gas turbine exhausting an exhaust gas, a heat recovery steam generator including, a first economizer, a first steam generator, a second economizer, a second steam generator, a steam turbine which is driven by the steam generated at the first steam generator and the second steam generator, and a flasher which generates a first flash steam and a first drain water by flashing a portion of the water heated by the first economizer.



VEHICLE HEAT RECOVERY SYSTEM

Thu, 23 Feb 2017 08:00:00 EST

A system for an engine (101) comprises a heat recovery system and a gaseous fuel supply system. The heat recovery system comprises a first reservoir (104) for fluid, at least one evaporator (121) for transferring heat from an engine to the fluid, a vapour expander (129) for converting fluid vapour energy into motive power, and a condenser (134). The gaseous fuel supply system comprises a second reservoir (90) for liquefied gaseous fuel and a fuel evaporator (91) for expanding liquefied gaseous fuel into gaseous fuel for the engine. The condenser (134) is in thermal contact with the fuel evaporator (91).



ROTOR HIGH-AND-LOW PRESSURE POWER APPARATUS AND WORKING METHOD THEREOF

Thu, 23 Feb 2017 08:00:00 EST

A rotor high-and-low pressure power apparatus, comprises a heat collector, an insulating pipe, a gasification reactor, an atomizer, a cylinder, a triangular rotor, an inner gear ring, a gear, an output shall, a one-way an intake valve, a liquid storage tank, a pressure valve, an insulating layer, an automatic exhaust valve, a housing, a heat sink and an exhaust control valve. The triangular rotor is arranged within the housing. The inner gear ring and the gear matching with the inner gear ring are arranged at the center of the triangular rotor. The gear is fixed on the output shaft. The triangular rotor divides the cylinder into three independent and equal sections. The gear ratio of the inner gear ring and the gear is 3:2. The rotor provided with a rotor engine works three times per rotation. The ratio of horsepower to volume is high.



NON-CONTACT SEAL ASSEMBLY FOR ROTATIONAL EQUIPMENT

Thu, 23 Feb 2017 08:00:00 EST

Assemblies are provided for rotational equipment. One of these assemblies includes a bladed rotor assembly, a stator vane assembly, a fixed stator structure and a seal assembly. The bladed rotor assembly includes a rotor disk structure. The stator vane assembly is disposed adjacent the bladed rotor assembly. The fixed stator structure is connected to and radially within the stator vane assembly. The seal assembly is configured for sealing a gap between the stator structure and the rotor disk structure, wherein the seal assembly includes a non-contact seal.



GAS TURBINE ENGINE WITH FAN VARIABLE AREA NOZZLE FOR LOW FAN PRESSURE RATIO

Thu, 23 Feb 2017 08:00:00 EST

A gas turbine engine includes a core nacelle defined about an engine centerline axis. A core engine is at least partially disposed within the core nacelle. The core engine includes a first turbine section driving a first compressor section and a second turbine section driving a second compressor section. A fan section with a plurality of fan blades. A gear system is driven through a shaft coupled to the first turbine section. The gear system provides a speed reduction between the first turbine section and the fan section of greater than 2.3. A fan nacelle is mounted at least partially around said fan section and the core nacelle to define a fan bypass flow path for a fan bypass airflow. The fan bypass airflow has a fan pressure ratio of the fan bypass airflow during engine operation less than 1.45. A variable area fan nozzle is disposed at a trailing edge of the fan nacelle. The variable area fan nozzle includes a first nacelle section and a second nacelle section. The second nacelle section is movable relative to the first nacelle section to vary an exit area at the trailing edge of the fan nacelle to maintain the fan pressure ratio during engine operation.



ULTRA EFFICIENT TURBO-COMPRESSION COOLING

Thu, 16 Feb 2017 08:00:00 EST

A turbo-compression cooling system includes a power cycle and a cooling cycle coupled one to the other. The power cycle implements a waste heat waste heat exchanger configured to evaporate a first working fluid and a turbine configured to receive the evaporated working fluid. The turbine is configured to rotate as the first working fluid expands to a lower pressure. A condenser condenses the first working fluid to a saturated liquid and a pump pumps the saturated liquid to the waste heat waste heat exchanger. The cooling cycle implements a compressor increasing the pressure of a second working fluid, a condenser condensing the second working fluid to a saturated liquid upon exiting the compressor, an expansion valve expanding the second working fluid to a lower pressure, and an evaporator rejecting heat from a circulating fluid to the second working fluid, thereby cooling the circulating fluid.



COMBUSTOR BURNER ARRANGEMENT

Thu, 16 Feb 2017 08:00:00 EST

A fuel lance for a burner of a combustor has a fuel lance body defining a fuel flow passage and a liquid fuel tip attached thereto and in flow communication with fuel flow passage. The liquid fuel tip has a fuel outlet and an array of air passages having outlets which are arranged outside a blank sector of a circumference around the fuel outlet, the blank sector defined by an angle from 30° to 160°. A burner includes the fuel lance and the igniter and a main air flow passage to direct at least a part of a main air flow over the fuel lance and over the igniter, the blank sector has a centre-line angled between +120° and −120° from a radial line from the axis and passing through the fuel lance. A method includes rotating the fuel lance between a start-up condition and a second condition.