Abstract: A method for operating a wind turbine (10). The wind turbine (10) is operated with variable rotational speed between predeterminable minimum and maximum rotational speeds. A characteristic variable (51) of an oscillation of the wind turbine (10) is detected. The wind turbine (10) includes a tower (14) and a rotor (13). An open-loop or closed-loop control device (36, 50) provides open-loop control or closed-loop control of the rotational speed of the rotor (13) between a minimum rotational speed and a maximum rotational speed during a power-supplying operation of the wind turbine. A sensor (40) detects a characteristic variable (51) of an oscillation of the wind turbine (10) and the minimum rotational speed is changed depending on the characteristic value (51) of the oscillation. The minimum rotational speed is altered depending on the characteristic variable (51) of the oscillation by the open-loop or closed-loop control device (36, 50).

Abstract: A self-aligning memory alloy wire actuator has a memory alloy wire having first and second ends with at least one terminal coupled to one end of the memory alloy wire. The terminal includes two wings and an extended piece connected in the shape of a T. The two wings are disposed on opposite sides of the extended piece and perpendicular to the extended piece. Each wing comprises top and bottom surfaces, a front surface, and an outside end. The top surfaces of the two wings lie on a common top plane and the front surfaces of the two wings lie on a common front plane. The memory alloy wire is coupled to the extended piece of the terminal.

Abstract: A method for controlling regeneration within an after-treatment component of an engine comprises receiving a signal indicative of whether the engine is in an operating state or a non-operating state and detecting, based on the signal, when the engine has departed an operating state and entered a non-operating state. When the engine has departed an operating state and entered a non-operating state, a regeneration event is initiated. The regeneration event comprises causing a stream of air to flow through the after-treatment component and initiating a flow of fuel into the stream of air.

Abstract: An engine-waste-heat utilization device includes a Rankine cycle which includes a heat exchanger through which cooling water coming out from an engine flows to recover waste-heat of the engine to refrigerant, an expander which generates power using the refrigerant coming out from the heat exchanger, a condenser which condenses the refrigerant coming out from the expander and a refrigerant pump which supplies the refrigerant coming out from the condenser to the heat exchanger, and a cooling water passage in which the cooling water having a higher temperature flows when the Rankine cycle is operated than when the Rankine cycle is not operated.

Abstract: An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication with the conduit to receive exhaust produced by the engine. The catalyst is operable to reduce one or more constituents of the exhaust.

Abstract: A vane carrier temperature control system for use in a gas turbine engine includes a first cooling air source, a second cooling air source, and an air temperature control system. The first cooling air source supplies a first portion of vane carrier cooling air extracted from a compressor section of the engine to a first section of a vane carrier that supports a plurality of rows of vanes within a turbine section of the engine. The second cooling air source supplies a second portion of vane carrier cooling air extracted from the compressor section to a second section of the vane carrier spaced from the first section in an axial direction defined by a direction of hot working gas flow through the turbine section. The air temperature control system controls a temperature of at least one of the first and second portions of vane carrier cooling air.

Abstract: A motor grader includes an engine, a power transmission apparatus, a selective catalytic reduction apparatus, a fuel tank and a reducing agent tank. The power transmission apparatus is configured to transmit power from the engine. The selective catalytic reduction apparatus is configured to process exhaust from the engine. The fuel tank is configured to retain fuel. The reducing agent tank is configured to retain a reducing agent. The fuel tank is arranged so as to at least partially overlap with the engine in a planar view. The fuel tank is arranged between the power transmission apparatus and the reducing agent tank in a vehicle front to back direction.

Abstract: Wind turbine rotor comprising a hub, a plurality of blades, and at least one pitch system for rotating a blade substantially along its longitudinal axis and comprising one or more pitch brakes, wherein a pitch brake comprises at least a brake disc element and a first brake pad, and wherein one of the hub and a blade comprises said brake disc element and the other of the hub and blade comprises said first brake pad, the brake disc element and brake pad being arranged such that when the blade is substantially in or near the below rated pitch position the brake disc element and pad are in frictional contact with each other.

Abstract: A control device for an internal combustion engine in which an exhaust purification device is provided the control device controls the air-fuel ratio of exhaust gas flowing into an exhaust purification device when the temperature of a three-way catalyst belongs to a temperature range in which it is not less than an activation onset temperature and is less than an activation complete temperature. The control device controls the air-fuel ratio of exhaust gas flowing into the exhaust purification device to a first air-fuel ratio which is lower than or equal to a theoretical air-fuel ratio when the temperature of the three-way catalyst belongs to a low-side temperature region, and controls the air-fuel ratio of exhaust gas flowing into the exhaust purification device to a second air-fuel ratio which is higher than the theoretical air-fuel ratio when the temperature of the three-way catalyst belongs to a high-side temperature region.

Abstract: System and method for converting energy; the system comprising: an acoustic resonator; a phase-exchange device configured for forming across a section of said resonator a concentration gradient of a first substance in a gaseous medium contained by said resonator, to thereby generate a pressure wave within said resonator; and a conversion device for converting mechanical energy constituted by said pressure wave to non-mechanical energy.

Abstract: A dual compressor turbocharger includes two compressors. One compressor supplies fuel pressure, and one compressor supplies air pressure. The dual compressor turbocharger includes a turbine driven by exhaust of an engine and a shaft coupled to the turbine. The first compressor is mounted on the shaft and includes a first inlet coupled to an air supply and a first outlet coupled to an air intake of the engine. The second compressor is mounted on the shaft and includes a second inlet coupled to a fuel supply and a second outlet coupled to a fuel supply rail of the engine.

Abstract: The invention relates to a device and method for metering a liquid, in particular a fuel, into an exhaust gas tract of an internal combustion engine, wherein the device comprises at least one injection valve that can be closed by a closing member and that has cooling circuit for regulating the temperature in the injection valve, and wherein a throttle element is connected upstream of the injection valve to control, by closed loop or open loop, the quantity of a volume flow of the liquid through the injection valve, in particular through the cooling circuit of the injection valve, wherein the injection valve opens when the throttle element de-throttles the volume flow of the liquid to the injection valve.

Abstract: An engine including a WHR system includes a clutch positioned to engage or disengage a WHR feedpump that moves working fluid through a WHR circuit. The clutch engages or disengages the feedpump under certain operating conditions of the engine and/or the WHR system, and/or at the request of an operator of the engine. Conditions may include cool or cold components, and insufficient working fluid. The operator may also request the clutch be disengaged, such as might be advantageous if the operator detects an operational problem with the WHR system or determines there is an advantage to operating the engine without the WHR system.

Abstract: An actuator includes a drum defining a longitudinal axis and having axially opposed first and second end portions that are rotatable relative to one another about the longitudinal axis. A shape memory element is wrapped around the drum and extends from the first end portion of the drum to the second end portion of the drum to actuate relative rotation of the first and second end portions of the drum about the longitudinal axis by activation of the shape memory element.

Abstract: The present invention relates to a dual-passage open-type solar heat absorber having a porous plate array, and more particularly, to a dual-passage open-type solar heat absorber which is formed in a form of a rectangular-shaped container in order to increase a contact area with collected sunlight and easily extend in a lateral direction or in a form of a circular-shaped container which is advantageous when a pressure is applied thereto, and which includes a main body formed in a formed of a rectangular or circular-shaped container by using a three-layered tube to form a dual passage therein so that heat is prevented from being lost through an outer wall.

Abstract: An apparatus for mitigating fouling within a heat exchanger device includes an internal combustion engine and an external exhaust gas recirculation (EGR) circuit. The internal combustion engine is fluidly coupled to an intake gas manifold upstream of the engine and an exhaust gas manifold downstream of the engine. The EGR circuit is fluidly coupled to the exhaust gas manifold at a first end and is configured to selectively route back exhaust gas flow as EGR flow into the intake gas manifold at a second end. The EGR circuit includes the heat exchanger device for cooling the EGR flow prior to entering the intake manifold and a surface deposit removing device configured to remove surface deposit build-up from within the heat exchanger device when the surface deposit removing device is activated.

Abstract: The turbine includes: a shaft body supported rotatably; a plurality of turbine blade members; a casing covering the shaft body and the turbine blade row; an outer ring member that is provided on an inner periphery of the casing and includes an inner peripheral portion in which a cross-section having a uneven shape is continuous in a circumferential direction; a plurality of turbine vane members that each has a shroud fitted into the inner peripheral portion of the outer ring member and a turbine vane main body extending from the shroud to a radially inward side; and a plate member that connects at least some of the plurality of turbine vane members and covers one side of the shrouds in the axial direction, thereby sealing a shroud gap formed between the shrouds adjacent to each other in the circumferential direction.

Abstract: A marine propulsion device and a method of making a marine propulsion device including an internal combustion engine that discharges exhaust gases. The internal combustion engine has first and second castings. A first exhaust flow passage is in the first casting and a second exhaust flow passage is in the second casting. The second exhaust flow passage has a first and second leg that are transversely oriented to each other. A catalyst is disposed in the second exhaust flow passage and configured to treat the exhaust gases. A flow control element is between the first and second flow passages. The flow control element forms a smooth transition that is devoid of edges such that the exhaust gases flow across and are dispersed by the flow control element before being treated by the catalyst.

Abstract: A deterioration diagnosis device for an oxidation catalyst includes: a multi-gas sensor disposed in an exhaust passage downstream of an oxidation catalyst, the multi-gas sensor including a NO2 sensor unit and a NOX sensor unit, the NO2 sensor unit directly detecting a NO2 concentration in exhaust gas after passing through the oxidation catalyst, and the NOX sensor unit directly detecting a NOX concentration in the exhaust gas; an NO concentration calculation unit configured to calculate an NO concentration in the exhaust gas after passing through the oxidation catalyst based on the NO2 concentration and the NOX concentration; and a deterioration judgment unit configured to determine a deterioration degree of the oxidation catalyst from an evaluation value based on the NO concentration calculated by the NO concentration calculation unit.

Abstract: An internal combustion engine with multiple cylinders and injection valves that are provided for the cylinders and that meter fuel also comprises an exhaust gas tract in which an exhaust gas catalytic converter is arranged. A characteristic value (OSC) of an oxygen storage capacity of the exhaust gas catalytic converter is determined. In accordance with the characteristic value (OSC), a heating measure (HM) for heating the exhaust gas catalytic converter is carried out.