Abstract: A heat exchanger (HEX) arrangement for cooling air in a gas turbine engine is provided. The HEX arrangement may include a heat exchanger coupled to a plurality of ducts comprising a hot-side inlet duct and a hot-side outlet duct. The hot-side outlet duct may be in fluid communication with a compressor section of the gas turbine engine and in mechanical communication with a diffuser case. The HEX arrangement may further include a plurality of supporting links coupled between the heat exchanger and the gas turbine engine for securing the heat exchanger relative to the gas turbine engine. The supporting links may comprise a statically determined system. A spring rate ratio of between 1% and 30% may exist between the plurality of ducts and the plurality of supporting links.

Abstract: A gas turbine engine includes a first fan, a second fan spaced axially from the first fan, a turbine-driven fan shaft and an epicyclic gear train coupled to be driven by the turbine-driven fan shaft and coupled to drive the first fan and the second fan. The epicyclic gear train includes a carrier that supports star gears that mesh with a sun gear, and a ring gear that surrounds and meshes with the star gears. The star gears are supported on respective journal bearings.

Abstract: A geared architecture for a gas turbine comprising an output shaft for connection with a fan, an input shaft and a gearbox connecting the input shaft with the output shaft. The gearbox has a forward planet carrier plate supported by a forward radially fixed bearing structure and a rearward planet carrier plate supported by a rearward radially fixed bearing structure. By supporting the carrier plates on radially fixed bearing structures the planet carriers can rotate about their own axis to lower vibration and mesh forces within the gearbox.

Abstract: The invention relates to a method of operating a gas turbine assembly, which includes a compressor, a combustor and a gas turbine. The method includes operating the gas turbine assembly at a partial load with respect to a base load of the gas turbine assembly; bypassing a portion of blow-off air from the compressor; and introducing the portion of blow-off air into an exhaust gas duct after the gas turbine. The gas turbine assembly, when operating at partial load, can maintain the air-to-fuel ratio approximately constant and hence to control the combustion flame temperature at a level where emissions are kept below the permission limit.

Abstract: A method for controlling engine torque in a vehicle during a default throttle condition includes determining whether a throttle of the engine is in a default throttle condition, determining whether the engine is producing more torque than desired if the throttle of the engine is in the default throttle condition, and applying an accessory load to the engine if the engine is producing more torque than desired in the default throttle condition.

Abstract: A control valve (10) for an exhaust system of a motor vehicle, especially a motorbike, comprising a valve housing (11) in which a shut-off body (12) is movably arranged for changing the cross-section of a flow channel (21) of the exhaust system, wherein expansion play in the radial and axial direction is provided between the shut-off body (12) and the valve housing (11), which allows thermal expansion of the shut-off body (12) within the valve housing (11), wherein the shut-off body (12) comprises a perforated ball (12a).

Abstract: A method for adapting a valve actuating variable for controlling an intake and/or an exhaust valve of an internal combustion engine, including setting a predetermined operating state of the internal combustion engine; determining a charge specification, which specifies an instantaneous air charge in one of the cylinders of the internal combustion engine, in the predetermined operating state; and adapting the valve actuating variable as a function of the charge specification.

Abstract: An engine system includes: a hydraulic valve stop mechanism configured to switch states of an intake valve and exhaust valve of a same stopped cylinder; a hydraulic pressure changing device configured to change hydraulic pressure supplied to the valve stop mechanism; and a valve control portion configured to control the hydraulic pressure changing device. When a return from a reduced-cylinder operation to an all-cylinder operation is requested, and an engine revolution is less than a reference revolution, the hydraulic pressure is changed such that opening of one of the valves of the stopped cylinder able to restart at an earlier stage is first restarted. When the return is requested, and the engine revolution is not less than the reference revolution, the hydraulic pressure is changed such that opening of the exhaust valve of the stopped cylinder is restarted before opening of the intake valve.

Abstract: A control device for an internal-combustion engine includes circuitry. The circuitry is configured to calculate, in accordance with an operating state of the internal-combustion engine, a basic supercharging pressure of intake gas generated by a supercharger provided in the internal-combustion engine. The circuitry is configured to acquire a flow rate change state parameter that correlates with a change state of the flow rate of the intake gas controlled by a flow rate control mechanism provided in the internal-combustion engine. The circuitry is configured to calculate a correction value in accordance with the flow rate change state parameter. The circuitry is configured to calculate an estimated supercharging pressure of the intake gas by correcting the basic supercharging pressure with the correction value. The circuitry is configured to control operation of the internal-combustion engine using the estimated supercharging pressure.

Abstract: A control system and method to control cold transient response of an engine. The control system can provide compressed air from a compressed air source to a turbocharger to boost speed of a turbine of the turbocharger, based on determined desired operating characteristics associated with upstream or downstream operation of the engine relative to the turbocharger. The control system can receive data corresponding to actual operating characteristics associated with the upstream or downstream operation of the engine relative to the turbocharger, compare the desired operating characteristics with the data corresponding to actual operating characteristics, and control the air assist from the compressed air source based on the comparison.

Abstract: An internal combustion engine includes a number of cylinders and a controller operably connected to interpret operating parameters related to the operation of the number of cylinders. A cylinder torque adjustment for each cylinder is determined from the operating parameters to provide a torque balancing response that reduces noise, vibration and/or harshness in engine operation.

Abstract: A method for identifying a longitudinal jerking of a motor vehicle is provided, wherein a wheel speed of a driven wheel and a wheel speed of a non-driven wheel are recorded and wherein the longitudinal jerking of the motor vehicle is detected on the basis of a change in the measured wheel speeds. The detection of the longitudinal jerking is improved by comparing the change in the wheel speed of the driven wheel with the change in the wheel speed of the non-driven wheel in order to detect a longitudinal jerking as a result of a vibration stimulation in the drive train.

Abstract: The engine control device comprises a basic target torque-deciding part for deciding a basic target torque based on a driving state of a vehicle, a torque reduction amount-deciding part for deciding a torque reduction amount based on a steering wheel operation state, an TCM for deciding a torque-down demand amount, based on a driving state of the vehicle other than the steering wheel operation state, and a final target torque-deciding part for deciding a final target torque, based on the decided basic target torque, the decided torque reduction amount and the decided torque-down demand amount, wherein the final target torque-deciding part is operable, when there is a torque-down demand, to restrict a change in the final target torque corresponding to a change in the torque reduction amount.

Abstract: The invention relates to a procedure for a switching pressure calculation at a metering valve of a fuel metering device for metering fuel into an exhaust gas system of a combustion engine with a component that is assigned to the exhaust gas system of the combustion engine for a regeneration, for a temperature impinge and/or for a thermo management, whereby the fuel is injected before this component in streaming direction of the exhaust gas. The invention concerns furthermore a corresponding device for implementing the procedure.

Abstract: A stop control system includes a direct-injection type internal combustion engine, a fuel injection valve, an accessory configured to be driven by the internal combustion engine, and a controller configured to operate the internal combustion engine. The controller is configured to control the accessory during a period from start of fuel cut to a moment immediately after the internal combustion engine stops, such that when the internal combustion engine stops completely, the output shaft comes, in a rotational direction, to a target stop position where an intake port is closed.

Abstract: An internal combustion engine comprises an exhaust purification catalyst arranged in an exhaust passage of the internal combustion engine; an upstream side air-fuel ratio sensor for detecting an air-fuel ratio of exhaust gas flowing into the exhaust purification catalyst; and a downstream side air-fuel ratio sensor for detecting an air-fuel ratio of exhaust gas flowing out from the exhaust purification catalyst. An abnormality diagnosis system of air-fuel ratio sensors judges that at least one of the air-fuel ratio sensors has become abnormal when a difference or ratio between an output value of said upstream side air-fuel ratio sensor and an output value of said downstream side air-fuel ratio sensor becomes outside a predetermined range of normal difference or predetermined range of normal ratio during atmospheric gas introduction control where the exhaust gas flowing into the exhaust purification catalyst becomes atmospheric gas.

Abstract: An intake system may include a purge supply device; an exhaust gas recirculation device; and a pressure adjustor. The purge supply device may include a purge path connected to an intake path of an engine mounted on a vehicle, and be configured to supply evaporative fuel from a fuel tank to the intake path through the purge path. The exhaust gas recirculation device may include a circulation path connected to the intake path between a throttle valve and a first connecting position connecting the intake path and the purge path, and be configured to supply to the intake path a part of exhaust gas of the engine through the circulation path. The pressure adjustor may be disposed between the first connecting position and a second connecting position connecting the intake path and the circulation path, and be configured to adjust a pressure at the second connecting position.

Abstract: A remaining fuel amount warning device for a vehicle, the remaining fuel amount warning device giving a warning that an amount of fuel remaining in a fuel tank is smaller than a predetermined value on the basis of output of a fuel gauge measuring the remaining fuel amount, includes combustion state changing device for changing the combustion state of an engine. When the remaining fuel amount becomes smaller than the predetermined value, the remaining fuel amount warning device performs remaining amount warning control that produces vibration different than during normal operation by changing the combustion state of the engine by the combustion state changing device. A starter switch for starting the engine is made to serve also as a warning acknowledging button for stopping the remaining amount warning control for a predetermined time on the basis of an operation by an occupant.

Abstract: Methods and systems are provided for performing rationality check of a hydrocarbon sensor in an evaporative emission control system. In one example, a method may include sensing fuel vapors vented from a fuel vapor canister to atmosphere via the sensor, and performing sensor rationality check by flowing fuel vapors from a fuel tank to the fuel vapor canister via the sensor during loading of the fuel vapor canister.

Abstract: A control system of an internal combustion engine includes an electronic control unit. The electronic control unit is configured to: (i) obtain a detection value of a fuel pressure sensor at fixed sampling time intervals; (ii) calculate a center fuel pressure value of a pulsation of the fuel pressure, based on at least a first latest fuel pressure value and a second latest fuel pressure value as detection values of the fuel pressure sensor, (iii) calculate an amplitude of the pulsation of the fuel pressure, based on at least the second latest fuel pressure value and the first latest fuel pressure value; (iv) calculate an initial phase of the pulsation of the fuel pressure, based on at least one of the second latest fuel pressure value and the first latest fuel pressure value, and (v) predict a fuel pressure value corresponding to the crank angle, based on a predetermined formula.

Abstract: A method and to a device for operating a pressure reservoir, where during a compression phase in a pump chamber, a pump periodically increases the pressure of a fluid located therein, and by means of a discharge valve controlled by differential pressure fluid under high pressure is allowed to be introduced from the pump chamber into the pressure reservoir. During a decompression phase following a compression phase, fluid from a fluid reservoir is introduced into the pump chamber by means of a controllable intake valve. In order to be able also to operate the pressure reservoir without a high pressure measurement directly in the pressure reservoir, the fluid pressure in the pressure reservoir is ascertained by means of a pressure determination in the pump chamber. The pressure determination takes place indirectly, monitoring of the intake valve in the decompression phase.

Abstract: Concave part is formed in a crown surface of the top of piston made of an aluminum alloy. This concave part is filled with mixed powder constituted of zirconia powder as a filler material and pure aluminum powder as a bonding material. Solid cylindrical rotary implement is brought into contact with concave part filled with mixed powder, and then pressed against piston under load while being rotated. Mixed powder is softened by frictional heat with rotary implement, whereby mixed powder is bound in a solid phase to concave part to form low thermal conductive part. With this, the bonding strength of low thermal conductive part to the crown surface of the top of the piston is improved.

Abstract: An integrally formed piston has a crown portion having an upper crown surface and an undercrown surface. A ring belt extends from the undercrown surface at a periphery thereof. The ring belt includes an uppermost ring land and at least one oil galley contoured to extend around at least two surfaces of the uppermost ring land. The oil galley has an opening at the undercrown surface for receiving a cooling fluid therein for cooling the uppermost ring land. A skirt extends from the undercrown surface and the ring belt and has a plurality of stiffening features arranged in a truss formation. At least one of the plurality of stiffening features has an I-beam cross-section and another of the plurality of stiffening features has a negative draft angle.

Abstract: An engine cowling of an aircraft gas-turbine engine with a thrust-reversing device, with a core engine and a bypass duct surrounding the latter, and with a front cowling enclosing the bypass duct and a rear cowling movable in the axial direction, as well as with cascade elements arranged over the circumference which can be placed by a substantially axial movement into an intermediate space resulting from a movement of the rear cowling relative to the front cowling, characterized in that the cascade elements are connected directly to the rear cowling, that the rear cowling has a rounded outer leading edge and that the cascade element has at its rear area a flow-guiding element, in front of which several thrust-reversing stator vanes are arranged and behind which at least one flow stator vane is arranged whose curvature shape matches the rounding of the outer leading edge of the rear cowling.

Abstract: A flow-management system may comprise a center body impermeable to air. A conical surface of the center body may face forward. A blocking surface of the center body may be coaxial with the conical surface and may comprise an annular recess. An annular ring may be aft of the center body and fluidly coupled with the blocking surface. A tube may encase the center body and annular ring. The annular ring may comprise an air-foil shape to direct a pulse to the blocking surface. The blocking surface may comprise a central peak and a circular ridge separated by the annular recess.

Abstract: A fuel supply device for supplying fuel into a combustion chamber of an internal combustion engine is provided. The device includes: a low pressure fuel supply pipe to which a low pressure fuel is supplied; a high pressure fuel supply pipe to which high pressure fuel to be supplied into the combustion chamber is supplied; fuel supply units provided between the low pressure fuel supply pipe and the high pressure fuel supply pipe, each of the fuel supply units being configured to boost the fuel in the low pressure fuel supply pipe and supply the boosted fuel to the high pressure fuel supply pipe; and a control unit configured to control the fuel supply units. The control unit controls the fuel supply units such that a total amount of ejection of the fuel ejected from the fuel supply units per unit time is close to a constant value.

Abstract: Methods and systems are provided for reducing evaporative emissions from a vehicle by performing a fine leak test at a vehicle assembly plant. Fuel tank pressure generated after a green tank fueling event is monitored as the vehicle moves along an assembly line. A leak is determined based on a rate of pressure bleed-up over the duration, and accordingly the vehicle is directed to a repair station.

Abstract: An abnormality detection device of an internal combustion engine includes an ECU that is an abnormality detection unit detecting a leakage occurrence of a second pure pipe. When the internal combustion engine is in a supercharging operation state that a supercharger operates and the second purge pipe is closed by a second purge valve, the ECU detects the leakage occurrence of the second purge pipe based on a differential pressure between a pressure in the second purge pipe and an atmospheric pressure. In this case, the valve pressure in the second purge pipe is a pressure in the second purge pipe between the second purge valve and the intake pipe.

Abstract: A snap-fit attaching device may attach an accessory device to an attachment unit that may be integrated with or connected to a main unit. The attachment device may include a first structural member and a second structural member. The first structural member includes a slot that defines an engaging opening forming member. The engaging opening forming member is supported at a support portion in a cantilever manner so as to be resiliently deformable. An engaging opening is formed in the engaging opening forming member. The first structural member further includes a bridging member defining a part of the slot and disposed at a position opposite to the support portion. The second structural member includes an engaging projection for engagement with the engaging opening.

Abstract: An exhaust heat recovery system may include an exhaust pipe through which exhaust gas exhausted from an engine moves, a main channel through which a working fluid moves, a turbine rotated by the working fluid exhausted from the main channel to generate energy, an exhaust gas recirculation (EGR) line circulating a portion of the exhaust gas exhausted from the engine to an intake manifold, and channel control valves disposed in the main channel and configured to control movement of the working fluid so that the exhaust gas moving along the EGR line and the working fluid moving along the main channel exchange heat with each other.

Abstract: A device of a system for air ducting of an internal combustion engine in a motor vehicle with a turbocharger arranged between an exhaust gas line and an intake line. The device includes a high pressure flow pathway with a valve branching from the exhaust gas line between the internal combustion engine and a turbine side of the turbocharger, a low pressure flow pathway with a valve branching in the flow direction of the exhaust gas downstream from the turbine side of the turbocharger, and an exhaust gas heat exchanger. A first flow pathway with a valve and a second flow pathway with a valve merge into a mouth region with a third flow pathway. At least one section of the high pressure flow pathway, the low pressure flow pathway, the flow pathways, and the exhaust gas heat exchanger are integrated inside a housing formed as a continuous compact unit.

Abstract: Methods and systems are provided for an Exhaust Gas Recirculation (EGR) system for an internal combustion engine. In one example, the EGR system comprises an inlet air duct configured to provide the internal combustion engine with inlet air, an EGR diffuser configured to provide recirculated exhaust gases from the internal combustion engine to the inlet air duct through an outlet, and a resilient element, the EGR diffuser and resilient element adapted to provide homogenous mixing of EGR gases and inlet air at a specific operating condition of the vehicle.

Abstract: An apparatus for cooling a vehicle engine includes a combustion chamber having a reciprocating piston, a water jacket for flowing cooling water to cool the combustion chamber, and a cylinder block forming a structure of the engine, wherein the cylinder block is equipped with a cylinder block body that includes the combustion chamber, and wherein the cylinder block includes a plurality of EGR coolers that exchange heat with the cooling water supplied to the combustion chamber.

Abstract: An exhaust gas recirculation (“EGR”) power module configured for a wire harness of an altimetric/barometric pressure sensor and/or an ambient air sensor of an EGR system for an engine includes a set of wires and a circuit. The set of wires is configured to match the wire harness on the altimetric/barometric pressure sensor and/or the ambient air sensor for the engine. The circuit provides a resistance or resistances to the wire harness through the set of wires.

Abstract: A fuel atomizer that includes a housing having a fuel inlet and at least one primary orifice positioned at the inlet, wherein the at least one orifice configured to disperse a stream of fuel into a plurality of fuel droplets. The plurality of fuel droplets contact a fuel impingement surface to break up the plurality of fuel droplets into a plurality of smaller secondary droplets and create a thin film of secondary droplets on the impingement surface. At least one pressurized air channel delivers an airflow into contact with the secondary droplets. The secondary droplets pass through a plurality of secondary outlet orifices to exit the housing. A size of the plurality of secondary droplets is reduced when passing out of the plurality of secondary orifices.

Abstract: Disclosed herein is an actuator for an intake manifold, wherein the actuator may include: a housing having a negative pressure space; an operating unit operated by the pressure of air introduced into and discharged from the negative pressure space, and rotating the variable valve; an exhaust flow path connected to an external negative pressure supply source; an intake flow path receiving external air which raises the pressure of the negative pressure space; a spool hole formed in the housing so as to communicate with the exhaust flow path and the intake flow path; an air entry and exit flow path formed in the housing so as to communicate with the negative pressure space and the spool hole; a valve body selectively opening/closing the exhaust flow path and the intake flow path; and a solenoid unit operating the valve body.

Abstract: An evacuator is disclosed, and includes a body defining a central axis, a converging motive section, a diverging discharge section, at least one suction port, and at least one Venturi gap. The Venturi gap is located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. The evacuator also includes a fin positioned within the motive section of the body. The fin extends in the direction of the central axis.

Abstract: The invention relates to a pressure regulator for a high-pressure ramp of a system for injecting fuel into an internal combustion engine, comprising a solenoid valve element (10) which receives an electromagnet (40). The electromagnet controls a needle (20) that closes a valve seat (30) which is connected to a high-pressure inlet and opens into a discharge chamber (13), said discharge chamber communicating with a liquid recirculation system (5) by means of outlet openings (14). The rear face (12) of the solenoid valve element (10) receives a coil (40) which controls the opening process of an armature (41) that is rigidly connected to the needle (20) and is subject to a closing return spring (25). The discharge chamber (13) is located on the front face (11) of the solenoid valve element (10) on the axis (XX) of the needle (20), and the discharge chamber surrounds the needle.

Abstract: A fuel injection device injecting a fuel from an injection hole to a combustion chamber of an internal combustion engine includes a valve body including a fuel passage through which the fuel flows to the injection hole and a seat portion facing the fuel passage, a valve member moving in the valve body in an axial direction of the valve body and opening and closing the injection hole by being removed from and seated on the seat portion, a dividing member defining a pressure control chamber placed at a position opposite to the injection hole with respect to the valve member, and an outer peripheral member surrounding an exterior of an outer periphery of the dividing member. The pressure control chamber controls a movement of the valve member by a pressure of the fuel that is introduced. The outer peripheral member and the valve body constitute the fuel passage.

Abstract: A clip—for a fuel injection valve includes a load transmitting member—and a fitting member. The load transmitting member is formed from a single wire material and includes a contacting portion, which contacts a contactable surface formed in the fuel injection valve, a depressible portion, which is depressible in a downward direction by a pressing surface formed in a fuel supply conduit, and a spring portion, which is formed between one end of the contacting portion and the depressible portion and is resiliently deformable by a load. The fitting member-is formed separately from the load transmitting member and is connected to the load transmitting member on a side of the contacting portion, which is opposite from the spring portion. The fitting member is fittable to a fittable portion of the fuel supply conduit.

Abstract: The present disclosure relates to the field of motor vehicles. The teachings thereof may be embodied in a self-locking internal damper comprising: a damper body with a closed chamber; each of two ends of the closed chamber in the length direction including a straight plate section projecting therefrom, with a center line of the straight plate section passing through a center point of the closed chamber; two connecting portions located at ends of the two straight plate sections, respectively; and at least one of the two connecting portions including a bent structure formed by extending and bending one of the straight plate sections.

Abstract: A fuel pipe of a fuel supply device includes: a first side wall having a mounting surface to which an injector cup and a bracket are attached; and a second side wall to which the injector cup and the bracket are not attached. A peripheral wall of the injector cup extends at least from a position on a bottom-end side relative to a centerline in a mounting surface to a position on an upper-end side relative to the centerline, and is fixed to the mounting surface at a part of the mounting surface on the bottom-end side relative to the centerline and at a part thereof on the upper-end side relative to the centerline.

Abstract: A remote start system is for a vehicle including an ignition switch sequentially movable to a plurality of switch positions, and a plurality of ignition switch wires coupled to the ignition switch. The remote start system may include a wiring harness having a plurality of remote start wires to be arbitrarily coupled to the plurality of ignition wires, a wireless receiver responsive to a wireless remote start signal, and a controller coupled to the wiring harness and the wireless receiver. The controller may, in a learning mode, perform a mapping of the remote start wires to the ignition wires based upon sequential movement of the ignition switch to the plurality of switch positions. The controller may, in an operating mode, selectively activate the remote start wires based upon the mapping to remote start an engine of the vehicle responsive to the wireless receiver.

Abstract: An apparatus includes an engine friction module in operative communication with an engine and structured to interpret engine operation data indicative of an engine friction amount, and a stop/start module structured to compare the engine operation data with predetermined protective criteria that includes an engine friction threshold and to turn off the engine for at least a portion of time based on the engine friction threshold exceeding the engine friction amount.

Abstract: To improve a propagation speed of a flame by effectively utilizing energy of the electromagnetic wave in the combustion chamber in an internal combustion engine that promotes combustion of fuel air mixture in a combustion chamber by means of an electromagnetic wave. The internal combustion engine includes, in addition to an internal combustion engine main body and an ignition device, an electromagnetic wave emission device and a control device. The electromagnetic wave emission device emits an electromagnetic wave to the combustion chamber while the flame is being propagated after ignition of the fuel air mixture. The control device controls a frequency of the electromagnetic wave emitted to the combustion chamber in view of a resonant frequency of the combustion chamber in accordance with an operation condition of the internal combustion engine main body or a propagation condition of the flame.

Abstract: A control device suitable for use in a vehicle includes a circuit board and a thermal fuse holder including a removable spacer element and a plurality of breaker elements. The thermal fuse holder is attached at a terminal structure and, when the terminal structure is attached to the circuit board, the breaker elements engage the removable spacer element to hold the breaker elements at the circuit board. After terminals of the terminal structure and the breaker elements are soldered at the circuit board, the removable spacer element is removed from the thermal fuse holder, whereby the breaker elements are held at the circuit board via solder joints and are biased away from the circuit board. When the temperature at a respective solder joint exceeds a threshold temperature that melts the solder, the respective breaker element moves away from the circuit board to break the electrical connection at the solder joint.

Abstract: This invention relates to an energy transfer arrangement of a wave energy recovery apparatus comprising at least a base, a reciprocating panel, supporting legs and a pivot shaft for the reciprocating panel, and a driving and power-take-off arrangement equipped with an actuating mechanism and one or more power-take-off units to convert kinetic energy of waves or tidal currents to another type of energy, each PTO unit comprising a power transmission mechanism. The actuating mechanism is arranged to transfer the reciprocating motion of the panel mechanically to a linear motion of the power transmission mechanism of each PTO unit.

Abstract: A buoyant energy generating housing apparatus submersed in fluid currents. The disclosed embodiments comprises rotary turbines that harvest the kinetic energy in the currents, and buoys that house equipment and provide buoyancy to support the system. Movements and rotations are restrained by multiple cables or tendons that are anchored on the seabed, in combination with the internal active ballast system in the buoys. Applications in currents with direction change are possible with the use of two-buoy embodiments, further assisted by the optional use of weathervanes.

Abstract: The invention relates to a tidal wave powered device and a method thereof for producing potential energy from the movement of tidal waves in a water mass, the device comprising a cylinder (18) anchored to the bed (22) of the water mass with a piston (16) located in the cylinder to define a pumping chamber (25) therein. A storage tank (23) is located at an elevated height for storage of water delivered from the cylinder pumping chamber (25). A docking unit (30) anchored to the bed of the water mass is connected to a floater (10) such that when the floater (10) attains an optimal height, the docking unit (30) is locked in to hold the floater (10) in an elevated position. The docking unit (30) is opened to release the floater (10) from the elevated position so that the weight of the floater pushes the piston (16) downwards to deliver water from the pumping chamber (25) of the cylinder (18) into the storage tank (23).

Abstract: A blade for a wind turbine defines an airfoil with a leading edge section and a trailing edge section, notably a flat-back trailing edge. A rounded connecting section interconnects a pressure side section of the airfoil and the trailing edge section. The rounded connecting section attaches to the pressure side section at a transition point, in which the pressure side section's tangent does not coincide with the rounded connecting section's tangent, so that the outer surface of the airfoil has a sharp corner at said transition point. The truncated radius, i.e. geometrical discontinuity, thus formed at the transition between the pressure side section and the trailing edge section increases the aerodynamically effective surface of the pressure side and enables forced and hence controlled flow separation without compromising ease of manufacture and structural stability of a fiber-reinforced structure making up a shell of the blade.