Abstract: The invention relates to a generator set, in particular a generator set of a hybrid vehicle, with a two-cylinder piston engine (1), which has a crankshaft housing (10), in which two counter-rotating crankshafts (11, 12) are arranged, which are connected by means of piston rods (13) to pistons (18, 19), which are guided inside two cylinders (21, 22) in a tandem arrangement, wherein at least one crankshaft (11, 12) is drivingly connected to a generator (41, 42), and wherein the piston engine (1) comprises a cylinder head (20), which is connected to the crankshaft housing (10), wherein the piston engine (1) has a lower-mounted camshaft (30), and the cylinder head (20) can be connected to the crankshaft housing (10) in at least two positions, in particular positions rotated through 180° relative to each other. Furthermore, the invention relates to a vehicle with such a generator set.

Abstract: A descaling system includes injector arranged to inject cleaning fluid over an inlet for inflow of a fuel-air mixture of an internal-combustion engine and a controller that opens or closes the engine's EGR valve according to parameters of the injected cleaning fluid.

Abstract: A method for predictive maintenance of components of an internal combustion engine by a structure-borne sound sensor includes: recording vibrations of the components of the internal combustion engine by at least one structure-borne sound sensor; and during operation of the internal combustion engine, continuously checking a release for diagnosing a wear condition of the components of the internal combustion engine. The one or more structure-borne sound sensors, which are arranged at one or more positions on the internal combustion engine, record measurement signals and forward them to evaluation electronics. The measurement signals are time-synchronized to a characteristic state of the internal combustion engine or the measurement signal recording is time-triggered. The time-synchronized or triggered measurement signals are decoded into measurement data. The decoded measurement data is subjected to a signal transformation. One or more spectrograms are generated from the signal transformation.

Abstract: A method for assembling and disassembling a module of gas turbine engine is provided, along with a gas turbine engine configured for modular assembly/disassembly. The engine includes a first shaft and a second shaft. The first shaft connects a compressor section and a first turbine section. The second shaft is connected to the second turbine section. The first and second shafts are rotatable about the engine rotational axis. The second shaft and the second turbine section together form a module that can be assembled, or disassembled, or both from the engine.

Abstract: A turbine engine comprising includes at least one combustor, a liquid fuel supply system, and a fuel additive injection system. The combustor is configured to combust liquid fuel. The liquid fuel supply system is configured to channel liquid fuel through at least one fuel line to the at least one combustor. The fuel additive injection system is coupled in fluid communication with the liquid fuel supply system. The fuel additive injection system includes a recirculation circuit configured to recirculate at least a portion of liquid fuel to the liquid fuel supply system. The fuel additive injection system is configured to channel chemical additive through the recirculation circuit for mixing with the at least a portion of liquid fuel to generate an additive fuel mixture configured to inhibit coke formation in the liquid fuel supply system.

Abstract: The invention relates to a device (2) for cooling a turbine casing, preferably of a low-pressure turbine of a turbomachine, with air jets, the device comprising a pressurised air supply housing (3) and at least two curved cooling pipes (40) arranged on either side of the housing (3), around and spaced apart from a part of the casing and provided with air injection holes (41), the housing comprising, in particular, a bottom (31) and two longitudinal side walls (32, 33), and the bottom being pierced by air injection holes. The device is characterised in that each of the side walls extends outwards as at least one single-piece tubular sleeve, to which a cooling pipe is joined, the bottom of the sleeve being located at the same level as the bottom of the housing at the point where they are joined together.

Abstract: A fuel system for a gas turbine engine includes a plurality of duplex nozzles arranged on each side of top dead center and a plurality of simplex nozzles. A primary manifold is operable to communicate fuel to a primary flow jet in each of the plurality of duplex nozzles and a secondary manifold is operable to communicate fuel to a secondary flow jet in each of the plurality of duplex nozzles and a secondary flow jet in each of the plurality of simplex nozzles. An equalizer valve that is in communication with both the primary manifold and the secondary manifold distributes fuel at various pressures to both the primary and secondary manifolds.

Abstract: A gas turbine may include a rotatable shaft, a compressor disposed about the rotatable shaft and configured to output compressed air, and a combustor disposed about the rotatable shaft. The combustor may be configured to receive the compressed air and output high temperature compressed gas. The gas turbine may further include a power turbine disposed about the rotatable shaft and configured to receive the high temperature compressed gas, and a first liner defining a plurality of holes and disposed around the combustor. The power turbine may be configured to expand the high temperature compressed gas and rotate the rotatable shaft. The first liner may have a first end and a longitudinally opposite second end. The first end may be coupled to an inner surface of the casing at or adjacent an upstream end of the combustor and the second end may be substantially free from any connection with the casing.

Abstract: To provide a damping device that includes an acoustic liner that forms an acoustic-liner resonant space along an outer periphery of a combustion chamber in which a combustion gas flows, and an acoustic damper provided on an outer peripheral side of the acoustic liner, to form an acoustic-damper resonant space that communicates with the acoustic-liner resonant space. The acoustic liner is formed with a damper opening connected with the acoustic damper for causing the acoustic-liner resonant space and the acoustic-damper resonant space to communicate with each other. The acoustic liner includes a divided portion that is a portion to be divided in a circumferential direction of the combustion chamber by the damper opening, and a continuous portion that is a portion continuous over the circumferential direction of the combustion chamber.

Abstract: Systems and methods for controlling a fluid-based system are disclosed. The systems and methods may include a model processor for generating a model output, the model processor including a set state module for setting dynamic states, the dynamic states input to an open loop model based on the model operating mode, where the open loop model generates current state derivatives, solver state errors, and synthesized parameters as a function of the dynamic states and a model input vector. A constraint on the current state derivatives and solver state errors is based on mathematical abstractions of physical laws that govern behavior of a component using a material temperature utility. The model processor may further include an estimate state module for determining an estimated state of the model based on at least one of a prior state, the current state derivatives, the solver state errors, and the synthesized parameters.

Abstract: A fuel system includes a fuel line configured to allow a fuel to flow therethrough and a fluoroscopy device attached to the fuel line such that the fluoroscopy device can input excitation radiation into the fuel line and receive fluorescent radiation emitted from the fuel in the fuel line.

Abstract: A system for control of the air path of an internal combustion engine including a feed-forward controller and a feed-back controller. The feed-forward controller configured to in a sampling period, obtain model parameter values, incorporate the modeled parameter values and reference values into an optimization for a nonlinear model predictive control, perform a Newton method iteration of the optimization in order to determine a solution, and issue commands that control inputs for engine operation based on the solution. The feed-back controller configured to obtain modeled parameter values, obtain measured parameter values based on the operating condition of the engine, incorporate the modeled parameter values, measured parameter values, and reference values into an optimization for a nonlinear model predictive control, perform a Newton method iteration of the optimization in order to determine a solution, and issue commands that control inputs for engine operation based on the solution.

Abstract: A gas engine drive system includes: a gas engine including combustion chamber; a turbocharger including a compressor and turbine; a fuel injection system that injects fuel gas into intake air that is supplied from compressor to combustion chamber via an intake passage; a pressure detector detecting a charge air pressure; a temperature detector detecting the intake air's temperature; and controller controlling the fuel injection system. The controller: when required output decreases, determines the charge air pressure's lean limit based on target injection amount corresponding to required output that has decreased; if the charge air pressure is lower than or equal to the lean limit, decreases fuel injection amount to target injection amount; if the charge air pressure is higher than lean limit, brings fuel injection amount to zero. When the charge air pressure becomes lower than or equal to the lean limit, increases fuel injection amount to target injection amount.

Abstract: Example methods and systems for treating exhaust from an internal combustion engine may generally determine a catalytic converter in an exhaust system is at least partially deactivated by detecting an elevated exhaust temperature and a lean-burn operating condition. In response, a deactivation level of the catalytic converter may be determined, which may be compared with a threshold deactivation level. A magnitude of a temporary rich-fuel operating condition as a response may be determined based upon the comparison. The catalytic converter may be reactivated with the temporary rich-fuel operating condition.

Abstract: An engine control device that can suppress thermal degradation of a particulate filter is provided. The device executes a fuel injection control module that restricts the supply of fuel by an injector if a fuel cutting condition is satisfied, an accumulation estimation module that estimates the accumulated amount of soot trapped in a GPF, and a regeneration control module that performs regeneration control for regenerating the GPF by burning soot if the accumulated soot amount exceeds a predetermined setting amount. A fuel cut prohibition line is set in advance and defines a prohibition temperature at which fuel cutting control is to be prohibited in accordance with the accumulated soot amount. The device further executes a prohibition control module that prohibits performance of fuel cutting control by the fuel injection control module if the temperature of the GPF is higher than the prohibition temperature.

Abstract: A plant control system comprises a target value calculating part calculating a target value r of a control output x of a plant, a target value correcting part correcting the target value so as to calculate a corrected target value w, and a feedback controller determining a control input. The target value correcting part, if making the control output change to the target value, sets the corrected target value so that an amount of correction of the target value becomes equal to or less than a predetermined value, then changes the corrected target value so that the amount of correction of the target value becomes larger than the predetermined value, then changes the corrected target value so that the amount of correction of the target value becomes equal to or less than the predetermined value before the control output reaches the target value.

Abstract: A kill switch assembly for an internal combustion engine may include a housing, a first terminal carried by the housing and connected to a ground wire, a second terminal carried by the housing and connected to an engine microcontroller communication wire, and a kill switch. The kill switch may be carried by the housing, electrically connected to the first and second terminals, and manually operable by an operator to change the state of the electric switch to provide an engine stop signal to the engine microcontroller. The assembly may also include an electronic circuit carried by the housing, connected to the first and second terminals, and through the wires communicating with the engine microcontroller.

Abstract: A fuel injection control apparatus is provided. An injection unit injects fuel in an internal combustion engine. A carbon monoxide concentration sensor is provided in an exhaust path of the internal combustion engine and detects a carbon monoxide concentration in an exhaust gas. A control unit controls the injection unit based on the carbon monoxide concentration detected by the carbon monoxide concentration sensor such that an air fuel ratio in the internal combustion engine becomes close to a target air fuel ratio.

Abstract: A method for avoiding a measurement error of an air flow sensor for a vehicle includes an engine control unit (ECU) which predicts, in advance, occurrence of the contamination by foreign materials included in the air or condensation of moisture on a sensor measurement plate of the air flow sensor, and performs an operation for preventing the contamination by foreign materials or the condensation of moisture when the occurrence is predicted, to avoid the measurement error of the air flow sensor due to the contamination by foreign materials or the condensation of moisture on the sensor measurement plate.

Abstract: An abnormality detection device for an air-fuel ratio sensor is provided. An air-fuel ratio sensor is provided in an exhaust passage. A storage device stores mapping data specifying a mapping. The mapping outputs an abnormality determination variable using first time series data and second time series data as an input. The first time series data is time series data of an excess amount variable in a first predetermined period. The excess amount variable is a variable corresponding to an excess amount of fuel actually discharged to the exhaust passage in relation to an amount of fuel reacting without excess or deficiency with oxygen contained in a fluid discharged to the exhaust passage. The second time series data is time series data of an air-fuel ratio detection variable in a second predetermined period.

Abstract: Methods and systems are provided for reducing errors in estimated fuel rail pressure incurred at the time of a scheduled injection event due to engine-driven cyclic fuel rail pressure changes. In one example, a pulse-width commanded during a scheduled injection event is determined as a function fuel rail pressure samples collected over a moving window that is customized for the corresponding fuel injector. In another example, the commanded pulse-width is determined as a function of an average fuel rail pressure sampled during a quiet zone of injector operation and predicted fuel rail pressure altering events occurring between the quiet zone and the scheduled injection event.

Abstract: In a compression-ignition engine having a two-stage cavity, the distribution ratio between fuel for an upper cavity and fuel for a lower cavity is maintained even when the operational state of the engine changes. A piston of the engine includes a lower cavity, an upper cavity, and a lip portion therebetween. A controller causes a main injection and at least one pilot injection to be executed when the engine operates in a first state and a second state in which the load is lower than the load in the first state. The fuel spray is distributed to the lower cavity and the upper cavity. The controller sets the timing of the pilot injection(s) so that the distribution ratio of the fuel spray of the pilot injection(s) for the lower cavity is higher when the engine operates in the first state than when in the second state.

Abstract: Method and apparatus for detecting drift of pilot, wherein the method includes: measuring two rotation speeds corresponding to each detection point of at least one detection point when an engine equipped with an injector is in an idle state, wherein the detection point is point(s) of an injection curve measured under the condition that a current injection pressure is applied to the injector when there is no drift of pilot in the injector, energizing time indicated by the point(s) being less than a predefined value, one rotation speed is a rotation speed of the engine during a certain working cycle of a cylinder injected by the injector, the injector being energized for an energizing time indicated by that detection point in a pilot period of the cycle, and another rotation speed is a rotation speed of the engine during an another working cycle of the cylinder, the injector not being energized in the pilot period of the cycle; calculating a current engine rotation speed change corresponding to the detection po

Abstract: A system for actuating a blocker door of a thrust reverser, in which a drag link assembly is removed from the airflow through the engine during flight. The assembly couples the door to a sleeve so that translation of the sleeve between deployed and stowed positions moves the door to open and closed positions, respectively. The assembly includes a drag link track having a channel extending between first and second track ends, and a drag link having a link end which is slidable in the track channel between the first and second track ends. During deployment, translation of the sleeve causes the second link end to slide within the channel toward the second track end which causes the door to open, and during stowage, translation of the sleeve causes the second link end to slide within the channel toward the first track end which causes the door to close.

Abstract: An improved rocket engine system comprises a rocket engine, a coolant source, and a propellant source, which are in fluid communication with the rocket engine with independent regulation of the coolant source flow relative to the propellant source flow. The improved rocket engine system may further include at least one power source, at least one power source motor, at least one pump, at least one controller, and a propellant pressurizing source.

Abstract: An engine includes fuel system components provided on a cylinder head, a purge control valve that controls an amount of evaporated fuel purged to a portion of an intake passage on a downstream side of a throttle valve, and intake pipes that form the portion of the intake passage on the downstream side of the throttle valve and extend in a cylinder array direction, in which the purge control valve is disposed in front of the intake pipes and the fuel system components are disposed on an opposite side of the purge control valve across the intake pipes in vehicle front view or vehicle side view.

Abstract: A leakage detecting device includes a first sensor, a second sensor, a pump, a leakage determination portion and a determination resetting portion. The first sensor, which is provided in a first passage connecting a fuel tank to a canister, detects density of vaporized fuel generated in the fuel tank. The second sensor, which is provided in a third passage connecting the canister to the pump, detects pressure in the third passage. The pump is provided between the third passage and an atmospheric passage. The leakage determination portion determines whether there is leakage in a vaporized fuel processing system or not, based on a time-variable amount of the pressure detected by the second sensor. The determination resetting portion resets a leakage determination result of the leakage determination portion, based on a time-variable amount of the density and the time-variable amount of the pressure.

Abstract: An internal combustion engine with a fuel tank, a fluid-carrying component and a tank ventilation line, which fluidically connects the fuel tank and the fluid-carrying component, wherein a valve is disposed in the tank ventilation line, wherein a detection subarea of the valve is surrounded by the fluid-carrying component in such a manner that a detection space is formed around the detection subarea, wherein the detection space has at least one inlet opening via which the detection space can be pressurized and wherein at least one pressure sensor for monitoring the pressure in the detection space is provided. A method for monitoring a connection between a valve in a tank ventilation line and a fluid-carrying component is also provided.

Abstract: A fuel-saving device includes an oxygen generator adapted for producing oxygen, an air intake component adapted for inhaling air, and a conveyor comprising an output terminal adapted for outputting gas, an oxygen terminal connected with the oxygen generator, an air terminal connected with the air intake component, and a connector connecting the output terminal, the oxygen terminal and the air terminal, so as to allow oxygen from the oxygen generator and air from the air intake component to be mixed and output through the output terminal.

Abstract: Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.

Abstract: The power turbine system includes two power turbines communicating with an ion transport membrane (ITM) reactor. Heavy liquid fuel is atomized and burned within the reactor to drive the first turbine, with the first turbine producing useful power. Exhaust from the first turbine is recycled back into the reactor. The reactor includes a series of concentric cylindrical ion transport membranes that separate atmospheric and exhaust gases into suitable components for combustion therein, with at least some of the gases being “cracked” to alter their molecular structure for further combustion to power the second turbine. The second turbine drives a compressor to supply air to the reactor. At least one of the ITMs precludes atmospheric nitrogen from the combustion processes, with the resulting exhaust including pure water and carbon dioxide. The carbon dioxide is either recycled into the reactor to facilitate fuel atomization, or compressed for sequestration.

Abstract: The power turbine system includes two power turbines communicating with an ion transport membrane (ITM) reactor. Heavy liquid fuel is atomized and burned within the reactor to drive the first turbine, with the first turbine producing useful power. Exhaust from the first turbine is recycled back into the reactor. The reactor includes a series of concentric cylindrical ion transport membranes that separate atmospheric and exhaust gases into suitable components for combustion therein, with at least some of the gases being “cracked” to alter their molecular structure for further combustion to power the second turbine. The second turbine drives a compressor to supply air to the reactor. At least one of the ITMs precludes atmospheric nitrogen from the combustion processes, with the resulting exhaust including pure water and carbon dioxide. The carbon dioxide is either recycled into the reactor to facilitate fuel atomization, or compressed for sequestration.

Abstract: An air filter device for a motor vehicle is provided with a filter housing having an air inlet and an air outlet, a filter insert which is received in the filter housing and divides the inside of the filter housing into an untreated air section and a pure air section, and a bypass line for supplying air into the untreated air section. The bypass line extends from a connection opening in the filter housing to a cooler, especially a charge air cooler of the motor vehicle.

Abstract: Methods and systems are provided for a convolute-swirl integrated duct (CSID). In one example the CSID may be configured to comply with engine roll and induce swirl in an intake air flow. Engine roll is absorbed as a result of a positioning of the CSID along an intake passage upstream of a compressor inlet and pre-whirl is introduced to intake air prior to delivery of the intake air to a compressor.

Abstract: Various embodiments include a holding component for securing a fuel injector to an injector cup comprising: a U-shaped holding element with two parallel supporting arms for engaging opposite sides of an annular groove in the fuel injector to secure the fuel injector in the injector cup; a base part; two resilient arms extending from the base part for engaging the outer surface of the injector cup; and a depending leg engageable in a corresponding receiving part on the fuel injector to accurately position the fuel injector angularly relative to the injector cup.

Abstract: A method of operating an internal combustion engine system having a fuel injection system including a fluid delivery means operable to deliver a fuel entrained in gas directly into a combustion chamber. The method comprises supplying pressurised gas to the fluid delivery means from a gas supply system, and regulating gas pressure in the gas supply system. The gas pressure in the gas supply system may be regulated during a lag period between commencement of engine cranking and the delivery of fuel at a requisite fuel pressure to the fuel injection system. Regulating gas pressure in the gas supply system comprises opening the fluid delivery means to selectively allow gas to pass into the combustion chamber to relieve pressure in the gas supply system. Optionally, regulating gas pressure in the gas supply system may also comprise opening the fluid delivery means to selectively allow pressurised gas to flow from the combustion chamber to the gas supply system so as to pressurise the gas supply system.

Abstract: A vehicle includes a controller programmed to activate a fuel savings feature upon satisfaction of transition conditions and inhibit the transition according to satisfaction of inhibit conditions. The controller is further programmed to accumulate data indicative of the inhibit conditions and a time associated with the conditions being satisfied over a drive cycle.

Abstract: An override module allowing a vehicle operator to default the status of an automated start-stop system to “off”. A first embodiment uses a module that is installed in-line with a manual override button. A second embodiment uses a module that is installed on the vehicle's CAN bus.

Abstract: A model formula representing the relationship between an error between a predetermined stopping position and an actually-stopped position of a vehicle indicating the result of an automatic stop control, which controls the vehicle to stop at the predetermined stopping position using running-condition parameters, and the running-condition parameters used for the automatic stop control is calculated via machine learning. A stopping error is estimated with respect to the next stopping position, at which the vehicle currently running is going to stop, according to the model formula which is calculated in the past. The changing parameter to be changed is specified among the running-condition parameters, and then the changing parameter used for the automatic stop control is updated with a correction value configured to correct the stopping error of the vehicle.

Abstract: A specialty nut and specialty ratchet driver device used to start an internal combustion engine, each with an integrated one direction clutch, designed to be an attachment for a commercially available battery operated drill/driver gun. The specialty ratchet driver with an integrated one direction clutch is inserted into the driver receptacle of the socket placed over the nut on the crank shaft of the engine. One end of a drive shaft is inserted into the one direction clutch portion of the specialty ratchet driver device and the other end of the drive shaft is inserted into the chuck of a battery operated drill/driver gun. The torque of the drill/driver gun turns the crank shaft of the engine with sufficient force to initiate starting of the engine. The one direction clutch then allows the engine to turn faster than the drill/driver so as not to impede the engine start up.

Abstract: Methods and systems are provided for improving the operating range of an electric vehicle having an engine wherein waste heat generated during motor operation is transferred to pre-heat the engine. Engine starting is predicted based on the electrical torque demand of the vehicle relative to the actual and predicted electrical energy consumption of the electric vehicle. Prior to starting the engine to charge a battery of the motor, various engine components are pre-heated in an order that improves vehicle range while also optimizing fuel economy.

Abstract: An ignition system includes a controller which controls two stages—to provide current to a spark plug. The stages include a first transformer including a first primary winding and a first secondary winding and a second transformer including a second primary winding and a second secondary winding. A switch is electrically connected between a supply high side and the high side of the first primary winding. A second switch is electrically connected between the first primary winding and the power supply low side supply. A third switch is connected between the junction of the switch and high side end of the first inductor and a point between the low side of the second primary winding and low side supply. A fourth switch is located between the low side of the second primary winding and the point. A fifth switch is located between the point and low side supply.

Abstract: An object of the present invention is to predict change of a combustion limit due to cycle variation of temperature and an EGR ratio and perform correction every cycle to decrease an amount of combustion consumption. Therefore, in an internal combustion engine control device that controls an internal combustion engine including a cylinder and an exhaust pipe, the internal combustion engine control device includes a control unit configured to perform EGR control of controlling an exhaust gas in the exhaust pipe to return to an inner cylinder of the cylinder, obtain temperature of the gas in the internal cylinder and an EGR ratio in a state where both an intake valve and an exhaust valve are closed in an combustion cycle, and correct a combustion parameter in a same combustion cycle as the combustion cycle on the basis of the obtained gas temperature and the obtained EGR ratio.

Abstract: An ignition device for an internal combustion engine is provided which includes a spark plug and a controller. The spark plug has a housing with a head protruding into a combustion chamber of the engine. The head has at least a portion located downstream of a spark gap of the spark plug in an air-fuel mixture flow within the combustion chamber. The controller works to perform a plurality of discharge events in the spark plug in each cycle of an operation of the engine. This improves the ability of the spark plug to ignite the mixture without need to increase an ignition energy.

Abstract: A water driven power generating system has a frame with a waterwheel carried within the frame in an upright manner having a plurality of water receiving elements for turning the waterwheel. A water discharge manifold is used to discharge water from a supply tank onto the water receiving elements. The water supply tank is supplied with water from an adjacent water reservoir, such as a stock tank. After passing over the water receiving elements of the water wheel, the discharge water is allowed to flow back to the water reservoir by gravity. The water used in the system is pumped from the reservoir to the supply tank by a truck mounted pump which is powered by the power take-off of the truck.

Abstract: The present invention provides an oscillating water column-oscillating buoy combined wave energy converter. The present invention combines the advantages of the wave energy converters of the oscillating water column and the oscillating buoy. The conversion principles of wave energy of the oscillating water column and the oscillating buoy are on the contrary. The oscillating water column works when the structure does not move, while the oscillating buoy works when the structure substantially vibrates. The oscillating water column and the oscillating buoy are respectively operated in respective spectral ranges without affecting each other, thereby expanding the effective frequency band width of wave energy conversion. Due to the characteristic of absorbing the wave energy at all directions of 360°, the absorption efficiency of the wave energy is enhanced. Through the adoption of a fixed structure, stability of the converter can be ensured, generating efficiency is enhanced and maintenance is facilitated.

Abstract: A wave energy converter situated on a seabed includes a pair of pistons, a means for producing energy within a vessel, and a water-conveyance pipe attached to the vessel. The pistons reciprocate using differential pressure to extract energy from a wave transiting on the surface of a body of water. Water receiving ports at high and low pressure points create a differential pressure to act on the pistons and push them in opposite directions. A hydraulic cylinder or a linear alternator is attached between the pair of pistons to extract the energy.

Abstract: Methods, system and devices 10 for capturing wave energy are disclosed. A submersible wave energy capture device 10 comprises a tube 12 and a plurality of one-way valves 21, 31, 41. The tube 12 has a seawater inlet 11 at an upstream end 10u of the tube 12. The downstream end 10d of the tube 12 is communicable with an energy utilisation means 2 powered by seawater flow from the tube 12. The one-way valves 21, 31, 41 divide the tube 12 into a series of chambers 20, 30, 40. The chambers comprises elastic walls 22, 32, 42. These are deformable so as to alter an effective internal volume of each respective chamber 20, 30, 40. The valves 21, 31, 41, open to permit water flow within the tube 12 in a downstream direction, and close to resist water flow within the tube 12 in an upstream direction.

Abstract: A water current energy generator comprises a barrel configured to rotate in a water current and a pair of air compressors secured on either side of the barrel. As the barrel spins, the air compressors are actuated and compress air into a cylinder. The compressed air is then capable of being accessed by means of a pneumatic hose.

Abstract: A blade adapter for rotor blades of wind turbines, for increasing the rotor diameter, has a first end for attaching to the rotor hub, and a second end, spaced apart in the axial direction, for connecting to the blade root of a rotor blade. In addition, the blade adapter, at its first and second end, has a pitch circle for connecting to the rotor hub or to the rotor blade, wherein the wall of the blade adapter extending in the axial direction is open outwardly, in the form of a truncated cone, from the first end toward the second end, in at least one portion.