Abstract: A method of controlling an internal combustion engine is disclosed, the internal combustion engine comprising at least two cylinders, wherein each cylinder comprises at least one fuel injector configured to inject fuel into the cylinder, wherein the method comprises controlling the fuel injection performed by the fuel injectors into the cylinders based on an estimate of a residual gas imbalance between the at least two cylinders. The present disclosure further relates to a computer program product, a control arrangement, an internal combustion engine, and a vehicle.

Abstract: A rotation speed or a rotation time of a crankshaft at a certain angle is calculated on a basis of a change in a detection signal of a sensor of the crankshaft. Then, when a combustion cylinder is switched, information on the rotation speed or the rotation time for at least two combustion cycles is obtained, and a combustion phase is calculated on the basis of the rotation speed or the rotation time. Accordingly, by using the that measures rotation of the crankshaft, it becomes possible to detect a combustion state of the internal combustion engine with high accuracy.

Abstract: An engine is provided with a cylinder liner that extends beyond the surface of the crankcase surrounding the cylinder. When the engine is oriented in an inverted V-block configuration, the extension of the cylinder liner provides a barrier to oil that can pool on the crankcase surface and otherwise enter the interior of the cylinder, absent such a barrier.

Abstract: A method and system for modulating vapor and liquid fractions of a cycling liquid-vapor fluid operating within its phase transition envelope by creating forced oscillating heat transfer between liquid and vapor fractions of the cycling stream. A liquid stream segment is expansion cooled and brought into thermal communication with a vapor stream segment. The contact with the expansion-cooled liquid enables intermolecular forces to drive condensation and release condensation heat at a condensation temperature higher than the temperature of the expansion-cooled stream segment. The resulting temperature gradient enables the expansion-cooled segment held at constant volume to capture the condensation heat and isochorically vaporize into a vapor stream segment that again is forced to condense so as to form an oscillating thermal cycle within the cycling liquid-vapor fluid.

Abstract: A rear assembly for a turbojet engine nacelle includes at least one composite wall separating a cold portion from a hot portion comprising an element to be cooled, the composite wall having first and second skins which extend facing the cold portion and the hot portion respectively, and which are separated from one another by a middle assembly having cells delimited by internal walls. The first skin includes a plurality of through-openings connecting the cold portion and the cells, the internal walls having through-openings connecting the cells to one another, and the second skin having a through-opening which has its mouth facing the element to be cooled.

Abstract: A pumping apparatus comprising: a pump having a plurality of chambers for sequentially supplying fuel to a combustion chamber; wherein each chamber is fluidly connected to another chamber such that venting of the chamber at least partially pressurises the other chamber.

Abstract: An improved liquid-propellant engine utilizing a combination of a gas turbine, a generator, an electric pump fed engine, and a power management system. When in use, the gas turbine and generator are configured for providing power to an electric motor for operating a fuel pump and an oxidizer pump to pump fuel and oxidizer from individual tanks into a combustion chamber for mixture and combustion. The combustion of the fuel and oxidizer is configured for providing thrust from the base of a rocket to propel it. The generator of the present invention provides continuous electrical power to the electric pump(s) to continue the supply of fuel and oxidizer to the combustion chamber. The power management system of the present invention is electrically connected to the generator, the electric motor(s) configured for operating the fuel and oxidizer pumps, a flight computer, and fuel and oxidizer valves.

Abstract: A system of optimizing carburetor operation comprising: a carburetor controller; an air-fuel ratio sensor; a first communication channel; a processor; a power source; a non-transitory computer-readable memory element; a second communication channel for transmitting and receiving data; an external device; wherein said sensor sample air-fuel ratio in said carburetor; said sensor send said air-fuel ratio information via said first communication channel to said processor; said processor store it in said non-transitory computer-readable memory element; and said processor also send said information to said external device via said second communication channel. A carburetor spacer apparatus with multiple ports is also presented.

Abstract: A method and device diagnoses a presence or an absence of an abnormality in an evaporated fuel treatment system. The first intake air amount is a detection value of an air flow meter in a state in which the purge control valve has been opened, and is theoretically the same value as the second intake air amount when a purge control valve is closed. The second intake air amount is a theoretical intake air amount indirectly calculated arithmetically, and is a value that reflects a change in the intake air amount accompanying operations of intake system devices. A presence or an absence of an abnormality in the evaporated fuel treatment system is determined based on the first intake air amount and the second intake air amount after a control duty of the purge control valve has reached 100%.

Abstract: Methods and systems are presented for combining two or more common fuel vapor storage canisters to increase storage volume for fuel vapors of a vehicle. In one example, a fuel vapor manifold is constructed to permit communication between ports of carbon filled fuel vapor storage canisters. The fuel vapor manifold is a clam shell design that permits vibration welding.

Abstract: A two-stroke engine includes a cylinder having an intake port, a piston configured to open and close the intake port by reciprocating in the cylinder, a crankcase connected to the cylinder and including a crank chamber, a crank assembly located in the crank chamber, a connecting rod having a first end connected to the piston and a second end connected to the crank assembly, and a fuel injector attached to the crankcase and configured to inject mixed fuel to the second end.

Abstract: A system for local power generation to power equipment at a well site which may include a gas line configured to receive a gas flow from a well. The system may also include a turbine comprising an inlet and an outlet and configured to receive the gas flow from the gas line at the inlet and generate power based on a pressure differential between the inlet and the outlet.

Abstract: A marine suspension hydraulic electric energy generation device for generating electric energy from the suspension system of a suspended ship when moving through water, including—at least one suspended floating body (hull); —a chassis; —joints with damping cylinders; —a hydraulic system; —a hydraulic motor; —a generator; wherein—the stated elements are all constituent parts of a suspended ship; —the joints are installed with damping cylinders between the at least one suspended floating body (hull) and the chassis; —the hydraulic system is utilized as energy transmission element; —the conversion of hydraulic energy into mechanical energy takes place in the hydraulic motor; —the conversion of mechanical energy into electric energy takes place in the generator.

Abstract: Renewable energy systems can be deployed on water or with agricultural systems including solar energy panels and wind turbines of various types. Vertically oriented wind turbines may be combined with systems to maintain them vertical, air directors which may also have venturi effect turbines, or not. Wave energy may be captured from roll or pitch energy capture devices or even piston operated anchored systems for various embodiments. Agricultural facilities may combine various technologies to dramatically increase crop yield.

Abstract: This proposed invention is basically a modified plunger pump designed to harness the pawer of the ocean, in particular the movement of the tide. The really cool pard is that it uses the water to float the weight to the surface something so powerful that we use the same method to get goods across the ocean. The device lets the ocean lift the weight where it is then suspended so the force of gravity can power the pump, which in this case is then used to power a turbine to produce electricity.

Abstract: The present invention relates to a modular wind turbine blade and connection structure thereof. The blade module includes a shell and a load-bearing beam and a bearing web provided therein. The load-bearing beam comprises a connecting beam, an auxiliary beam plate, a trailing edge beam, and a T-shaped beam. The connecting beam is provided on both sides of the middle portion, the trailing edge beam is embedded at the edge of the trailing edge portion, the auxiliary beam plate is provided in a plurality along the circumferential direction of the blade, and the T-shaped beam is connected to two adjacent auxiliary beam plates respectively. The load-bearing beam is fitted with the shell, and a support frame formed by the load-bearing beam in conjunction with the bearing web conforms to the contour shape of the blade.

Abstract: A segmented blade module structure and a molding method thereof are disclosed. The blade module includes a blade shell, a beam and a web provided in the blade shell, and the beam comprises a connecting beam, a trailing edge beam and an auxiliary beam plate, and a connecting structure is provided at an end of the connecting beam. The beam and the web integrally formed of composite materials constitute a bearing frame that forms a contour shape conforming to the blade, and the blade shell is formed by a skin wrapped on the bearing frame. The auxiliary beam plate is arranged corresponding to the area from the middle portion to the trailing edge portion of the blade shell to ensure that there is sufficient contact area between the beam and the blade shell to avoid instability of the blade shell, ensuring the structural stability of the segmented blade module.

Abstract: A dynamic vibration absorber includes a frame configured for mounting to a moveable structure; a flywheel mounted on a first shaft; and a first converter adapted to convert a linear displacement of the frame into rotation of the first shaft; including a rotary damper mounted on a second shaft; and a second converter adapted to convert a rotational velocity of the first shaft into a rotational velocity of the second shaft.

Abstract: A modular wind power blade structure and a manufacturing method thereof are disclosed. The structure includes a windward shell, a leeward shell, a T-shaped rib and a support member. The windward shell and leeward shell are assembled relative to each other to form a complete cross-sectional structure of the blade, the T-shaped rib is fixed on the windward shell and leeward shell along length direction of the blade and a plurality of the T-shaped ribs is provided at an interval in width direction of the blade, and the support member comprises a web and spar caps connected at both ends of the web, the two spar caps respectively fixedly connected to the inner wall of the windward shell and the leeward shell, and the T-shaped rib and the spar cap are pultruded profiles, and the windward shell and the leeward shell are formed through an automatic tape laying process.

Abstract: A method of controlling wake in a floating wind park is provided. The method includes monitoring a wind condition at at least one of the plurality of floating wind turbines to generate at least a first monitored wind condition, monitoring one or more parameters indicative of a position and/or orientation of at least one of the plurality of floating wind turbines to generate at least a first monitored floating motion state and generating a control parameter based on a parameter set comprising at least the first monitored wind condition and the first monitored floating motion state. The control parameter is derived so as to reduce the wake influence on the downstream wind turbine. The method further includes controlling based on the control parameter, an operation of at least one of the plurality of floating wind turbines.

Abstract: A power generation system includes a flotation assembly configured to float in water and a first harnessing assembly coupled to the flotation assembly and disposed in an airflow above the water. The first harnessing assembly is configured to harness the airflow to create a first rotational energy. The system also includes a second harnessing assembly coupled to the flotation assembly and disposed in the water. The second rotational assembly is configured to harness movement of the water to create a second rotational energy. The flotation assembly also includes a generating module to convert the first and second rotational energies into electrical energy.

Abstract: A wind turbine is provided including a generator, a base, a nacelle, a tower having a first end mounted to the base and a second end supporting the nacelle, an electrolytic unit electrically powered by the generator to produce hydrogen from an input fluid, in particular water, and a fluid supply assembly for supplying the input fluid from a fluid inlet arranged below a water level to the electrolytic unit arranged above the water level, wherein the hydrogen produced can be taken out of the wind turbine by the hydrogen output.

Abstract: The present invention can be included in the technical field of concrete segments for wind turbine towers and more specifically for wind turbine towers in cold climates, where ambient temperature is below 5° C. at the same time, the invention relates to a set of a concrete segment and heating means, a concrete section, a wind turbine, a mould and a method of assembling the wind turbine.

Abstract: A robotic centrifugal apparatus to generate energy comprising stepper motors, belt drive, sliders, motor generator, pendulum, belt, switch sensor and reflective flanges. The apparatus functions expending low consumption of electricity to produce energy by taking advantage of the gravity which allows the centrifugal motion to produce torque when the pendulum moves downscale. A linear and horizontal motion from one side to another is made by a robotic system synchronized of a stepper motor, belt drive, slider, and a setting of switch sensor with reflective flanges to excite the motion of the pendulum at 360 degrees of rotation continuously, through getting mechanical motion to generate energy. A second stepper motor helps to stabilize the speed of the pendulum rotation specially when the pendulum moves upscale due to the force of gravity slowing down the rotation speed of the pendulum.

Abstract: A modular pumped storage hydropower system may include a shaft having a first end located opposite a second end. A reservoir is connected to the first end of the shaft. The second end of the shaft is configured to be located under a surface of ground. The second end of the shaft has a first compartment and a second compartment. The first compartment retains a pump assembly having an inlet in hydro communication with the second compartment. The second compartment is configured to retain water. A pipe has a first end connected to the pump assembly located opposite a second end extending through a cover of the first end of the shaft. The second end of the pipe is in hydro communication with the reservoir. The pipe of the pump assembly transfers water from the second compartment of the second end of the shaft to the reservoir.

Abstract: An elevator cage is used in an energy storage and delivery system to move blocks between a lower elevation of a tower and a higher elevation of a tower to store energy and to move blocks between a higher elevation of the tower and a lower elevation of the tower under force of gravity to generate electricity. The elevator cage removably receives a block thereon and supports the block on at least three sides.

Abstract: A motor continuously operating is a one hundred percent duty cycle motor. High duty cycle could detrimentally lower a motor's life expectancy and is therefore a problem. A means of solving said problem can be a system for use with a motor that reduces the proportion of a rotation during which said motor operates whilst rotation continues to be maintained by a system characterised by having a rotary shaft connected to two forms with misalignment between the cross-sectional longitudinal axis of one to the cross-sectional longitudinal axis of the other, and by having the rotary shaft with means to connect to a pawl and ratchet system which can be connected to a motor's shaft, and by having the rotary shaft also connected to a further ratchet with means to operate with a pawl, and with the rotary shaft having means to connect to a driver gear.

Abstract: The present invention provides a geothermal power generation system that can control deposition of silica scale.

Abstract: This cylinder block includes: a cylinder block body in which a plurality of cylinder chambers are formed around a rotating shaft; a plurality of first detected portions formed on the outer peripheral surface of the cylinder block body and circumferentially spaced apart from each other at a predetermined first distance; and one or more second detected portions formed on the outer peripheral surface of the cylinder block body and each circumferentially spaced apart from an adjacent one of the plurality of first detected portions at a second distance different from the first distance.

Abstract: A compressor and a refrigeration device are provided. The compressor includes a cylinder body and a piston assembly. The cylinder body has a first air suction hole at a cylinder cover of the cylinder body. The piston has a top dead center located close to the cylinder cover of the cylinder body and a bottom dead center located away from the cylinder cover of the cylinder body in a movement stroke. A distance between the top dead center and the bottom dead center is S. The cylinder body or the piston has a second air suction hole. The second air suction hole is configured to connect to the operating cavity when the piston moves to a predetermined position. The distance between the piston at the predetermined position and the top dead center is L1, where L1>0.5 S.

Abstract: A reciprocating compressor is provided. The reciprocating compressor includes a bearing block, a fixed shaft extending vertically from a lower surface of the bearing block, formed in a cylindrical shape, and having a shaft hole formed therein, a stator disposed on the bearing block and including a coupling hole into which the fixed shaft is inserted, a holder disposed on an outer circumferential surface of the fixed shaft and configured to fix the stator to the bearing block, a rotating shaft inserted into the shaft hole of the fixed shaft, and a rotor disposed outside the stator and fixed to one end of the rotating shaft. The outer circumferential surface of the fixed shaft and the shaft hole may be formed concentrically.

Abstract: A fluid control system comprising: a first channel for carrying a gas in and out of the fluid control system; a reservoir for said gas, wherein the reservoir includes a first pressure sensor arranged to measure a pressure of the gas in the reservoir; a pump for pumping said gas between the first channel and the reservoir, wherein the system is arranged such that a quantity of the gas displaced in the first channel depends on a change in pressure of the gas in the reservoir.

Abstract: A pulsatile fluid pump system includes a pump-valving assembly including a chamber and a diaphragm assembly coupled to the chamber and including a flexible diaphragm. The diaphragm assembly and the pump-valving assembly are configured as an integral pump assembly. The system further includes a linear motor having a magnet and a coil, the magnet moving in relation to the coil, the coil having an electrical input. The system also includes a control housing rigidly coupled to the linear motor and a controller system having an electrical output coupled to the electrical input of the coil, the controller system defining an electrical waveform at the electrical output to cause desired operation of the diaphragm. The integral pump assembly is configured to be removably coupled to the control housing, and the diaphragm assembly of the integral pump assembly is configured to be removably coupled to the linear motor.

Abstract: A MEMs micropump is disclosed that is configured as a substrate including a lower wafer and an upper wafer that together function as a pump and first and second valves on opposing sides of the pump, the micropump comprising: an inlet port for receiving fluid and an outlet port for releasing fluid, a chamber that communicates with the inlet and outlet ports, the chamber and inlet and outlet ports function together as a fluid path within the micropump; and a membrane, as part of the upper wafer, configured to deflect in and out of the fluid path, wherein the first and second valves each include a valve seat within the fluid path and a thin film piezoelectric layer configured to cause the membrane to deflect and engage the valve seat thereby preventing fluid flow within the fluid path; and wherein the pump including the chamber and a bulk piezoelectric layer for causing the membrane to deflect, thereby withdrawing fluid from the inlet port into the chamber and pumping fluid out of the chamber and outlet port.

Abstract: A method for controlling and/or monitoring a compressor system is provided. The compressor system includes one or more compressors and one or more peripheral devices. The compressors and the peripheral devices are arranged or connected in a predetermined configuration. The compressor system is controlled and/or monitored by a control/monitoring unit. After creation of the compressor system, the concretely existing configuration is input in the form of a P&I diagram by an editor and forms the basis for subsequent control, monitoring, diagnosis or evaluation routines.

Abstract: The application relates to a method for monitoring a hydraulic system including several hydraulic components, the hydraulic system comprising at least one pump and subsystems which can be shut off from one another and each have a hydraulic motor and/or a hydraulic cylinder as consumers. According to the application, leakage in the pump and in the subsystems is determined and, on the basis thereof, leakage in the consumers is subsequently determined. These values can be used to determine the efficiencies of the pump and the consumers.

Abstract: Systems and methods for testing a pump assembly for a cooled radiofrequency treatment procedure. In some embodiments, the pump assembly and at least one pump head are driven by at least one respective motor, where the at least one pump head is coupled to tubing for delivering a cooling fluid to a medical probe assembly. The at least one pump head is configured to pump the cooling fluid through the tubing for the cooled radiofrequency treatment procedure. The system can also include a programmable controller operatively connective to the pump assembly and configured to control the pump assembly, and one or more pump function sensors for sensing operation parameters associated with the pump assembly and communicating the pump operation parameters to the controller. The controller can determine that the pump assembly is operating properly based on the operation parameters and can adjust the operation of the motor or output an alert.

Abstract: A cradle plate for high pressure reciprocating pumps is installable within a cradle disposed between a power end of a high pressure reciprocating pump and a fluid end of the high pressure reciprocating pump. The cradle plate has a main body that extends from a front surface to a back surface and a first set of openings that extend through the main body. The first set of openings are configured to receive a set of elongate couplers that position the cradle plate within the cradle in a position that secures a fluid end component against a casing of the fluid end, against a seal of the fluid end, or against both the casing and the seal.

Abstract: A fluid end having its fluid flow bores sealed without threading a retaining nut into the walls of each bore. The fluid ends may be assembled using a plurality of different kits, each kit comprising a fluid end body, a component, a retainer element, and a fastening system. The retainer element holds the component within each of the bores formed in the fluid end body and the fastening system secures the retainer element to the body. The fastening system comprises a plurality of externally threaded studs, washers and nuts in some embodiments. In other embodiments, the fastening system comprises a plurality of screws.

Abstract: Disclosed is a fluid circulating apparatus in which a reservoir, a valve part, and a pump part are integrated with one another, and the valve part and the pump part are disposed in the reservoir to thus achieve a compact structure, thereby achieving a reduced overall size and stabilizing a fluid circulation when pumping a fluid through a plurality of flow paths.

Abstract: An automotive pendulum-slider pump for providing a pressurized lubricant. The automotive pendulum-slider pump includes a non-rotatable rotor housing, a rotor ring which rotates within the rotor housing and which encloses a pumping chamber which includes a suction opening, a discharge opening, and an automatically switching pressure adaption valve, a rotor hub which is connected with the rotor ring to co-rotate therewith, and pendulum vanes which are arranged over a circumference of the rotor ring. The pendulum vanes are pivotably hinged via a respective pendulum hinge at the rotor ring. The pendulum vanes fluidically separate the pumping chamber into pumping compartments. The automatically switching pressure adaption valve of the pumping chamber pre-opens a fluidic connection between at least one of the pumping compartments and the discharge opening immediately before the at least one of the pumping compartments has arrived at the discharge opening.

Abstract: An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a scroll-type compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the scroll-type electric compressor from the discharge volume. The electric compressor includes integral pressure(s) and/or temperatures sensor(s).

Abstract: A compressor design includes a male rotor (10) having one or more helical lobes (12) and a female rotor (14) having one or more helical grooves (16). The male rotor is mounted on a first shaft and the female rotor is mounted on a second shaft. The male rotor is positioned in a first section of a chamber and the female rotor is positioned in a second section of the chamber. Fluid enters the chamber at an inlet, and when the rotors are driven, the lobes of the male rotor fit into the grooves of the female rotor, causing compression and movement of the fluid towards an outlet or discharge end where the compressed fluid is discharged. The configuration of the lobe and groove helix, the lobe and groove profile, and the outer diameter of the rotors can be varied in different combinations to form different rotors.

Abstract: A blower assembly includes, but is not limited to, a blower housing defining a blower chamber and including a gas inlet and a gas outlet; a first rotor positioned within the blower chamber and adapted for rotation therein, the first rotor including a first shaft and at least two lobes defining a first lobe profile; and a second rotor positioned within the blower chamber and adapted for rotation therein, the second rotor including a second shaft and at least two lobes defining a second lobe profile, wherein the first and second rotors are formed from a metal having a coefficient of thermal expansion from about 1 (10?6 in/in*K) to about 13 (10?6 in/in*K), and wherein at least one of the outer surface of the first rotor, the outer surface of the second rotor, or the blower chamber includes a coating.

Abstract: The non-lubricated compressor (10) for compressing a gas, comprises: a stationary stator (12) with a housing (18) comprising a rotor cavity (20) delimited by a bottom wall (22), a top wall (24), and a lateral wall (26) connecting said bottom wall (22) and said top wall (24), a rotor element (14) arranged for rotation about an axis (z) within the rotor cavity (20) for compressing a gas therein, a self-supporting sealing element (16) arranged within the rotor cavity (20), wherein the sealing element (16) is made of an abradable carbon material, and comprises a wall portion (34) arranged on an inner surface of the lateral wall (26) of the rotor cavity (20).

Abstract: A device for controlling a fluid mass flow for a device for compressing a gaseous fluid from a low to a high pressure level. The device has a housing with fluid connections at different pressure levels, and a closure element arranged to move in a translatory manner within the housing along a longitudinal axis, with effective surfaces assigned to the fluid connections. The closure element regulates a flow cross-section of a flow path extending between a first and a second fluid connection. The device has a receiving element for receiving the closure element. A primary segment is arranged to be completely surrounded by the receiving element as a first section of the closure element and a secondary segment is arranged to be completely surrounded by the housing as a second section of the closure element and the receiving element is arranged to be completely surrounded by the housing.

Abstract: Various downhole tools are discussed, including intake and gas separators for a downhole rotary pump. Multiple intakes configured in parallel and series are discussed. along with compact axial length gas separators, and gas separators that remove gas in novel ways. Related apparatuses and methods are discussed.

Abstract: A compressor including an impeller housing accommodating a first impeller configured to compress a fluid and a second impeller configured to further compress the fluid, and an interstage component forming, together with the impeller housing, an interstage passage that includes a curved passage. The curved passage is formed by an inner wall surface that is curved, and by an outer wall surface that is curved. A first wall surface selected from the inner wall surface and the outer wall surface is formed by the impeller housing, and a second wall surface selected from the inner wall surface and the outer wall surface is formed by the interstage component. A distance between the inner wall surface and the outer wall surface is constant along an entire length of the curved passage.

Abstract: The invention relates to a side-channel machine having a housing (4a), located in the housing (4a) a side-channel (28) for guiding a gas, and at least one gas inlet opening (34) which is formed in the housing (4a) and is fluidically connected to the side-channel (28). Furthermore, the side-channel machine has at least one gas inlet pipe (29a) which connects to the at least one gas inlet opening (34), The side-channel machine further comprises at least one gas outlet opening (33) and at least one gas outlet pipe (31a) which connects to the at least one gas outlet opening (33). Furthermore, the side-channel machine has an impeller that can be made to rotate in the housing (4a), with impeller blades, which bound impeller cells arranged in the side-channel (28), for delivering the gas in the impeller cells from the at least one gas inlet opening (34) to the at least one gas outlet opening (33).

Abstract: An E-compressor for an AC system of an electric vehicle provides a cooling flow of refrigerant via a fixed orifice disposed internally within the housing assembly of the compressor. A portion of the pressurized refrigerant to be supplied to the AC system is bled off through the fixed orifice and provided to a cooling flow path that directs the bleed portion into the bearing areas of the compressor.