241 results about "Work output" patented technology

A flow management system capable of providing adjustable hydraulic fluid flow or pressure at a common line to supply bidirectional pumps in electro-hydrostatic actuation systems and conditioning re-circulated hydraulic fluid. The system enables flow sharing between multiple actuation systems and minimization of energy consumption by a power-on-demand approach and / or electrical energy regeneration while eliminating the need for an accumulator. The system has particular application to electro-hydrostatic actuation systems that typically include bi-directional electric motor driven pumps and unbalanced hydraulic actuators connected within closed circuits to provide work output against external loads and reversely recover energy from externally applied loads.

A heat engine (10) achieves operational efficiencies by: 1) recovering waste heat from heat engine expander (14) to preheat heat-engine working fluid, 2) using super-heated working fluid from compressor (402) to pre-heat heat-engine working fluid, and 3) using reject heat from condenser (93) and absorber (95) to heat the heat-engine boiler (12). A dual heat-exchange generator (72) affords continuous operation by using gas-fired heat exchanger (212) to heat generator (72) when intermittent heat source (40), e.g., solar, is incapable of heating generator (72). The combination of heat engine (10) and absorption and compression heat transfer devices (60, 410) allows use of low-temperature heat sources such as solar, bio-mass, and waste heat to provide refrigeration, heating, work output including pumping and heating of subterranean water and electrical generation.

Systems and methods for converting thermal energy, such as solar energy, from a localized thermal energy source to another form of energy or work comprise dual thermodynamic cycle systems that utilize the liquid-to-gas phase transitions of a cryogenic fluid such as liquid nitrogen and a working fluid such as sulfur hexafluoride to drive prime movers. Heat transfer between the fluids as they undergo the phase transitions is used to increase the energy in the system and its work output, and improve system efficiency.

Waste heat energy conversion cycles, systems and devices use multiple waste heat exchangers arranged in series in a waste heat stream, and multiple thermodynamic cycles run in parallel with the waste heat exchangers in order to maximize thermal energy extraction from the waste heat stream by a working fluid. The parallel cycles operate in different temperature ranges with a lower temperature work output used to drive a working fluid pump. A working fluid mass management system is integrated into or connected to the cycles.

A microelectromechanical systems (MEMS) based heat engine capable of converting thermal energy gradients into mechanical or electrical energy, as well as its fabrication process is disclosed. This heat engine design consists of a stressed oscillating beam formed from a shape memory alloy (SMA) thin film. As the temperature of the beam changes, its shape changes due to the phase transformation of the shape memory alloy, causing it to oscillate between a hot source and a cold source. Due to the hysteretic behavior of the phase transformation, the oscillating SMA cantilever beam produces a net mechanical work output that may be either converted to electrical energy or mechanically linked to other MEMS devices.

The invention provides a method and device for improving the efficiency of a turbine engine and relates to a rotor and an engine. According to the method, turbine rotors are replaced by screw pipe rotors; the turbine engine is manufactured into a hydraulic screw pipe rotor engine, a gas screw pipe rotor engine, a steam screw pipe rotor engine or a compressed air screw pipe rotor engine; the flow direction of a flowing work medium in the screw pipe of the screw pipe rotor is continuously changed; the energy of the flowing work medium is converted to mechanical output power; the energy loss, irrelevant to acting process, of the flowing work medium is reduced; the amount of screw pipes of the screw pipe rotor or the diameter of each screw pipe is reduced to handle the flow decrease of the work medium caused by the decrease of installed power, so that the diameter of the screw pipe rotor does not need to be reduced. According to the method, the efficiencies of the engines can be further improved by more than 5%; the gas screw pipe rotor engine and the steam screw pipe rotor engine can be used as engines of conventional vehicles; and devices such as a ship, an aircraft, a power generation device and a conventional vehicle provided with the screw pipe rotor engine are more energy-saving and environment-friendly.

A heat engine capable of significantly higher thermal efficiencies than existing heat engines operating within the same temperature ranges, wherein the heat engine can operate efficiently as either a forward heat engine or as a reverse heat engine at any given selected moment; thus, permitting the present heat engine to be utilized as an air conditioner or heat pump, or, alternatively, if a heat source is provided to the engine, as a forward heat engine producing a work output.

A method and apparatus for accurately determining TTX: in a cylinder of an internal combustion engine. Gas pressure is measured in the cylinder relative to crank angle, giving rise to a curve of gas pressure with crank angle. An offset is found by first computing the angular position of an inflexion point of the compression pressure curve measured as a function of the crank angle, and then computing the offset as the difference between the angular position of a piston in the cylinder and a theoretical value for said angular position of the piston dependent on a known or measured flywheel angle. The value of TDC corrected by the offset is then used to calculate a value of work output such as the indicated Mean Effective Pressure (IMEP) which may be used for diagnostic and / or control purposes.

The invention discloses a server power supply fault detection method. The server power supply fault detection method comprises a CPLD and a BMC. The CPLD is used for acquiring a start working signal and a normal working output signal of each power supply of the server node; Judging the failure state corresponding to each power supply according to the start working signal and the normal working output signal; Storing the failure state in a preset storage device; And the BMC is connected with the CPLD and is used for reading the failure state from the preset storage equipment when a reading instruction is received so as to position the failure power supply. The failure states of all the power supplies are determined through the CPLD and stored in the preset storage device, when the BMC receives the reading instruction, the failure states stored in the preset storage device can be obtained through connection with the CPLD, and therefore rapid positioning of power supply faults is achieved. The invention further discloses a server power supply fault detection method, device and equipment and a storage medium, and the above technical effects can also be achieved.

A microelectromechanical systems (MEMS) based heat engine capable of converting thermal energy gradients into mechanical or electrical energy, as well as its fabrication process is disclosed. This heat engine design consists of a stressed oscillating beam formed from a shape memory alloy (SMA) thin film. As the temperature of the beam changes, its shape changes due to the phase transformation of the shape memory alloy, causing it to oscillate between a hot source and a cold source. Due to the hysteretic behavior of the phase transformation, the oscillating SMA cantilever beam produces a net mechanical work output that may be either converted to electrical energy or mechanically linked to other MEMS devices.

Systems and methods are provided to compute indicators of completeness of the work output of a transformation of text-based content, worker capacity in performing the transformation, and / or the degree of matching between a unit of work and a worker, based on information collected about complexity of works, times and throughput of workers, rating of work outputs and using natural language processing techniques and machine learning techniques, such as language detection, longest common substring, length ratio, document similarity, etc. The indicators are utilized to optimize job pickup and output submission for online crowdsourcing tasks related to transformation of text-based content, such as transcription, translation, proofreading, etc.

A self-propelled working machine, which performs work by using power of an internal combustion engine 10 and travels by using power of an electric motor 30, includes a mechanical governor 75 for maintaining the engine at a designated engine rotational speed Nf. A load control mechanism for the working machine has a maximum working output calculator that calculates a maximum working output Qf from the designated engine rotational speed, an actual working load calculator that calculates an actual working load Qr from the designated engine rotational speed Nf and a detected actual engine rotational speed Nr, and a limit speed calculator that calculates a limit speed Vc from the maximum working output Qf and the actual working load Qr. A travel controller operates and controls the electric motor 30 by setting a travel speed V to the limit speed Vc when the actual engine rotational speed Nr is decreased to be lower than the designated engine rotational speed Nf. The travel speed of the working machine is automatically controlled so that the working load is calculated from the driving condition of the internal combustion engine to ensure the working load to be appropriate. Thus excellent finish of the working is maintained and the operator is relieved from burden.

The present invention comprises correlated magnet actuators, devices incorporating said actuators, and methods of use thereof. The actuators utilize magnetic drives comprising a pair of complimentary correlated permanent magnet pairs, arranged in a separable and opposing fashion. The attractive or repulsive force of each correlated magnet pair drops significantly after only a few degrees of rotation off of a prime attractive or repulsive rotational alignment, allowing the magnets to be binarily manipulated between a correlated and decorrelated alignment. The linear motion resulting from the periodic coupling and decoupling of the magnetic pair can be translated to supporting conveyance structures to produce rotary (torque) output work. This output work can be harnessed to drive secondary utilization components such as a generator or a pump, or other devices dependent on rotary work output for their operation.

A user interface for an application program which displays documents having colored objects on a working output device such as a CRT, and which outputs the document to a target output device such as a printer that has a color gamut different from that of the working output device. The user interface allows selection from among multiple different colors. The user interface of the present invention includes a region that displays multiple different colors or colored objects, at least some of which are selectable by the user, wherein for these selectable colors or colored objects, only in-gamut colors are displayed.

The invention provides a recovery system with heat accumulator for internal combustion engine exhausting waste heat and a ontrol method. The internal combustion engine exhausting waste heat is transmitted to organic fluid in an organic rankine cycle by utilizing a conduction oil circuit, and evaporation of the organic fluid is realized; heat from the organic fluid is absorbed or released by utilizing the heat accumulator in series with the organic rankine cycle; enthalpy change in expansion process is converted into useful work output by utilizing an expander; organic fluid flow is adjusted in a small scope according to rotating speed and load of the internal combustion engine; closed loop control of the fluid flow in the heat accumulator circuit is realized according to an overheating temperature of the organic fluid in the outlet of the heat accumulator; closed loop control of the heat conduction oil flow is realized with tail gas temperature in the outlet of the exhaust pipe as feedback; and closed loop control of a fan motor is realized with the organic fluid temperature in the outlet of a condenser as feedback. The waste heat recovery system can fully utilize the engine exhausting waste heat and guaranties that flow change of the organic fluid is not significant when the exhausting waste heat changes in a large scope in a dynamic working process of the engine, thus a small output-power fluctuation amplitude of the expander is guarantied.

A method and apparatus for accurately determining TDC in a cylinder of an internal combustion engine. Gas pressure is measured in the cylinder relative to crank angle, giving rise to a curve of gas pressure with crank angle. An offset is found by first computing the angular position of an inflexion point of the compression pressure curve measured as a function of the crank angle, and then computing the offset as the difference between the angular position of a piston in the cylinder and a theoretical value for said angular position of the piston dependent on a known or measured flywheel angle. The value of TDC corrected by the offset is then used to calculate a value of work output such as the Indicated Mean Effective Pressure (IMEP) which may be used for diagnostic and / or control purposes.

The invention discloses a method for comprehensively optimizing energy storing power station planning and operating. The method comprises the first step of constructing a real-part matrix G and a virtual matrix B of a node admittance matrix used for carrying out load flow calculation according to network parameters of an electric power system and determining the upper limit value and the lower limit value of voltage of all nodes and the upper limit value and the lower limit value of all line power flow when the electric power system operates safely and stably, the second step of determining the upper limit value and the lower limit value of work output of a common electric generator, determining generating cost parameters of the common electric generator, determining the upper limit value and the lower limit value of the work output of a wind turbine generator or a wind power motor field and determining the penalty electricity price for draught fan fault according to the power source parameters of the electric power system, the third step of determining the capacity price, the power price and the average service life of an energy storage system and daily maintenance charge according to parameters of the energy storage system, the fourth step of determining the typical day wind power predicted data of the wind turbine generator or the wind power motor field, determining the day load data, determining the backup data of rotating of the electric power system and determining the transmission loss price of the electric power system according to scheduling operating data of the electric power system, and the last step of determining an inner layer optimization model and an outer layer optimization model according to the data collected in the first step, the second step, the third step and the fourth step.

A method is disclosed for balancing work output from cylinder banks of an engine having a common crankshaft and separate intake camshafts with cam phasers for each bank. The method includes sensing a crankshaft rotational characteristic, such as instantaneous rotational speed or acceleration, during the power strokes of pistons of predetermined comparable cylinders (or all cylinders) of each bank, computing average crankshaft rotational characteristics for the power strokes of the comparable cylinders of each bank, and adjusting the phasing of at least one of the intake camshafts to obtain equal averages of the sensed characteristics of the crankshaft during the power strokes of the respective banks.

In a multi-mode, 2-stroke / 4-stroke internal combustion engine operation, by switching the engine stroke from 4-stroke operation to 2-stroke operation so that the combustion frequency is doubled, doubling of the engine power is achieved even at the same work output per cycle. In order to meet the demand of extremely high power, the engine operates in 4-stroke boosted SI operation transitioned from 2-stroke HCCI operation at pre-set level of power and crank speed requirements. By combining the multi-stroke (2-stroke HCCI and 4-stroke HCCI) and multi-mode operation (2-stroke HCCI and 4-stroke boosted SI operation), full load range and overall high efficiency with minimal NOx emission are achieved.

A system for balancing first and second work outputs between first and second cylinder banks of an engine includes a first intake camshaft associated the first cylinder bank and a first fuel injector associated with the first cylinder bank. A controller trims a pulse-width of the first fuel injector until first and second A / F ratios of respective exhaust of the first and second cylinder banks are equivalent. The controller adjusts timing of the first intake camshaft to effect air flow into the first cylinder bank and trims the pulse-width to maintain equivalency of the first and second A / F ratios.

A method and device for achieving complete combustion and greater efficiency throughout a broad range of power outputs in a four-stroke internal combustion engine intended for use mostly at sea level by providing a means of controlling the amount of air to be compressed in a fixed ratio to the amount of fuel to be injected together with a means of controlling of the volume to which the fuel-to-air mixture is to be compressed prior to ignition in a fixed optimum ratio to the volume of air taken in with an ability to use different octane fuels and a power stroke that is always longer than the adjusted compression stroke in order to yield greater work output at lower exhaust pressure than engines designed for equal compression and power stroke operation. This reduces fuel consumption, noise and pollution and improves total engine efficiency to 35-40%.

A common regulator valve is provided for a variable displacement pump fuel metering scheme in which the common regulator valve both controls working output to a pump actuator to control displacement of the variable displacement pump and also to control bypass of excess fuel flow. The regulator valve also includes a differential piston which generates a compensation force off of the bypass flow in order to compensate for changes in spring force and flow reaction force at different system pressures and operational states. As a result, errors in the metered fuel flow can be either eliminated or substantially reduced.

This invention describes a miniaturized hybrid diesel-electric engine formed by a closed-loop system powered by plasma-aided combustion of JP-8 fuel (or other hydrocarbon fuels) working in tandem with a vapor cycle utilizing miniaturized expanders and condensers. The output of this engine is electric power and mechanical work. Water, or organic fluids, heated by the combustion product developed inside a special burner, undergoes an explosive, quasi-supersonic conversion to steam. This steam drives a high-speed turbine connected together with a gas turbine outputting shaft work. This work output is utilized to power internal subsystems, cool down the miniaturized condensers, and to produce torque and electric power. The dimensions of this miniaturized hybrid-engine are so compact that it can fit inside the battery compartment of most applications requiring high-density miniaturized power sources.

A multi-functional modular device includes: a shaft; electric motor(s); propeller(s); battery(s); and paddle blade(s) being removably attachable to the shaft for levering of a boat. With the blade(s) attached to the shaft and motor(s) de-energized, the device is usable for manual levering, and with the motor(s) energized, propeller thrust selectively assists in levering to propel the boat. Propeller thrust in a direction opposite to a propulsive direction from levering reduces work required per stroke, reducing the total levering power per stroke. Alternatively, using the thrust in the same direction as propulsive levering increases total propulsive power per stroke, but requires greater strength / work output by the rower / paddler. Removing the blade permits the propeller and motor to be statically submerged and clocked for directional propulsion. A hinged kayak paddle embodiment is adapted for pure levering, and is convertible to a propulsion device by releasably attaching an electric pod motor to the blade(s).

The present invention discloses a method for, online editing and publishing and the device thereof. The method for online editing and publishing comprises the following steps: obtaining from a storage unit or from the Internet, at least one figure with first configuration data; editing the at least one figure in an area of a web page, wherein the web page has at least one tool around the area for editing; generating a first drawing result from the editing; and publishing the first drawing result to the Internet through the web page of a website. With the present invention, the process of generating works may be simpler and faster than before; thereby the efficiency of work output and the number of works are increased.

The invention relates to the technical field of power generation, in particular to a supercritical carbon dioxide recompression cycle power generation system and an operation method. The system comprises a first heat exchange path, a second heat exchange path, a first compression path, a second compression path, a heat absorption path, a work output path and a heat return path, wherein the first compression path and the second compression path are arranged in parallel and form the same input end, and the first compression path and the second compression path are converged through the heat return path and form the same output end; the output end of the first heat exchange path communicates with the same input end, and the same output end communicates with the input end of the second heat exchange path; the output end of the second heat exchange path, the heat absorption path and the input end of the work output path sequentially communicate with one another; and the output end of the work output path communicates with the input end of the first heat exchange path, the work output path is provided with a turbine, and a circulation bypass provided with a turbine bypass valve is formedbetween the outlet end of the turbine and the heat exchange paths.

An actuation assembly adapted for driving a load and protecting against overloading and overheating conditions, includes an actuator defining a stroke when exposed to an activation signal, and further includes a protection device comprising a superelastic shape memory alloy element connected in series to and cooperatively configured with the actuator, and operable to both produce a secondary work output path for the actuator and discontinue the signal.