Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

333results about How to "Restore performance" patented technology

Repair of acoustically treated structures

InactiveUS8696843B1Restores acoustic and structural performance of structureMinimum of aircraft downtimeElectrical transducersRecord carriersHoneycombMaterials science
A method of repairing an acoustically treated area of a composite honeycomb sandwich structure restores the acoustic performance of the structure. An impaired section of the honeycomb core is removed and replaced with a honeycomb repair plug. Cell walls of the repair plug are bonded to cell walls of the core.
Owner:THE BOEING CO

Charge loss correction

The present disclosure relates to the correction of charge loss in a radiation detector. In one embodiment, correction factors for charge loss may be determined based on depth of interaction and lateral position within a radiation detector of a charge creating event. The correction factors may be applied to subsequently measured signals to correct for the occurrence of charge loss in the measured signals.
Owner:GENERAL ELECTRIC CO

Hydrogen gasoline mixed fuel engine and its control method

The invention relates to a hydrogen-gasoline mixed fuel engine and its control method, which mainly includes an electric control gasoline injection and ignition system and an electric control hydrogen injection and ignition system. The electric control hydrogen injection and ignition system includes a hydrogen injection and ignition control unit, a fuel injection pulse width control module and an ignition angular advance control module. The fuel injection pulse width control module is disposed between the electronic control unit and the fuel nozzle controlled by the hydrogen injection and ignition control unit. The ignition angular advance control module is disposed between the electronic control unit and the ignition module controlled by the hydrogen injection and ignition control unit.
Owner:BEIJING UNIV OF TECH

Exhaust gas temperature control method, exhaust gas temperature control apparatus, and internal combustion engine system

The exhaust gas temperature control method includes executing an exhaust gas temperature control to raise an exhaust gas temperature upon determining that a purificatory performance of an exhaust gas purification device of an engine has declined. The step of executing of the exhaust gas temperature control includes performing a first fuel injection control in which a timing of a main fuel injection is retarded and a post fuel injection is executed after the main fuel injection when the internal combustion engine is operating in the first operating region, and performing a second fuel injection control in which the timing of the main fuel injection is retarded and an execution of the post fuel injection after the main fuel injection is prohibited when the internal combustion engine is operating in the second operating region.
Owner:NISSAN MOTOR CO LTD

PID resistant device for solar photovoltaic component using non-isolated inverter

The present invention discloses a PID resistant device for a solar photovoltaic component using a non-isolated inverter. The device comprises a direct current power supply, a grounding switch, a diode, a timer and a control circuit. The PID resistant device of the present invention is able to automatically apply a positive to-earth direct current close to an open-circuit output voltage value of the solar photovoltaic component between the cathode at the voltage output of the solar photovoltaic component when the solar photovoltaic component is at a night inactive state, thereby counteracting the influence caused by the fact that the cathode at the voltage output of the solar photovoltaic component is at a negative voltage in the daytime, and realizing the suppression of PID phenomenon and performance recovery for the solar photovoltaic component and achieving the restoration of polarization effect generated in the daytime; furthermore, when the solar photovoltaic component is at an electricity generation state at the day time, the grounding switch 6 is automatically opened so as to effectively prevent the PID resistant device of the present invention from influencing the normal operation of the solar photovoltaic component.
Owner:JA YANGZHOU SOLAR PHOTOVOLTAIC ENG

Wind generator set and fatigue load monitoring system thereof

The invention discloses a fatigue load monitoring system for a wind generator set, comprising a first detecting device (211), a second detecting device (212), a control device (22) and an output device (23). The first detecting device (211) is used for detecting the fatigue state of the root of a tower barrel to obtain a first detection signal; the second detecting device (212) is used for detecting the fatigue state of at least one position outside the root of the tower barrel to obtain a second detection signal; the control device (22) is used for receiving the first detection signal and the second detection signal, processing the first detection signal and the second detection signal according to a preset strategy to obtain an actual damage value, and then comparing the actual damage value and the preset damage value to judge the damage state of the monitored position of the wind generator set; and the output device (23) is used for outputting the actual damage value of the monitored positioned. The fatigue load monitoring system has higher monitoring precision so as to maintain each member of the wind generator set in time and prolong the service life of each member. The invention also discloses the wind generator set comprising the fatigue load monitoring system.
Owner:SANY ELECTRIC CO LTD

Double-side polishing device and method capable of controlling rigidity of polishing pad through cluster dynamic magnetic field

ActiveCN105904333AAvoid the important problem of uneven processingLow costEdge grinding machinesGrinding carriagesEngineeringLinear motor
The embodiment of the invention discloses a double-side polishing device and method capable of controlling the rigidity of a polishing pad through a cluster dynamic magnetic field. The whole process from rough polishing to fine polishing of both sides of a workpiece is achieved by adjusting the rigidity of the flexible polishing pad, and the problem that in the traditional machining process, machining of the workpiece is nonuniform due to the fact that the relative speed between different positions of the workpiece and the polishing pad is inconsistent is solved. The double-side polishing device capable of controlling the rigidity of the polishing pad through the cluster dynamic magnetic field comprises a variable-rigidity cluster magnetic-control polishing pad generating mechanism, a workpiece fast clamping mechanism and a workpiece movement driving mechanism, wherein the variable-rigidity cluster magnetic-control polishing pad generating mechanism comprises a first magnetic field generating block and a second magnetic field generating block which are arranged symmetrically; the first magnetic field generating block and the second magnetic field generating block each comprise a shell, a deflection spindle, an eccentric camshaft, a magnetic mounting seat, permanent magnets and a motor; the workpiece fast clamping mechanism comprises a working slot, a clamping plate, a connecting rod, a hinge plate, a fixed hinge, a square magnet, an electrical soft iron block, annular cast iron and a strip-shaped permanent magnet; and the workpiece movement driving mechanism comprises a supporting block, a crossbeam, a horizontal linear motor, a vertical beam and a vertical linear motor.
Owner:GUANGDONG UNIV OF TECH

Systems and methods for transient-pressure testing of water injection wells to determine reservoir damages

ActiveUS20170234121A1Restore injection performanceMinimized volumeSurveyFluid removalReservoir waterInjection rate
Provided in some embodiments are systems and methods for transient-pressure test of an oil reservoir water injection well system. Embodiments provide for determining a fracturing injection rate for the well, setting a test injection rate preferably below the fracturing injection rate, conducting a stabilized injection of water into a wellbore of the well at the test injection rate for a prescribed period, and conducting a fall-off test including shutting-in the well for a prescribed fall-off period, and acquiring test data indicative of fluid pressure in the wellbore of the well during the injection and the fall-off periods. Embodiments also provide for generating a model prediction, comparing the model to the test data to determine whether it is a match for the well, and associating the parameter values with the well, including the severity and the location of the shallow damage, if the reservoir model is a match.
Owner:SAUDI ARABIAN OIL CO

Method for testing instability of a negative bias temperature

The invention discloses a method for testing instability of a negative bias temperature. The method comprises the following steps: determining the service life of a device under at least two different test negative biases, and determining a functional relationship between the test negative bias and the service life of the device in a fitting manner; calculating the service life of the device in a normal working state under a working negative bias according to the determined functional relationship; and comparing the calculated service life of the device with a pre-set threshold, wherein if the calculated service life is longer than the threshold, the test is passed. In the process of testing the service life of the device under different test negative biases, the test negative bias is reduced to the working negative bias before measuring a designated parameter of the device each time so as to avoid recovery of the device performance, ensure the accuracy of the measurement result and the accuracy of the entire test process and increase the processing speed of the entire test process; and moreover, compared with the prior art, only one important parameter of the device is tested in the scheme of the invention, and thus the test speed is further increased.
Owner:SEMICON MFG INT (SHANGHAI) CORP +1

Chemical cleaning method for nanofiltration or reverse osmosis membranes

InactiveCN109224870AExtended service lifeImprove clear liquid handling capacitySemi-permeable membranesReverse osmosisNanofiltration
The invention discloses a chemical cleaning method for nanofiltration or reverse osmosis membranes. The chemical cleaning method includes the following steps: (1) pickling the nanofiltration or reverse osmosis membranes by acidic solutions; (2) cleaning the nanofiltration or reverse osmosis membranes by product water after pickling; (3) performing alkali washing on the nanofiltration or reverse osmosis membranes by alkaline cleaning solutions; (4) cleaning the nanofiltration or reverse osmosis membranes by the product water after alkali washing to complete cleaning of the nanofiltration or reverse osmosis membranes. The chemical cleaning method has the advantages that various pollutants on the nanofiltration or reverse osmosis membranes can be efficiently removed, the operating pressure ofthe nanofiltration or reverse osmosis membranes can be reduced, the yield of clear liquid of the nanofiltration or reverse osmosis membranes can be increased, the service life of the nanofiltration or reverse osmosis membranes can be prolonged, the power consumption of the clear liquid can be lowered, and stable operation of landfill leachate treatment plants can be guaranteed; the chemical cleaning method has the advantages of simple process, convenience in operation, low cleaning cost, high cleaning efficiency, good cleaning effect, high application value, good application prospect and thelike.
Owner:HUNAN JUNXIN ENVIRONMENTAL PROTECTION CO LTD

Aromatic olefin-reducing catalyst and use thereof

The present invention relates to an aromatic olefin-reducing catalyst mainly solving the problems of short carclazyte life, frequent replacement, large labor intensity, and serious environmental pollution when the carclazyte is used for removing trace olefins in an aromatic material in current industry. The aromatic olefin-reducing catalyst is used, the average pore diameter of the aromatic olefin-reducing catalyst is 5-30nm, the aromatic olefin-reducing catalyst comprises the following components by weight: 0 to 15% of lanthanide elements or a mixture thereof; 0 to 20% of oxides of one or more elements selected from Ca, Zn , Mg and Ti; and 30 to 90% of a molecular sieve, the molecular sieve is at least one selected from mordenite, Y zeolite, ZSM-5 molecular sieve, MCM-22 molecular sieve, MCM-56 molecular sieve, and beta-molecular sieve; and a carrier is one substance selected from alumina and silica or a mixture thereof, and by the technical scheme, the problem is preferably solved, and the method can be used for aromatic olefin-reducing industrial production.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method and device for recovering fuel battery electric pile performance

The invention relates to the technical field of a fuel battery, and discloses a method and device for recovering the fuel battery electric pile performance. The method for recovering the fuel batteryelectric pile performance comprises the following steps of starting a load; loading the current to 200A; enabling the fuel battery electric pile to continuously operate for 5min at 200A; setting the temperature difference of the fuel battery electric pile, the temperature of cooling water, the temperature of the air, the temperature of hydrogen gas, the dew point temperature of the air and the dewpoint temperature of the hydrogen gas; enabling the pressure of the hydrogen gas to be higher than the pressure of the oxygen; loading the current from 200 A to 300 A; continuously operating the fuelbattery electric pile for 30min at 300A; if the output power of the of the fuel battery electric pile equals to or is higher than the preset power, or the average voltage equals to or is higher thanthe preset voltage, the fuel battery electric pile performance recovery is completed. The method for recovering the fuel battery electric pile performance of the embodiment is simple and convenient; the realization is easy; the performance of the fuel battery electric pile in a non-operation state for a long time can be fast recovered, so that the performance recovery efficiency of the fuel battery electric pile is improved.
Owner:北京国鸿氢能科技有限公司 +1

Bituminous cold reclaiming agent and application of bituminous cold reclaiming agent in cold reclaiming of bituminous concrete

The invention relates to a bituminous cold reclaiming agent and application of the bituminous cold reclaiming agent in cold reclaiming of bituminous concrete. The bituminous cold reclaiming agent comprises an impregnating compound and a desiccating agent. The bituminous cold reclaiming agent is strong in permeation and infiltration force and enables aging bitumen in reclaimed asphalt pavement (RAP) to be activated and recover performance of the bitumen, and then the desiccating agent is added to volatilize diluents in an infiltration material to solidify the infiltration material to form strength. Finally, the void ratio of reclaimed asphalt mixture is lower than 6%, strength performance, water stabilizing performance, high-temperature performance and low-temperature performance achieve performance indexes of hot-mix asphalt mixture, and operating requirements of upper and middle surface layers of asphalt roads in each level are met. According to the invention, the method is simple and easy to operate and energy-saving, the used bituminous concrete for each structure layer of asphalt concrete pavements in each level can be completely used and reused under the condition that composite cost is not greatly increased, and wide popularization and application values are achieved.
Owner:重庆市智翔铺道技术工程有限公司

Liquid droplet ejecting apparatus

There is disclosed a liquid droplet ejecting apparatus including: a tank storing a liquid; a nozzle from which the liquid is ejected in the form of a droplet; a first pressure-feed portion which is disposed between the tank and the nozzle, and pressure-feeds the liquid as supplied from the tank, to eject the liquid droplet from the nozzle; a second pressure-feed portion which has an inner volume larger than that of the first pressure-feed portion, and is disposed between the tank and the first pressure-feed portion, the second pressure-feed portion pressure-feeding the liquid as supplied from the tank to the nozzle via the first pressure-feed portion, to eject the liquid from the nozzle in an amount larger than an amount of the liquid ejected by the first pressure-feed portion as the liquid droplet; and the second pressure-feed portion including: a pressure chamber; a pressurizing member that pressurizes the liquid in the pressure chamber by decreasing an inner volume of the pressure chamber; and a liquid communication passage which holds the tank and the nozzle in communication with each other via the pressure chamber, and which includes a flow resistance generator which is disposed in at least one of a portion of the liquid communication passage between the tank and the pressure chamber, and a portion of the liquid communication passage between the pressure chamber and the nozzle, the flow resistance generator giving a flow resistance to the liquid as flowing in the at least one of the two portions of the liquid communication passage.
Owner:BROTHER KOGYO KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products