Patent application number | Description | Published |
20090035613 | FUEL CELL SYSTEM - The present invention provides a fuel cell system having means for controlling the flow of coolant within a fuel cell system. A desirable rate of flow of coolant is created, during power generation, by determining the difference in temperature between coolant flowing into individual cell sets of the fuel cell assembly and the temperature of coolant exhausted from the cell assembly. The fuel cell system features controls adapted to evaluate the heat generation state of each fuel cell set and to regulate the temperature of cell sets by controlling the rate circulation of the coolant. | 02-05-2009 |
20090087708 | FUEL CELL SYSTEM - A fuel cell system according to this invention comprises: a pressurizing valve ( | 04-02-2009 |
20100304260 | FUEL CELL SYSTEM AND METHOD OF CONTROLLING FUEL CELL SYSTEM - A fuel cell stack includes a heat exchange unit that performs heat exchange between a gas mixture containing source hydrogen and a circulating gas and cooling water used for controlling the temperature of the fuel cell stack. A system controller adjusts the temperature of the cooling water by controlling a temperature control unit on the basis of the temperature of source hydrogen flowing into a junction at which the source hydrogen and a circulating gas are mixed such that the temperature of a source/recirculated hydrogen mixture that is mixed at the junction and that is supplied to the fuel cell stack is kept within a managed temperature range. | 12-02-2010 |
20100323261 | FUEL CELL SYSTEM - A fuel cell system having a fuel cell, a coolant supply device for circulating a supply of the coolant through a coolant path for cooling the fuel cell, a fuel cell temperature detector for detecting a temperature of the fuel cell, a coolant temperature detector for detecting a temperature of the coolant in the coolant path, and a controller for controlling the amount of coolant circulated by the coolant supply device. The controller selects an operation mode of the fuel cell between a power generation mode and a power generation stop mode and calculates the difference between the detected coolant temperature and detected fuel cell temperature. While the operation mode is the power generation stop mode, the controller increases the amount of the coolant circulated as the difference between the detected coolant temperature and the detected fuel cell temperature increases. | 12-23-2010 |
20110076580 | FUEL CELL SYSTEM, AND METHOD OF STOPPING FUEL CELL SYSTEM - For implementing a stop control which extracts a current from a fuel cell and consumes a cathode side oxygen at a system stop, the current extraction from the fuel cell is ended in a state that a certain quantity of oxygen smaller than when the current extraction is started remains on a cathode side of the fuel cell. With this, the hydrogen movement to the cathode side after the system stop can be effectively suppressed and thereby a cathode internal hydrogen concentration at the system start can be kept low, thus making it possible to properly process the cathode side hydrogen at the system start. | 03-31-2011 |
20110086285 | FUEL CELL SYSTEM AND METHOD FOR CONTROLLING FUEL CELL SYSTEM - A fuel cell system includes a fuel cell having an anode, a cathode, and an electrolyte membrane disposed therebetween. An oxidant gas supplying device supplies oxidant gas to the cathode, an oxidant gas backpressure regulating device regulates the pressure of the oxidant gas at the cathode according to a valve opening, and a pressure detecting device detects the oxidant gas pressure at the cathode. During a start-up fuel gas disposal process, a controller controls the oxidant gas supplying device to supply the oxidant gas at a standard oxidant gas flow, controls the valve opening of the oxidant gas backpressure regulating device to a first valve opening, and controls the valve opening of the oxidant gas backpressure regulating device to a second valve opening which is greater than the first valve opening when the oxidant gas pressure detected by the pressure detecting device reaches an elevation target pressure. | 04-14-2011 |
Patent application number | Description | Published |
20130137003 | FUEL CELL SYSTEM - A fuel cell system is provided with a fuel cell, a gas supply passage which supplies a reaction gas to the fuel cell, a humidifier which humidifies the reaction gas, a first gas discharge passage which leads from a first gas discharge outlet of the fuel cell through the humidifier to the outside, and a second gas discharge flow passage which leads from a second gas discharge outlet of the fuel cell to the outside. A flow rate control mechanism which controls the flow rate of discharge gas is provided in at least one of the first gas discharge passage and the second gas discharge passage. The configuration reduces the distance between the fuel cell and the humidifier to obtain a compact system structure. | 05-30-2013 |
20130202976 | FUEL CELL SYSTEM AND OPERATING METHOD THEREOF - A fuel cell system includes: a fuel cell stack (S) formed by stacking multiple unit cells (C) horizontally and having, in the stacked body, manifolds through which to supply and discharge reaction gases to and from each of the unit cells (C); and drainage paths ( | 08-08-2013 |
20140080025 | FUEL CELL SYSTEM - A fuel cell system includes a fuel cell, a control valve and a controller. The fuel cell is configured to receive anode gas and cathode gas to generate electric power. The control valve is configured to control pressure of the anode gas being fed to the fuel cell through an anode flow channel. The controller controls the control valve to periodically increase and decrease the pressure of the anode gas flowing through the anode flow channel in an area downstream of the control valve. The controller sets an anode pressure differential value for the anode gas resulting from periodic increasing and decreasing of the pressure of the anode gas based on a requested fuel cell output. The controller determines a quantity of liquid in the anode flow channel. The controller decreases the anode pressure differential value that was set based on the requested fuel cell output. | 03-20-2014 |
20140349208 | FUEL CELL SYSTEM - In a fuel cell system including a load and a fuel cell stack connected to the load and supplying an anode gas and a cathode gas to the fuel cell stack to generate power according to the load, the fuel cell system includes, a pressure setting unit configured to set a pressure of the anode gas higher when the load is high as compared with when the load is low, a stagnation point determination unit configured to determine, according to a state of power generation of the fuel cell stack, whether or not a nitrogen stagnation point is left in a reaction flow path within the fuel cell stack, and an operation control unit configured to performs an operation while preventing the pressure of the anode gas from being lowered when a required load is lowered in a state where the nitrogen stagnation point is left. | 11-27-2014 |
20150030948 | FUEL CELL SYSTEM AND CONTROL METHOD OF FUEL CELL SYSTEM - A fuel cell system includes a pressure regulating valve for controlling a pressure of an anode gas, a purge valve for controlling a discharge amount of an anode off-gas, the purge valve being configured to change an opening area thereof at least on two stages, a pulsation operation control means configured to control the pressure regulating valve so that the pressure of the anode gas in a fuel cell when a load is high becomes higher than when the load is low, and so that the pressure of the anode gas is periodically increased and decreased at a predetermined load, and a purge valve control means configured to increase the opening area of the purge valve used during a descending transition operation so that the opening area becomes larger than the opening area used during other operations. | 01-29-2015 |
20150044582 | FUEL CELL SYSTEM - A fuel cell system supplies a fuel cell with an anode gas and a cathode gas, thereby generating electric power. The fuel cell system includes: a control valve for controlling a pressure of the anode gas in the fuel cell; a buffer part for accumulating an anode off-gas discharged from the fuel cell; an off-gas discharge passage for connecting the fuel cell and the buffer part with each other; a purge passage connected to the off-gas discharge passage; a purge valve; a purge unit configured to open the purge valve to discharge the gas in the buffer part to an outside of the fuel cell system; and a pressure control unit configured to decrease the pressure of the anode gas in the fuel cell from a first predetermined pressure to a second predetermined pressure, thereby controlling the gas in the buffer part to flow backward to the fuel cell side. | 02-12-2015 |
20150056533 | FUEL CELL SYSTEM - A fuel cell system includes a target pressure setting unit configured to periodically and repeatedly set a target upper limit pressure and a target lower limit pressure as a target pressure of anode gas. An upper limit pressure setting unit is configured to set the smaller one of an upper limit value based on durability performance and an upper limit value based on output performance as an upper limit pressure of the anode gas. The target pressure setting unit sets a value smaller than the upper limit value as the target upper limit pressure when the upper limit value based on the durability performance of the fuel cell is selected as the upper limit pressure of the anode gas, and sets a pressure higher than the upper limit value as the target upper limit pressure when the upper limit value based on the output performance is selected. | 02-26-2015 |
20150140365 | FUEL CELL SYSTEM - A fuel cell system includes a compressor provided in a cathode gas supply passage configured to feed the cathode gas under pressure to the fuel cell, a bypass passage configured to discharge the cathode gas fed under pressure by the compressor to a cathode gas discharge passage while bypassing the fuel cell, a bypass valve provided in the bypass passage and configured to adjust a flow rate of the cathode gas flowing in the bypass passage, a system stopping unit configured to stop the fuel cell system by performing a predetermined stop sequence process when a request to stop the fuel cell system is made, and a stop-time bypass valve control unit configured to control a valve body of the bypass valve to a predetermined initialization position in parallel with the sequence process during the stop sequence process. | 05-21-2015 |
20150162629 | FUEL CELL SYSTEM - A fuel cell system calculates a target value of a flow rate of cathode gas to be supplied to a fuel cell stack according to a request of the fuel cell stack, controls a flow rate of the cathode gas to be supplied by the compressor according to an operating state of the fuel cell system, controls a bypass valve based on a target fuel cell supply flow rate so that the flow rate of the cathode gas to be supplied from the compressor to the fuel cell stack reaches the target fuel cell supply flow rate, and limits the flow rate of the cathode gas to be supplied by the compressor when the bypass valve has a predetermined opening and the flow rate of the cathode gas to be supplied to the fuel cell stack is not smaller than the target fuel cell supply flow rate. | 06-11-2015 |
Patent application number | Description | Published |
20110226087 | ELECTRIC LEVER - An electric lever device includes a detent mechanism | 09-22-2011 |
20140083792 | STEERING DEVICE OF WHEEL LOADER - A steering device for a wheel loader includes a rotatable handle, a tiltable lever, a steering cylinder, a steering valve, a pump, a handle control valve, a lever control valve, and a handle prioritization valve. The steering valve controls a supply direction of operating fluid to the steering cylinder with pilot hydraulic pressure. The pump supplies operating fluid to the steering cylinder via the steering valve. The handle and lever control valves supply pilot hydraulic pressure to control the supply direction to the steering valve according to handle rotation and lever tilt, respectively. The handle prioritization valve shuts off the pilot hydraulic pressure supplied from the lever control valve to the steering valve according to a differential pressure or an absolute pressure in a hydraulic circuit produced due to operating fluid flowing through the handle control valve when the handle is operated. | 03-27-2014 |
20150259884 | STEERING DEVICE FOR WHEEL LOADER - A steering device for a wheel loader includes a handle for steering, a lever for steering, a steering cylinder, a steering valve that controls a direction of operating fluid to the steering cylinder, and a pump that supplies operating fluid to the steering cylinder via the steering valve. The steering device further includes a handle control valve that controls the supply direction of the operating fluid according the handle, a lever electromagnetic control valve that controls the supply direction of operating fluid according to the lever, and a handle prioritization valve that shuts off a pilot hydraulic pressure supplied from the lever electromagnetic control valve to the steering valve according to a pressure produced by operating fluid flowing through the handle control valve when the handle is operated. The handle prioritization valve includes a switching valve and a priority control valve switchable between a handle stage and a lever stage. | 09-17-2015 |
20150259885 | STEERING DEVICE FOR WHEEL LOADER - A steering device for a wheel loader includes a handle for steering, a lever for steering, a steering cylinder, a steering valve that controls a direction of operating fluid to the steering cylinder, and a pump that supplies operating fluid to the steering cylinder via the steering valve. The steering device further includes a handle control valve that controls the supply direction of the operating fluid according the handle, a lever electromagnetic control valve that controls the supply direction of operating fluid according to the lever, and a handle prioritization valve that shuts off a pilot hydraulic pressure supplied from the lever electromagnetic control valve to the steering valve according to a pressure produced by operating fluid flowing through the handle control valve when the handle is operated. Communication between the lever electromagnetic control valve and the steering valve is allowed when only the lever electromagnetic control valve is operated. | 09-17-2015 |
20150259886 | STEERING DEVICE FOR WHEEL LOADER - A steering device for a wheel loader includes a handle for steering, a lever for steering, a steering cylinder, a steering valve that controls a direction of operating fluid to the steering cylinder, a pump that supplies operating fluid to the steering cylinder via the steering valve, and a return oil passage connected to a tank. The steering device further includes a handle control valve that controls the supply direction of the operating fluid according the handle, a lever electromagnetic control valve that controls the supply direction of operating fluid according to the lever, and a handle prioritization valve that shuts off a pilot hydraulic pressure supplied from the lever electromagnetic control valve to the steering valve according to a pressure produced by operating fluid flowing through the handle control valve when the handle is operated. The handle prioritization valve includes a throttle arranged in the return oil passage. | 09-17-2015 |
20150345991 | STROKE DETECTION DEVICE, STROKE DETECTION METHOD, STROKE DETECTION SYSTEM, OPERATION LEVER UNIT, AND OPERATION LEVER STROKE DETECTION SYSTEM - A stroke detection device includes: four rods provided, moveably along respective axial directions, side by side on a same circumference of a device body, the stroke detection device detecting a change in relative positions of the four rods at a time the rods perform a stroke with respect to the device body; a magnet disposed to each of the rods such that a magnetic field is generated between rods adjacent to each other on the circumference and that the magnetic field varies at a time the rods adjacent to each other on the circumference perform a stroke relatively; and magnetic field detection units disposed on at least three positions between the magnets adjacent to each other in the device body, each of the magnetic field detection unit detecting the magnetic field between the magnets and outputting an electric signal in accordance with the detected magnetic field. | 12-03-2015 |
Patent application number | Description | Published |
20090169415 | MOLD AND MANUFACTURING METHOD THEREOF, AND MOLDED ARTICLE USING THE MOLD - The object of the present invention is to provide a mold which has low reactivity with molten alloys and which is inexpensive, a method for manufacturing the same and a molded article using the mold. A mold | 07-02-2009 |
20090308507 | Ni-BASED COMPOUND SUPERALLOY HAVING EXCELLENT OXIDATION RESISTANCE, METHOD FOR MANUFACTURING THE SAME, AND HEAT-RESISTANT STRUCTURAL MATERIAL - The present invention is characterized in including Al: more than 5 at % to 13 at % or less; V: 3 at % or more to 9.5 at % or less; and Ti: 0 at % or more to 3.5 at % or less, with the remainder being Ni and unavoidable impurities, and having a multi-phase microstructure including a primary L1 | 12-17-2009 |
20100143182 | Ni-BASED SINGLE CRYSTAL SUPERALLOY - A Ni-based single crystal superalloy according to the invention has, for example, a composition including: 5.0 to 7.0 wt % of Al, 4.0 to 10.0 wt % of Ta, 1.1 to 4.5 wt % of Mo, 4.0 to 10.0 wt % of W, 3.1 to 8.0 wt % of Re, 0.0 to 2.0 wt % of Hf, 2.5 to 8.5 wt % of Cr, 0.0 to 9.9 wt % of Co, 0.0 to 4.0 wt % of Nb, and 1.0 to 14.0 wt % of Ru in terms of weight ratio; and the remainder including Ni and incidental impurities. In addition, the contents of Cr, Hf and Al are preferably set so as to satisfy the equation OP≧108. According to the Ni-based single crystal superalloy of the invention, high creep strength can be maintained and the oxidation resistance can be improved. | 06-10-2010 |
20100147485 | MOLD AND MANUFACTURING METHOD THEREOF, AND MOLDED ARTICLE USING THE MOLD - The object of the present invention is to provide a mold which has low reactivity with molten alloys and which is inexpensive, a method for manufacturing the same and a molded article using the mold. A mold | 06-17-2010 |
20150246390 | CENTRIFUGAL CASTING APPARATUS - A centrifugal casting apparatus includes a mold holder placed on a freely rotatable rotary table, and a mold put into and held by the mold holder. The mold holder includes a mold holder body made of a metal material and having a bottomed cylindrical shape, heat insulation members provided on an inner peripheral surface and a bottom surface of the mold holder body, and mold positioning members each made of a ceramic and provided to protrude from the heat insulation member on the bottom surface of the mold holder body. The mold includes a mold body having a cavity into which a molten metal is to be poured, and a mold base provided to the mold body and having mold positioning member insertion holes engageable with the mold positioning members. | 09-03-2015 |
Patent application number | Description | Published |
20100092302 | Ni-BASED SINGLE CRYSTAL SUPERALLOY AND TURBINE BLADE INCORPORATING THE SAME - A Ni-based single crystal superalloy which has the following composition: Co: 0.0 wt % or more to 15.0 wt % or less, Cr: 4.1 to 8.0 wt %, Mo: 2.1 to 6.5 wt %, W: 0.0 to 3.9 wt %, Ta: 4.0 to 10.0 wt %, Al: 4.5 to 6.5 wt %, Ti: 0.0 to 1.0 wt %, Hf: 0.00 to 0.5 wt %, Nb: 0.0 to 3.0 wt %, Re: 3.0 to 8.0 wt % and Ru: 0.5 to 6.5 wt % with the remainder including Ni and unavoidable impurities, wherein P1≦700 is satisfied in which P1 represents a parameter 1, which is obtained by a formula: P1=137×[W (wt %)]+24×[Cr (wt %)]+46×[Mo (wt %)]−18×[Re (wt %)]. The Ni-based single crystal superalloy has excellent specific creep strength. | 04-15-2010 |
20120034098 | Ni-BASED SINGLE CRYSTAL SUPERALLOY AND TURBINE BLADE INCORPORATING THE SAME - A Ni-based single crystal superalloy which has the following composition: Co: 0.0 wt % or more to 15.0 wt % or less, Cr: 4.1 to 8.0 wt %, Mo: 2.1 to 4.5 wt %, W: 0.0 to 3.9 wt %, Ta: 4.0 to 10.0 wt %, Al: 4.5 to 6.5 wt %, Ti: 0.0 to 1.0 wt %, Hf: 0.00 to 0.5 wt %, Nb: 0.0 to 3.0 wt %, Re: 8.1 to 9.9 wt % and Ru: 0.5 to 6.5 wt % with the remainder including Ni and unavoidable impurities. As a result, the Ni-based single crystal superalloy which includes more than 8 wt % of Re in the composition ratio and has excellent specific creep strength and the turbine blade incorporating the Ni-based single crystal superalloy may be made. | 02-09-2012 |
20150292063 | Ni-BASED SINGLE CRYSTAL SUPERALLOY AND TURBINE BLADE INCORPORATING THE SAME - A Ni-based single crystal superalloy which has the following composition: Co: 4.0 to 9.5 wt %, Cr: 5.1 to 8.0 wt %, Mo: 2.1 to 3.5 wt %, W: 0.0 to 2.9 wt %, Ta: 4.0 to 10.0 wt %, Al: 4.5 to 6.5 wt %, Ti: 0.0 to 1.0 wt %, Hf: 0.08 to 0.5 wt %, Nb: 0.0 to 3.0 wt %, Re: 4.5 to 8.0 wt % and Ru: 0.5 to 6.5 wt % with the remainder including Ni and unavoidable impurities, wherein P1≦700 is satisfied in which P1 represents a parameter 1, which is obtained by a formula: P1=137×[W(wt %)]+24×[Cr(wt %)]+46×[Mo(wt %)]−18×[Re(wt %)]. | 10-15-2015 |
Patent application number | Description | Published |
20130266353 | FIXING APPARATUS - A relationship X10-10-2013 | |
20130279953 | FIXING APPARATUS - A fixing apparatus includes: a fixing device for fixing a toner image on a sheet at a nip; and a guiding member for guiding the sheet toward the nip. The guiding member includes: an electroconductive metal plate which is electrically grounded; and an insulating resin member, provided to cover a part of the metal plate, slidable with the sheet. The resin member includes: a plurality of openings, provided at different positions with respect to a direction perpendicular to a sheet conveyance direction, for permitting exposure of the metal plate along the sheet conveyance direction; and a downstream portion, substantially free from a stepped portion, which is provided at a downstreammost portion with respect to the sheet conveyance direction and which is extended flat in the direction perpendicular to the sheet conveyance direction in a sheet conveyance region. | 10-24-2013 |
20140161479 | IMAGE HEATING APPARATUS - An image heating apparatus includes an endless belt; a rotatable member configured to cooperate with the endless belt to form the nip; a back-up member including a heater and an electrode portion connected with the heater; an electric energy supply member mounted to the back-up member; a regulating member mounted to the back-up member to regulate movement of the endless belt in a longitudinal direction thereof; and a covering member for covering the electrode portion when the endless belt is inserted and removed in a longitudinal direction in the state that the electric energy supply member and the regulating member are dismounted from the back-up member. | 06-12-2014 |
20150277312 | IMAGE FIXING DEVICE - A fixing device includes a fixing device for nipping and feeding a sheet to fix a toner image on a sheet, said fixing device including a first fixing member contactable with a front surface of the sheet, and a second fixing member provided with an electroconductive surface layer contactable with a back surface of the sheet; a feeder provided downstream of said fixing device with respect to a sheet feeding direction to nip and feed the sheet, a feeder including a first feeding roller contactable with the front surface, and a second feeding roller provided with an electroconductive surface layer contactable with the back surface; a first discharging member contacted with said electroconductive surface layer of said second fixing member to discharge said second fixing member; and a second discharging member contacted with said electroconductive surface layer of said second feeding roller to discharge said second feeding roller. | 10-01-2015 |