Patent application number | Description | Published |
20090070981 | COMPONENT MOUNTING STRUCTURES - The present invention includes a mounting structure for mounting a component between a first member and a second member. According to the mounting structure, the component is first placed on a surface of the first member. Then, the second member is fitted with the component by a fitting device, so that the component is positioned relative to the second member. Thereafter, the component is fixed in position relative to the first member by a joint device. | 03-19-2009 |
20100040922 | FUEL CELL SYSTEM - A fuel cell system having a fuel cell, a reactant gas pipe for supplying a reactant gas to the fuel cell, and an injector for driving a valve body at a predetermined drive cycle by an electromagnetic driving force to separate the valve body from a valve seat, regulating conditions of the gas on the upstream side in the reactant gas pipe and supplying the gas to the downstream side. A gas element component responding to the physical quantity of the reactant gas circulating through the reactant gas pipe is integrally provided in the injector so as to come close to the injector. | 02-18-2010 |
20100062319 | FUEL CELL SYSTEM AND FUEL CELL HYBRID VEHICLE - A fuel cell system having a hydrogen supply path for supplying a hydrogen gas to a fuel cell, an injector which is provided in the hydrogen supply path and which regulates the pressure of the gas on the upstream side of the hydrogen supply path to inject the pressure-regulated hydrogen gas to the downstream side of the hydrogen supply path, and a surge tank | 03-11-2010 |
20100068578 | FUEL CELL SYSTEM - A fuel cell system having a cooling water pump provided in cooling water piping that sends cooling water to a fuel cell and sending the cooling water under pressure, fuel gas supply piping connected to the fuel cell and supplying fuel gas to the fuel cell, fuel gas circulation piping connected to both the fuel cell and the fuel gas supply piping and circulating fuel gas, discharged from the fuel cell, in the fuel gas supply piping, and a fuel gas pump provided in the fuel gas circulation piping and sending under pressure the fuel gas, discharged from the fuel cell, to the fuel gas supply piping. After operation of the fuel cell is stopped, the fuel gas, discharged from the fuel cell, is sent under pressure by the fuel gas pump, and cooling water is send under pressure by the cooling water pump to cool the fuel cell to thereby reduce the temperature of the fuel cell to a level lower than the temperature of the fuel gas pump. | 03-18-2010 |
20100183939 | FUEL CELL SYSTEM - A fuel cell system including a fuel cell stack having stacked cells for generating electricity by an electrochemical reaction between a fuel gas and an oxidizing gas and held between a pair of end plates arranged at both ends in the stacking direction of the cells, and also including a gas-liquid separator for separating a gas and a liquid of an off-gas discharged from the fuel cell stack, wherein the gas-liquid separator is fixed to the end plate. Exhaust heat of the fuel cell stack is effectively used to heat the gas-liquid separator. | 07-22-2010 |
20100209797 | FUEL CELL SYSTEM - A fuel cell system comprises a fuel cell, a reactant gas pipe for supplying a reactant gas to the fuel cell, and an injector for controlling the state of the gas on the upstream side in the reactant gas pipe and supplying the reactant gas to the downstream side by driving a valve element with an electromagnetic drive force at a predetermined drive cycle to separate the valve element from a valve seat. The injector is provided integrally in the fuel cell, and hence the vibration and noise of the injector can be absorbed and suppressed by the fuel cell as a heavy article. | 08-19-2010 |
20100233561 | FUEL CELL SYSTEM - A fuel cell system includes a cell stack body formed by stacking fuel cells on top of each other, end plates arranged at ends in the cell stacking direction of the cell stack body, and a fluid regulation device mounted in a flow path connected to the cell stack body and regulating conditions of fluid flowing in the flow path. The fluid regulation device is fixed to an end plate only at either of a fluid entrance portion and a fluid exit portion of the fluid regulation device. | 09-16-2010 |
20100233563 | FUEL CELL SYSTEM - The present application provides a technique prevents a regulator arranged on a gas supplying path that supplies gas to a fuel cell installed in a fuel cell system from functioning erroneously, by controlling the pressure increase within the upper stream side of the regulator. The fuel cell system includes a fuel cell, an oxide gas supplying path to supply oxide gas to the fuel cell, a fuel gas supplying path to supply fuel gas to the fuel cell, a secondary regulator arranged on the fuel supplying path, a bypass path communicating the upper stream side path of the secondary regulator with the lower stream side path of the secondary regulator, and a pressure controlling valve that is closed in a case where the pressure difference between the upper stream side path and the lower stream side path is less than a predetermined amount, and opened in a case where the pressure difference between the upper stream side path and the lower stream side path exceeds the predetermined amount. | 09-16-2010 |
20100233581 | FUEL CELL SYSTEM AND METHOD OF DIAGNOSING ON-OFF VALVE - A fuel cell system having a fuel cell, a fuel supply flow path for allowing a fuel gas supplied from a fuel supply source to flow to the fuel cell, an on-off valve for regulating the state of the gas on the upstream side of the fuel supply flow path to supply it to the downstream side, failure detection means for detecting whether the on-off valve has a closure failure, a pressure sensor for detecting the pressure value of the fuel gas on the upstream side of the on-off valve, and determination condition setting means for setting, based on the pressure value detected by the pressure sensor, the conditions of determination of the closure failure of the on-off valve. The failure detection means determines whether the on-off valve has the closure failure, based on the closure failure determination conditions set by the determination condition setting means. | 09-16-2010 |
20100239935 | FUEL CELL SYSTEM AND FUEL CELL VEHICLE - A fuel cell system according to the present invention includes a fuel cell; a fuel supply system for supplying a fuel gas to the fuel cell; an injector which drives a valve body with an electromagnetic driving force in a predetermined driving period to detach the valve body from a valve seat, whereby a gas state on the upstream side of the fuel supply system is adjusted to jet the gas to a downstream side; and a control device which controls the operation of the injector. The control device allows the injector to jet the gas with a jet flow rate of a predetermined jet flow rate or less in a case where the demanded amount of a power to be generated with respect to the fuel cell is the predetermined amount of the power to be generated or less, and the control device sets the driving frequency of the injector in accordance with the jet flow rate and the demanded amount of the power to be generated. | 09-23-2010 |
20100261093 | FUEL CELL SYSTEM - A fuel cell system which can encase a dilution device while keeping the height of a fuel cell case as low as possible by utilizing the lower space in the case effectively. A fuel cell system comprises a fuel cell stack generating power through an electrochemical reaction between a gas supplied to the anode side and a gas supplied to a cathode side, a dilution device for diluting an anode off gas discharged from the fuel cell stack with a cathode off gas and discharging the diluted gas, and a fuel cell case for encasing the fuel cell stack and the dilution device. In this fuel cell system, a lateral opening of the fuel cell case for passing an exhaust pipe extending to the exhaust downstream of the dilution device is arranged above the lowermost portion of the inner surface of the dilution device with respect to the gravitational direction. | 10-14-2010 |
20100278665 | FIXATION STRUCTURE FOR COMPRESSOR - Provided is a compressor fixation structure that can reduce the occurrence of condensation. In a fixation structure for a compressor that has an electric motor and a compression mechanism provided adjacently to the electric motor and driven by the electric motor, when forming a motor housing for the electric motor and a compression mechanism housing for the compression mechanism separately from each other, a fixation part to be fixed to an object to which the compressor is to be attached is provided in the compression mechanism housing. Consequently, the compression mechanism housing is integrated with the object, and the heat capacity of the compression mechanism including the compression mechanism housing can be assumed to be a larger capacity which includes the heat capacity of the object. | 11-04-2010 |
20100279193 | FUEL CELL SYSTEM AND METHOD FOR OPERATING THE SYSTEM - The present invention is a fuel cell system including a fuel cell, an injector which is provided in a hydrogen supply channel of the fuel cell and which adjusts a gas state of an upstream side of the hydrogen supply channel to supply a gas toward a downstream side, and a control device which drives and controls the injector. The control device controls an operation of the injector based on a driving state of an associated device including the fuel cell system | 11-04-2010 |
20110070527 | FUEL CELL SYSTEM - Provided is fuel cell system capable of eliminating any failure caused by freezing of a discharge valve during a low temperature while preventing an increase in size of the system. A fuel cell system is provided, the system including: a fuel cell; a diluter that dilutes a fuel-off gas discharged from the fuel cell with an oxidant-off gas discharged from the fuel cell to discharge the resulting gas to the outside; a fuel-off gas flow path that connects the fuel cell and the diluter; and a discharge valve that is provided to the fuel-off gas flow path to discharge a fuel-off gas flowing through the fuel-off gas flow path to the outside during a valve opening operation. In the fuel cell system, the discharge valve is integrally attached to the diluter. | 03-24-2011 |
20110076584 | FUEL CELL SYSTEM - Provided is a fuel cell system capable of ensuring responsiveness during acceleration even when a motor with a smaller torque as compared to the related art is used. A control apparatus reduces the revolution speeds of motors of an air compressor, a circulation pump and a cooling pump by a coasting operation, without performing a regenerative control, when a load required from a fuel cell (electrical power required by various motors and auxiliary apparatuses) is being reduced and a travel speed is equal to or higher than a set speed. With such a configuration, even when a driver later reaccelerates a vehicle by, for example, pressing down an accelerator, required acceleration force is smaller as compared to the related art, and thus a motor with a small torque can be employed. | 03-31-2011 |
20110079455 | VEHICLE-INSTALLATION STRUCTURE FOR FUEL CELL - Provided is a vehicle-installation structure for a fuel cell with the capability of reducing a pressure drop in a gas flow path in the fuel cell. A vehicle-installation structure for a fuel cell in which: a fuel cell stack with an end of cells in a stacking direction being supported by an end plate is installed in a vehicle so that the stacking direction of the cells extends along a right-left direction of the vehicle; and an off gas of an oxidant gas from the fuel cell stack is exhausted via a diluter from a rear side with respect to the fuel cell stack in a front-rear direction of the vehicle, wherein a junction between a plurality of exhaust manifolds for guiding the off gas of the oxidant gas discharged from the fuel cell stack is arranged on a front side in the end plate in the front-rear direction of the vehicle. | 04-07-2011 |
20110117467 | FUEL CELL SYSTEM - A first detection line is set in a lower temperature range than a limit line representing an upper limit temperature of a motor allowed by an inverter and represents a reference motor temperature at a required output for fuel cells as a temperature criterion where a controller changes over the means for achieving the sufficient hydrogen stoichiometric ratio from recycling hydrogen with a circulation pump to increasing the hydrogen concentration. When the motor temperature reaches or exceeds the first detection line at the required output for the fuel cells, the controller prevents an increase in rotation speed of the motor and regulates the openings of a shutoff valve and a regulator to increase the concentration of hydrogen supplied from a hydrogen tank to the fuel cells and thereby increase the hydrogen supply pressure. This arrangement effectively prevents an increase of the motor temperature, while achieving the sufficient hydrogen stoichiometric ratio. | 05-19-2011 |
20110143248 | FUEL CELL - A fuel cell comprises: multiple unit cells stacked upright in a vertical direction or stacked in a vertically inclined orientation; an insulating plate arranged on a vertically upper-side end of the stacked multiple unit cells; a cooling medium supply manifold arranged to distribute a supply flow of a cooling medium into the multiple unit cells and a cooling medium discharge manifold arranged to join together discharged flows of the cooling medium from the multiple unit cells; and a de-airing passage formed to release a gas accumulated in either the cooling medium supply manifold or the cooling medium discharge manifold, wherein the cooling medium supply discharge manifold and the cooling medium discharge manifold are respectively connected to a cooling medium supply piping and a cooling medium discharge piping on a vertically lower-side end of the fuel cell, and the de-airing passage is formed such that a portion of the de-airing passage is made in the insulating plate wherein the portion of the de-airing passage extends in a direction perpendicular to a stacking direction of the unit cells, and the de-airing passage is connected to either the cooling medium discharge manifold or the cooling medium supply manifold on a vertically upper end side of the cooling medium discharge manifold or the cooling medium supply manifold. | 06-16-2011 |
20120006606 | FUEL CELL STACK MOUNTING STRUCTURE AND FUEL CELL STACK MOUNTING METHOD - The fuel cell stack is placed in an attitude for which the stacking direction of the plurality of cells are tilted in relation to the front-back direction of the vehicle, and the second end plate is positioned at forward and upper position relative to the first end plate in the vehicle. The radiator is provided at a forward position relative to the second end plate, and along the second end plate. The first compressor is fixed at a total of three or more points to both the first and second end plates below the fuel cell stack. | 01-12-2012 |
20120070757 | FUEL CELL VEHICLE - The pressure-adjusting valve provided in the cathode outlet of a fuel cell stack constituting a fuel cell system has a function of adjusting the oxidizing gas pressure in the fuel cell stack according to the adjustment of the valve opening degree. When the exhaust pipe is flooded with water, the pressure inside the exhaust pipe varies from the atmospheric pressure and the opening degree of the pressure-adjusting valve changes. The flooding estimation signal output processing unit of the control unit outputs a flooding estimation signal indicating that the exhaust pipe is flooded when an opening degree difference that is a difference between the opening degree of the pressure-adjusting valve and a preset opening degree corresponding to the operation directed pressure is equal to or greater than a preset threshold opening degree difference. The processing of inhibiting the flowing is performed based on this signal. | 03-22-2012 |
20120077104 | FLUID COMPRESSOR AND FUEL CELL VEHICLE - An air compressor as a fluid compressor includes: a suction port and a delivery port provided at upper and lower portions, respectively, of a pump chamber; a suction passage in communication with the inside of the pump chamber via the suction port; a delivery passage in communication with the inside of the pump chamber via the delivery port ( | 03-29-2012 |
20120080253 | FUEL-CELL-POWERED VEHICLE - A fuel-cell-powered vehicle includes a fuel cell, an air compressor that is mounted in an engine compartment of the vehicle and supplies air to the fuel cell, side members that are located on each lateral side of the engine compartment and fixed to a vehicle body, and a cross member that is laid so as to extend between the side members and supports the air compressor. | 04-05-2012 |
20120095637 | FUEL CELL SYSTEM - A fuel cell system includes a converter for boosting the output voltage of a fuel cell stack and supplies the boosted voltage to a first inverter for a drive motor and a second inverter for an air compressor motor, voltage acquisition means, and converter control means. The voltage acquisition means acquires a required voltage of the air compressor motor according to a target air compressor motor torque based on acceleration demand of the air compressor motor. The converter control means sets the voltage boost ratio of the converter and controls the converter by comparing the required voltage of the air compressor motor and a required voltage of the drive motor. | 04-19-2012 |
20120279792 | FUEL CELL MOUNTING STRUCTURE - A structure for mounting a fuel cell on an object is provided. This structure is equipped with a fuel cell stack, a motor, and a drive shaft. The fuel cell stack has first and second end plates and at both ends. The motor is driven by the power generated by the fuel cell stack and is fixed to the fuel cell stack. The drive shaft is connected to the output shaft of the motor and extends to both sides of the motor. The fuel cell stack is equipped with a support portion for supporting the drive shaft at the first end plate. The drive shaft is supported by the support portion and the motor. | 11-08-2012 |
20120308908 | FUEL CELL SYSTEM - A fuel cell system includes an air supply flow path configured to supply the air to a fuel cell, a reed valve provided in the air supply flow path, an air exhaust flow path configured to allow the air discharged from the fuel cell to flow therethrough, a pressure regulating valve provided in the air exhaust flow path and configured to adjust back pressure of the air supplied to the fuel cell, a bypass flow path configured to connect an upstream section of the air supply flow path upstream of the reed valve with the air exhaust flow path, and a bypass valve provided in the bypass flow path and configured to open and close the bypass flow path. The fuel cell system reduces the opening of the pressure regulating valve with supplying the air to the fuel cell in the closed position of the bypass valve, so as to increase the pressure of the air upstream of the pressure regulating valve, and subsequently opens the bypass valve. | 12-06-2012 |
20130040218 | GAS SUPPLY DEVICE - A gas supply device for use in a fuel cell system, comprises: a first injector configured to have a first maximum valve-openable pressure; a second injector arranged in parallel with the first injector and configured to have a lower flow rate than the first injector and a greater second maximum valve-openable pressure than the first maximum valve-openable pressure; a first pressure sensor located upstream of the first and second injectors; and a controller configured to control open/close operation of the first and second injectors, wherein at a start of the fuel cell system, (i) when pressure in the upstream of the first and second injectors is greater than the first maximum valve-openable pressure but is less than or equal to the second maximum valve-openable pressure, the controller opens the second injector, and (ii) when the pressure in the upstream of the first and second injectors is less than or equal to the first maximum valve-openable pressure, the controller opens the first injector or the second injector. | 02-14-2013 |
20130045398 | FUEL CELL VEHICLE - A fuel cell vehicle includes under a floor of the vehicle: a fuel cell generating electric power through an electrochemical reaction between reaction gases; a fluid supply/discharge unit for the fuel cell; and a converter converting electric power from the fuel cell, the converter being contained in a center tunnel provided, at a center in a vehicle width direction, so as to be curved toward a cabin along a vehicle axis in a front-back direction, the fuel cell and the unit being arranged on a rear side of the vehicle relative to the converter and arranged in the vehicle width direction, wherein the converter is provided to be offset toward the fuel cell with respect to a centerline of the center tunnel along the vehicle axis and to be offset toward the unit with respect to a centerline of the fuel cell along the vehicle axis. | 02-21-2013 |
20130059221 | FUEL CELL SYSTEM AND HEATING METHOD BY USING HEAT FROM FUEL CELL - A fuel cell system includes: a fuel cell configured to have a cell stack obtained by stacking a plurality of cells; a heat exchanger located in a middle position in a stacking direction of the cell stack and configured to have a flow channel that allows passage of a fluid for heat exchange; and a heating system configured to use the fluid that passes through the flow channel for heating. | 03-07-2013 |
20130071767 | FUEL CELL SYSTEM - A fuel cell system equipped with a fuel cell, a pressure control unit, and an exhaust. The pressure control unit is provided on the fuel gas flow path in which the fuel gas to be supplied to the fuel cell flows, and it is able to control the pressure of the fuel gas to be supplied to the fuel cell. The exhaust valve is provided on the fuel exhaust gas flow path in which the fuel exhaust gas exhausted from the fuel cell flows, and when the valve is opened, at least a portion of the fuel exhaust gas can be exhausted to outside the fuel exhaust gas flow path. The pressure control unit is controlled, so that before opening the exhaust valve, the pressure of the fuel gas to be supplied to the fuel cell is decreased beyond what it was up to that point. Then, when the pressure of the fuel gas to be supplied to the fuel cell is the decreased first pressure, the exhaust valve is opened. | 03-21-2013 |
20130202979 | PIPING UNIT FOR FUEL CELL, FUEL CELL UNIT EQUIPPED WITH PIPING UNIT AND FUEL CELL SYSTEM - A piping unit includes a cathode gas supply passage arranged to supply a cathode gas, and a cathode gas discharge passage arranged to discharge a cathode off-gas. The cathode gas supply passage includes a cathode supply valve, upstream cathode gas piping and downstream cathode gas piping. The cathode gas discharge passage includes a cathode exhaust valve, upstream cathode off-gas piping and downstream cathode off-gas piping. The cathode gas supply passage and the cathode gas discharge passage are connected with each other by cathode bypass piping and are integrated with each other by joining the cathode supply valve with the upstream cathode off-gas piping. | 08-08-2013 |
20130306387 | FUEL CELL VEHICLE - This fuel cell vehicle comprises a DC-DC converter constituted of a power input portion, reactors, and switching circuit sections. Connecting portions of the power input portion to the reactors and connecting portions of the reactors to the switching circuit sections in the DC-DC converter are all arranged side by side along a forward-backward direction of the vehicle, and arranged in this state on the side of one side surface of the DC-DC converter on one of the right side and left side of the vehicle. | 11-21-2013 |
20140113161 | FUEL CELL VEHICLE - A fuel cell vehicle ( | 04-24-2014 |
20140308589 | FLUID COMPRESSOR AND FUEL CELL VEHICLE - An air compressor as a fluid compressor includes: a suction port and a delivery port provided at upper and lower portions, respectively, of a pump chamber; a suction passage in communication with the inside of the pump chamber via the suction port; a delivery passage in communication with the inside of the pump chamber via the delivery port; and a driving rotor and a driven rotor provided in the pump chamber. At least a part of the suction passage is located below the suction port. | 10-16-2014 |
20150061804 | REACTOR UNIT - A reactor unit comprises a reactor and a base to which the reactor is attached. The base has base-side bonding surfaces to be bonded to a bonding surface of the reactor. A base connector, which does not include the base-side bonding surfaces, is configured to have a thickness smaller than those of first and second bases, which include the base-side bonding surfaces. | 03-05-2015 |