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Chemistry: Electrical Current Producing Apparatus, Product, And Process > Fuel Cell, Subcombination Thereof Or Methods Of Operating > Automatic Control Means > Pressure Dependent Pressure DependentPressure Dependent patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.05/17/07 - 20070111062 - Fuel cell device capable of outputting a signal representing a residual capacity, method for outputting a signal representing a residual capacity of a fuel cell device, and electronic device capable of detecting a residual capacity of a fuel cell This invention provides a fuel cell device which is simple in structure and easy to detect a fuel residual amount and includes a fuel tank accommodating a plurality of hydrogen storage alloys having mutually different hydrogen desorbing characteristics, a power generating section that uses the hydrogen desorbed from the fuel ... 04/26/07 - 20070092774 - Fuel cell system having no fuel pump A fuel cell system having no fuel pump, including: an electric generator to generate electricity by electrochemical reaction between hydrogen-containing fuel and an oxidant; and a fuel feeder including a fuel tank in which the hydrogen-containing fuel to be supplied to the electric generator is stored, wherein the fuel feeder ... 04/05/07 - 20070077472 - Fuel cell system and method of discharging gas from the fuel cell system A fuel cell system includes: a fuel cell to which a reaction gas is supplied to generate electricity; a circulating system which returns unreacted reaction gas discharged from the fuel cell to an upstream of the fuel cell to thereby circulate the unreacted reaction gas; a discharge device which discharges ... 04/05/07 - 20070077471 - Fuel cell system A fuel cell system includes a fuel cell stack; a diluted fuel tank for storing diluted fuel; a diluted fuel conduit for supplying the diluted fuel from the fuel dilution tank to the fuel cell stack; a differential pressure sensor in the diluted fuel conduit to sense a differential pressure ... 04/05/07 - 20070077470 - Fuel cartridge for fuel cells A fuel cartridge with a deformable inner fuel container connectable to a fuel cell is disclosed. The pressure in the inner fuel container is controlled. ... 03/08/07 - 20070054167 - Fuel cell system and method of operating a fuel cell system A fuel cell system includes a control device for setting an oxygen-containing gas operating pressure target value on the cathode side using a relative pressure relative to atmospheric pressure, setting a fuel gas operating pressure target value on the anode side using an absolute pressure, and controlling a power generation ... 03/01/07 - 20070048571 - Fuel cell system The present invention is to offer a fuel cell system that efficiently removes the moisture contained in the anode offgas with the aid of a gas-liquid separator, which is installed in the circulation line of fuel gas, by sensing the pressure of the anode offgas led into the gas-liquid separator ... 02/08/07 - 20070031711 - Fuel-cell system and method for scavenging fuel cell A fuel-cell system 1 includes: a fuel cell 13 configured to generate electricity through reaction between hydrogen gas and air; a compressor 12 configured to supply air as a scavenging gas to a reactant gas path 13a of the fuel cell 13; a control part 18 configured to control an ... 02/08/07 - 20070031710 - Fuel cell system A fuel cell system in which fuel cell flooding is eliminated by providing necessary flow speed of fuel gas within a channel while improving system efficiency of the fuel cell by re-circulating unreacted fuel gas, which has been discharged externally from a circulation channel in order to provide the flow ... 02/01/07 - 20070026280 - Fuel cell system and method of controlling gas pressure in fuel cell system A controllable range of an air flow rate and an air pressure in a fuel cell system is calculated from air flow rates and air pressures when the air back pressure valve is fully open and fully closed. A target generation current is calculated from an accelerator position or an ... 07/27/06 - 20060166060 - Fuel cell system and gas leak detection method When a command for stopping electric generation by a fuel cell is issued, shutoff valves are closed (at time t1), and then a time-dependent change in pressure (P) in a closed passage area including the fuel cell is detected. A pressure change speed (dP1, i.e., an inclination of L1) when ... 07/27/06 - 20060166059 - Arrangement and method for continuously supplying electric power to a field device in a technical system An arrangement is described for supplying electrical power to a field device in a process installation which is equipped with a wire-free communication interface without the use of wires. At least one fuel cell having a membrane/electrode block and a fuel tank as well as an electrical energy store are ... 07/20/06 - 20060159970 - Flux control apparatus and fuel cell system A flux control apparatus includes an outlet pressure detector for detecting an outlet pressure of a fluid at an outlet of a fluid flow apparatus driven by a drive source for feeding the fluid from an inlet of the fluid flow apparatus and letting the fluid flow out from the ... 06/15/06 - 20060127722 - Regulator for fuel cell A regulator for use with fuel cells, which is mounted in a pressure controller of a fuel cell system, has a first diaphragm flexible under the pressure of pilot air supplied as an oxidizing agent to a pilot chamber, a second diaphragm flexible under the pressure of a hydrogen-containing gas ... 06/08/06 - 20060121326 - Fuel cell system and control method thereof A fuel cell system with a fuel cell (FC stack) has an off gas circulation path to the fuel cell, an off gas exhaust unit, and an off gas pressure sensor. The system measures physical properties such as a pressure and temperatures of the off gas at various timings before ... 06/01/06 - 20060115700 - Fuel cell system and method of detecting failure in a fuel gas channel of fuel cell system When an ignition switch is turned off, a hydrogen supply valve is closed. Operation of a compressor continues, and an air supply valve and an air discharge valve are opened to supply the compressed air into a fuel cell through a hydrogen supply port. The scavenging process of removing the ... 05/25/06 - 20060110640 - Operation control of fuel cell system In a fuel cell system of the invention, a pressure regulator is provided in the pathway of a hydrogen supply conduit that connects a hydrogen tank to a fuel cell stack. An anode off gas discharged from the fuel cell stack is recirculated through a recirculation pipe into the hydrogen ... 05/18/06 - 20060105212 - Fuel cell system A fuel cell system including: at least one electricity generator for generating electric energy through a reaction between fuel and oxygen and for discharging the remaining fuel; a fuel supply unit for supplying a predetermined amount of fuel to the electricity generator; an oxygen supply unit for supplying oxygen to ... 05/18/06 - 20060105211 - Fuel cell system Membrane degradation in PEM fuel cells can be explained as follows. Hydrogen peroxide (H2O2) formed around cathodes and anodes catalytically reacts with Fenton's reagents to produce radicals. Such radicals attack the membrane and initiate oxidative decomposition. Only trace quantities of Fenton's reagent are necessary to lead to the production of ... 05/11/06 - 20060099470 - Passive restriction pathways in fuel cell water drainage A passive restriction passageway (for example, a passive capillary valve or a restricting orifice) positioned to drain accumulated liquid from a fuel cell reactant flow channel is used in conjunction with a control element for periodically adjusting the pressure across the passageway. The control element intermittently adjusts pressure across the ... 03/09/06 - 20060051636 - Fuel cell system A fuel cell system, includes: 1) a fuel cell including: i) a fuel electrode to which a fuel gas is supplied, and ii) an oxidant electrode to which an oxidant gas reacting with the fuel gas for a generating operation is supplied; and 2) a fuel gas supplier supplying the ... 03/09/06 - 20060051635 - Fuel cell system and control method thereof A control unit calculates an integration value resulting from integration of the amount of an impurity other than a fuel gas at a hydrogen electrode, which varies in accordance with a gas pressure at the hydrogen electrode and the temperature of a fuel cell stack, when a hydrogen purge valve ... 02/09/06 - 20060029848 - Method and system for controlling fluid delivery in a fuel cell The invention relates to micro fuel cell systems whose performance is enhanced by an accurate fluid delivery system. The fluid delivery system improves reactant fluid provision to meet electrical output, while maintaining correct stoichiometries for chemical processing in a downstream reactor. The fluid delivery system includes a pressure source and ... 01/26/06 - 20060019137 - Fuel cell system A fuel cell system has: a water supply cycle for supplying water to a fuel cell stack through piping; n numbers of pressure detection devices (n is an even number of two or greater) provided on the piping and detecting pressure of the water; and a control device for determining ... 01/12/06 - 20060008689 - Fuel cell system A system controller drives a gas circulator with a purge valve closed to supply hydrogen to a fuel cell stack and then increases anode operating pressure and cathode operating pressure to target operating pressures after a predetermined condition is satisfied. This allows an amount of gas mixture of remaining oxygen ... 01/12/06 - 20060008688 - Fuel cell An object of the present invention is to provide a fuel cell having a structure capable of generating a large cell output power. According to the present invention, there is provided a fuel cell including an anode for oxidizing liquid fuel, a cathode for reducing oxygen, an electrolyte membrane provided ... 12/01/05 - 20050266285 - Utilization-based fuel cell monitoring and control Fuel cell systems and methods for controlling the operation of components of the fuel cell system, which may include a fuel source and a fuel cell stack. In some examples, a fuel source is adapted to provide supply fuel to a fuel cell stack at a supply pressure. The fuel ... 12/01/05 - 20050266284 - Consumption-based fuel cell monitoring and control Fuel cell systems and methods for controlling the operation of components of the fuel cell system, such as which may include a fuel source and a fuel cell stack. In some examples, a fuel source is adapted to provide supply fuel to a fuel cell stack at a supply pressure. ... 10/27/05 - 20050238935 - Fuel cell system and activation system thereof A fuel cell system is equipped with a fuel cell for generating power by an electrochemical reaction of a fuel gas and an oxidizer gas, a fuel gas supply mechanism for supplying the fuel gas to the fuel cell, a supply amount adjustment mechanism for adjusting a supply amount of ... 08/25/05 - 20050186458 - Electrolyzer cell stack system Some embodiments of the present invention provide a balance-of-plant system and apparatus suited for regulating the operation of an electrolyzer cell stack. Specifically, in some embodiments, a balance-of-plant system and apparatus is operable to regulate the respective pressures of at least two reaction products relative to one another. Various examples ... 08/11/05 - 20050175872 - Fuel cell flooding detection A pressure fluctuation parameter (for example, a statistical indicator such as a root-mean-square value) from a set of differential pressure measurements between the inlet and the outlet of a fuel cell reactant flow channel carrying vaporized water is used to define flooding onset. Vaporized water in the flow of gas ... 07/28/05 - 20050164058 - Fuel cell system A fuel cell system comprising a fuel tank, a stack generating electrical energy using fuel and an oxidizer supplied thereto, and a pressure reducing unit supplying the fuel from a fuel tank to the stack while maintaining the pressure of the stack lower than the atmospheric pressure is provided. ... 07/28/05 - 20050164057 - Virtual compressor operational parameter measurement and surge detection in a fuel cell system A fuel cell system that employs surge prevention by electronically mapping the compressor for discharge pressure versus mass airflow. In one embodiment, the fuel cell system employs a mass flow meter that measures the airflow to the compressor. A controller receives a signal from the mass flow meter indicative of ... 06/30/05 - 20050142408 - Direct antifreeze cooled fuel cell power plant with passive water management The plant (60) includes at least one fuel cell (10, 62) having a wetproofed anode support (20) and a cathode support (24) for directing reactant streams adjacent catalysts (14, 16). A porous anode cooler plate (26) has its fuel channels (28A, 28B, 28C, 28D) secured adjacent the anode support (20). ... 06/16/05 - 20050130003 - Cooling system for a fuel cell stack A fuel cell cooling system is provided with a coolant pump for pumping fluid through coolant flow field passages in a fuel cell stack. A pressure control mechanism is provided for maintaining a pressure level within the fuel cell stack for causing a phase change of the coolant within the ... 06/16/05 - 20050130002 - Fuel cell system A fuel cell system having a fuel cell consuming the hydrogen stored in the high-pressure hydrogen tank as fuel gas, a hydrogen supply line connecting the high-pressure hydrogen tank to the fuel cell, a primary decompressing means provided on the hydrogen supply line, a secondary decompressing means provided in the ... ### FreshPatents.com Support |