Patent application number | Description | Published |
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 |
20100112404 | FUEL CELL SYSTEM - An object of the present invention is to provide a fuel cell system capable of raising the temperature of a discharge valve and restraining the discharge valve from freezing by a simple structure. The fuel cell system has a circulation system for circulating hydrogen off gas, which is discharged from a fuel cell, to the fuel cell, an exhaust/drain valve for discharging a fluid passing through the circulation system to the outside, and a refrigerant flow path through which a refrigerant, which is circulated to the fuel cell, flows. The exhaust/drain valve has a valve body provided with a flow path which interconnects the interior of the circulation system and the outside. A part of the refrigerant flow path is provided by penetrating the valve body so as to be independent of the flow path. | 05-06-2010 |
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 |
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 |
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 |
20100294022 | PRESSURE SENSOR - A pressure sensor is arranged on a supply/discharge pipe of a reactive gas to be supplied to or discharged from a fuel cell, and measures the pressure of the reactive gas in the pipe. The pressure sensor is provided with an engaging section which has a screw and engages with a pipe wall of the pipe; a pressure detecting section, which faces a reactive gas channel of the pipe and detects the pressure inside the pipe by displacement; a displacement sensor, which is arranged in the pressure detecting sensor and measures displacement of the pressure detecting section; and a buffer section, which connects the engaging section with the pressure detecting section by sandwiching a buffer layer which communicates with the reactive gas channel of the pipe, and eliminates abnormal displacement of the pressure detecting section by deforming to a stress generated by torque of the screw, at the time when the pressure sensor is engaged with the pipe. | 11-25-2010 |