Abstract: A fuel supply system is configured to reduce the pressure of hydrogen gas delivered from a hydrogen cylinder by a high-pressure regulator arranged in series, regulate a flow rate of the pressure-reduced hydrogen gas by a hydrogen flow regulating device, and supply the hydrogen gas to a fuel cell. The high-pressure regulator includes a middle passage in which the hydrogen gas after being pressure-reduced by a first regulator and before being pressure-reduced by a second regulator enters, a rear passage in which the hydrogen gas after pressure-reduced by the second regulator enters, a communication passage allowing communication between the middle passage and the rear passage, and an internal air check valve provided in the communication passage and arranged to allow the hydrogen gas to flow in a direction from the middle passage toward the rear passage and block the hydrogen gas from flowing in a reverse direction thereto.

Abstract: Deterioration of an electrolyte and a sealing member is suppressed taking account of the durable temperature characteristics thereof, while enhancing the starting performance of a fuel cell. For this realization, in a system comprising a gas piping system for supplying a reactant gas to a fuel cell, and a gas supply controller for altering the supply state of the reactant gas in response to a power generation request, a gas supply quantity is altered in accordance with the temperature of the fuel cell. Preferably, the gas supply quantity is altered in accordance with the durable temperature characteristics of a passage member forming a gas passage of the reactant gas. Furthermore, the differential pressure of the gas supply state between the anode side and the cathode side of the fuel cell is preferably taken into account and the differential pressure between both poles is suppressed by altering the gas supply quantity on the cathode side as the case may be.

Abstract: 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.

Abstract: 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.

Abstract: The present invention provides a fuel cell system including a fuel cell, a hydrogen gas pipe system for supplying a fuel gas to the fuel cell, and an injector for adjusting a pressure of the upstream side of the hydrogen gas pipe system to supply the hydrogen gas to the downstream side, wherein the injector includes an internal channel for communicating the upstream side of the injector with the downstream side of the injector, and a valve body movably arranged in the internal channel for switching a channel opening area in multiple stages corresponding to a movement position of the valve body, and wherein water at least around the valve body of the injector is reduced when the system stops.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 1.

Abstract: 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 1.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Deterioration of an electrolyte and a sealing member is suppressed taking account of the durable temperature characteristics thereof, while enhancing the starting performance of a fuel cell. For this realization, in a system comprising a gas piping system for supplying a reactant gas to a fuel cell, and a gas supply controller for altering the supply state of the reactant gas in response to a power generation request, a gas supply quantity is altered in accordance with the temperature of the fuel cell. Preferably, the gas supply quantity is altered in accordance with the durable temperature characteristics of a passage member forming a gas passage of the reactant gas. Furthermore, the differential pressure of the gas supply state between the anode side and the cathode side of the fuel cell is preferably taken into account and the differential pressure between both poles is suppressed by altering the gas supply quantity on the cathode side as the case may be.

Abstract: The present invention provides a fuel cell system including a fuel cell, a hydrogen gas pipe system for supplying a fuel gas to the fuel cell, and an injector for adjusting a pressure of the upstream side of the hydrogen gas pipe system to supply the hydrogen gas to the downstream side, wherein the injector includes an internal channel for communicating the upstream side of the injector with the downstream side of the injector, and a valve body movably arranged in the internal channel for switching a channel opening area in multiple stages corresponding to a movement position of the valve body, and wherein water at least around the valve body of the injector is reduced when the system stops.

Abstract: 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.

Abstract: 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 1.

Abstract: A liquid drain (2) includes a drain body (20). The drain body defines a float chamber (30) that is adapted to store a liquid. A liquid level adjusting mechanism serves to adjust the liquid level within the float chamber and includes a float (40; 240; 340; 440; 540). The float has a float body (42; 242; 342; 442; 542) that is adapted to float on the liquid surface within the float chamber. A damper (43; 46; 243; 343; 443) may inhibit or minimize a shaking phenomenon of the float body due to waving of the liquid within the float chamber.

Abstract: Gas/liquid separating devices include a separator (1) for separating a mixed gas/liquid flow (M). A liquid drain (2) communicates with the separator and defines a liquid storage chamber (30). The liquid drain serves to temporarily store a liquid separated from the mixed flow within the liquid storage chamber, so that a space that is not occupied by the liquid is ensured within the liquid storage chamber. An adjusting mechanism (52, 152) may serve to adjust the pressure within the space of the liquid storage chamber.