Abstract: The object of the invention is to provide a high performance metal hydride tank apparatus, which is capable of discharging the hydrogen gas stored in the metal hydride in the tank from throughout the metal hydride efficiently and rapidly. In the process of the hydrogen gas discharge, the metal hydride contained near the inner circumferential surface of the tank absorbs the heats by the temperature raised tank and starts discharging the hydrogen gas. The discharged hydrogen gas absorbs the heat from the inner circumferential wall efficiently, flowing along the inner circumferential wall rapidly guided by the cylinder-like baffle. Further, the discharged hydrogen gas flows through the hydrogen gas flow channel, which is formed into sections by the cylinder-like baffle in the tank, and travels throughout the metal hydride, thus heating up the metal hydride rapidly and discharging the hydrogen gas efficiently from throughout the alloy.

Abstract: Hydrogen stored in a high-pressure tank 21 is supplied to an MH tank 31 to be occluded. Cooling water of a cooling system C1 for a fuel cell 10 is heated through the heat generated at this time to warm-up the fuel cell. By such a configuration, the fuel cell can be warmed up without consuming the valuable hydrogen.

Abstract: The present invention is to provide a hydrogen supply device having a simple constitution which can be made small and light. In the present invention, a hydrogen occlusion tank is provided in a duct. A heat exchange tube is provided upstream from the hydrogen occlusion tank inside the duct. A first fan leads outside air into the duct, and cooling water, which has cooled a fuel cell, is led into the heat exchange tube. A hydrogen occluding alloy is accommodated in the hydrogen occlusion tank, and hydrogen released from the hydrogen occluding alloy is supplied via hydrogen supply pipes and a flow control valve to the fuel cell. Outside air passes through the heat exchange tube and is thereby heated; the heated outside air passes around the perimeter of the hydrogen occlusion tank, thereby heating the hydrogen occlusion tank.

Abstract: A gas-supplying apparatus for a fuel cell, which generates electric power due to an electrochemical reaction between oxygen and hydrogen, during which water is produced, and which has respective gas passages within the duel cell according to the present invention comprises a gas-sucking means which supplies supply gas of the fuel cell provided on the downstream of the gas passage in a gas-flowing direction; and a pressure controller which controls the pressure of the supply gas within the fuel cell, provided on the upstream of the gas passage, whereby the water produced during the course of said electrochemical reaction is discharged. When the cell voltage is decreased, the apparatus of the present invention recovers the cell voltage by making the negative pressure large to accelerate the discharge of the produced water with minimized power consumption.

Abstract: A gas-supplying apparatus in a fuel cell comprises a compressor which sucks a supply gas to be supplied to a fuel cell from downstream of said fuel cell, and which compresses an exhaust gas, generated from said supply gas by power generation in the fuel cell, exhausted from the fuel cell, and a heat exchanger which performs heat exchange between said supply gas and said exhaust gas. The apparatus has a simple configuration and improved heat efficiency.

Abstract: An apparatus for warming-up a fuel cell has means for returning an exhaust gas which returns the exhaust gas to the supply gas depending upon the warning-up conditions of the fuel cell at the time when the supply gas is supplied into the fuel cell and it is discharged as the exhaust gas after utilizing the supply gas in the fuel cell.

Abstract: An evaporative emission control system for an internal combustion engine includes of an evaporative fuel passage extending between the fuel tank and the intake system of the engine, and a control valve arranged across the evaporative fuel passage for opening and closing the evaporative fuel passage. The opening of the control valve is controlled such that the interior of the fuel tank is under negative pressure during operation and stoppage of the engine. The opening of the control valve is set to a desired value according to operating conditions of the engine.

Abstract: According to the present invention there is provided a highly reliable position sensor capable of preventing the entry of foreign matters such as water and dust from the exterior into a receptacle chamber formed within a housing. Formed in the housing are a mounting opening to be mounted in a sealed state to a throttle body and a receptacle chamber having an opening. The receptacle chamber and the mounting opening are partitioned from each other by a partition wall. A sensor body is mounted into the receptacle chamber and the opening of the chamber is covered with a cover, then a clearance formed between the opening and the cover is filled and sealed with a thermosetting resin such as an epoxy resin. A communication hole for communication between the receptacle chamber and the mounting opening is formed through an operating shaft which is rotating a sliding-element receiver of the sensor body.

Abstract: An evaporative emission control system for an internal combustion engine includes an evaporative fuel passage extending between the intake system and the fuel tank of the engine. A control valve is arranged across the evaporative fuel passage, for opening and closing the evaporative fuel passage. The opening of the control valve is controlled such that the interior of the fuel tank is under negative pressure during operation and stoppage of the engine.

Abstract: For switching over the operation mode of at least one engine valve, a connection means or a switchover pin is disposed to connect a plurality of valve operating means or rocker arms integrally or release such connection and a detection means is disposed to detect a moved position of the connection means or switchover pin. Thereby, it is checked whether the operation mode of the engine valve is in conformance with the connected state or the connection released state of the valve operating means, and therefore an operationally locked condition of the connection means or the switchover pin is detected, for example.

Abstract: A crankcase ventilating system removes engine oil particles from a gas containing a blow-by gas and drawn from an engine crankcase, and then introduces the gas into an intake manifold. The crankcase ventilating system includes a first chamber for passing a gas from the crankcase therethrough, a valve for controlling the amount of the gas flowing therethrough, and a second chamber for passing therethrough the gas flowing from the first chamber via the valve and for allowing the gas to flow from the second chamber into the intake manifold. The second chamber is arranged to permit the gas to be expanded therein. The crankcase ventilating system can separate fuel and water from the engine oil.