Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of improving start performance in a low-temperature environment by effectively draining produced water in a fuel cell while suppressing increase of a fuel consumption amount. SOLUTION: This fuel cell system 1 is equipped with the fuel cell 20, a fuel gas supply source 30, an oxidation gas supply source 40, anode system passage (hydrogen supply passage 74 and the like) and a cathode system passage (air supply passage 71 and the like) for guiding the fuel gas and the oxidation gas supplied from the fuel gas supply source 30 and the oxidation gas supply source 40, respectively, to the fuel cell 20. The fuel cell system is provided with: a fuel shutoff means (a control part 50 and a hydrogen shutoff valve H100) for shutting off the supply of the fuel gas from the fuel gas supply source 30 to the fuel cell 20 through the anode system passage; and an oxidation gas introduction means (an air introduction passage 78 and an air shutoff valve H24) for guiding the oxidation gas supplied from the oxidation gas supply source 40 to the fuel cell 20 through the cathode system passage to the anode system passage. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an insulator for a fuel cell with light weight and high strength, made of glass fiber-containing FRP, and integrally fixed with a gasket to prevent the dissolution of glass fibers in produced water. SOLUTION: In the insulator 13 interposed between a current collector arranged at both ends of a cell stack and an end plate, an insulator body 13A in which an opening part 23 for passing through fluid is formed and the gasket 22 formed in the opening part 23 are installed in a flat substrate made of glass fiber-containing FRP, and the gasket 22 is constituted by integrally bonding a seal member 27 having an almost U-shaped cross section continuously extending over the back and front circumferential parts and an internal circumferential surface of the opening part 23 and covering the opening part 23 to the opening part 23 with an adhesive. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PURPOSE:To improve reversed input rigidity by holding rear wheel steering angle at 0 while front wheel steering angle is small, increasing it according to the increase of front wheel steering angle, and receiving the reversed input from the ground to the rear wheels by a non-reversible rotation transmitting mechanism in and around front wheel steering neutral position. CONSTITUTION:The steering characteristic imparting mechanism 30 of a rear wheel steering device 20 holds rear wheel steering angle at 0, when front wheel steering angle is less than a determined value, or in and around the front wheel steering neutral position. When the front wheel steering angle exceeds the determined value, the rear wheel steering device 20 is operated to increase the rear wheel steering angle according to the increase in front wheel steering angle. In and around the front wheel steering neutral position, an output shaft 51 is prohibited from rotating by a non-reversible rotation transmitting mechanism M, and receives the reversed input from the ground to steer the rear wheels. Hence, the reversed input rigidity of rear wheel can be increased.
Abstract:
PURPOSE:To prevent an unreasonable force from acting onto an operating cable, etc., by interlocking-connecting an input rotary member onto which the steering force of a front wheel steering device is transmitted and an output rotary member for steering rear wheels in interlocking with front wheels, by an assistance delay suppressing mechanism having two springs. CONSTITUTION:A rear wheel steering device 20 in a four-wheel steering device is equipped with an input rotary member 38 onto which the steering force of a front wheel steering device is transmitted through a pair of operating cables 35a, 35b, etc., and an output rotary member 39 which is interlocked with the input rotary member 38 and steers rear wheels in interlocking with the front wheels. In this case, the both rotary members 38 and 39 are interlocking- connected by an assisting delay suppressing mechanism 40. The mechanism 40 turns a steering wheel forcibly when the assistance delay is generated by a certain reason, and when the transmission torque between the both rotary members 38 and 39 exceeds a prescribed value provided by the first and second coil springs 43 and 45, each coil spring 43, 45 deflects, and the both rotary members 38 and 39 are relatively revolved.
Abstract:
PURPOSE:To enable damping force to be set exactly at a desired value by forming an orifice connect-joining the cylindrical hole of a tube-body and the outside so that its variable-aperture-passage-cross sectional area may be revesely proportionate to the square root of the rotational displacement of a rotor. CONSTITUTION:Oil inside a cylinder chamber, at a time of a car-wheel bound, flows to an oil chamber through the connecting holes 28a, 28c, of a valve main- body 10, chamber 26a, the orifices 40a-40d of an inner tube 14, inner passages 46a-46d divide-made by a rotor 30, chambers 26b, 26d and connecting holes 28b, 28d, and damping force occurs. These orifices 40a-40d, together with the projections 30a-30d of the rotor 30 whose rotational positioning is done according to a travel condition, constitutes a variable aperture, while the variable paperture-passage-cross sectional area A is formed so as to be reversely proportionate to the square root of a rotational displacement X off the standard position O of the rotor 30, and a flow quantity coefficient is retained nearly fixedly. Thus, damping force can be set exactly at a proper value according to the travel condition of a vehicle.
Abstract:
PURPOSE:To shorten the time from the time point at which a vehicle body vertically oscillates to the time point at which the vehicle body returns to its neutral vehicle height level, by decreasing the damping force of a shock absorber until the midway of return of the vehicle body to its neutral vehicle height level, and by increasing the damping force after the midway of the return. CONSTITUTION:A means M1 detects the vertical motion of a vehicle body. Further a means M2 changes the damping force of a shock absorber disposed between the vehicle body and the wheel in accordance with an instruction fro the outside. During a predetermined time during which the vertical motion of the vehicle body detected by the means M1 changes in the direction toward the neutral vehicle height level, a means M3 delivers a signal for changing the damping force into a large value, to the means M3. With this arrangement the damping force of the shock absorber is held at a small value until the midway of return oscillation in which the vehicle body is moved from the neutral vehicle height level and is then moved back to the neutral vehicle height level so that the oscillation of the vehicle body is rapidly settled. Meanwhile after the midway of the return, the damping force is increased to restrain the oscillation of the vehicle body.
Abstract:
PROBLEM TO BE SOLVED: To provide a gasket for a fuel cell stack component without requiring the gasket to be fitted to the fuel cell stack component. SOLUTION: (1) This gasket 1 for a fuel cell stack component is mounted between the fuel cell stack component 21 with reaction gas manifolds formed by piercing therein and the reaction gas manifolds 30 and 31, and formed into a shape without overlapping the fuel cell stack component 21 in the cell stacking direction. (2) The fuel cell stack component is an insulator 1. (3) The material of the gasket is fluorine rubber. (4) The gasket is a single gasket mounted to the plurality of manifolds. (5) The gasket is a single gasket mounted to a single manifold and the single gasket has a plurality of holes 2. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PURPOSE:To improve rigidity for a reverse input to a rear wheel from the ground surface while obtaining the characteristic, in which a rear wheel steering angle is held to zero degree during the time of a small front wheel steering angle thereafter increased in accordance with an increase of the front wheel steering angle, by improving the structure of a steering characteristic giving mechanism in a rear wheel steering device. CONSTITUTION:A rear wheel steering device 20, in which a steering amount of a front wheel steering device is transmitted through a pair of control cables 65a, 65b, is provided with a rear wheel servo valve 50 of rotary type and a rear wheel power cylinder (not shown). While a steering characteristic giving mechanism 30, constituted of a driven rotary member 32 connected to input and output shafts 31, 51 and an interlocking mechanism 35 interposed between both the input shaft 31 and the driven rotary member 32, is provided. Here the driven rotary member 32 of the steering characteristic giving mechanism 30 is eccentrically arranged for the input shaft 31, and a circular arc surface 33 is formed in a protrusion part 38 provided in the input shaft 31, while a protruding part 39, in which an engaging position with the circular arc surface 33 is changed in accordance with a rotary angle of the input shaft 31 in a condition that the driven rotary member 32 is placed in the neutral position, is provided in this driven rotary member 32.
Abstract:
PURPOSE:To prevent an unreasonable force from acting onto a shift transmission mechanism by interposing a buffer mechanism consisting of elastic members into a shift transmission mechanism which connects an input member onto which the steering force of a front wheel steering device is transmitted and an output member for steering rear wheels in interlocking with front wheels. CONSTITUTION:A rear wheel steering device B in a four-wheel steering device is equipped with a relay rod 31 for steering rear wheels, and the steering force of a fron wheel steering device is transmitted to the relay rod 31 through a shift transmission mechanism B1 consisting of a pair of cables 34 and 35, steering angle characteristic setting mechanism 50, control valve 80, etc. In this case, the first and second buffer mechanisms 60 and 70 are interposed midway in the shift transmission mechanism B1. The first buffer mechanism 60 is constituted by interposing a coil spring 63 between an input member 61 which is integrally turned with the output member 52 of the steering angle characteristic setting mechanism 50 and an output member 62 and by interposing a coil spring 73 between an input member 71 which is integrally turned with the output member 61 and an output member 72 joined with the input shaft 81 of the control valve 80.
Abstract:
PURPOSE:To prevent an unreasonable force from acting onto an operating cable, etc., by interlocking-connecting an input rotary member onto which the steering force of a front wheel steering device is transmitted and an output rotary member for steering rear wheels in interlocking with front wheels, by an assistance delay suppressing mechanism having a spring and a swirl cam surface. CONSTITUTION:A rear wheel steering device 20 in a four-wheel steering device is equipped with an input rotary member 38 onto which the steering force of a front wheel steering device is transmitted through a pair of operating cables 35a, 35b, etc., and an output rotary member 39 which is interlocked with the input rotary member 38 and steers rear wheels in interlocking with the front wheels. In this case, the both rotary members 35 and 39 are interlocking- connected by an assisting delay suppressing mechanism 40. The mechanism 40 turns a steering wheel forcibly when the assistance delay is generated by a certain reason, and when the transmission torque between the both rotary members 38 and 39 exceeds a prescribed value set according to the springly force of a spring 46 and the swirl angle of the swirl cam surfaces 48a and 48b the both rotary members 38 and 39 are relatively revolved.