Abstract:
A heat-resistant filter suitable for catching particulates contained in a high-temperature engine exhaust gas and capable of being regenerated by removing by burning the particulates thus caught. An object of the present invention is to provide a heat-resistant filter capable of controlling a rise in back pressure to be low even when the exhaust gas is treated for a long period of time, capable of heating and removing by burning deposited matters using an electric heating element, and capable of withstanding corrosion under an acid atmosphere of high temperature. A filter layer (6), in which heat-resistant fibers are accumulated at random, is interposed between air-permeable partition walls (4, 5). A first air-permeable partition wall (4) disposed on the upstream side of a passing direction of a fluid to be filtered out of the both air-permeable partition walls (4, 5) is formed of a face structure consisting of nonconductive heat-resistant fibers.
Abstract:
A three-dimensional fabric for reinforcing the composite material so that said material is irregularly functional with yarn orientation angle changed locally and optionally when weaving a three-dimensional fabric by the rotor-carrier type loom for such kind of fabric; and a method of manufacturing said fabric. In said fabric, a large number of yarns (1) oriented slantwise with respect to the lengthwise direction of the fabric are folded back at the surface of the fabric and interlaced with each other continuously in the lengthwise direction, and portions (32 to 35) at which inclination angles of continuous yarns (1) are partially varied between adjacent portions of the fabric are provided on a part of the section of the fabric. This fabric is woven in such steps that, during normal weaving cycle in which all rotors in the rotor-carrier type three-dimensional fabric weaving loom are divided into two groups each containing rotors not adjacent to each other so that rotors in one group are turned in one direction by 90° or 180° and then those in the other group are turned in the counter direction by 90° or 180°, a partial normal weaving cycle in which part of rotors are stopped from turning is repeated as many times as required.
Abstract:
A first process in which a fiber reinforced base is placed in a cavity of a molding die and then resin is injected into the cavity of the molding die in a state where the molding die is opened by a sum of a distance X1 and a distance at the time of completion of molding; a second process in which the molding die is closed to a state where the molding die is opened by a sum of a distance X2 and the distance at the time of completion of molding while resin in the cavity is being drained; and a third process in which the drain of the resin from the cavity is stopped and then the molding die is closed to the distance at the time of completion of molding while a die clamping pressure is maintained at a predetermined value to cure the resin, are carried out sequentially.
Abstract:
In a pressure reducing device (290, 291. 292, 293, 294) which can reduce a fluctuating pressure of a fluid in a passage, the effect of the passage resistance that occurs when the pressure is low is reduced, and the fluid is made to flow reliably. When the pressure of the fluid flowing in the pressure reducing device (290, 291, 292, 293, 294) is higher than a predetermined release pressure, a normal pressure reducing state where the pressure of the fluid is reduced and the fluid with the reduced pressure is made to flow out of the pressure reducing device (290, 291, 292, 293. 294) is achieved. On the other hand, when the pressure of the fluid flowing in the pressure reducing device (290, 291, 292, 293, 294) is equal to or lower than the predetermined release pressure, a pressure non-reducing state where the pressure of the fluid is not reduced and the fluid with the unchanged pressure is made to flow out of the pressure reducing device (290, 291, 292, 293, 294) is achieved.
Abstract:
Means for weaving a three-dimensional multi-axial fabric by the use of rods, in which, during weaving while preventing the rods inserted along the weft direction from dropping by a dropping-preventive wall, a full length of the rod in the weft direction is positively used, effective beating-up is enabled by a simple structure, and a device for inserting weft-ward running rods is simplified. In weaving a three-dimensional multi-axial fabric (3), a plurality of weft-ward running rods (2a) are inserted by a rod-insertion device (15) along the slant direction toward a group of warp-ward running rods (1), and weft-ward running rods piercing through and beyond the group of warp-ward running rods are received by a fabric guide (24) composing a dropping-preventive wall. The fabric guide is formed into a cylinder, when viewed along the axial line of the warp-ward running rod, for embracing the fabric to be woven with a gap therebetween and for guiding the woven fabric. The weft-ward running rods are inserted through a portion outside the end of the fabric guide or a hole formed by cutting off a pard of the guide. In this way, the rod insertion device need not be disposed spaced apart from the dropping-preventive wall and thus formation of said wall with the fabric guide is possible independent of the rod insertion device, whereby the length of the weft-ward running rod is fully used.