摘要:
There is disclosed an exhaust gas purifying filter of the present invention comprising a honeycomb structure formed of a porous ceramic material and including: a large number of through-holes 3; plugged portions 10 formed in one end portion of each of predetermined through-holes 3 and in the other end portion of each of remaining through-holes 3; and partition walls 2 partitioning the through-holes 3 and formed into filter layers, characterized in that a plugging length is non-uniform for each plugged portion 10, and the filter has characteristics such as high porosity and thin wall while hardly causing defects such as chipping and falling-off of the plugged portions during packing, transporting, and handling.
摘要:
There is disclosed an exhaust gas purifying filter of the present invention comprising a honeycomb structure formed of a porous ceramic material and including: a large number of through-holes 3; plugged portions 10 formed in one end portion of each of predetermined through-holes 3 and in the other end portion of each of remaining through-holes 3; and partition walls 2 partitioning the through-holes 3 and formed into filter layers, characterized in that a plugging length is non-uniform for each plugged portion 10, and the filter has characteristics such as high porosity and thin wall while hardly causing defects such as chipping and falling-off of the plugged portions during packing, transporting, and handling.
摘要:
Silicon nitride sintered bodies including Si.sub.3 N.sub.4 and at least one element selected from Y.sub.2 O.sub.3, MgO, ZrO.sub.2. In the silicon nitride bodies, a J phase solid solution is present in an intergranular phase, which satisfies a relation of 0.65x.ltoreq.y.ltoreq.x+2 wherein y is an amount of J phase solid solution and x is an amount of Y.sub.2 O.sub.3 as an additive.
摘要翻译:包括Si 3 N 4和选自Y 2 O 3,MgO,ZrO 2中的至少一种元素的氮化硅烧结体。 在氮化硅体中,J相固溶体存在于晶间相中,其满足0.65x≤y≤x+ 2的关系,其中y是J相固溶体的量,x是量 的Y2O3作为添加剂。
摘要:
A transistor characteristic calculation apparatus using a large signal equivalent circuit model has a buffer trap circuit provided between a drain terminal and a source terminal such that a parallel circuit including a resistor and a capacitor, a diode, and another parallel circuit including a resistor and a capacitor are in turn connected in series.
摘要:
A honeycomb structure excellent in thermal dispersibility upon heating and being protected from damage due to thermal stress, and an efficient method for manufacturing the honeycomb structure. The structure is provided with porous partition walls, functioning as a filtration layer, through which exhaust gas flowing into the cells can flow out, and plugging portions. Additional plugging portions are further disposed in the open end portions to which the plugging portions are not disposed (unplugged open end portions) not so as to plug unplugged open end portions. Each cross-sectional shape of additional plugging portions in a direction perpendicular to the axial direction forms a predetermined pattern shape as a whole, and a barycenter of the pattern shape is located in almost the center of a cross section of a flow of the exhaust gas in a direction perpendicular to the axial direction.
摘要:
The present invention is characterized in that a casing 2 connected to an exhaust system 8, a honeycomb filter 3 placed in the inside of the casing 2, the honeycomb filter having a plurality of cells partitioned by partition walls, and plasma generation electrodes 6 placed being faced each other by sandwiching the honeycomb filter there are included, particulate matter contained in an exhaust gas is collected by the honeycomb filter 3, nitrogen monoxide contained in the exhaust gas is oxidized to nitrogen dioxide by nonthermal plasma generated between a pulse electrode 4 and an earth electrode 5 constituting the plasma generation electrodes 6, combustible materials in the particulate matter collected and deposited on the surface of the partition walls are removed through oxidation by the nitrogen dioxide produced. As a result, the honeycomb filter 3 can be regenerated.
摘要:
A hydraulic tappet includes a cam sliding portion, a skirt portion and a spring holding portion. The structure has an arrangement that the cam sliding portion is made of ceramic and oil is reserved in the spring holding portion. There is provide a hydraulic tappet capable of efficiently using motive power from a crank shaft, reducing transmission loss and improving the efficiency of the engine.
摘要:
The present invention provides an aluminium titanate ceramic composed of, as main crystalline phases, 60-85% of an aluminum titanate phase, 10-25% of a rutile phase, 2-10% of a corundum phase and 2-10% of a mullite phase, wherein the amount of vitreous phase is 5% or less. The aluminum titanate ceramic is superior in both heat cycle durability and casted property.
摘要:
A method of manufacturing silicon nitride sintered bodies comprising the steps of preparing a powder consisting essentially of 100 parts by weight of silicon nitride, 2.about.15 parts by weight of a rare earth element, 0.5.about.15 parts by weight of a Zr compound and 0.3.about.5 parts by weight of SiC, molding the thus prepared powder and firing the resulting molding.
摘要:
A power amplifier includes a semiconductor substrate including transistor cells, a drain electrode for the transistor cells located on the semiconductor substrate, a drain pad located on the semiconductor substrate and connected to the drain electrode, an ion-implanted resistance located in the semiconductor substrate and extending along and in contact with the drain pad, a floating electrode located on the semiconductor substrate and in contact with the ion-implanted resistance, and an output matching circuit located outside the semiconductor substrate. The power amplifier further includes a wire connecting the drain pad to the output matching circuit.