Abstract: A regeneration device for a filter (13) which traps particulate matter in an exhaust gas of an engine (1) is disclosed. The regeneration device has a sensor (25) which detects an engine running point containing an engine load and a controller (22) storing a map which defines a low load region (A) relating to engine running points. The controller (22) determines whether or not the detected engine running point is in the low load region referring to the map, when the deposition amount of particulate matter is more than a first reference amount (PMn). Further, the controller (22) immediately start a first filter regeneration control by raising a temperature of the exhaust gas, when the detected engine running point is not in the low load region, and start a second filter regeneration control by raising the temperature of the exhaust gas after the deposition amount of particulate matter exceeds a second reference amount (PMe), when the detected engine running point is in the low load region.

Abstract: A filter (41) traps particulate matter in the exhaust gas of a vehicle diesel engine (1). A vehicle speed sensor (51) detects a vehicle speed, and a controller (31) determines a vehicle running pattern from the vehicle speed. In the regeneration of the filter (41) to eliminate trapped particulate matter by burning, the controller (31) controls the exhaust gas temperature of the diesel engine (1) to a different target temperature according to the running pattern. As a result, there are less opportunities for regeneration of the filter (41) to be interrupted due to exhaust gas temperature drop, and regeneration of the filter (41) is ensured.

Abstract: An exhaust gas purifying system for an automotive internal combustion engine. The exhaust gas purifying system comprises a particulate filter disposed in an exhaust gas passageway of the engine to collect particulate in exhaust gas flowing through the exhaust gas passageway. The collected particulate is burnt off to be removed by raising a temperature of exhaust gas in a condition in connection with the particulate filter. A plurality of devices are provided for raising the temperature of exhaust gas to be introduced into the particulate filter through the exhaust gas passageway when the collected particulate is burned off to be removed. Additionally, a control unit is configured to select at least one of the devices in accordance with an engine operating region and preferentially operate the selected at least one of the devices for raising the exhaust gas temperature.

Abstract: In regeneration apparatus and method for a particulate filter that collects a particulate in exhaust gas of an internal combustion engine, a timing at which an accumulated particulate is combusted to regenerate the particulate filter is determined and a control is performed for a combustion of the particulate, during the control for the combustion of the particulate, a temperature of the engine exhaust gas is raised to a first target temperature set at a temperature equal to or higher than a criterion temperature which provides a criterion of whether the particulate is combusted to regenerate the particulate filter when the engine falls in a first driving region, and the engine exhaust gas temperature is raised to a second target temperature set at a temperature lower than the criterion temperature when the engine falls in a second driving region different from the first driving region.

Abstract: An exhaust gas purifying system of a diesel engine comprises a PM filter installed in an exhaust passage line of the engine to collect particulate matter (PM) in the exhaust gas from s the engine; a pressure difference sensor for detecting a pressure difference between upstream and downstream portions of the PM filter; a control unit which comprises a collected PM amount estimating section that estimates an amount of collected PM in the PM filter based on the pressure difference; and a reactivation timing judging section that, based on the estimated amount of the collected PM, judges a reactivation time when the reactivation of the PM filter is needed; and a reactivation carrying out system that, upon judgment of the reactivation time, carries out a predetermined operation to increases the temperature of the PM filter thereby to burn the collected PM.

Abstract: An exhaust gas purification system includes a particulate filter, a sensor that detects a filter differential pressure and a controller that controls regeneration of the particulate filter. The controller is programmed to execute a control for burning particulate accumulated on the particulate filter, determine whether regeneration of the particulate filter is completed, detect, in cooperation with the sensor, a filter differential pressure immediately after it is determined that regeneration of the particulate filter is completed, and estimate an ash accumulation amount based on the detected filter differential pressure. An exhaust gas purification method is also provided.

Abstract: Provided are a granular inorganic filler which is highly effective in improving the physical properties of resins and excellent in working efficiency, working atmosphere, productivity and economical efficiency, a process for producing the filler, and resin compositions excellent in mechanical properties, surface appearance, flame retardance and antiblock properties. The filler is produced by granulating a mixture comprising inorganic filler particles having a mean particle diameter of 0.01 to 20 &mgr;m and a binder in such a way as to give an apparent density of 0.1 to 3.0 g/ml and a breakage rate of 5 to 80 wt %. The resin compositions are prepared by adding the granular inorganic filler to resins.

Abstract: An exhaust passage (2) of a diesel engine (1) is provided with a filter (41) for trapping particulate matter. Regeneration of the filter (41) is divided into first to third phases. In the first phase the filter temperature is raised to the combustion temperature of the particulate matter in a short period of time through control of the exhaust gas temperature. In the second phase, the oxygen concentration of the exhaust gas is held at a predetermined low level while the filter temperature is maintained so as to prevent excessive combustion of particulate matter. In the third phase, wherein the amount of trapped particulate matter has been reduced, the oxygen concentration of the exhaust gas is held at a predetermined high level while the filter temperature is maintained so as to complete the combustion of the trapped particulate matter.

Abstract: The present invention relates to an article having a silver layer and a resin composition for a coating material for silver which is used in reflective mirrors of photocopy machines and reflective members for indoor and outdoor lighting appliances, automobile headlights and the like. The article having a silver layer of the present invention has a first cured coating layer (A) comprising a resin having anti-corrosion properties for silver, and adhesiveness for both the substrate and silver or metal comprising mainly silver formed between the substrate and the silver layer (B); and, formed on the silver layer (B), a second cured coating layer (C) comprising a resin selected from the group consisting of a silicone acrylic resin (cl), a silicone alkyd resin (c2), and a multi-functional silicon cross-linked resin (c3) having a main chain formed by siloxane bonds. This type of article having a silver layer is superior in anti-discoloration (anti-corrosion) properties of the silver layer (B).

Abstract: The present invention relates to an article having a silver layer and a resin composition for a coating material for silver which is used in reflective mirrors of photocopy machines and reflective members for indoor and outdoor lighting appliances, automobile headlights and the like. The article having a silver layer of the present invention has a first cured coating layer (A) comprising a resin having anti-corrosion properties for silver, and adhesiveness for both the substrate and silver or a metal comprising mainly silver formed between the substrate and the silver layer (B); and, formed on the silver layer (B), a second cured coating layer (C) comprising a resin selected from the group consisting of a silicone acrylic resin (c1), a silicone alkyd resin (c2), and a multi-functional silicone cross-linked resin (c3) having a main chain formed by siloxane bonds. This type of article having a silver layer is superior in anti-discoloration (anti-corrosion) properties of the silver layer (B).

Abstract: The present invention relates to an article having a silver layer and a resin composition for a coating material for silver which is used in reflective mirrors of photocopy machines and reflective members for indoor and outdoor lighting appliances, automobile headlights and the like. The article having a silver layer of the present invention has a first cured coating layer (A) comprising a resin having anti-corrosion properties for silver, and adhesiveness for both the substrate and silver or a metal comprising mainly silver formed between the substrate and the silver layer (B); and, formed on the silver layer (B), a second cured coating layer (C) comprising a resin selected from the group consisting of a silicone acrylic resin (c1), a silicone alkyd resin (c2), and a multi-functional silicone cross-linked resin (c3) having a main chain formed by siloxane bonds. This type of article having a silver layer is superior in anti-discoloration (anti-corrosion) properties of the silver layer (B).

Abstract: An exhaust gas recirculation system for returning part of exhaust gas of an engine to an intake system has at least one EGR gas introduction port for directing the EGR gas into an intake air passage downstream of a throttle valve. The EGR introduction port opens, into the intake passage, in a tangential direction to produce a circumferential flow along an inside curved surface of the intake air passage around a central back flow region behind the throttle valve to mix the EGR gas efficiently with the fresh intake air and to prevent deposits on the throttle valve.

Abstract: This invention relates to a helical intake port for an internal combustion engine comprising a straight passage, a swirl passage connected to the straight passage and formed in a spiral around the center of an intake valve, and a cylindrical throat connected to the swirl passage via an opening over the whole area of the swirl passage. The cross-sectional area S of the swirl passage is determined by the following equation: ##EQU1## where: .beta.=swirl angle from swirl start position,.beta.0=whole swirl angle from swirl start position to swirl end position of swirl passage,S0=cross-sectional area of swirl passage at swirl start position.As a result, swirl can be enhanced and a high flow coefficient of the intake port can be realized.

Abstract: An oxide superconductor comprises a base material consisting of a single crystalline oxide, an oxide superconductor film consisting of a Y123 compound and formed on the single crystalline oxide base material, and a coating film consisting essentially of a Ba--Cu--O oxide and covering the surface of the oxide superconductor film, the coating film having a thermal expansion coefficient higher than that of the oxide superconductor film.

Abstract: A process for preparing an oxide crystal by means of solution growth in the presence of a solvent is provided. The solvent includes a mixture of an oxide containing at least one member of those elements which constitute the oxide crystal, a halide containing at least one member of those elements which constitute the oxide crystal, and metallic silver.

Abstract: An intake port of a diesel engine comprises a straight part, a winding part and a cylindrical part. A connecting port connecting the winding part with the cylindrical part is formed at a height H from the roof of the combustion chamber. H=Rt.multidot..alpha..multidot.tan .theta., where Rt=radius of cylindrical part, .alpha.=angle subtended by the flowrate gravity center position and optimum inflow position of the connecting port at the center of the cylindrical part, .theta.=aspirated air descending angle in winding part. Due to this height setting, both swirl intensification and volume efficiency improvement are achieved.

Abstract: In order to provide a crystal oriented high quality thallium group superconducting wire having a high critical current density, thallium group superconducting film is formed on oxide single crystal fiber having plane facets and polygonal cross section in the thallium group superconducting wire, wherein c-axis of the thallium group superconducting film is oriented perpendicularly, and a- and b-axis are oriented in parallel to the longitudinal direction of the above fiber, respectively, and resulting to obtain a high quality thallium group superconducting wire with Jc of 10.sup.5 A/cm.sup.2 or more at 77K.

Abstract: A magneto for two-cycle engines comprises a rotor provided with a magnet and a pair of poles, and a stationary assembly including a U-shaped iron core having a pair of legs and an ignition coil wound around one of the legs. The magnetic circuit provided by the pair of core legs, the pair of poles and the magnet includes a magnetic path through the other leg which path is given an increased magnetic resistance by a gap portion. The gap portion is formed in the end face or a side face of the other leg or in one of the poles in the end face thereof opposed to the other leg.

Abstract: 2-Chloro-5-trichloromethyl pyridine is produced by reacting .beta.-picoline with chlorine in a gaseous phase at 300.degree. to 500.degree. C. in the presence of an inert diluent of nitrogen, a halogenated methane, a halogenated ethane a halogenated ethylene or a mixture thereof. 2-Chloro-5-trichloromethyl pyridine is useful as an intermediate for medicines, agricultural chemicals, dyes especially herbicides.

Abstract: Gypsum and magnetite which are both coarse and of good quality can simultaneously be produced by introducing calcium carbonate into an aqueous solution containing ferrous sulfate while an oxidizing gas is blown, and then carrying out a neutralizing and oxidizing operation at a pH of 5-6 and a temperature of 60-80.degree. C, and can be separately recovered by magnetic separation.