摘要:
The invention provides a method for recovering metal beryllium from waste beryllium that has become radioactive in the reaction with neutrons, by converting the radioactive beryllium to halogenated beryllium with a halogen gas such as chlorine, bromine or iodine, and subsequently submitting the halogenated beryllium to thermal decomposition. In this way, the invention allows effective recovery of metal beryllium from waste, radioactive beryllium, thereby reducing production of radioactive wastes and ensuring an economical use of natural resources.
摘要:
Mo adsorbent for .sup.99 Mo-.sup.99m Tc generators has a skeleton structure having mainly repeating units represented by the general formula; ##STR1## wherein X is a halogen atom or alkoxide group having one to six carbon atoms, 10% or more of X is halogen, R is an alkylene, polymethylene, or carbon chain having unsaturated bond, repeating unit (D) is bonded to any one of repeating units (A), (B), and (C), the branch structure is controlled by the content of repeating units (A), (B), and (C), the adsorbent is insoluble in water and adsorbs selectively only Mo from an aqueous solution containing Mo, and elutes .sup.99m Tc generated from a radioactive isotope .sup.99 Mo. This Mo adsorbent uses .sup.99 Mo obtained from natural Mo by (n, .gamma.) method, therefore, a generator having the same size as conventional .sup.99m Tc generators is realized.
摘要:
A fluid pressure control device is equipped with a valve body which has an input port connected to a hydraulic fluid source, an output port which is connected to a pressure chamber of a clutch of an automatic transmission, and a discharge port. It further includes a solenoid valve which is incorporated in the valve body and has a valve spool designed to selectively connect the output port to the input port or the discharge port. A discharge passage extends from the discharge port of the valve body, the discharge passage having a discharge port which is positioned at a higher level than the liquid level of the oil pan of the automatic transmission. Finally, a reed valve acts to close the discharge port of the discharge passage to maintain fluid at the aforementioned higher level, and allows the discharge of the hydraulic fluid only through the discharge port.
摘要:
An organic silazane polymer is prepared by passing a silazane compound in por form through a hollow tube heated at 400.degree. to 700.degree. C. for activation and thermally polymerizing the silazane compound in a liquid phase. Inorganic fibers can be prepared from the organic silazane polymer by melt spinning, infusibilizing, and sintering. An apparatus for preparing an organic silazane polymer is also provided, comprising a heated reactor vessel for evaporating and thermally polymerizing a silazane compound, a heated hollow tube in flow communication with said reactor vessel for receiving the silazane compound vapor and heating it at 400.degree. to 700.degree. C. for activation, and a conduit, with a condenser for condensing the vapor, for feeding the condensed silazane compound back to the reactor.
摘要:
A nut anti-slipping member is provided, which has a nut insertion groove and covers bottom end portions of one-side opening end of a nut insertion hole. A nut is inserted in the nut insertion hole with the nut deviated from the nut anti-slipping member. In case when the nut is of a square-pole-shape type with rectangular section, the entire nut can pass upper parts of the anti-slipping member when the nut is inserted in the nut insertion hole in a horizontally longitudinal position, and a bottom part of the nut can pass the nut insertion groove when the nut is inserted in the nut insertion hole in a vertically longitudinal position.
摘要:
An automatic transmission shifting control including: a shifting target value calculating portion setting shifting target values, torque of a rotary-member on the output shaft side, and rate of change of rotating speed of a rotary-member on the input shaft side; a manipulated calculating portion setting manipulated amounts, a torque of the rotary-member on the input shaft side, a torque capacity of one coupling device engaging for a transmission shifting-action, and torque capacity of other coupling devices releasing the shifting-action; a torque assignment ratio calculating portion setting torque assignment ratios to transfer through the respective coupling devices to engage and release the shifting-action; when a second-shifting-action is required during a preceding first-shifting-action according to a first-shifting-model, the manipulated calculating portion switching the first-shifting-model corresponding to the first-shifting-action to a second-shifting-model corresponding to the second-shifting-action, implementing a transmission shifting control for the second-shifting-action according to the second-shifting-model.
摘要:
A control system for a vehicle performs torque down control to reduce torque of an engine by cutting off supply of fuel to at least one of the cylinders of the engine during an inertia phase of a power-on upshift. During the torque down control, the throttle opening is reduced to smaller than a throttle opening including an amount by which the throttle opening is increased so as to compensate for a part of the amount of torque reduction, by means of one or more cylinders to which the fuel continues to be supplied.
摘要:
In a gear shift control apparatus for a vehicle, since a torque sharing rate is set as a constraint for a motion equation for an automatic transmission, suitable control in torque delivery, which is considered difficult in gear shift control, can be implemented and also the motion equation can be solved. Furthermore, when at least four control operation amounts must be determined in order to achieve two gear shift target values, another engaging device is classified into any of an engaging-side clutch and a releasing-side clutch depending on how another clutch torque acts on progress of a gear shift, hence in addition to achieving torque sharing in accordance with a torque sharing rate between the engaging-side clutch and the releasing-side clutch, torque sharing among a plurality of engaging devices classified into a same side can be arbitrarily set. As a result, the respective control operation amounts can be determined.
摘要:
A speed change control system for reducing shift shocks of clutch-to-clutch shifting is provided. The control system is applied to a vehicle in which a transmission having engagement devices is connected to an output side of a prime mover, and in which a gear stage of the transmission is shifted among a plurality of stages by changing engagement states of the engagement devices. The speed change control system carries out a clutch-to-clutch shifting from a predetermined gear stage to another gear stage by reducing a torque capacity of the predetermined engagement device to be disengaged while increasing a torque capacity of another engagement device to be engaged. An output shaft torque calculation means calculates a target torque of an output shaft of the transmission on the basis of an input shaft torque of the transmission based on a drive demand, an angular acceleration of the input shaft, an angular acceleration of the output shaft, and a torque transmission ratios of the engagement devices to be engaged and to be disengaged. A torque capacity calculation means calculates a torque capacities of the engagement device to be engaged and to be disengaged during a torque phase and an inertia phase under the clutch-to-clutch shifting, on the basis of the target torque value of the output shaft, the angular acceleration of the input shaft, the angular acceleration of the output shaft, and the torque transmission ratios of the engagement devices to be engaged and to be disengaged.
摘要:
A control device of a vehicle drive device includes an engine, a supercharger pressurizing intake air of the engine, and an automatic transmission outputting power of the engine to drive wheels. The control device makes a temporal rise rate of an engine torque larger from a predetermined time point during an upshift of the automatic transmission, the upshift being a shift with the engine torque after end of the upshift made larger than that before start of the upshift, the predetermined time point being made earlier when a response delay of supercharging by the supercharger becomes larger. During the upshift, the engine torque is raised in accordance with an assumed progress of the upshift from the predetermined time point and the assumed progress of the upshift being an assumption that the upshift does not progress until the predetermined time point and the upshift starts progressing from the predetermined time point.