摘要:
A centrifugal clutch includes a clutch weight in a plane perpendicular to a rotation axis of an input member for enabling friction fitting to an inside of a clutch housing. The clutch weight is turnably supported by a drive plate. A grooved portion is provided on a clutch weight in a position that is opposite to a drive plate. At least one end of grooved portion is closed and is formed in a turning direction of the clutch. A damping rubber supported by the drive plate abuts against an inside face of the grooved portion. The damping rubber is held in the grooved portion in a compressed state by being compressed between the drive plate and the clutch weight. The centrifugal clutch so configured effectively inhibits vibration of a clutch weight when the clutch is let in, and minimizes both the parts required and man-hours for assembly.
摘要:
An overlay layer is formed on a bearing alloy layer via an intermediate layer. The overlay layer consists of Bi or a Bi alloy, and 0.05 to 25 vol % of hard particles. While the overlay layer is made of Bi or a Bi alloy, wear resistance thereof can be improved by adding the hard particles.
摘要:
A belt continuously variable transmission apparatus having a case which includes a power transmission case (which is part of a crankcase of an engine), a power transmission case cover, and an actuator cover assembled forwardly of the power transmission case cover (displaced forwardly on a vehicle body). The actuator cover is formed as a separate member from the power transmission case cover, and supports a motor for driving a movable part of a driving pulley. In addition, the actuator cover covers a gear system. The actuator cover is integrated with a cover of the water pump. The resulting configuration improves the assembling of the actuator cover of the belt continuously variable transmission apparatus.
摘要:
A multilayer sliding material for high-speed engine, comprising a steel back metal, a Cu or Cu-base alloy plating layer, a Cu-Pb bearing alloy layer, and an overlay, said steel back metal having 155 or more of Vickers hardness and 42 kgf/mm.sup.2 or more of 0.2% yield strength, a Cu-Pb bearing alloy layer containing 15-30 wt % of Pb and 0.5-2.0 wt % of Sn and having 0.25 cal/cm.s..degree. C. or more of thermal conductivity, 75 or more of Vickers hardness and 18 kgf/mm.sup.2 or more of tensile strength, said overlay of a lead base alloy containing 2-8 wt % of Sn and 3-11 wt % of In and having more than 250.degree. C. of melting start temperature. The material has a superior antiseizure property at high speed of engine. In particular, the rising of the melting start temperature of the metal of the overlay and the thermal conductivity of the bearing alloy provides a superior sliding property of plain bearing at high speed of engine.
摘要:
A multilayer sliding material which is used, in particular, as the material of the bearings in internal combustion engines, comprising a steel backing layer, a bearing layer of copper-based alloy bonded to the steel backing layer, a silver or silver alloy plating layer bonded to the bearing layer, and a surface layer of lead-based alloy bonded to the silver or silver alloy plating layer, the silver or silver alloy plating layer having a thickness of more than 3 microns but not more than 50 microns. The multilayer sliding material having a thick plating layer of silver or silver alloy, excels in seizure-resisting.
摘要:
A polyethylene composition having excellent melt moldability which substantially comprises an ultrahigh-molecular-weight polyethylene having a molecular weight of, for example, at least about 1,650,000 and a low-molecular-weight to high-molecular-weight polyethylene having a molecular weight of, for example, about 1500 to about 360,000. The composition is produced by a multi-stage polymerization process involving a step of producing the ultrahigh-molecular-weight polyethylene and a step of producing the low-molecular-weight to high-molecular-weight polyethylene.
摘要:
To provide a power unit capable of contributing to simplifying the procedure for fitting the electric motor for speed change use and the starter motor to shorten the motor wiring to facilitate the wiring and for concentrating the mass. A power unit includes a unit case which is journaled in a front part to a pivot shaft and a belt-driven continuously variable transmission is provided together with an internal combustion engine. An electric motor for transmission and a starter motor are provided together and supported by the unit case. The electric motor and the transmission are arranged to be adjoining each other on the same side as the pivot shaft in a side view. The electric motor for transmission is arranged in a position closer to the pivot shaft than the starter motor.
摘要:
To provide a power unit capable of contributing to simplifying the procedure for fitting the electric motor for speed change use and the starter motor to shorten the motor wiring to facilitate the wiring and for concentrating the mass. A power unit includes a unit case which is journaled in a front part to a pivot shaft and a belt-driven continuously variable transmission is provided together with an internal combustion engine. An electric motor for transmission and a starter motor are provided together and supported by the unit case. The electric motor and the transmission are arranged to be adjoining each other on the same side as the pivot shaft in a side view. The electric motor for transmission is arranged in a position closer to the pivot shaft than the starter motor.
摘要:
The shift response in a V-belt type automatic transmission is improved using a double cogged V-belt having an endless core wire embedded portion in which core wires are embedded, a lower cog formed portion provided over the inner circumference of the core wire embedded portion, and an upper cog formed portion provided over the outer circumference of the core wire embedded portion, as a V-belt for transmitting power from a drive pulley device to a driven pulley device. Each of the core wires is formed from aramid fibers, and the ratio (W/T) of the width W of the V-belt to the thickness T of the V-belt is set to 2.5 or less.
摘要:
There are disclosed a process for preparing 2-hydroxy-2-(6-methoxy-2-naphthyl)propionic acid or 2-hydroxy-(4-substituted phenyl)propionic acid derivative which comprises reacting 2-methoxynaphthalene or substituted benzene derivatives with pyruvic acid in the presence of a Lewis acid and then, if necessary, hydrolyzing the obtained product, and a process for preparing 2-(6-methoxy-2-naphthyl)propionic acid or 2-(4-substituted phenyl)propionic acid derivative which comprises reducing 2-hydroxy-2-(6-methoxy-2-naphthyl)propionic acid or 2-hydroxy-2-(4-substituted phenyl)propionic acid derivative in a lower aliphatic acid in the presence of an inorganic acid under hydrogen atmosphere by using a metal catalyst.