摘要:
Disclosed is a lyocell multi-filament for a tire cord and a method of producing the same. The method includes i) dissolving mixed powder of cellulose and polyvinyl alcohol in a mixed solvent of N-methyl morpholine N-oxide and water to prepare a dope, ii) extruding the dope using a spinning nozzle including orifices through air gaps into a conical upper coagulation bath to solidify the dope to produce a multi-filament, iii) feeding the multi-filament through a lower coagulation bath to a washing bath, and washing the multi-filament, and iv) drying and oiling the washed multi-filament and winding the resulting multi-filament. At this time, the orifices each have a diameter (D) of 100 to 300 μm, a length (L) of 200 to 2400 μm, and a ratio of the length to the diameter (L/D) of 2 to 8, and are spaced apart from each other at intervals of 2.0 to 5.0 mm. The method provides a lyocell multi-filament having excellent physical properties useful as a tire cord, thereby producing a tire for an automobile having improved driving stability, dimensional stability, and uniformity using the tire cord.
摘要:
Regarding a vehicle provided with at least one of a left rearview mirror and a right rearview mirror, a head position of a vehicle driver may be determined on the basis of at least one of vertical and horizontal inclination angles of the at least one rearview mirror.
摘要:
A variable capacity rotary compressor to prevent an eccentric bush and a locking pin from being deformed or worn out due to a variance in a pressure of a compression chamber as a rotating shaft rotates. The compressor includes upper and lower compression chambers having different interior capacities thereof, and a rotating shaft. Upper and lower eccentric cams are provided on the rotating shaft to be eccentric from the rotating shaft in a common direction. Upper and lower eccentric bushes are fitted over the upper and lower eccentric cams, respectively, with a slot provided at a position between the upper and lower eccentric bushes. The locking pin operates to change a position of the upper or lower eccentric bush to a maximum eccentric position. Further, surfaces of parts around first and second ends of the slot are heat-treated, thus increasing a hardness thereof.
摘要:
Disclosed is a variable capacity scroll compressor including a stationary scroll member on which a stationary spiral wrap is formed, an orbiting scroll member on which an orbiting spiral wrap is formed, the orbiting scroll member rotating while surface-contacting the stationary scroll, a driving motor, a driving shaft for rotating the orbiting scroll member using power transmitted from the driving motor, a control chamber formed on a predetermined portion of the stationary spiral wrap, a pivotal block disposed in the control chamber, and a controller for controlling a pivotal motion of the pivotal block.
摘要:
Disclosed is a variable capacity scroll compressor including one or more bypass ports formed in a compression space, the bypass port being manipulated by intake/exhaust pressure of the compressor to control compression volume in multi-stages.