Jongil
Jongil Choi, Daejeon KR
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20100162886 | Cylinder Liner And Method Of Manufacturing The Same - The present invention relates to a cylinder liner and a method of manufacturing the cylinder liner. A cylinder liner according to the present invention has an outer surface covered by casting metal when a cylinder block is manufactured by integral casting, in which a plurality of engraved grooves is formed throughout the outer surface of the cylinder liner to increase bonding force between the casting metal and the outer surface of the cylinder liner. Further, a method of manufacturing a cylinder liner according to the present invention includes: coating a coating material onto the inner circumferential surface of a mold rotating and drying the coating material for a predetermined time; applying an engraved-groove forming material to engrave the surface of the coating material; forming a cylinder liner parent body by pouring and solidifying molten metal through the surface of the coating material where the engraved-groove forming material is applied; and roughening the outer surface of the cylinder liner with a plurality of engraved grooves for spraying, after drawing the cylinder parent body out of the mold and removing the coating material and the engraved-groove forming material covering the outer surface of the cylinder liner parent body. | 07-01-2010 |
Jongil Kim, Gyeonggi-Do KR
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20150016414 | WLAN SYSTEM AND HANDOVER METHOD AND APPARATUS FOR USE THEREIN - A Wireless Local Area Network (WLAN) system, a handover method, and an apparatus for use therein are provided. A handover method of a station in a wireless local area network (WLAN) system includes storing handover availability information received from a connected Access Point (AP) connected to the station; and suspending, when the handover availability information is set to “unavailable”, an operation for handover to another AP. | 01-15-2015 |
Jongil Park, Seoul KR
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20110099747 | ROBOT CLEANER - A robot cleaner comprises a main body having a suction port at a bottom surface thereof, a pair of wheel assemblies disposed at both sides of the main body, and configured to move the main body, a dust box mounted to contact the bottom surface of the main body, and configured to collect dust sucked through the suction port, a filter unit configured to filter air discharged from the dust box, a suction fan configured to form a suction pressure on a suction channel defined by the suction port, the dust box and the filter unit, and a battery disposed at a side of the dust box. | 05-05-2011 |
20120285165 | ENGINE SYSTEM BASED ON TURBO CHARGER AND FUEL RATIO IMPROVING METHOD THEREOF - An engine system may include an electric or mechanical supercharger and an LP-EGR, basically with a turbocharger, an EGR valve, a channel control valve, and a bypass valve, which control the flow rate of external air and exhaust gas, may be integrally operated, and a operation section may be divided into a turbo-lag and low torque section, a mid-load section, and mid/high-load section such that the open amount of EGR valve, channel control valve, and bypass valve may be optimally controlled, such that it may be possible to improve availability for a low-speed/high-load section with turbo-lag reduced, using supercharger and considerably increase the ratio of fuel efficiency improvement in the low-speed/high-load section, using LP-EGR operating with supercharger. | 11-15-2012 |
Jongil Yu, Seongnam KR
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20140203924 | REAR WARNING CONTROL METHOD AND SYSTEM FOR VEHICLE - A rear warning system for a vehicle that detects information regarding an area behind a vehicle and is operated based on the detected information. The system includes sensors configured to detect the information regarding the area behind the vehicle and a guiding device operated by a controller to provide a notification of the information regarding the area behind the vehicle received from the sensors. The sensors include an ultrasonic wave sensor configured to detect a target object spaced farther from the rear of the vehicle than a predetermined distance and a capacitance sensor configured to detect the target object closer than or equal to the predetermined distance. | 07-24-2014 |
Jongil Yu, Seongnam-Si KR
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20150160277 | APPARATUS OF DETECTING CAPACITANCE - An apparatus of detecting capacitance detects a capacitance change of a capacitive sensor. The apparatus includes a pulse modulator configured to output a charging signal including at least one pulse. A switch is configured to charge the capacitive sensor according to the charging signal and output a discharging signal from the capacitive sensor. A discharging compensator is configured to output a discharging delay signal by compensating a voltage level of the discharging signal during a falling period of the discharging signal. A detector is configured to output a detection signal by detecting a region where the discharging delay signal has a voltage threshold. A controller is configured to detect the capacitance change by measuring a discharging time of the capacitive sensor according to the detection signal. | 06-11-2015 |