Hyundai Motor Company

Kia Motors Corporation

Yoosung Enterprise Co., Ltd.

Jinwoo Cho

Wootae Kim

Joongsoo Kim

Gabseok Ko

Minsig Shin

Changbae Han

Hongwook Lee

Sangdeuk Han

Myungrae Cho

Jongku Park

Jongil Choi

Giseog An

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.

Cylinder liner and method of manufacturing the same

An oil discharging structure of a balance shaft module smoothly discharging oil pumped by a balance shaft outside of the balance shaft module by forming an oil guide surface in a ladder frame that is installed in an upper part of the balance shaft module. The oil discharging structure of the present invention preferably includes a balance shaft housing that is rotatably supported with a balance shaft inserted therein; oil discharge holes formed in the balance shaft housing so that oil in the balance shaft housing is discharged to the outside by the balance shaft; and an oil guiding portion that is provided in a ladder frame mounted on an upper part of the balance shaft housing in order to induce the oil discharged through the oil discharge holes to the outside of the balance shaft housing.

Oil discharging structure for balance shaft module

Growing community of inventors

Gyeonggi-do, South Korea

Jinwoo Cho