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    • 10. 发明授权
    • Multi-piece oil ring
    • 多片油环
    • US09140361B2
    • 2015-09-22
    • US14008632
    • 2012-03-29
    • Junichi TakahashiTakashi OnoGyo MuramatsuTakayuki Ichikawa
    • Junichi TakahashiTakashi OnoGyo MuramatsuTakayuki Ichikawa
    • F16J9/12F16J9/06F16J9/26F16J9/20
    • F16J9/12F16J9/064F16J9/066F16J9/203F16J9/26
    • A multi-piece oil ring is provided in which, even after long-term operation of an engine, adhesion and deposition of oil sludge are prevented, sticking of components does not occur, and a high oil control function can be maintained. The multi-piece oil ring includes a spacer expander and a pair of upper and lower side rails supported by the spacer expander. To achieve the above features, at least side faces of the side rails that face the spacer expander are coated with a fluorine-containing coating, and the spacer expander is coated with a metal coating. The angle of contact (θ1) of a paraffin-based lubricating oil with the portions of the side rails at 150° C. that are coated with the fluorine-containing coating is 50° or larger, and the angle of contact (θ2) of the paraffin-based lubricating oil with the portion of the spacer expander at 150° C. that is coated with the metal coating is 10 to 50°. The difference between θ1 and θ2 (θ1−θ2) is 30° or larger.
    • 提供了一种多片油环,其中即使在发动机长期运行之后,也防止了油污泥的粘附和沉积,不会发生部件粘附,并且可以保持高油控功能。 多片油环包括间隔件膨胀机和由间隔膨胀机支撑的一对上下侧轨道。 为了实现上述特征,面向间隔膨胀机的侧轨的至少侧面涂覆有含氟涂层,间隔膨胀机涂覆有金属涂层。 石蜡基润滑油与150℃的侧面部分涂覆有含氟涂层的接触角(&1; 1)为50°以上,接触角(& ; 2)石蜡基润滑油与间隔物膨胀机的部分在150℃下涂覆有金属涂层的比例为10至50度。 &thetas; 1和&thetas; 2(&thetas; 1-&thetas; 2)之间的区别是30°或更大。