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公开(公告)号：EP3604627A1
公开(公告)日：2020-02-05
申请号：EP18770383.0
申请日：2018-03-19
摘要： In order to provide a composite chrome plating film having excellent wear resistance and low aggression against a mating material (sliding member), and a piston ring having the film, hard particles are composited in network-shaped microcracks in a composite chrome plating film, and the crystal orientation of the composite chrome plating film is such that in X-ray diffraction measurement of a coated surface of the composite chrome plating film, the X-ray diffraction intensity I (110) of a Cr (110) plane is the highest, and the ratio (I (110) /I (200) ) of the I (110) to the X-ray diffraction intensity I (200) of a Cr (200) plane is 9.5 or more.
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公开(公告)号：EP3282149B1
公开(公告)日：2019-11-20
申请号：EP16776664.1
申请日：2016-04-08
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公开(公告)号：EP3282149A1
公开(公告)日：2018-02-14
申请号：EP16776664.1
申请日：2016-04-08
摘要： To provide a combined oil control ring comprising a pair of upper and lower side rails and an axially corrugated spacer expander having upper and lower portions for automobile engines, which is capable of keeping an excellent oil-controlling function without sticking between a spacer expander and side rails even in a long period of engine operation, the upper and lower portions of the spacer expander have tabs pushing inner peripheral surfaces of the side rails, projections supporting the side rails, and intermediate portions between the tabs and the projections; and each intermediate portion opposing the side rail has a center-raised bottom having a center-raised shape when viewed along a substantially circumferential direction center-raised shape and a radial direction.
摘要翻译： 为了提供一种组合的油控制环，其包括一对上下侧导轨和一个具有用于汽车发动机的上部和下部的轴向波纹间隔膨胀机，其能够保持优异的控油功能而不会粘在间隔膨胀机和侧部之间 即使在长时间的发动机操作中，间隔扩展器的上部和下部也具有推压侧轨的内周表面的突片，支撑侧轨的突起以及突片和突起之间的中间部分; 并且在沿着大致圆周方向的中央隆起形状和径向方向观察时，与所述侧轨相对的每个中间部分具有中央隆起底部，所述中央隆起底部具有中央隆起形状。
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公开(公告)号：EP2693085B1
公开(公告)日：2018-10-10
申请号：EP12765131.3
申请日：2012-03-29
摘要： 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 (¸ 1 ) 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 (¸ 2 ) 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 ¸ 1 and ¸ 2 (¸ 1 -¸ 2 ) is 30° or larger.
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公开(公告)号：EP2693085A1
公开(公告)日：2014-02-05
申请号：EP12765131.3
申请日：2012-03-29
摘要： 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 (θ 1 ) 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 (θ 2 ) 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 θ 1 and θ 2 (θ 1 -θ 2 ) is 30° or larger.
摘要翻译： 提供了一种多件式油环，其中即使在发动机长期运转之后，也能防止油泥的粘附和沉积，从而不会发生部件的粘附，并且可保持高油控功能。 多件式油环包括间隔扩展器和由间隔扩展器支撑的一对上侧和下侧导轨。 为了实现上述特征，至少侧轨的面向间隔膨胀机的侧面涂覆有含氟涂层，并且间隔膨胀机涂覆有金属涂层。 石蜡系润滑油与涂布有含氟涂层的150℃的侧轨的部分的接触角（θ1）为50°以上，并且该含氟涂层的接触角（θ2） 间隔膨胀机在150℃下涂覆有金属涂层的部分的石蜡基润滑油为10至50°。 θ1和θ2之差（θ1-θ2）为30°或更大。
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