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实用新型
CN202284502U 发动机第三道油环 失效 - 权利终止

发动机第三道油环
摘要：
本实用新型提供一种发动机第三道油环，所述第三道油环包括衬环、上刮片环和下刮片环；所述衬环具有第一环段、主环段和第二环段；所述上刮片环套设于所述第一环段，所述下刮片环套设于所述第二环段。本实用新型的有益效果是：其采用衬环、上刮片环和下刮片环组成的组合第三道油环，由上刮片环和下刮片环将机油均匀的布置在缸壁上，同时刮离多余的机油。上刮片环的内外周截面为桶形，下刮片环的内外周截面亦为桶形，由第一环段和第二环段的径向支撑形成低组合张力。
摘要（英）：

The utility model provides a third oil ring of an engine. The third oil ring comprises a bushing ring, an upper doctor blade ring and a lower doctor blade ring; the bushing ring is provided with a first ring section, a main ring section and a second ring section; and the upper doctor blade ring is sleeved on the first ring section, and the lower doctor blade ring is sleeved on the second ring section. The utility model has the advantages that: according to the combined third oil ring consisting of the bushing ring, the upper doctor blade ring and the lower doctor blade ring, engine oil is uniformly arranged on the cylinder wall by the upper doctor blade ring and the lower doctor blade ring, and the redundant engine oil is scraped by the upper and lower doctor blade rings. The inner peripheral section of the upper doctor blade ring is barrel-shaped, the inner peripheral section of the lower doctor blade ring is also barrel-shaped, and radial supports of the first ring section and the second ring section form a low combined tension.

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