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1. 发明授权

US06827068B1 Oil seal and drain structure for engine 有权
标题翻译：发动机油封和排水结构
公开(公告)号：US06827068B1
公开(公告)日：2004-12-07
申请号：US10783171
申请日：2004-02-20
申请人： Shigekazu Sakata , Brian Doklovic , Shinji Katayama , Hiroshi Hojo , Tetsuya Kobayashi
发明人： Shigekazu Sakata , Brian Doklovic , Shinji Katayama , Hiroshi Hojo , Tetsuya Kobayashi
IPC分类号： F01M300
CPC分类号： F01M13/04 , F01M9/06 , F01M2013/0433 , F02B75/005 , F02B75/007 , F02F1/002
摘要： A lubrication and breather system for an engine that is generally adapted for use as either a vertically-oriented crankshaft-type engine or a horizontally-oriented crankshaft-type engine. The crankcase has first and second bearing bosses supporting first and second journal portions of the crankshaft. The second bearing boss lies above the first bearing boss when the engine is of the vertical-type. The system includes a cap that is secured over the second bearing boss and cooperates with the second bearing boss to define an annular chamber for receiving splashed oil produced in the crankcase. The cap has a plurality of ribs formed thereon that reduce an amount of oil, which is entrained in the blow-by gas, sent from the annular chamber to the breather chamber. The second bearing block includes an oil feed hole, a plurality of oil sumps, and a plurality of oil return holes, with the oil return holes being of relatively smaller size. Each of the oil sumps is associated with one oil return hole. A volume of oil ordinarily remains in the oil sump to limit entry of blow-by gases into the annular chamber via the oil return holes.
摘要翻译：用于发动机的润滑和通气系统，其通常适于用作垂直取向的曲轴式发动机或水平取向的曲轴式发动机。曲轴箱具有支撑曲轴的第一和第二轴颈部分的第一和第二轴承凸起。当发动机为垂直型时，第二轴承凸台位于第一轴承座上方。该系统包括固定在第二轴承凸台上并与第二轴承凸台协作以限定用于接收在曲轴箱中产生的飞溅的油的环形室的盖。所述盖具有形成在其上的多个肋，其减少了从所述环形室发送到所述通气室的在所述窜气中夹带的油量。第二轴承座包括供油孔，多个油底壳和多个回油孔，其中回油孔的尺寸相对较小。每个油槽与一个回油孔相关联。石油通常保留在油槽中以限制窜气通过回油孔进入环形室。

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