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发明公开
CN103133172A 内燃机的罩结构 有权

内燃机的罩结构
摘要：
本发明提供一种内燃机的罩结构，其能够抑制润滑油滞留在突出部处。发动机（E）的罩结构具备传动链盒（30），在该传动链盒与发动机主体（10）之间形成正时轮系室（S）并且该传动链盒覆盖正时轮系机构（20）。传动链盒（30）具有：螺栓贯穿插入孔（31a、32a），其设于侧缘部（31、32）并紧固于发动机主体（10）；可变气门用凸台部（36）和第二油通路用凸台部（38），它们从壁部（33）朝向发动机主体（10）突出并具有供润滑正时轮系机构（20）的润滑油滞留的凹部（30A）；以及第一肋（41），其从壁部（33）朝向发动机主体（10）突出并设置在凹部（30A）的至少上方。
摘要（英）：

A cover structure, for an internal combustion engine, that can inhibit lubricating oil from remaining at a protrusion portion is provided. The cover structure for an engine includes a chain case that covers a timing train mechanism, and a timing train chamber is formed between the chain case and the engine main body. The chain case includes bolt insertion holes provided at side marginal portions and directed toward the engine main body, a variable-valve boss portion and a second oil-path boss portion that protrude from a wall portion toward the engine main body and form a recessed portion where lubricating oil for lubricating the timing train mechanism remains, and a first rib that is protruding from the wall portion toward the engine main body and provided upper than at least the recessed portion.

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