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发明公开
CN104696090A 鞍乘型车辆的内燃机 有权

鞍乘型车辆的内燃机
摘要：
提供一种鞍乘型车辆的内燃机，该内燃机成本低、构造简单且维护性优越，能够在内燃机搭载于车辆的状态下分解内燃机而拆下气缸盖及气缸体。该内燃机(20)具有以下构造：下端的嵌入螺纹部(71a、72a)螺合嵌设于曲轴箱(21)的多个双头螺栓(71、72)贯穿依次重叠在所述曲轴箱(21)上的气缸体(22)和气缸盖(23)，在该双头螺栓(71、72)的贯穿气缸盖(23)而突出的上侧螺纹部(71b、72b)螺合紧固有螺母部件(71N、72N)。在内燃机(20)支承搭载于车架(2)的鞍乘型车辆的内燃机中，双头螺栓(71、72)在比上侧螺纹部(71b、72b)靠近上侧的位置形成有供工具卡合而能够转动该双头螺栓(71、72)的工具卡合部(71c、72c)。
摘要（英）：

A saddle type vehicle internal combustion engine is low in cost, simple in structure, excellent in maintenance, and can dismount a cylinder cover from a cylinder when the internal combustion engine is on the vehicle; the internal combustion engine (20) has the following elements: lower nested screw portions (71a, 72a), a plurality of dual-end bolts (71, 72) screwed on a crankcase (21), a cylinder body (22) penetrating and stacking on the crankcase (21), and the cylinder cover (23); upper screw portions (71b and 72b) protruding on the cylinder cover (23) of the dual-end bolts (71, 72) are fixed with screw nuts (71N, 72N); the internal combustion engine is arranged on a vehicle frame (2), positions, closer to an upper side, of the dual-end bolts (71,72) when compared with the upper screw portions (71b and 72b) are provided with a tool clamp portion (71c and 72c) used for clamping the tools and rotating the dual-end bolts (71 and 72).

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