公开(公告)号：US5743219A

公开(公告)日：1998-04-28

申请号：US828591

申请日：1997-03-31

申请人： Hiroshi Iio ,  Hiroyuki Nakai

发明人： Hiroshi Iio ,  Hiroyuki Nakai

IPC分类号： B60K5/04 ,  F02B61/02 ,  F02B75/02 ,  F02B75/18 ,  F02B75/22 ,  F02F1/24 ,  F02F7/00 ,  F02B77/00

CPC分类号： F02B61/02 ,  F02B75/22 ,  F02F7/006 ,  F02B2075/027 ,  F02B2075/1808 ,  F02B2275/18 ,  F02F2001/245

摘要： A four-stroke-cycle engine of a motorcycle arranged between front and rear wheels thereof has a crank case in which a crank shaft is arranged and a plurality of cylinder assemblies operatively connected to the crank shaft and includes a front-side cylinder assembly and a rear-side cylinder assembly along a longitudinal direction of a motorcycle body. Each of the cylinder assemblies is composed of a cylinder block, a cylinder head mounted to a head portion of the cylinder block and a head cover covering the cylinder head. The cylinder assemblies are arranged so as to provide V-shapes along the longitudinal direction of the motorcycle body. A mating surface formed between the head cover and the cylinder head of at least the front-side cylinder assembly of the plural cylinder assemblies has an inclination obliquely downward towards the front wheel with respect to a mating surface formed between the cylinder head and the cylinder block of the front-side cylinder assembly.

摘要翻译： 布置在其前轮和后轮之间的摩托车的四冲程循环发动机具有曲轴箱，其中布置有曲轴，并且多个气缸组件可操作地连接到曲轴，并且包括前侧气缸组件和 后侧气缸组件沿着摩托车主体的纵向方向。 每个气缸组件由气缸体，安装在气缸体的头部的气缸盖和覆盖气缸盖的气缸盖构成。 气缸组件布置成沿着摩托车主体的纵向方向提供V形。 形成在多个气缸组件的至少前侧气缸组件的头盖和气缸盖之间的配合表面相对于形成在气缸盖和气缸体之间的配合表面向着前轮倾斜向下倾斜 的前侧气缸组件。