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    • 3. 发明授权
    • Piston for cylinder direct injection spark ignition internal combustion
engine
    • 活塞缸直喷火花点火内燃机
    • US06129070A
    • 2000-10-10
    • US155314
    • 1998-09-25
    • Nobuhisa JinguMitsuhiro Akagi
    • Nobuhisa JinguMitsuhiro Akagi
    • F02B23/06F02B23/10F02B75/02F02B75/12F02F3/26F02F3/24F02B3/08
    • F02B23/0675F02B23/104F02F3/26F02B2075/027F02B2075/125Y02T10/123Y02T10/125
    • A piston for a cylinder direct injection spark ignition internal combustion engine mounted on an automotive vehicle. The piston comprises a piston head including a protruded section which is protruded from a standard horizontal plane which is perpendicular to a center axis of the piston. The protruded section has a cavity whose periphery forms a generally circular ridgeline, and an inclined surface formed outside the ridgeline and extending toward a periphery of the piston head. The inclined surface continuously slopes down in a direction from the ridgeline to the periphery of the piston. The inclined surface forms an angle (.theta.1) ranging from 10 to 60.degree. relative to the standard horizontal plane. The cavity has a depth (A) within a range of from 3 to 9 mm which depth is an axial distance between a bottom surface of the cavity and the standard horizontal plane of the piston. Additionally, the cavity is defined by a generally annular side wall surface which is represented by first and second opposite curved line segments on a vertical plane containing a center axis of the piston and a center axis of the cavity. The first curved line segment is located closer to a spark plug than the second curved line segment. The first curved line segment has a radius of curvature, ranging from 5 to 20 mm.
    • PCT No.PCT / JP98 / 02271 Sec。 371日期:1998年9月25日 102(e)1998年9月25日PCT PCT 1998年5月25日PCT公布。 公开号WO98 / 55743 日期1998年12月10日安装在汽车上的气缸直喷火花点火内燃机的活塞。 活塞包括活塞头,该活塞头包括从垂直于活塞的中心轴线的标准水平面突出的突出部分。 突出部具有形成大致圆形的脊线的空腔,以及形成在棱线外侧并朝向活塞头的周边延伸的倾斜面。 倾斜面在从脊线到活塞的周边的方向上连续地向下倾斜。 倾斜表面相对于标准水平面形成10至60度的角度(θ1)。 空腔的深度(A)在3至9mm的范围内,其深度是空腔的底表面和活塞的标准水平面之间的轴向距离。 此外,空腔由大致环形的侧壁表面限定,其由包含活塞的中心轴线和空腔的中心轴的垂直平面上的第一和第二相对的曲线段表示。 第一曲线段比第二曲线段更靠近火花塞。 第一曲线段具有5至20mm的曲率半径。
    • 4. 发明授权
    • Double overhead camshaft engine
    • 双顶置凸轮轴发动机
    • US4951623A
    • 1990-08-28
    • US397854
    • 1989-08-24
    • Nobuhisa JinguYoshio Iwasa
    • Nobuhisa JinguYoshio Iwasa
    • F02B67/06F01L1/02F02B1/04F02B77/00F02F1/24F02F1/42F02F7/00F16M1/026
    • F01L1/02F01L1/022F02F1/4214F01L2001/0537F02B1/04F02B2275/08F02B2275/18F02F2001/245F02F7/006
    • A double overhead camshaft engine having two camshafts rotatably supported by a cylinder head. This two camshafts are drivably connected through an idler gear with a crankshaft of the engine by means of drive chains. The idler gear is rotatably mounted on an idler gear installation bolt which is fixedly secured only to a front end section of the cylinder head in a so-called cantilever arrangement. A surrounding wall structure for the idler gear is formed integral with the front end section of the cylinder head and extends in the direction of axis of the idler gear over the idler gear to form a front end section. An opening is formed at the surrounding wall structrure front end section and located on an opposite side of the cylinder head front end section with respect to the idler gear. The opening is closed with a cover which is disposed spaced from the idler gear installation bolt, so that no connection is made to the idler gear and the installation bolt therefor.
    • 具有由气缸盖可旋转地支撑的两个凸轮轴的双顶置凸轮轴发动机。 这两个凸轮轴通过传动链通过惰轮与发动机的曲轴可驱动连接。 空转齿轮可旋转地安装在惰轮安装螺栓上,该惰轮安装螺栓以所谓的悬臂装置固定地固定在气缸盖的前端部分上。 空转齿轮的周围壁结构与气缸盖的前端部一体地形成,并且在空转齿轮的轴线方向上延伸到空转齿轮上,形成前端部。 在周围的壁结构前端部形成开口,并且相对于空转齿轮位于气缸盖前端部的相对侧。 开口用与惰轮安装螺栓间隔开的盖子封闭,使得不与空转齿轮及其安装螺栓连接。