公开(公告)号：US20080035086A1

公开(公告)日：2008-02-14

申请号：US11808724

申请日：2007-06-12

申请人： Masahiko Tashiro ,  Akiyuki Yonekawa

发明人： Masahiko Tashiro ,  Akiyuki Yonekawa

IPC分类号： F01L1/34

CPC分类号： F01L1/08 ,  F01L1/185 ,  F01L1/24 ,  F01L1/26 ,  F01L1/267 ,  F01L13/0021 ,  F01L13/0026 ,  F01L13/0063 ,  F01L2013/0068 ,  F01L2105/00 ,  F01L2820/01

摘要： A lift-variable valve-operating system for an internal combustion engine, comprising: subsidiary cams which are swingably supported on a movable support shaft capable of being displaced within a plane perpendicular to a rotational axis of a valve-operating cam, and which are swung following the valve-operating cam; and rocker arms each operatively connected to an engine valve and operated following the subsidiary cams, operating characteristics including a lift amount of the engine valve being changed by displacing the movable support shaft, wherein the system further includes a control arm carried in an engine body to be capable of turning about a turning axis parallel to a rotational axis of the valve-operating cam, wherein the movable support shaft having an axis parallel to the turning axis of the control arm is retained on the control arm at a location offset from the turning axis, wherein a hydraulic tappet is mounted in the control arm to support one end of each of the rocker arms, and wherein a valve abutment portion provided at the other end of each of the rocker arms is in abutment against an upper end of a stem of the engine valve. Thus, it is possible to enhance the control accuracy in a state in which the lift amount of the engine valve is controlled to be low.

公开(公告)号：US07252058B2

公开(公告)日：2007-08-07

申请号：US11405678

申请日：2006-04-18

申请人： Masahiko Tashiro

发明人： Masahiko Tashiro

IPC分类号： F01L1/34

CPC分类号： F01L13/0063 ,  F01L1/08 ,  F01L1/24 ,  F01L1/26 ,  F01L13/0021 ,  F01L13/0026 ,  F01L2013/0068 ,  Y10T74/2107

摘要： A lift-variable valve-operating system for an engine, includes a subsidiary cam swingably carried on a movable support shaft. A cam follower is operatively connected to an engine valve and follows the subsidiary cam. The lift amount of the engine valve is varied by displacing the movable support shaft. The subsidiary cam has an oil sump provided in an upper surface and opens upwards to store oil. The subsidiary cam is provided with an abutment face abutting against the cam follower. The abutment face includes a lift portion for turnably driving the cam follower; and a base circle portion connected to the lift portion and which retains the cam follower in a rest state. The subsidiary cam is also provided with a lubricating oil bore for guiding the oil in the oil sump to the base circle portion.

摘要翻译： 一种用于发动机的可变换阀操作系统，包括可摆动地承载在可移动支撑轴上的副凸轮。 凸轮随动件可操作地连接到发动机气门并跟随辅助凸轮。 发动机气门的升程量通过移动可动支承轴来改变。 辅助凸轮具有设置在上表面中并向上打开以储存油的油底壳。 辅助凸轮设置有抵靠凸轮从动件的抵接面。 抵靠面包括用于可转动地驱动凸轮从动件的提升部分; 以及连接到提升部分并且将凸轮从动件保持在静止状态的基圆部分。 辅助凸轮还设置有用于将油底壳中的油引导到基部圆圈部分的润滑油孔。

公开(公告)号：US07104231B2

公开(公告)日：2006-09-12

申请号：US11115250

申请日：2005-04-27

申请人： Masahiko Tashiro

发明人： Masahiko Tashiro

IPC分类号： F01L1/34

CPC分类号： F01L1/26 ,  F01L1/024 ,  F01L13/0021 ,  F01L13/0026 ,  F01L13/0063 ,  F01L2013/0068 ,  F01L2105/00

摘要： The valve train V of an internal combustion engine E includes; a rocker arm 50, 60 for opening and closing the suction valve 13; a holding body 70 for holding the spring 77 to generate the bias force F3 for biasing the rocker arm 50 to the suction cam 21; and a drive shaft 81 for moving the supporting shaft 32, 33 of the rocker arm 50, 60 via the holder 30. The rocker arm 50 includes: an acting section 54 on which the bias force F3 of the spring 77 directly acts; a cam contact section 52 coming into contact with the suction cam 21. The holding body 70 provided integrally with the holder 30 moves following a position of the supporting shaft 32 which moves together with the holder 30. The spring 77 is arranged between the holding body 70 and the acting section 54, which are opposed to each other in the direction of the line of action of the bias force F3 and along the plane perpendicular to the rotary centerline L2 of the cam shaft 20.

摘要翻译： 内燃机E的气门机构V包括： 用于打开和关闭吸入阀13的摇臂50,60; 用于保持弹簧77以产生用于将摇臂50偏压到吸入凸轮21的偏压力F 3的保持体70; 以及用于通过保持器30移动摇臂50,60的支撑轴32,33的驱动轴81。 摇臂50包括：弹簧77的偏置力F 3直接作用在其上的作用部分54; 与吸引凸轮21接触的凸轮接触部52。 与保持器30一体设置的保持体70随着与保持器30一起移动的支撑轴32的位置而移动。 弹簧77布置在保持体70和作用部分54之间，它们在偏置力F 3的作用线的方向上相对并且沿垂直于凸轮的旋转中心线L 2的平面相对 轴20。