公开(公告)号：US06470841B2

公开(公告)日：2002-10-29

申请号：US09963794

申请日：2001-09-27

申请人： Atsushi Takahashi ,  Takaaki Harasaki ,  Masayasu Tajima ,  Chikara Tanaka ,  Takeya Harada ,  Noriyuki Yamada

发明人： Atsushi Takahashi ,  Takaaki Harasaki ,  Masayasu Tajima ,  Chikara Tanaka ,  Takeya Harada ,  Noriyuki Yamada

IPC分类号： F01M106

CPC分类号： F01L1/267 ,  F01L2105/00 ,  F01M9/105 ,  F01M9/107

摘要： The present invention provides a valve operating system for internal combustion engines, having a roller rolling contacting a valve operating cam, the system being provided with an oil supply passage capable of reducing a pressure loss to a low level even when a flow rate of lubricating oil entering the oil supply passage increases in accordance with a heightened engine speed, improving the lubricating ability with respect to the roller, and attaining a long lifetime of a rocker arm. This valve operating system includes a rocker arm support member provided with an oil passage in an inner portion thereof, a cam shaft provided on a valve operating cam, and a rocker arm which is provided with a roller rolling contacting the valve operating cam, and which is provided in an inner portion thereof with an oil supply passage for supplying a lubricating oil from the rocker arm support member to the roller, the sectional area of the flow passage of the oil supply passage increasing gradually from an opening thereof on the side of the roller toward an opening thereof on the side of the rocker arm support member.

摘要翻译： 本发明提供一种用于内燃机的阀操作系统，其具有与阀操作凸轮相接触的辊滚动，该系统设置有能够将压力损失降低到低水平的供油通道，即使当润滑油的流量 根据提高的发动机转速，进入供油通道增加，提高相对于辊的润滑能力，并且获得摇臂的长寿命。 该阀操作系统包括在其内部设置有油通道的摇臂支撑构件，设置在气门操作凸轮上的凸轮轴和设置有与阀操作凸轮接触的滚子的摇臂， 在其内部设置有用于将润滑油从摇臂支撑构件供给到辊的供油通道，供油通道的流路的截面积从其侧面的开口逐渐增加 在摇臂支撑构件的侧面上朝向其开口滚动。