公开(公告)号：US20180274478A1

公开(公告)日：2018-09-27

申请号：US15896246

申请日：2018-02-14

申请人： HONDA MOTOR CO., LTD.

发明人： Takeya Harada ,  Kiyohiko Masago ,  Masaru Kawano ,  Naoya Ashita ,  Kei Ueda ,  Koji Katsumata ,  Koichi Ogino ,  Hitoshi Ouchi

IPC分类号： F02F1/42 ,  F01L1/18 ,  F01L1/047 ,  F01L1/26 ,  F01L13/00

CPC分类号： F02F1/4214 ,  F01L1/026 ,  F01L1/047 ,  F01L1/053 ,  F01L1/182 ,  F01L1/185 ,  F01L1/2405 ,  F01L1/267 ,  F01L13/0021 ,  F01L13/0036 ,  F01L2001/0476 ,  F01L2001/0537 ,  F01L2001/054 ,  F01L2105/00 ,  F01L2810/04

摘要： A valve operating system for a multicylinder engine opens and closes a pair of valves provided on each of cylinders by means of a pair of rocker arms operated by a cam provided on a camshaft supported on a cam holder. When viewed in a direction of a cylinder axis, the pair of rocker aims of at least one of the cylinders are inclined in opposite directions to each other with respect to a direction orthogonal to a camshaft axis. Therefore, thrust loads acting on the camshaft from the pair of rocker al is are counteracted individually for each of the cylinders, thereby enabling the thrust load to be reduced and axial movement of the camshaft to be prevented.