公开(公告)号：US10072540B2

公开(公告)日：2018-09-11

申请号：US15031718

申请日：2014-10-07

Applicant: YANMAR CO., LTD.

Inventor： Hitoshi Koyama

IPC: F01L1/34 ,  F01L13/00 ,  F01L1/14 ,  F01L1/18 ,  F01L1/053 ,  F01L1/047

CPC classification number: F01L13/0063 ,  F01L1/053 ,  F01L1/146 ,  F01L1/181 ,  F01L13/0026 ,  F01L2001/054 ,  F01L2105/00 ,  F01L2800/09 ,  F01L2820/031 ,  F01L2820/032 ,  F01L2820/033

Abstract: A variable valve timing system includes an exhaust swing arm swung in accordance with rotation of a camshaft, an intake swing arm similarly swung in accordance with the rotation of the camshaft, and a swing shaft swingably supporting the exhaust swing arm and the intake swing arm. In an engine including a plurality of the variable valve timing systems, the adjacent swing shafts are coupled to each other. The engine includes a link mechanism connected to one of the swing shafts, and an actuator for moving the link mechanism. The actuator controls turning angles of all the swing shafts via the link mechanism.