Variable cam timing system and method for operation of said system

    公开(公告)号:US10329966B1

    公开(公告)日:2019-06-25

    申请号:US15849287

    申请日:2017-12-20

    IPC分类号: F01L1/344 F01L1/02

    摘要: A variable cam timing system in an engine is provided. The variable cam timing system includes a camshaft receiving rotational input from a crankshaft. The camshaft includes a valve cam rotationally actuating a valve coupled to a cylinder and a null cam actuating a null follower including a null spring exerting a return force on the null cam during interaction between the null cam and the null follower, where the null follower is independent from the cylinder.