公开(公告)号：US20240209758A1

公开(公告)日：2024-06-27

申请号：US18557150

申请日：2022-04-26

Applicant: Eaton Intelligent Power Limited

Inventor： Long WANG ,  Nicola ANDRISANI

IPC: F01L1/18 ,  F01L1/053 ,  F01L1/22 ,  F01L1/26 ,  F01L1/46 ,  F01L13/06

CPC classification number: F01L1/18 ,  F01L1/053 ,  F01L1/22 ,  F01L1/26 ,  F01L1/46 ,  F01L13/06

Abstract: A combined exhaust and engine brake rocker arm assembly (20) configured to selectively open first and second exhaust valves (26, 28) includes a rocker arm body (40), an exhaust rocker arm assembly (16) formed in the rocker arm body (40), and a lost motion spigot assembly (56) including an adjustment nut (70) and guide (62) configured to receive a shaft assembly (60) for adjusting a lash of the lost motion spigot assembly (56). The shaft assembly is disposed within a bore (92) of the adjustment nut below an upper surface thereof, and an engine brake rocker arm assembly (18) is formed in the rocker arm body (40) and configured to operate in a collapse mode and a rigid mode. The lost motion spigot assembly (56) is configured to selectively engage a valve bridge (52) to open the first and second exhaust valves (26, 28), and the engine brake rocker arm assembly (18) is configured to selectively engage the valve bridge (52) to open only the first exhaust valve (26).