公开(公告)号：US11891923B2

公开(公告)日：2024-02-06

申请号：US17638844

申请日：2020-09-10

Applicant: Eaton Intelligent Power Limited

Inventor： Adam Boden ,  Anthony Leon Spoor

IPC: F01L1/18 ,  F01L9/26 ,  F01L13/00 ,  F01L13/06

CPC classification number: F01L1/181 ,  F01L9/26 ,  F01L13/0005 ,  F01L13/06 ,  F01L2013/001 ,  F01L2305/00

Abstract: A valvetrain for an internal combustion engine includes a camshaft, an electromagnetic latch assembly, a rocker shaft, and a rocker arm assembly. The rocker arm assembly may include a cam follower configured to engage a cam mounted on the camshaft as the camshaft rotates and a rocker arm configured to rotate on the rocker shaft. The electromagnetic latch assembly may include a pin translatable between a first position and a second position and an electromagnet that causes the pin to actuate. The movement of the pin may provide mode switching for a switching rocker arm, a cylinder deactivating rocker arm, or an engine brake rocker arm. The electromagnet is powered by a circuit that passes through the rocker shaft. The electromagnet may be mounted to the rocker shaft. Running the circuit through the rocker shaft allows the electromagnet to be powered with wiring that remains stationary.

公开(公告)号：US20220333507A1

公开(公告)日：2022-10-20

申请号：US17638844

申请日：2020-09-10

Applicant: Eaton Intelligent Power Limited

Inventor： Adam Boden ,  Anthony Leon Spoor

IPC: F01L1/18 ,  F01L13/00 ,  F01L9/26 ,  F01L13/06

Abstract: A valvetrain for an internal combustion engine includes a camshaft, an electromagnetic latch assembly, a rocker shaft, and a rocker arm assembly. The rocker arm assembly may include a cam follower configured to engage a cam mounted on the camshaft as the camshaft rotates and a rocker arm configured to rotate on the rocker shaft. The electromagnetic latch assembly may include a pin translatable between a first position and a second position and an electromagnet that causes the pin to actuate. The movement of the pin may provide mode switching for a switching rocker arm, a cylinder deactivating rocker arm, or an engine brake rocker arm. The electromagnet is powered by a circuit that passes through the rocker shaft. The electromagnet may be mounted to the rocker shaft. Running the circuit through the rocker shaft allows the electromagnet to be powered with wiring that remains stationary.