公开(公告)号：US11268411B2

公开(公告)日：2022-03-08

申请号：US16894357

申请日：2020-06-05

Applicant: Caterpillar Inc.

Inventor： Yifeng Lu ,  Yanchai Zhang ,  Zhaoxu Dong ,  Nathan S. Pauli ,  Xuefei Hu ,  Purna C. Nalla ,  Brian W. Young ,  James D. Siegle

IPC: F01L1/22 ,  F02B77/08 ,  G07C5/08 ,  G07C5/00

Abstract: A method for adjusting a valve lash in an internal combustion engine includes receiving a first signal generated by a sensor secured to the internal combustion engine, the first signal being indicative of a closing of a valve, receiving a second signal indicative of at least one of an engine speed of the internal combustion engine or a position of a camshaft of the internal combustion engine, and automatically determining an adjusted amount of lash associated with the valve based on the received first signal and the received second signal. The method also includes comparing the adjusted amount of lash to at least one predetermined threshold, and providing, in response to determining that the adjusted amount of lash is greater than the at least one predetermined threshold, a valve lash re-adjustment notification.

公开(公告)号：US20210381401A1

公开(公告)日：2021-12-09

申请号：US16894357

申请日：2020-06-05

Applicant: Caterpillar Inc.

Inventor： Yifeng Lu ,  Yanchai Zhang ,  Zhaoxu Dong ,  Nathan S. Pauli ,  Xuefei Hu ,  Purna C. Nalla ,  Brian W. Young ,  James D. Siegle

IPC: F01L1/22 ,  G07C5/00 ,  G07C5/08 ,  F02B77/08

Abstract: A method for adjusting a valve lash in an internal combustion engine includes receiving a first signal generated by a sensor secured to the internal combustion engine, the first signal being indicative of a closing of a valve, receiving a second signal indicative of at least one of an engine speed of the internal combustion engine or a position of a camshaft of the internal combustion engine, and automatically determining an adjusted amount of lash associated with the valve based on the received first signal and the received second signal. The method also includes comparing the adjusted amount of lash to at least one predetermined threshold, and providing, in response to determining that the adjusted amount of lash is greater than the at least one predetermined threshold, a valve lash re-adjustment notification.