Invention Grant
- Patent Title: System and method for engine valve lash calibration
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Application No.: US16894357Application Date: 2020-06-05
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Publication No.: US11268411B2Publication Date: 2022-03-08
- Inventor: Yifeng Lu , Yanchai Zhang , Zhaoxu Dong , Nathan S. Pauli , Xuefei Hu , Purna C. Nalla , Brian W. Young , James D. Siegle
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Bookoff McAndrews PLLC
- Main IPC: F01L1/22
- 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.
Public/Granted literature
- US20210381401A1 SYSTEM AND METHOD FOR ENGINE VALVE LASH CALIBRATION Public/Granted day:2021-12-09
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