System and method for engine valve lash calibration

A system for adjusting a valve lash in an internal combustion engine, comprising:

• at least one processor;
• and
• at least one non-transitory computer readable medium storing instructions which, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• 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;
• automatically determining an adjusted amount of lash associated with the valve based on the received first signal and the received second signal;
• 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,
• wherein comparing the adjusted amount of lash comprises comparing the adjusted amount of lash to a first predetermined threshold and a second predetermined threshold, wherein the first predetermined threshold corresponds to a need to correct the adjusted valve lash, and the second predetermined threshold corresponds to a need to discontinue operation of the internal combustion engine.

A method for calibrating a valve lash in an internal combustion engine, the method comprising:

• receiving a first signal indicative of a closing of a valve of the internal combustion engine following an adjustment in an amount of the valve lash in the internal combustion engine;
• 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;
• determining a magnitude of the adjusted amount of valve lash based on at least the received first signal and the received second signal;
• comparing the magnitude of the adjusted amount of valve lash to a lash adjustment map;
• and
• transmitting, based on the comparison between the magnitude of the adjusted amount of valve lash and the lash adjustment map, a valve lash re-adjustment notification,
• wherein the lash adjustment map includes at least a first predetermined threshold and a second predetermined threshold, wherein the first predetermined threshold corresponds to a need to modify the adjusted valve lash, and the second predetermined threshold corresponds to a need to discontinue operation of the internal combustion engine.