Systems, methods, and devices for rocker arm position sensing

A system for monitoring operation of an internal combustion engine, comprising:

• a rocker arm assembly for actuating an engine valve, the rocker arm assembly further comprising:
• a first arm having a first end and a second end;
• at least one slider pad, wherein the at least one slider pad is connected to the first arm near the second end of the first arm;
• a second arm having a first end, the second arm pivotally connected near the first end of the first arm along a pivot axle;
• a latch that when latched secures the first arm relative to the second arm in a latched mode, and when unlatched allows the first arm to move relative to the second arm in an unlatched mode;
• and
• a sensor positioned in proximity to the second end of the first arm, the sensor adapted to detect motion of the first arm and the second arm relative to each other, and further adapted to provide a signal indicating the detected motion.