Speed indicator ring for Cummins engines

The speed indicator ring, part number 4916798, serves as a precision component within Cummins engines to monitor rotational speed. The ring interacts with a speed sensor, such as a Hall effect or inductive sensor, to generate pulses that the engine control unit interprets as revolutions per minute. This data is necessary for managing fuel injection, engine timing, and overall diagnostic functions.

This component is designed for use in Cummins engines found in heavy machinery, including cranes, excavators, and construction equipment. It is manufactured to precise tolerances to ensure the sensor receives a consistent signal for accurate RPM measurement. The specific design of the teeth or marks on the ring is required for the correct operation of the engine management system.

Speed indicator rings function by passing their teeth or markers past a sensor, creating a signal that corresponds to the crankshaft or camshaft position. This feedback allows the engine control unit to synchronize internal components and maintain operational parameters. Proper alignment and condition of the ring are necessary to prevent incorrect RPM readings, which can impact fuel efficiency and engine performance.