Which rev limiter cuts out spark at specific points to hold the engine RPM?

Which rev limiter cuts out spark at specific points to hold the engine RPM?

• A. Spark Rev Limiter
• B. Stage Rev Limiter
• C. Fuel Rev Limiter
• D. Open Loop

Answer: (B)

Holding engine RPM at a precise value is achieved with a staged ignition-cut rev limiter. This type of limiter applies spark cut at specific, predefined RPM points to hold the engine at those points, rather than simply preventing RPM from climbing above a single ceiling. By firing and then interrupting ignition at those chosen moments, the engine reaches and stays at the target RPM in a controlled way. This contrasts with a spark rev limiter, which typically suppresses spark once you hit a single limit, causing a more general cut that can feel rough as soon as the limit is approached. A fuel rev limiter would cut fuel instead of spark, which changes torque differently and isn’t described as cutting spark at particular points. Open loop describes a mode of operation, not the method of limiting RPM.

Holding engine RPM at a precise value is achieved with a staged ignition-cut rev limiter. This type of limiter applies spark cut at specific, predefined RPM points to hold the engine at those points, rather than simply preventing RPM from climbing above a single ceiling. By firing and then interrupting ignition at those chosen moments, the engine reaches and stays at the target RPM in a controlled way.

This contrasts with a spark rev limiter, which typically suppresses spark once you hit a single limit, causing a more general cut that can feel rough as soon as the limit is approached. A fuel rev limiter would cut fuel instead of spark, which changes torque differently and isn’t described as cutting spark at particular points. Open loop describes a mode of operation, not the method of limiting RPM.