The hunting of a diesel engine may be caused...

🔍 Key Concepts

• hunting in a diesel engine governor means the engine speed is repeatedly overshooting and undershooting the set speed • speed droop is how much the engine speed is allowed to fall as load increases before the governor adds more fuel • the effect of governor sensitivity on stability vs. responsiveness

💭 Think About

• Think about what would make the governor continually over-correct, causing the engine speed to oscillate around the set point instead of settling • Ask yourself: would a very large droop or a very small droop make the engine more likely to surge up and down in speed? • Consider how a governor that reacts too strongly or too weakly to small speed changes will affect stability

✅ Before You Answer

• Make sure you understand whether hunting is related to instability (oscillation) or slow response • Compare which options would cause over-correction versus under‑correction by the governor • Eliminate any choice that would tend to make the governor slow but stable, rather than fast and unstable

The hunting of a diesel engine may be caused by __________.

excessive speed droop

insufficient speed droop

excessive sensitivity

low governor power