What is the best way of stopping an...

Question 1 / 270705eccefa3bacbc34ba4d47e1c

Question 1 of 270705eccefa3bacbc34ba4d47e1c

What is the best way of stopping an overspeeding diesel engine?

Question 1 of 27070

What is the best way of stopping an overspeeding diesel engine?

🔍 Key Concepts

• Diesel engine runaway / overspeed – what physically keeps the engine turning faster and faster? • How fuel supply and air supply affect combustion in a diesel engine. • Difference between electrical starting system and what keeps the engine running once it’s already started.

💭 Think About

• Once a diesel engine is overspeeding, what two things must be controlled to actually stop combustion inside the cylinders? • Would removing electrical power to the starter motor affect an engine that is already running at high speed on its own? Why or why not? • If the governor has already failed, which action will still reliably stop the engine’s power production the quickest?

✅ Before You Answer

• Identify which choice actually stops combustion in the cylinders, rather than just affecting accessories or cooling. • Check which option works even if the governor or controls have failed. • Ask: which option removes what the engine absolutely must have to keep running – fuel and/or air?

Question 1 of 27070

What is the best way of stopping an overspeeding diesel engine?

Disconnect the battery cables from the starting motor.

Drain the hydraulic fluid from the governor sump.

Secure the fuel supply and block the air intake.

Block the flow of cooling air to the radiator.

Question 1 / 270705eccefa3bacbc34ba4d47e1c

Question 1 of 270705eccefa3bacbc34ba4d47e1c

What is the best way of stopping an overspeeding diesel engine?

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Question 1 of 27070

What is the best way of stopping an overspeeding diesel engine?