In order to start a large, low-speed, main...

Question 1 / 270705eccefa2bacbc34ba4d477ac

Question 1 of 270705eccefa2bacbc34ba4d477ac

In order to start a large, low-speed, main propulsion diesel engine on high viscosity fuel after an extended shutdown, the __________.

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Question 1 of 27070

In order to start a large, low-speed, main propulsion diesel engine on high viscosity fuel after an extended shutdown, the __________.

🔍 Key Concepts

• High viscosity fuel behavior at low vs. high temperature • Requirements for starting a large, low-speed diesel after a long shutdown • Difference between fuel heating, intake air heating, and lube oil temperature adjustments

💭 Think About

• What happens to high viscosity fuel inside pipes, pumps, and injectors if it is cold and the engine has been shut down for a long time? • Which of the listed actions will most directly help the fuel reach and pass through the injection system properly during starting? • Which options are more related to combustion efficiency after running, rather than to overcoming fuel flow problems at start-up?

✅ Before You Answer

• Verify which system is most affected by fuel viscosity: fuel system, air system, or lube oil system • Consider standard shipboard practice for operating heavy fuel oil (HFO) or other high viscosity fuels in large slow-speed diesels • Check which option is a common procedural step in engine start-up checklists for engines burning heavy fuel oil

Question 1 of 27070

In order to start a large, low-speed, main propulsion diesel engine on high viscosity fuel after an extended shutdown, the __________.

fuel must be preheated

intake air should be preheated

lube oil outlet temperature should be increased 20° above normal

none of the above

Question 1 / 270705eccefa2bacbc34ba4d477ac

Question 1 of 270705eccefa2bacbc34ba4d477ac

In order to start a large, low-speed, main propulsion diesel engine on high viscosity fuel after an extended shutdown, the __________.

Back

Question 1 of 27070

In order to start a large, low-speed, main propulsion diesel engine on high viscosity fuel after an extended shutdown, the __________.