Before shutting off the fuel supply to stop a medium or high- speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?

Question

Before shutting off the fuel supply to stop a medium or high- speed diesel engine, why is it necessary to allow the  engine to idle for a few minutes?

Accepted Answer

To prevent internal damage from local overheating.

Engine 2014: Motor Plants and Auxiliary Boilers

Before shutting off the fuel supply to stop a medium or high- speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?

More Motor Plants and Auxiliary Boilers questions