Question 209Motor Plants - 1st Asst/Chief70% to pass
What is the best way of stopping an overspeeding diesel engine?
AI Explanation
The correct answer is D) Secure the fuel supply and block the air intake.
To stop an overspeeding diesel engine, the best approach is to cut off both the fuel supply and the air intake. This is because a diesel engine requires a specific air-fuel mixture to operate. By securing the fuel supply and blocking the air intake, you effectively starve the engine of the necessary components to continue running, which will cause it to stall and stop.
The other options are not as effective. Disconnecting the battery cables from the starting motor (A) would not stop a runaway engine, as the engine is already running. Draining the hydraulic fluid from the governor sump (B) would not directly address the issue of overspeeding. Blocking the flow of cooling air to the radiator (C) may eventually cause the engine to overheat, but it would not immediately stop the overspeeding.
Related Questions
#207 Following the failure of one turbocharger on a large, crosshead, main propulsion diesel engine, fitted with multiple turbochargers, which of the following actions should be taken prior to further operation of the engine? #208 If a tube ruptures in a water-tube auxiliary boiler due to low water, you should_______________.#210 If a crankcase explosion due to a hot spot were to occur, the size of the explosion is dependent on which of the following? #211 Which of the following oil mist to air ratios would most likely lead to the most severe crankcase explosion? #212 In the event of a crankcase rich oil mist to air mixture explosion, where the doors are blown off the engine, which of the following may occur after the initial explosion?