Question 139Motor Plants - QMED70% to pass
The power output of a turbocharged diesel engine will drop if the cooling water flow through the aftercooler is interrupted because the _______________.
AI Explanation
The correct answer is C) air charge density decreases.
When the cooling water flow through the aftercooler is interrupted, the air charge density decreases. The aftercooler is used to cool the compressed air from the turbocharger before it enters the engine. If the cooling water flow is interrupted, the air charge will not be adequately cooled, resulting in a lower air density. This lower air density leads to a decrease in the power output of the turbocharged diesel engine.
The other options are incorrect because: A) the turbocharger does not stall, B) the exhaust pressure does not increase, and D) the scavenge effect does not increase when the aftercooler cooling water flow is interrupted.
Related Questions
#137 Which of the terms listed below represents the operational speed at which excessive engine vibration is created? #138 Which of the following conditions is indicated by the presence of water in the scavenging air receiver? #140 An operating diesel engine that suddenly loses power, is due to a/an_______________. #141 A sudden power loss from a turbocharged and aftercooled diesel engine is an indication of a/an _______________.#142 Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the _______________.