Question 165Motor Plants - QMED70% to pass
In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in _______________.
AI Explanation
The correct answer is B) sulfuric acid corrosion.
When diesel engine exhaust gases are cooled below their dew point, the water vapor in the exhaust condenses. This condensate can then dissolve any sulfur compounds in the exhaust, forming sulfuric acid. The presence of this sulfuric acid can lead to corrosion in the exhaust system, which is the key reason why this is the correct answer.
The other options are incorrect because: A) increased back pressure is not a direct result of cooling the exhaust below the dew point, C) surface pitting of the turbocharger is not a typical effect of this phenomenon, and D) moisture impingement on the turbocharger blades is not the primary concern compared to the sulfuric acid corrosion.
Related Questions
#163 One of the factors limiting the amount of load which can be put on a modern marine diesel engine is the _______________.#164 The exhaust system for a turbocharged diesel engine functions to _______________.#166 The most common instrument used to measure diesel engine exhaust pressure is the _______________.#167 Exhaust pipes for separate main propulsion diesel engines can be combined only when _______________.#168 Which of the listed substances can be satisfactorily removed from diesel fuel by centrifuging?