Question 12Motor Plants - 1st Asst/Chief70% to pass
The ring lands on a large, low-speed, main propulsion diesel engine piston may crack due to_______________.
AI Explanation
The correct answer is B) insufficient ring groove clearance.
Insufficient ring groove clearance can cause the piston ring to crack on a large, low-speed, main propulsion diesel engine. This is because the piston ring needs adequate clearance in the ring groove to allow for thermal expansion during engine operation. If the clearance is insufficient, the ring will be unable to expand freely, leading to high stresses and potential cracking.
The other answer choices are incorrect because: A) high main lubricating oil temperature would not directly cause ring cracking, C) insufficient cylinder liner wear is not a common cause of ring cracking, and D) contaminated lubricating oil would not directly lead to ring cracking in this type of engine.
Related Questions
#10 Which of the following procedures should be carried out to permit the continued operation of a crosshead engine with a leaky aftercooler? #11 A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will _______________.#13 One method of determining crankshaft misalignment is by_______________.#14 When inspecting pistons, liners, and rings of a large two-stroke cycle diesel engine through the cylinder ports, a wet piston crown would indicate a_______________.#15 The most practical way of detecting an overload in one cylinder of an operating large, low-speed, main propulsion diesel engine is to_______________.