Question 413Motor Plants - Assistant Engineer
70% to passExcessive side clearance between a piston ring and its groove will cause the ring to_______________.
Aexpand excessively under operating temperatures
Bscuff the cylinder liner excessively
Chammer the piston land above the ring
Dhammer the piston land below the ring
AI Explanation
The correct answer is D) hammer the piston land below the ring. Excessive side clearance between a piston ring and its groove allows the ring to move up and down within the groove. This can cause the ring to hammer the piston land below the ring, which can lead to damage and wear on that part of the piston. The other options are incorrect because: A) ring expansion is caused by heat, not side clearance; B) scuffing of the cylinder liner is caused by tight ring fit, not excessive clearance; and C) hammering the land above the ring is not a consequence of excessive side clearance.
Related Questions
Q397:The direct acting mechanical governor used with some small diesel engines, contr... Q137:Which letter represents the top deck (valve) cover of the engine shown in the il... Q187:In a direct cylinder admission air starting system, once the engine begins to fi... Q383:Air scavenging of the cylinder shown in the illustration begins between figures_... Q487:Before being shut down, a diesel engine should idle a few minutes in order to___...
Ready to test your knowledge?
Take a Motor Plants - Assistant Engineer Practice ExamOfficial Resources