To function properly, oil control rings used on a diesel engine piston must distribute sufficient oil to all parts of the cylinder wall and must also __________.
• Function of oil control rings on a diesel piston • Difference between oil control rings vs compression rings • Why too much oil in the combustion space is dangerous (carbon, fouling, detonation)
• Think about what happens if the oil control rings allow too much oil to move upward toward the combustion space. • Consider what the primary job of the oil control ring is compared with the job of the compression rings. • Which option best describes controlling oil, not sealing compression or cleaning carbon?
• Identify which choice focuses on controlling the amount and destination of oil, not gas sealing. • Eliminate any option that confuses the job of compression rings with oil control rings. • Ask: which result (from the choices) is most directly related to preventing oil burning, fouling, and carbon buildup in the combustion space?
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