The method of piston cooling in which oil is delivered through the connecting rod to a compartment within the piston, then distributed by the motion of the pistons, and allowed to drain to the crankcase via one or more holes or pipes, is termed __________.
• Piston cooling methods in diesel engines and how oil is routed • The difference between internal oil compartments in the piston vs. oil sprayed on the underside of the crown • Typical engine terminology used to describe motion-based oil distribution
• Which term best describes oil that is carried inside the piston and moved around mainly by the piston's own motion? • Which option sounds more like oil being applied from the outside (such as through nozzles) rather than stored and sloshed inside a compartment? • Can any of the choices be eliminated because they do not describe a cooling method at all?
• Verify which term in the choices is actually recognized as a piston cooling system in marine diesel engines • Check whether the question describes oil stored and agitated inside the piston versus oil sprayed onto the piston from jets or nozzles • Eliminate any option that is clearly not standard technical terminology for a piston cooling method
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