When using a dynamometer to break in a set of piston rings on a rebuilt diesel engine, what is the minimum period the engine should be run at maximum power at rpms within its torque rise profile?
A) five minutes
B) ten minutes
C) twenty minutes
D) forty minutes

Question

Quizplus · Accepted Answer

Running the engine at maximum power within its torque rise profile for twenty minutes is essential for properly seating the piston rings during the break-in process. This duration allows the rings to properly mate with the cylinder walls, ensuring a good seal and optimal engine performance.

When Using a Dynamometer to Break in a Set of Piston