Question

What is the function of piston rings in an internal combustion engine?

A Control the cylinder lubrication Correct Answer Incorrect Answer
B Transmit heat away from the piston Correct Answer Incorrect Answer
C Form a gas-tight combustion chamber Correct Answer Incorrect Answer
D Reduce contact area between cylinder and piston Correct Answer Incorrect Answer

Solution

Piston rings reduce the contact area between the cylinder and piston, preventing excessive wear and controlling cylinder lubrication.

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