Telescopic pipes which are attached to water cooled pistons of large slow-speed main propulsion diesel engines are designed to __________ .

Question

Telescopic pipes which are attached to water cooled pistons of large slow-speed main propulsion diesel engines are designed to  __________ .

Accepted Answer

allow piston cooling water to efficiently enter the piston despite its reciprocating piston motion without contaminating the engine lube oil

Engine 2014: Motor Plants and Auxiliary Boilers