Method of cleaning coke from an engine component

Abstract

A method of cleaning coke from an engine component. The method includes providing the engine component including a flow passage having coke formed within the flow passage, performing a hot-fluid step including exposing the engine component to a hot fluid, performing a cold-fluid step including exposing the engine component to a cold fluid, and rinsing the engine component with a rinsing fluid. The cold fluid is colder than the hot fluid by a temperature differential to remove the coke from the engine component. The temperature differential is from ninety (90) degrees C. to five hundred fifty-six (556) degrees C.

Dependencies are inferred from the claim text.