Method for the monitoring of a degree of coking at seals by a gas generator shaft
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United States of America Patent
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Oct 23, 2018
Grant Date -
Aug 4, 2016
app pub date -
Sep 11, 2014
filing date -
Sep 13, 2013
priority date (Note) -
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Abstract
The invention relates to a method (1000) for monitoring a degree of coking at dynamic seals of a turbine engine comprising: a gas generator including a rotary shaft and an injection wheel mounted on the shaft; a fuel injection manifold designed to convey fuel to the injection wheel; and dynamic seals designed to provide a seal between the injection wheel and the fuel injection manifold. The method is characterised in that it comprises steps consisting in: measuring (1100) the rotation speed of the gas generator shaft during a turbine engine autorotation phase, and determining (1200) a degree of coking at the dynamic seals, based on changes in the measured rotation speed over time. The invention also relates to a turbine engine equipped with a monitoring system.
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