What Is This Engine Sense Line Component — Tech Ops Forum

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What Is This Engine Sense Line Component

dhawald3 From India, joined Jun 2011, 17 posts, RR: 0
Posted (4 months 3 weeks 1 day 15 hours ago) and read 1848 times:

Hi,

This is the picture of a component in the stage 12.5 pressure sense line that goes in the EEC.
It is of the IAE V2527 engine

They can also be found in other sense lines as well.

What is the purpose of it and how does it work??

2 replies: All unread, jump to last

tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 81
Reply 1, posted (4 months 3 weeks 1 day 14 hours ago) and read 1829 times:

Quoting dhawald3 (Thread starter):
What is the purpose of it and how does it work??

The sense line is just a tube; it is a pressure tap that connects some point within the engine (in this case, between the 12th and 13th compressor stages) to a pressure transducer in the EEC. These lines provide all the primary pressure data to the EEC.

The blocky thing in the middle of the shot is probably a moisture trap; when you take the hot engine air out to the outside of the engine case you can sometimes get condensation. This can block the tube so they will usually have collection points at the low spots in the lines. Based on the look of it, it might also be some kind of damper/accumulator to even out pressure pulses.

Tom.

CALTECH From Poland, joined May 2007, 1575 posts, RR: 23
Reply 2, posted (4 months 3 days 6 hours ago) and read 1145 times:

Quoting tdscanuck (Reply 1):
The sense line is just a tube; it is a pressure tap that connects some point within the engine (in this case, between the 12th and 13th compressor stages) to a pressure transducer in the EEC. These lines provide all the primary pressure data to the EEC.

Incorrect. It is the P12.5 Fan Exit Pressure, not a tap between the 12th and 13th compressor stages.It is a option on the V2500 engine. It gives a better analysis of the Engine Condition. As Tom states, that rectangular component, is probably a moisture trap/check valve type component. Will see if a better description is out there.

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