Questions tagged [egt]

Exhaust Gas Temperature (EGT) is used to monitor the health of an aircraft engine.

Filter by
Sorted by
Tagged with
7 votes
1 answer
905 views

Why was my Exhaust Gas Temperature considerably lower than usual?

I have been trying to understand the exact details of an EGT gauge, specifically to understand why on a recent flight it was (for a short time) reading much lower than I would have expected. I would ...
  • 27.1k
3 votes
1 answer
646 views

On the G1000 lean assist page, what does a positive delta EGT mean?

When leaning the fuel mixture on a C172 using the lean assist feature on the G1000, the hottest cylinder's EGT will be displayed, along with a reading showing the difference between the current ...
  • 587
4 votes
2 answers
1k views

What does "time at temperature" mean in the maintenance manual of the J79 engine?

I was reading the maintenance manual of the General Electric J79 and saw these two charts: and What does "time at temperature" mean?
  • 3,187
8 votes
2 answers
4k views

Why doesn't the 737 MAX have an APU EGT gauge like all other 737s do?

On Original, Classic, and Next Generation 737s, the APU panel has an EGT (exhaust-gas temperature) gauge below the four APU caution/warning lights (all images in this question are from the 737 ...
  • 26.5k
4 votes
1 answer
630 views

Why does the 737NG EGT drop during take-off?

I noticed that the EGT drops a bit when I hit TO/GA for take-off on a 737-800.
1 vote
3 answers
312 views

How to apply the TO/GA time and EGT limits?

If there is a published 1) EGT limit and a 2) TO/GA time limit, which one should be applied when the EGT is well below the EGT limit and possibly even below the 'max continuous' EGT. Particularly with ...
0 votes
0 answers
29 views

how to simulate the performance parameters wand EGT parameter?where can i get the data? [duplicate]

I went through a lot of research papers and (kind of) understood the parameters needed for Engine Condition Trend Monitoring. From what I've understood, I need N1speed,N2 speed, Pitch, AOA, Exhaust ...
1 vote
1 answer
2k views

What is the relationship between EGT, Fuel Flow, N1, N2 and Air Temperature?

I initially wanted some sample data for EGT, Fuel Flow, N1 and N2 to build a prognosis system that predicts engine failure (ECTM). I searched for some sample data online but got to know that there's ...
5 votes
1 answer
285 views

Why is EGT decreasing on a jet engine when the generators cut in (take over)?

Is the EGT decrease related to the generators cutting in or is it related to the fact that the fan is now providing enough ventilation air for the engine? When I say cut in I mean that the engine ...
  • 1,422
7 votes
2 answers
16k views

What is the difference between EGT and TIT?

In a gas turbine engine, what is the difference between Exhaust Gas Temperature (EGT) and Turbine Inlet Temperature (TIT)? I assume EGT is the temperature after the gas has transferred power to the ...
1 vote
2 answers
274 views

What happens in a turbine high-temp combustion?

I'm designing an aircraft, and I notice that in high bypass turbofan engines, the fuel is used at relatively low temperatures. So I'm wondering, what happens if the fuel is burned at high temperatures?...
  • 668
11 votes
1 answer
30k views

What appears on EGT Gauge if the mixture is rich or lean?

I have some questions on interpreting Exhaust Gas Temperature (EGT) readings. Can you give me some input on: What appears on EGT Gauge if the mixture is lean or rich? what is the normal range, ...
1 vote
1 answer
960 views

How does EGT work? [closed]

I am making a report and how does EGT of an aircraft, either turbo or piston engine, work? Can you please give me the procedures... Like where it starts and being transferred to where and stuff. Thank ...
10 votes
2 answers
29k views

What is a normal EGT range of a jet engine?

Out of curiosity at what temperatures are the exhaust gasses are expelled from jet engines? A normal reciprocating engine from what I recall should be in the 700 - 1100 degrees Celsius range. Does ...