Electro-mechanical fuel control, Other Engineering

Assignment Help:

Electro-mechanical fuel control:

The start fuel valve and ignition are energised as soon as rotation (3%) is sensed by an Electronic Sequence Unit (ESU). At 14% and with rising EGT the main fuel valve is opened. The acceleration rate is controlled by the acceleration schedule adjuster, however this is modified by the differential pressure regulator which uses compressor discharge pressure to vary the fuel flow to the engine. At 50% the starter cuts out. When the engine reaches 85% the start fuel valve closes and the ignition is de-energised. The engine governor then takes over and controls the engine to 100%. As the engine passes 95% plus 3 seconds, the max fuel valve energises open and bypasses the acceleration adjuster and full control of the engine is given to the governor. If the engine is shut down both the Main and Max fuel valves are closed.

418_Electro-mechanical fuel control.png

The ESU has indicators that indicate which step of the start sequence the APU is at and the resets at 95% + 3sec to act as BITE indicators.

 


Related Discussions:- Electro-mechanical fuel control

Directional solidification, Q. What do you understand by directional solidi...

Q. What do you understand by directional solidification? What is gating system? Describe, giving sketches, various types of gates. What are the advantages and disadvantages of pres

Barometric lag, My question is that i am working in a petrochemical plant w...

My question is that i am working in a petrochemical plant where in final stage disc ring reactor the barometric lag is chocked completely the system is under vacuum if i introduce

Hardness of water, why is only 1 lime and sod required for aluminium impuri...

why is only 1 lime and sod required for aluminium impurities

Isdn, Explain the meaning of numbering and addressing in ISDN network.

Explain the meaning of numbering and addressing in ISDN network.

Water, Ask Hardness of bore well water is less than sea water - justify

Ask Hardness of bore well water is less than sea water - justify

Function ismember - set operations, function ismember - set operations: ...

function ismember - set operations: The function ismember receives two vectors as input arguments, and returns a logical vector which is of similar length as the first argumen

Aircraft radio installation licence and approval, AIRCRAFT RADIO INSTALLATI...

AIRCRAFT RADIO INSTALLATION (STATION) LICENCE AND APPROVAL 1. A radio installation licence is issued by the Department of Trade and Industry Radio Communications Agency , fo

Homework, Please explain how risk is taken into account for a financial ins...

Please explain how risk is taken into account for a financial instrument

Thermodynamics.., Steam enters in the turbine at 6 MPa and 450 deg C and ex...

Steam enters in the turbine at 6 MPa and 450 deg C and expands at some intermediate pressure 60 % of steam is extracted and remainder expands to 10 kPa at this Investigate the effe

.quantifying financial risk, What is the standard deviation of return if we...

What is the standard deviation of return if we have the following two possible outcomes: a rise of 8.00 per cent with 0.58 probability or a fall of -6.00 per cent?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd