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

Aeroengines - fluent problems, We are interested in the supersonic flow of...

We are interested in the supersonic flow of air through a convergent-divergent nozzle having a circular cross-sectional area, A, that varies with axial distance from the throat, x,

Mechanical pulverization, Mechanical pulverization method is applicable to...

Mechanical pulverization method is applicable to brittle metals like antimony. Many varieties of mechanical pulverizers are in use; some of these have counter rotating plates or r

Constant speeding propeller, Constant speeding propeller: The definitio...

Constant speeding propeller: The definition of a Constant Speeding propeller is 'A propeller, the pitch setting of which varies automatically to maintain a preselected constant

Harriman, HARRIMAN MANUFACTURING COMPANY Harriman Manufacturing Company i...

HARRIMAN MANUFACTURING COMPANY Harriman Manufacturing Company is evaluating the purchase of a new piece of equipment. The quoted price is $50,000, and it would cost Harriman anot

Slip and slip plane, Q. What is slip? What is slip plane? What are principa...

Q. What is slip? What is slip plane? What are principal if slip planes and slip direction for BCC, FCC and HCP crystal? Ans. X-ray diffraction studies show that the crystalli

Combustion section - aircraft engine, Combustion section: The combustio...

Combustion section: The combustion chamber has the difficult task of burning large quantities of fuel, supplied through the fuel burners, with extensive volumes of air, supplie

Dsd subject, give me basic programming of vhdl

give me basic programming of vhdl

Salvage value Terminal cash flows, Terminal cash flows Salvage value Sal...

Terminal cash flows Salvage value Salvage value (SV) is the most common example of terminal cash flows. Salvage value may be defined as the market price of an investment at the

Aviation legislation - registration of aircraft, Aviation legislation - REG...

Aviation legislation - REGISTRATION of AIRCRAFT: All aircraft must be registered in the U.K., before they are permitted to fly. They must also have their allotted registration

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