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

Router, how does the Ip message finally reassemble?

how does the Ip message finally reassemble?

What is the internal rate of return (irr) of eurekaforbes?, What is the int...

What is the internal rate of return (IRR) of eurekaforbes? Inner Amount of Come back is that rate of Come back at which the net provide value is similar to Zero or it is the Amo

Thermodynamics of materials, outline five (5) areas where thermodynamics ca...

outline five (5) areas where thermodynamics can be applied in materials engineering

Aero Performance Problem, Given data for an F-4 (W=40000 lb, S=530 ft^2, Ta...

Given data for an F-4 (W=40000 lb, S=530 ft^2, Ta@sea level=35800 lb, Mach=1.5, h=20000 ft (std day), Cd0=.0224, k=.1516) find aircraft''s specific excess power in straight-and-lev

Airflow control system principles-aircraft engine, Airflow control system p...

Airflow control system principles: For any given engine there is only one set of conditions, mass flow, pressure ratio and rpm, at which all the compressor components are opera

Engineering economic analysis definition, Introduction Engineering Econ...

Introduction Engineering Economic Analysis Definition: using a combination of quantitative and qualitative techniques to analyze economic differences among engineering design a

Design of a fermenter, I have a fermenter case study which needs to be comp...

I have a fermenter case study which needs to be completed in the next 16 hours.

Engineering economices, 2. A contractor has both a 3-cy and a 5-cy shovel i...

2. A contractor has both a 3-cy and a 5-cy shovel in the equipment fleet. Select the minimum size shovel that will excavate 400,000bcy of common earth in a minimum of 130 working d

Engineering physics, when same music is played in veena and violin , we sha...

when same music is played in veena and violin , we shall hear the sound of

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