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

Linear lateral dynamics, Linear lateral dynamics The second order (two ...

Linear lateral dynamics The second order (two degree of freedom) Dutch-Roll approximation is an approximation to the abovefourth order system for the Dutch Roll dynamics. A jus

Electrical ice protection systems, Electrical ice protection systems: E...

Electrical ice protection systems: Electrical ice protection systems are used on most turbo-props.  Resistance wire heater elements are embedded in rubber and cemented from the

An essay on power train, Interior noise is basically airborne or structure-...

Interior noise is basically airborne or structure-borne. The excitation sources of vibratation and noise from engines can be divided as mechanical, combustion, and flow sources.

Applications and demerits of electron microscope, Applications - (1)   ...

Applications - (1)          Electron microscopy is widely used in metallurgy, biology, material science, physics, chemistry, and many other technological fields. The developmen

Optimization, Wild west produces two types of cowboy hats. Type 1 hat requi...

Wild west produces two types of cowboy hats. Type 1 hat requires twice as much labor time as a type 2. If all the available labor time is dedicated to type 2 alone, the company can

Parasitic resistances, Parasitic resistances This is particularly notic...

Parasitic resistances This is particularly noticeable if the transducer is a long way from where the power supply is located and if the transducer resistance is small.

Validation, a web application using any technology that accepts an email ad...

a web application using any technology that accepts an email address and checks if the domain of the email address exists.

Tabular method, Ask question #Minimumsolve the following convolution in tab...

Ask question #Minimumsolve the following convolution in tabular form X(n)={1 2 -3 4 } h(n)={1 2 3 4 } 100 words accepted#

Organic, What happened when melonic acid heated

What happened when melonic acid heated

DSP HW1, With x[n] denoting the input signal and y[n] denoting the output s...

With x[n] denoting the input signal and y[n] denoting the output signal, give the difference equation relating the input signal to the output signal in the discrete-time domain, gi

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