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

Cro, derive the expression of deflection of beam in CRO

derive the expression of deflection of beam in CRO

Java, 2. Differentiate between stream oriented and data gram oriented socke...

2. Differentiate between stream oriented and data gram oriented socket in java?

Calculate the relative load of mobile broadband subscribers, Question: ...

Question: (a) A mobile operator wants to weigh and allocate cost towards mobile broadband subscribers with mobile broadband at 80% of the traffic and 15% of the subscribers. H

Building economics, with sketches,describe single upper flows

with sketches,describe single upper flows

Trigonometry( bearings and rectilinear figures), a pilot entering a bay on ...

a pilot entering a bay on course 60.3 degrees at speed 12 miles per hour sees a light bearing 37.3 true and 20 minutes later he sees it bearing 20.0 degrees true. if he keeps the

Electrometallurgy, explain electrometallurgy for metal extraction process u...

explain electrometallurgy for metal extraction process using a schematic diagram

Mobile Communication, A car, moving in the south-east direction at a veloci...

A car, moving in the south-east direction at a velocity of 5 m/s, receives a ray of power of -120 dBm each from the north, east and west. The carrier frequency is 300 MHz. (i) Sket

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.

Pressure relief valve - aircraft engine, PRESSURE RELIEF VALVE The pres...

PRESSURE RELIEF VALVE The pressure relief valve shown in the figure. controls the oil pressure at the pre-set value demanded by the system. The valve is normally integral with

Re-heat nozzles in aircraft engine, Re-Heat Nozzles : If re-heat was fi...

Re-Heat Nozzles : If re-heat was fitted to an engine with a standard sized fixed area propelling nozzle, the expansion of gases caused by the use of re-heat would increase the

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