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

Syntax and variable matlab, Syntax and variable in matlab The MATLAB ap...

Syntax and variable in matlab The MATLAB application is designed around the MATLAB terminology. The easiest method to perform MATLAB value is to type it in the Control Screen,

Introduction to Corporate Finance, Calculatethe tax disadvantage to organiz...

Calculatethe tax disadvantage to organizing a U.S. business today, after passage of the Jobs and growth Tax relief reconciliation act of 2003, as a corporation versus a partnership

Aircraft Propulsion, An aircraft is flying at a speed of 500 ft/s an altitu...

An aircraft is flying at a speed of 500 ft/s an altitude of 20,000 ft, where the atmospheric temperature and pressure are 447.3°R and 972.5 lbf/ft2, respectively. If the inlet / di

Manual override relays, Manual override relays: When the manual-overrid...

Manual override relays: When the manual-override relays are not energised, this current flows through brushes riding on slip rings mounted on the propeller spinner bulkhead and

Engineering signals, Engineering Signals A signal is a variation of a m...

Engineering Signals A signal is a variation of a measurable quantity that conveys information about the behaviour of a system. • A signal can depend upon a single variable o

Four stroke diesel engine, FOUR STROKE DIESEL ENGINE: T he cycle of ev...

FOUR STROKE DIESEL ENGINE: T he cycle of events that takes place in a four -stroke diesel engine has been shown. Unlike the petrol which drawn in a mixture of air and petrol,

Longitudinal trim, A trimmed flight condition is perhaps best thought of as...

A trimmed flight condition is perhaps best thought of as an equilibrium condition. The simplest trim condition is straight-and-level flight, in which the forces (weight, propulsive

LIBS, Laser induced breakdown spectroscopy

Laser induced breakdown spectroscopy

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