Electro-mechanical fuel control, Other Engineering

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.

 

Posted Date: 9/12/2012 7:15:24 AM | Location : United States







Related Discussions:- Electro-mechanical fuel control, Assignment Help, Ask Question on Electro-mechanical fuel control, Get Answer, Expert's Help, Electro-mechanical fuel control Discussions

Write discussion on Electro-mechanical fuel control
Your posts are moderated
Related Questions
Expertsmind.com brings you unique solution in physicsWhat processes shape Earth's surface? What processes shape Earth’s surface? -Impact craters: bowl-shaped cr

The database contains two very simple tables. One holds student information and the other holds assignment grade information. Our goal is to provide a very rudimentary interfa


I need help About the project I sent and it is the third time I am sending so please I really want help

Factors affecting accuracy 1. The transducer must be located in an appropriate place and with an appropriate orientation to measure the measurand accurately. 2. The introduc

working principle of storage oscilloscope


Types of patterns : These  depends upon many factors like the bulk of casting, type of moulding processes, number of castings required and the anticipated difficulty of moulding,

Divided entrance duct On a single engine aircraft with fuselage mounted engines, either a wing root inlet or a side scoop inlet may be used. The wing root inlet presents a pro

10 vertical examples