EEC 737 NG

[owl-attack]

Hello All

737 NG. Engine Rating are calculate by EEC from sensed atmospheric conditions and bleed air demand


Can some one explain to me in layman terms what does Engine rating mean and why does the EEC have to calculate it? I thought engine rating where engines with 26k or 27k thrust and they were fixed when you get the aircrafts with engines fitted on them

And why are the inputs for EEC taken from bleed air demand and EEC ?


Thanks a lot