Aircraft Engine Power
Aircraft Engine Power
(OP)
HI
Assuming even distribution of fuel and air in the engine, why is peak/best engine power not at peak EGT (with stoichiometric fuel to air ratio 14.7 to 1)? I was told that best power is at a slightly rich fuel to rich ratio.
If 14.7:1 gives the most efficient combustion (with no excess fuel/gas) why doesn't the engine power peak at this point?
Please see link below:
http://www.mummbrothers.com/SRF_Stuff/images/Stoic...
Thanks
Al
Assuming even distribution of fuel and air in the engine, why is peak/best engine power not at peak EGT (with stoichiometric fuel to air ratio 14.7 to 1)? I was told that best power is at a slightly rich fuel to rich ratio.
If 14.7:1 gives the most efficient combustion (with no excess fuel/gas) why doesn't the engine power peak at this point?
Please see link below:
http://www.mummbrothers.com/SRF_Stuff/images/Stoic...
Thanks
Al





RE: Aircraft Engine Power
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Aircraft Engine Power
RE: Aircraft Engine Power
However, mathematically speaking, should max power be at 14.7:1 (stoichiometric) ratio? The power curve should theoretically peak at 14.7:1 air-fuel ratio since both fuel and air are used up, correct?
RE: Aircraft Engine Power
RE: Aircraft Engine Power
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?