Reciprocating Engines

[joan271273]

I know that when you are using gas turbine generators turbines the standard output is rated ( qualified ) against certain rated conditions ( 70F, 60% RH, etc ) and when for example my ambient temperature goes up I will have a reduction on output capability.

Now in the case of reciprocating engines have some co workers telling me this is not the same or is basically negligible.

Can some one shed some light.

 

[boo1]

It is a mass flow issue; PV=NRT
This applies to both turbine and recip engines, but the performance of the recip engines is not critical.

 

[joan271273]

Could you expand a bit on the response, why ? the non criticality with the recip units.

Thanks

 

[boo1]

Modern day engines provide a feed back loop (0 2) in there fuel control.

 

[GregLocock]

The quoted power figure for automotive engines is corrected for air pressure , density and (I think) humidity.

A cold foggy day by the coast can give you 10% more horsepower than a hot day up in the mountains. As boo implies, modern fuel systems should still give you the right mixture when that happens.

Actually they won't - automotive systems usually run open loop at full throttle. Cheers

Greg Locock