109 G14 fuel consumption bug

[Boozeman]

First of all, with this being my first post here, I'd like to give a big <S> to the community here, since I have really enjoyed the last 6 months in this game, and also reading the boards here.
 

But now to the topic of this thread: On WEP (2800 rpm, 1,70 ata), the G14 consumes just 254 gph (burn rate: 2) wich is the same as earlier Gs on thier WEP setting, but that is only 1,42 ata at the same rpm. This is probably not right, since the slightly higher boosted K4 does consume 296 gph at 1,8 ata. So for the G14, at 1,7 ata, something in the ballpark of 280 gph seems more appropriate.   

[Krusty]

The K-4 is a totally different beast.


The G-14 uses MW-50, which is a water-methanol additive. It cools the air or the mixture, I can't recall the exact specifics, but basically it allows greater pressure (i.e. boost) without premature detonation.

So basically the MW-50 is a different system from what the earlier 109Gs have, you're getting different results in the fuel burn, but still getting more power.

[Boozeman]

So basically the MW-50 is a different system from what the earlier 109Gs have, you're getting different results in the fuel burn, but still getting more power.

Yes, that's the point. There is more power in the G14, however the consumption remains the same as with the lower boosted earlier G versions. That's why I brought up the K4. In terms of the engine, the difference between both is not too big and the K4 also uses MW-50. But it consumes considerably more fuel, for little additional boost and thus power.   

 


   

[Anaxogoras]

The K-4 has more HP.

[Motherland]

Yes, that's the point. There is more power in the G14, however the consumption remains the same as with the lower boosted earlier G versions. That's why I brought up the K4. In terms of the engine, the difference between both is not too big and the K4 also uses MW-50. But it consumes considerably more fuel, for little additional boost and thus power.   

 


   

All Bf.109G's use the Daimler Benz DB605A engine. The Bf.109G2, G6, and G14 all produce the same horsepower without WEP.
The difference comes with the 109K4, which uses the DB605D. The DB605D is much more powerful than the 605A.

[Krusty]

Yes, that's the point. There is more power in the G14, however the consumption remains the same as with the lower boosted earlier G versions. 

No, my point was that the boost additive allows higher boost (thus MORE power) and in the process changes the gph fuel consumption WHILE giving more boost.

It's not the same as the G-2 and G-6 we have in-game. They don't have MW-50.

[Boozeman]

Thanks for the responses Gentlemen, I appreciate it. some points that i'd like to add to avoid any misunderstandings:
 
It is ture that the K4s engine has higher MIL boost that the other G models, thus more power and also more fuel consumption:

K4 : 1,45 ata (236 gph)
Gs: 1,3 ata (212 gph)

An increase of 11% in boost also yields 11% increase in fuel consumption - fits perfectly, since on MIL no
MW-50 is used and air/fuel ratios remain the same.

Now lets see the WEP values:

K4: 1,8 ata (296 gph)
G14: 1,7 ata (254 gph)
G2/6.: 1,42 ata (254 gph)

We can see, if we compare the base Gs to the K4, there is a 26% increase in boost, but only 16% increase in fuel consumtion, thanks to the methanol in the MW-50 mixture. But its pretty clear that
the G14 does not fit into this scheme, albeit it also uses MW-50. It has still 20% more boost than the base Gs, but the consumption remains the same. As we know, you cannot extract power out of the additional air alone, it also needs additional fuel to combust, which is not there though.

My thought is, since the G14 FM is based on the G6 FM, that by accident the WEP consumption value have been carried over.

The other explanaition would be that the G14 engine in a miracle in terms of efficeny under WEP compared to the other DB605 subtypes, but i really dont think this is reasonable in any way.   

   

[Krusty]

Dude... for the 3rd time, water injection produces more power with LESS fuel consumption for the power!

It's the MW50!

It's not a bug that water injection in US planes produces LESS fuel consumption than full throttle, for more power.

It's the way the system works.

[Boozeman]

Well, let suppose you are on the correct path...would you then agree that in that case the K4s fuel consuption under WEP is way too high?