Busting engines.

[Bladderburst]

Today I have destroyed a bunch of engines.

So, I want to know what to avoid to keep your engine running.

 

Thanks for your help.

[SYN_Saintblu]

Rpm and boost pressure needs to be watched.

You shouldn't run your RPMs at their highest for very long.

 

For example, take off in the 109 is about 2700, climbing to altitude should be about 2500 and when you are at altitulde and cruising it should be set to a continuous 2300.

 

In aircraft where prop pitch is manual I use that to keep the revs in check, and I use the thottle to keep the boost pressure at appropriate levels.

 

Also, make sure you use the water and oil radiators. Busting the engine is usually down to too high revs for too long.

Edited March 8, 2014 by SYN_Saintblu

[andyw248]

Depends on the aircraft you fly, of course, but here are some general tips:

• Before takeoff, set oil and water cooler to "open" (LaGG, Il-2, and Ju-87 have working oil and water coolers).
• After takeoff, reduce power and RPM. Depends on the plane how much, but these work well:
  • LaGG: MP to 95, prop to 2,450 RPM
  • Il-2: MP to 105, prop to 2,050 RPM
  • Ju-87: MP to 12, prop to 2,300 RPM
• Once you have reached your cruise altitude, reduce power and RPM further. Now you can close the oil and water coolers.
• When you reach the battle zone, open the oil and water coolers. You might need power, and therefore cool the engine down. You may also want to increase RPM a little (but usually not to max, because that's only for takeoff).
• When you fly back to base, you can reduce RPM again, and close the oil and water coolers.
• On approach, keep the coolers closed, to avoid shock cooling of the engine. Once you have reduced power, increase RPM to full. This is how you land.

[Sternjaeger]

...or more simply, keep an eye on your temp gauges, and get used to manage the radiators/RPM/prop to keep your values within optimal range. It's not too dissimilar than driving a car really! ;-)

[Bladderburst]

Yes, I try to keep engine temperature down but it seems I did bust my 109 a couple of times, especially when diving. Since the engine is automatically managed I'm wondering what's happening. I'm usually having no trouble with that but lately it seems it happens often.

 

I'll get used to it eventually .

[senseispcc]

The 109 has a auto rpm management and also the radiators are automatic but this devices are not perfect far from it and if you push your engine at max for to long it burn itself out very very quickly.

[molotovb]

So I'm wondering if engine overheating can be turned off as a difficulty option sometime in the future?  The auto-throttle management seems to be very conservative, putting me at something like 70% power usually in the BF109.  Does the throttle really need to be turned down that much to prevent overheating?

 

Help a noob!

[SYN_Saintblu]

Short answer is yes for the 109. You can also keep the temps down a bit by not climbing to steeply. Keep on eye out that you're not getting the oil to hot as that is not automatic in the 109.

[SkyMirage]

It's correctly modeled though. The max throttle the 109 could run at continuously is 85%.

[SYN_Saintblu]

Short answer is yes for the 109. You can also keep the temps down a bit by not climbing to steeply. Keep on eye out that you're not getting the oil to hot as that is not automatic in the 109.

Correction: They are not auto oil flaps as I thought.

[LukeFF]

For the Il-2, I find that cruising at 1500 RPM with 11 mmHg keeps the engine temperatures under control.

[BeastyBaiter]

The 109F in this latest version has the engine randomly break if you stay above 80% throttle for more than a minute or two. It is completely independent of engine temperature, instead being a randomized failure as far as I can tell. The IL2 and LaGG-3 don't seem to have this "feature."

[-=PHX=-Satch]

The 109F in this latest version has the engine randomly break if you stay above 80% throttle for more than a minute or two. It is completely independent of engine temperature, instead being a randomized failure as far as I can tell. The IL2 and LaGG-3 don't seem to have this "feature."

 

Where you have read this Hrothgar?

[andyw248]

For the Il-2, I find that cruising at 1500 RPM with 11 mmHg keeps the engine temperatures under control.

 

1,850 RPM with 8.5 mmHg works well too. That's what the manual says for cruise, and it seems to be modeled correctly in the sim.

[Sternjaeger]

yeah, finally managed to try the updates last night for 10 mins (I'm LOVING the clouds!), and there's something definitely wrong (or new, but unexplained) with the 109s engine.

[Sternjaeger]

thanks man! You see, this is the kind of stuff that they really should put a tiny effort into and add to the release info, because this "reverse engineering" of going to search for the info on the forum all the time is sort of frustrating, especially considered the small window of playing time we have at the moment.

[=RvE=Windmills]

 So is the damage due to overheating or is that unrelated? Since the HUD overheat indicator doesn't show anything until after the engine has blown for me.

[Bladderburst]

At what throttle setting is it considered overload? 80% as said before?

[Matt]

 So is the damage due to overheating or is that unrelated? Since the HUD overheat indicator doesn't show anything until after the engine has blown for me.

Tough to say, without working oil temperature and oil pressure gauge.

 

I don't think the current implementation is final anyway. Seems more like a first test. I'm not worried about it (yet).

[=RvE=Windmills]

Tough to say, without working oil temperature and oil pressure gauge.

 

I don't think the current implementation is final anyway. Seems more like a first test. I'm not worried about it (yet).

 

I always had the impression that an engines ability to cool itself was the main limitation on how long it could sustain a certain throttle level. Or at the very least excessive temperatures would become a problem before other things start breaking.

 

Just wondering if that is the case in RL, and if in turn we should eventually expect temperature warnings before damage at some point.

[Emgy]

At what throttle setting is it considered overload? 80% as said before?

80 % throttle axis will result in different boost pressure depending on conditions

For the 109 specifically, refer to extreme's link: http://forum.il2sturmovik.com/topic/4680-developer-diary-part-56/?p=95615

Edited March 10, 2014 by Calvamos

[BeastyBaiter]

Where you have read this Hrothgar?

 

No where, just flew the 109 a few times and that's what I found in game.

[=RvE=Windmills]

Well it does seem to be related to temperature.

 

In level flight full throttle 0 alt rads closed (if it matters), engine starts smoking after 3 minutes, dies after 4.

 

In steep climb full power, engine started smoking and instantly died after 2:20.

 

You can probably get a more extensive test, and maybe there's still some randomization but it's not just a timer that starts ticking when you go 100%.

[FuriousMeow]

Temperature is not the only point that dictates the capability of an engine to maintain high RPMs. Oil viscosity is another, and that breaks down not with just temperature but friction and the higher the RPM the more friction is present. Oil was significantly different back then than today. Today the 3000 mile change limit actually isn't needed, the oil can be changed at far greater intervals so long as the oil level is maintained - but back then when oil was poorly refined and full of impurities it had to be changed much more frequently. And that's not another one point, there are other items within an engine that break down at higher RPMs such as linkages, chains, etc. It's not just a function of temperature.

Edited March 10, 2014 by FuriousMeow

[Bladderburst]

Ok now I have no problem with the 109. For the yak1 I always bust the engine pretty good. A bad thing is that I don't even get what I am doing wrong here as the engine shows no sign of an incoming problem.