4.11 - Engine: Overheat!

[EJGr.Ost_Caspar]

Originally Posted by MadBlaster

First, Thanks for patch. But I'm wondering from reading so far.

An oil temp at 80 degrees celsius is not an overheat condition. More like the upper bound of a normal operating condition. You should be able to maintain that indefinitely. When you get to say 90C degree, there are usually operating limits that kick in, like 1 hour...etc. Then there are limits on cylinder head (e.g., temp 260C for minutes when you go balls out) were the limit is only like 5 minutes.

Consider, that most gauges show 'oil in' temperature... means, temperature of oil, that is already cooled down.

[F19_Klunk]

Without having tested 4.11 more than a few sorties so far, this "feature" or tweak is actually one of those I am looking forward to the most.

Even though I cannot say that I am very happy about CLoD's current "situation", the importance of handling water/oil temperatures, RPM etc is somwthing I really appreciate.. I am glad TD have focused on making engine management more complex and important.

Looking forward to investigate further...

[MadBlaster]

ok. 'overheat message' must be tagged to the 'oil-out'. so I suppose you could have oil out at 105C -110C, put the plane into a dive with rads open and get oil in at 80C.

[IvanK]

Regarding Overheat and Oil temps. Within IL2 the critical Oil temp wrt overheating is the Oil "OUT" temperature however the gauge is Oil "IN" temperature which is always cooler. As can be seen in the Merlin data below (Spit II) Oil out is on average 15-20C warmer than Oil in. These routines will be tweaked further.

[F19_Klunk]

Great... I am very happy and excited for this direction...

.. this development of CEM means that by managing your engine effectively ( A MUST) and keeping a good temp/RPM etc on your engine, whilst your enemy does not... may actually lead to a big tactical advantage.... you might even catch a on the paper faster airplane because he has an overheated engine..or he has to be careful because he is on the verge on wrecking it.. (mismanaged it) This was true before but even more so now.
This means .. again.. that the PILOT is even more important than the plane than before... smart able pilots have the advantage.
thumbs up! No more pilots with cruising power 90%

PS thanx for the explanation with oil in/out.. makes sense..
Is there any documentation to see which planes measure oil in/out...? or is the "in" temperature more of a rule?

[CWMV]

I have not had a chance to DL yet but am curious if there is now an added ability to manipulate oil coolers separately from the radiators for applicable aircraft?

[IvanK]

Originally Posted by CWMV

I have not had a chance to DL yet but am curious if there is now an added ability to manipulate oil coolers separately from the radiators for applicable aircraft?

No

[bolox]

for those wanting to see actual figures for oil temp in/out- can i suggest devicelink.

http://www.mediafire.com/download.php?jn6ygq5jbb58tv3

this gives digital readouts of OTI and OTO (ON A SEPARATE COMPUTER )- and of course this only works offline

more info on devicelink here
http://forums.ubi.com/showthread.php...s-thread/page5

[gavagai]

Excessive over-heating has always been one of the weakest aspects of Il-2. 4.11 makes it much, much worse.

In one of my first tests I had the cowl flaps all the way open on the Ki84, at 66% throttle, in level flight, and the overheat message would not go away.

Pilots did not reduce power during normal operations to prevent the engine from immediately breaking; they did it to extend the life of the engine and reduce the frequency of overhauls.

I love the new AI, but this overheat business is such a step backward that I will probably stick with 4.10 for as long as possible.

[K_Freddie]

Originally Posted by gavagai

In one of my first tests I had the cowl flaps all the way open on the Ki84, at 66% throttle, in level flight, and the overheat message would not go away.

How was your fuel mixture...?
Did you overheat the engine too much to start with ?
What were your engine revs ?