• Which the release of FS2020 we see an explosition of activity on the forun and of course we are very happy to see this. But having all questions about FS2020 in one forum becomes a bit messy. So therefore we would like to ask you all to use the following guidelines when posting your questions:

    • Tag FS2020 specific questions with the MSFS2020 tag.
    • Questions about making 3D assets can be posted in the 3D asset design forum. Either post them in the subforum of the modelling tool you use or in the general forum if they are general.
    • Questions about aircraft design can be posted in the Aircraft design forum
    • Questions about airport design can be posted in the FS2020 airport design forum. Once airport development tools have been updated for FS2020 you can post tool speciifc questions in the subforums of those tools as well of course.
    • Questions about terrain design can be posted in the FS2020 terrain design forum.
    • Questions about SimConnect can be posted in the SimConnect forum.

    Any other question that is not specific to an aspect of development or tool can be posted in the General chat forum.

    By following these guidelines we make sure that the forums remain easy to read for everybody and also that the right people can find your post to answer it.

MSFS20 What SDK engine parameters affect manifold pressure?

Messages
18
Country
belgium
I'm trying to model an engine and although I'm getting close to the real thing, the manifold pressure reading is too low. I'm reading values from about 4.0 inHg up to about 18 inHg. The engine I'm modeling should read something in between 25 (1400 RPM) and 42 (6400 PRM).

What are parameters (that can be set in the MSFS SDK) that affect these values?
 
In FSX it was (and in the MSFS it is in the engines.cfg)

turbocharged = 0 ; Is it turbocharged? 0=FALSE, 1=TRUE
max_design_mp = 29.92 ; Max design manifold pressure, (inHg)
min_design_mp = 2.992 ; Min design manifold pressure, (inHg)


You need to have supercharged or turbocharged set to 1 to get manifold pressure above 29"

In a normal engine the manifold pressure will never exceed the outside air pressure (because that's how they work). Only with a supercharger or turbocharger can you get higher manifold pressures (because that's how they work).
 
Tx for the quick reply, @Anthony31!
The engine is indeed turbocharged and I already indicated it as such in the sim.
So does you mean I have to set the max and min design MP to 29.92?
 
Hmmm... That's really strange: I have to set the MAP ranges up to like 5000 to get readings that come somewhere near the real-world values... (while the units stated in the configurator are inHg) And if I do so, the engine's RPM goes waaaay up, like a 1000rpm too high.
Must be some other params that don't match yet... 🤔 I guess I'll have to do some more reseach.
 
Back
Top