SimVar to control piston engine power globally?

[Arantis_Sim]

Hi all,

I’m looking for a SimVar that would allow me to control piston engine power globally—specifically something like engine mechanical efficiency or engine friction.
I’ve gone through all available piston engine-related parameters and SimVars but couldn’t find anything that seems to fit.
The goal is to simulate engine power loss when the A/C compressor is turned on in a piston-engine aircraft.
Has anyone come across a way to achieve this?

Thanks in advance!

[JimStewart]

Not aware of one that exists, but if anyone from Asobo is listening ( @FlyingRaccoon ), it would be wonderful to have such a simvar scalar that could be written to.

[MrTommymxr]

I also need a modification scalar to the engine mechanical efficiency and friction values.

Reasons:

• Non linear relationship of MAP to torque
• Engine damage
• Oil viscosity
• Parasitic loads
• Turbo back pressure
• Pumping losses
• Variable valve timing and spark timing

I currently do this with input events, but that apparently only works in fs20 because its bugged

[JimStewart]

All great reasons to have this. It would be a sensible method to achieve any sort of situational power/efficiency loss.

[MrTommymxr]

Volumetric efficiency scalar also.

Also per engine so we can make each engine feel slightly different.

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