Andy Ross wrote:
> Vivian Meazza wrote:
> > Engines/engine/boost-pressure-psi-gauge = 46.00167 (correct order of
> > boost)
> Can you try it with the CVS code? This may be interacting badly with
> your local changes, which makes debugging difficult. Nothing in this
> mechanism should require any of the new code.
I've already done that, but didn't take exact readings; the outcome looks
the same, I think. I'll do it again. The new/old code should have no impact
> Also on this subject: I started integrating the RPM-based supercharger
> attenuation, and noticed that your code added three new engine
> mp-pascals: Is this needed? The standard so far for manifold pressure
> has always been inHg. Having lots of duplicate units around
> complicates things; we can always do conversions in the panel
> animations or Nasal code.
I don't use it: I only include it because I thought we ought to have SI
> boost-pressure-psi-gauge: This looks to have been hardcoded to sea
> level; it should be using ambient, no? Also, must the units be
> PSI, or can I change them to inhg? The final name would then be
> "boost-gauge-inhg" (units go last, and "pressure" is implicit in
> the units).
OK with the name. PSI(gauge) is what we use over here, otherwise it's inhg
absolute for the US. Gauge-inhg makes no sense. In real life there's no
difference between the way the US and UK measure the pressure, it's the zero
on the gauge which is different, so I think it's correct the way it is.
Gives the right gauge readings anyway.
> boost-pressure-inhg: Reading the code, this looks like an absolute
> manifold pressure, and not a boost at all. Is this a mistake, it
> looks like a synonym for mp-inhg to me.
I named it that way to distinguish it from mp-inhg, which in the current
code reports supercharger output before the 'wastegate' is applied. The
existing mp-inhg should be retired or renamed to supercharger-output-inhg to
reflect what it reports (useful for testing). Then boost-pressure-inhg can
be renamed accordingly.
The important thing is for the pressure, in whatever units you want (apart
from gauge-inhg), is reported _after_ the 'wastegate' etc. have been applied
to the supercharger output.
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