Volumetric eff.

[Bruce Bowling]

~ 
~ Perhaps the best way to ball-park your VE curve is to use one of the engine
~ simulator programs. Commercial programs, like Engine Analyzer ($80 at Summit)
~ give VE figures as part of their "dyno" sheets. Bruce Bowling was working
~ on an engine simulator. I don't know if he's gone any further with it, but
~ the last time I looked it did not compute VE.
~ 
~ Mike
~ +--------------------------------------------------------------------------+
~ | Michael F. Sargent   | Net: msargent at gallium.com | Phone: 1(613)721-0902 |
~ | Gallium Software Inc.|                           | FAX:   1(613)721-1278 |
~ +--------------------------------------------------------------------------+
~ 
~ 
No, I never put in VE, because its computation is difficult
to get even in "ballpark" terms.  Re-phrasing: the actual computation
is straightforward, the inputs are massive, much more than an average
person would tolerate while keeping their sanity.


The $80.00 code utilizes an empirical equation, similar (or exactly) to:

VE = 5600 * ((Horsepower)/(RPM * CID)) * 100.0

and will yield $80.00 results.

- Bruce


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               Bruce A. Bowling
  Staff Scientist - Instrumentation and Controls
 The Continuous Electron Beam Accelerator Facility
    12000 Jefferson Ave - Newport News, VA 23602
                 (804) 249-7240
                bowling at cebaf.gov  
        http://devserve.cebaf.gov/~bowling
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