|
That is exactly what I am doing ^. Even just PE and KE will be useful. Instantaneous BSFC calc. and coast down drag is icing.
While I know how to do it, both conceptually and technically, it's not part of my day job to do what is required, thus it requires a certain amount of effort to figure it out. Consequently it is progressing as I feel motivated to work on it. Another "brain", perhaps a different approach, would be interesting.
I think a "calibration" neutral coast down (or more than one), in a straight line, on level ground, will allow the (total) drag related to road speed to be calculated. With that, a fuel consumption input (proxy by injector DC as per MPGuino) and the rate of accumulating KE and PE the engine efficiency (BSFC) can be calculated.
The extra drag associated with cornering might be harder to account for. A spread of constant radius corner coast downs and a steering angle input? I'm not sure where that would be possible at road speeds.
|