Preliminary mini-scanner data
 

Hi,

I recently got a OBD miniscanner for my NHW11 Prius and after fiddling with the RS-232 interface, started capturing some data. My first question being what is the relationship between ICE rpm and fuel consumption:
http://hiwaay.net/%7Ebzwilson/prius/pri_power_fuel.jpg

Now there are open questions about the calibration but one quick observation is the specific fuel consumption really heads south from 3,500 rpm and higher.

I still have a lot of work to do to map the fuel injector timing to actual fuel flow. Also, I need to understand why the ICE max rpm appears to be 4,300, not 4,500. Regardless, it is a start.

Bob Wilson