29 pages of test procedures that may answer your questions are available from the page I linked in the OP, and directly here:DaveinOlyWA wrote: ...Like Tony, i think there is something missing from the report (since there is very little said about how the test was done) that might be more important than the testers realized?
http://avt.inel.gov/pdf/fsev/eva/etatp4r3.pdf" onclick="window.open(this.href);return false;
Excerpted from the Initial conditions and prerequisites:
...4.3.1 Road tests shall be performed on a road or test track which is level
to within 1%...
4.6 Tires provided with the vehicle shall be the standard tire offered by the
Electric Vehicle manufacturer, and shall be inflated to the manufacturer’s
(placard) recommended cold inflation pressures. This pressure shall not
exceed the maximum allowable pressure imprinted upon the tire’s sidewall...
4.8 Accessories shall not be used during testing activities...
And specific to the 60 mph test:
It does not seem to list specific criteria for the 70 mph test.5.2 Range at 60 mph Constant Speed
The purpose of this section is to determine the maximum range the vehicle
can achieve with the batteries fully charged (100% SOC), the vehicle
loaded at curb weight plus 332 pounds, and operated at a constant 60 mph.
This testing shall be completed subject to the initial conditions and
prerequisites stated in Section 4 of this procedure.
5.2.1 Instrument the vehicle to obtain, at a minimum, the data identified
in Section 4.10. Calibrate the fifth wheel, as necessary.
5.2.2 Verify the traction battery is at fully charged (100% SOC).
5.2.3 Record odometer reading and time on Appendix B.
5.2.4 Adjust the vehicle’s cold tire pressures to match the manufacturer’s
placard value, or the maximum cold inflation pressure imprinted
upon the tire’s sidewall, whichever is less.
5.2.5 From a standing start, accelerate the vehicle under its own power to
a speed of 60 mph ± 1 mph (96 km/h ± 1.6 km/h). Speed and time
may be recorded via a Data Acquisition System (DAS.)
5.2.6 Each time the vehicle passes the lap marker, record the SOC meter
reading and the odometer reading. Each reading shall be recorded
in the smallest increment displayed by it’s respective indicator.
5.2.7 Maintain this speed without interruption until an average vehicle lap
speed of at least 57 mph (91 km/h) cannot be maintained. If testing
is being accomplished at FaAA, continue testing until the vehicle
will not maintain 53 mph on the east bound straight-away. Record
the final speed, odometer reading and time on Appendix B. (This
may be recorded via a DAS.)
5.2.8 Pull the vehicle off to the side of the test track. Record the time,
mileage, SOC meter and odometer reading on Appendix B...
Otherwise, about the only additional information I'd like to see is the actual test site's elevation profile.
As I said earlier:
Meaning, of course, that estimates of available battery capacity from range tests using higher m/kWh estimates may be suspect.I was about to do that, thanks!Sublime wrote:From the battery (from the wall):jpa2825 wrote:Can anyone provide an Executive Summary for Dummies? Avg. m/kWh at 45, 60 & 70 mph maybe?
45mph = 4.85mi/kWh (3.94mi/kWh)
60mph = 3.70mi/kWh (3.04mi/kWh)
70mph = 2.92mi/kWh (2.48mi/kWh)
IMO, this is some of the most interesting data from this report, that the m/kWh seemed to test out considerably lower than that most have guessed...