surfingslovak said:
edatoakrun said:
I have no idea what regen efficiency is. I have observed that I "gain" about one bar for each 1,000 ft. of descent, and "use" one bar for each 800 ft. of ascent.
So on this trip I used a bit over 1 bar more than I would have on a level drive at the same speed-about 40 mph average.
Remember, most of the energy of ascent is recovered WITHOUT the use of regen, by simply using low throttle on descent to maintain desired speed.
The less regen you use, the further you get.
Yes, that would make sense. However, I think I misspoke and I blame it on the lack of sleep. The MPK number and the total energy expended should cover losses due to changes in elevation. The only thing that would not work, is the estimated range and the implied MPK based on your speed.
The model says that the reserve is about 3 kWh, and by the looks of it, you barely dipped into that. It might be realistic to assume that about 2.5 kWh of available energy was left at the end of the trip. These are fairly rough numbers, but if we put it all together, it correlates with the model, but there is still some delta:
16.8 + 2.5 = 19.3 kWh
As I read the chart here:
http://www.mynissanleaf.com/viewtopic.php?f=31&t=4295&start=190" onclick="window.open(this.href);return false;
I believe I pretty much exactly matched predicted range, less correction for net elevation, with 80% recovery of ascent energy.
As to total kwh as "charted", I would say the total is more like 16.8+3=19.8, as the last 3.1 miles after LBW were at about 25 mph average, and just a few hundred feet of descent (hard to determine my precise altitude at the LBW) would net that out with regen.
There does appear to be a problem with the bottom of the chart, as I always get the "low battery warning" long before losing the first bar.
Yesterday, I drove the same route again at slightly higher speed with more (still not much) AC use. When I reached my driveway, at 85 miles
(correction: 87 miles) I still had (less than) one bar, so I drove until I got the "very low battery" warning and simultaneously lost the last bar, at 91.5 miles. I got home with 93.4 miles, and between 5,500 and 6,000 ft. of ascent and descent, at an average speed of about 40 mph (those last 8.4
(6.4) miles were up and down a hill at low speed). Since the last 1.9 miles after the "very low battery” warning were at about 20 mph and required about 150 ft. net descent with regen, I was probably still very close to the VLBW point capacity, when I parked.
I will edit with the CW energy use report for this drive, after it shows up.
9/11 edit-According to CW, I used 18.7 kWh to drive 91.1 miles at average energy economy of 4.9 m/kWh.