Piro
Posts: 20
Joined: Sun Feb 19, 2017 5:47 am
Delivery Date: 19 Feb 2017

Re: Extending range of 24kWh Leaf with LeafBox

Mon Mar 20, 2017 9:02 am

Stanton wrote:This is what I originally suspected, so glad to see it proved out. Unfortunately, the times I need range extension are on trips that are (mostly) highway, which reduces the value of LeafBox for me. There's no range-killer like speed for an EV ;)


Yes, you are right. If we assume 100% highway usage - then just simple physics says, that LeafBox cannot help with range.

Whole improvement comes from city driving, moderate long distance journeys, living in hilly region, or mountains.

LeftieBiker
Posts: 5723
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Extending range of 24kWh Leaf with LeafBox

Mon Mar 20, 2017 12:45 pm

Since I'll be extending my lease again, I'm interested. I drive mainly secondary roads at 30-50MPH, with some highway use at 55MPH. It's moderately hilly here. Any idea how much more range I could get?
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

Piro
Posts: 20
Joined: Sun Feb 19, 2017 5:47 am
Delivery Date: 19 Feb 2017

Re: Extending range of 24kWh Leaf with LeafBox

Tue Mar 21, 2017 12:06 am

LeftieBiker wrote:Since I'll be extending my lease again, I'm interested. I drive mainly secondary roads at 30-50MPH, with some highway use at 55MPH. It's moderately hilly here. Any idea how much more range I could get?


After collecting all data from testers - it looks, that 10% or more (more city drive = better result). This also depends on drivers' skills, as huge part of range improvement comes from using "coasting/gliding" function of LeafBox.

LeftieBiker
Posts: 5723
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Extending range of 24kWh Leaf with LeafBox

Tue Mar 21, 2017 2:15 am

I'm pretty good at coasting (my Vectrix motorcycle will coast), but rarely bother to shift to R/N to do it. What's the process? Are you still testing, or selling or renting it?
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

Piro
Posts: 20
Joined: Sun Feb 19, 2017 5:47 am
Delivery Date: 19 Feb 2017

Re: Extending range of 24kWh Leaf with LeafBox

Tue Mar 21, 2017 5:06 am

LeftieBiker wrote:I'm pretty good at coasting (my Vectrix motorcycle will coast), but rarely bother to shift to R/N to do it. What's the process? Are you still testing, or selling or renting it?


It is a finished product, available from http://vtechtuning.eu/leafbox.html

Let's say it is a "half-commercial" product - I use money to develop products for other EV cars.

VitaminJ
Posts: 309
Joined: Tue Jan 03, 2017 11:46 am
Delivery Date: 07 Jan 2017
Leaf Number: 415775
Location: Morrison, CO
Contact: YouTube

Re: Extending range of 24kWh Leaf with LeafBox

Tue Mar 21, 2017 10:00 am

LeftieBiker wrote:I'm pretty good at coasting (my Vectrix motorcycle will coast), but rarely bother to shift to R/N to do it. What's the process? Are you still testing, or selling or renting it?

As described in the videos and the first pages of this thread; LeafBox changes D mode to "Glide" mode. In this mode the "dead zone" of the pedal is larger to allow your foot to easily rest in a position where the motor will go to 0 kw/neutral. The stock Leaf already does this but you need supreme foot control as the pedal "dead zone" is only 1-2cm. This way you can cruise in D and with just a movement of your foot instantly switch to neutral and coast at maximum efficiency and not have to deal with the shifter at all.
2013 Ocean Blue SV w/ QC and LED

PM me about converting your 120v EVSE to 240v

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drees
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Joined: Fri Apr 23, 2010 3:51 pm
Location: San Diego

Re: Extending range of 24kWh Leaf with LeafBox

Wed Mar 29, 2017 12:14 am

Piro wrote:I plan do explain also a bit more about that, how it is possible to go over 80kW limit (by poor 3kW, but still better than factory power, this functionality is NOT ENABLED yet) and how it is possible to invoke higher regen (again about 3kW better regen, as it bases on the same trick - exploit of factory PID_R algorythm for power demand stabilization). Maybe this will be boring for most of you, but for some it will be interesting. For me personally this exploit is a well known trick, because I have observed it in many ECUs of gasoline cars years ago, while working at reverse engineering them (as Im car tuner, all in all). I checked that in Leaf just for fun, believing in maybe 5% of chance, that this will work - and tadaaam - it works. Also for regen. I will prepare some pictures (graphs) to explain that better.

Would love to see exactly how that works.

For me, my biggest complaint about the LEAF's regen is how the maximum amount of regen is highly limited at any speed higher than 10-15 mph. At highway speeds you often get NO regenerative braking. This gets much worse as your LEAF loses capacity.

It seems that the only way to work around this would be to actually reprogram one of the LEAFs ECUs - I don't see how a pedal position remapper would be able move these thresholds significantly unless I'm missing something.
'11 LEAF SL delivered Jun '11 - 3.24 kW Enphase Solar PV
Mar '17: 59k 40.6Ah 175/144 GID
2 months too late.
9th 8/12/16 43.3Ah 186/152 GID, 10th: 10/23/15 @ 47.4Ah 203/167 GID, 11th: 11/11/14 51.6Ah 220/181 GID, 12th: 9/23/13 55.3Ah 228/194 GID

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