JasonA
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Re: Nissan e-NV200 Concept

Mon Sep 22, 2014 10:25 am

SmartElectric wrote:The lightness of the car has the biggest impact on performance (something BMW remembered !)
;)
Umm prob not.. We had this discussion at the last meet.. About the RavEV/Tesla against the Leaf..

2 heavier vehicles against the Leaf which is much lighter. The Rav once you get it up to speed, put it at 65/70mph... it just cruises because it has the momentum to carry it and needs less (Tesla benefits from the mass but better aero). In stop and go... They dogs..

The Leaf however... push it hard past (48mph is the aero drag point?) 59 or 60?? and you're just burning needless energy because it's light and doesn't have the weight to carry it.

However the Leaf wins in stop and go traffic! No one wants to drive 45-50mph on the frwy. That's unrealistic :roll: Today's roads are 70+

EDIT: 91040 can.. 40miles to home on 17% :lol:
2012 10kw Dual LQ cooled Brusa powered Leaf "Astro"
13kw Enphase System,SolarWorld Panels, QuickMountPV- ALL USA!!
2014 Rav4 "SuperRav"with JdeMO (CHAdeMO)
2015 MS-70D

TEG
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Re: Nissan e-NV200 Concept

Mon Sep 22, 2014 12:36 pm

JasonA wrote:2 heavier vehicles against the Leaf which is much lighter. The Rav once you get it up to speed, put it at 65/70mph... it just cruises because it has the momentum to carry it and needs less (Tesla benefits from the mass but better aero). In stop and go... They dogs..

The Leaf however... push it hard past (48mph is the aero drag point?) 59 or 60?? and you're just burning needless energy because it's light and doesn't have the weight to carry it.


I think it has more to do about the motor toque & horsepower "curves". LEAF power stops rising much above 40MPH so freeway acceleration is somewhat uninspiring. RAV4EV with Tesla Model S motor make a lot more horsepower at high RPMs and so accelerates better on the freeway.

I think the idea that extra weight providing useful momentum may be a mis-characterization. If you like "coasting" behavior I think that is programmed in based on regen algorithms more than some benefit of extra weight.

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drees
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Re: Nissan e-NV200 Concept

Mon Sep 22, 2014 1:51 pm

TEG wrote:I think the idea that extra weight providing useful momentum may be a mis-characterization. If you like "coasting" behavior I think that is programmed in based on regen algorithms more than some benefit of extra weight.

Yep, all else being equal a lighter vehicle will be more efficient than a heavier car, even on the freeway.
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JasonA
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Joined: Thu May 09, 2013 10:16 am
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Location: Sylmar, CA

Re: Nissan e-NV200 Concept

Mon Sep 22, 2014 3:38 pm

drees wrote:
TEG wrote:I think the idea that extra weight providing useful momentum may be a mis-characterization. If you like "coasting" behavior I think that is programmed in based on regen algorithms more than some benefit of extra weight.

Yep, all else being equal a lighter vehicle will be more efficient than a heavier car, even on the freeway.
Imagine 2 objects that start rolling down a hill. Pinewood derby cars, etc for instance. Starts off steep then the hill tapers off.

One car is like a brick, the other is light as a feather (or leaf).. which one is going to continue to roll further once it flattens out? If you were to maintain that momentum, the heavier object you want to keep rolling. Which is why you see these 2-3 mile long trains being pulled by a few engines.. takes forever.. but get that momentum rolling and you're golden.

I'm sure you guys know more all about the torque curves and power outputs of the Tesla motor vs. Nissan,etc,etc.. but the Rav being a SUV can do 65-70 and maintain 4-5kw/mi if flat.. Just stop and go kills it.

I think the Leaf and the platform is great for the city.. but long distance cruising would need a makeover.

EDIT: I do agree though.. more weight = more energy. but hopefully in more batteries! :D
2012 10kw Dual LQ cooled Brusa powered Leaf "Astro"
13kw Enphase System,SolarWorld Panels, QuickMountPV- ALL USA!!
2014 Rav4 "SuperRav"with JdeMO (CHAdeMO)
2015 MS-70D

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TonyWilliams
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Re: Nissan e-NV200 Concept

Mon Sep 22, 2014 3:43 pm

JasonA wrote:
drees wrote:
TEG wrote:I think the idea that extra weight providing useful momentum may be a mis-characterization. If you like "coasting" behavior I think that is programmed in based on regen algorithms more than some benefit of extra weight.

Yep, all else being equal a lighter vehicle will be more efficient than a heavier car, even on the freeway.
Imagine 2 objects that start rolling down a hill. Pinewood derby cars, etc for instance. Starts off steep then the hill tapers off.

One car is like a brick, the other is light as a feather (or leaf).. which one is going to continue to roll further once it flattens out? If you were to maintain that momentum, the heavier object you want to keep rolling. Which is why you see these 2-3 mile long trains being pulled by a few engines.. takes forever.. but get that momentum rolling and you're golden.


How much energy did it require to get the heavier pinewood derby car to the top of the hill versus the lighter car?

There is more potential energy in the heavier car, because more energy was used to put it there.

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drees
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Re: Nissan e-NV200 Concept

Mon Sep 22, 2014 7:13 pm

TonyWilliams wrote:How much energy did it require to get the heavier pinewood derby car to the top of the hill versus the lighter car?

There is more potential energy in the heavier car, because more energy was used to put it there.

Exactly. If you're going down hill, then yeah, a heavier vehicle is likely to be better. But what happens when you need to go back up hill?
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chuhouse2003
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Leaf Number: 308718
Location: Los Angeles

Re: Official Nissan e-NV200 thread

Fri Oct 10, 2014 10:12 pm

Image
Sent them an email and this is their respond.

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DNAinaGoodWay
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Re: Official Nissan e-NV200 thread

Sat Oct 11, 2014 7:14 am

It'll come. Hopefully, when it's built here, with 150-200 range, and competivly priced.

But here's what I'd like:

http://www.hillsideleisure.co.uk/blog/e ... campervan/
'12 SL last reading @ 2 yr, 22k, 260 GIDs, 62.35 Ahr

'15 SV w/QC, Mfd 5/14, Leased 8/14, 292 GIDs, 64.38 Ahr when new
@ 36 months, 34k, 270 GID, 57.49 Ahr

'17 Bolt LT



6.72 kW Array

edatoakrun
Posts: 4745
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Leaf Number: 2184
Location: Shasta County, North California

Re: Official Nissan e-NV200 thread

Mon Apr 13, 2015 9:25 am

e-NV200 sales beginning to hit significant figures in some markets, for example, by outselling the LEAF by 172 to 73 in Denmark last month:

http://ev-sales.blogspot.com.au/
no condition is permanent

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DNAinaGoodWay
Posts: 2751
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Leaf Number: 23156
Location: Central Massachusetts

Re: Official Nissan e-NV200 thread

Fri Jun 12, 2015 3:29 am

Available in UK in July with 7 seat option.

Comes with full size spare.
'12 SL last reading @ 2 yr, 22k, 260 GIDs, 62.35 Ahr

'15 SV w/QC, Mfd 5/14, Leased 8/14, 292 GIDs, 64.38 Ahr when new
@ 36 months, 34k, 270 GID, 57.49 Ahr

'17 Bolt LT



6.72 kW Array

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