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post #1 of 13 (permalink) Old 09-15-2019, 05:32 PM Thread Starter
 
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EV with Generators

I own and drive a 2015 ICE, but driving today I was thinking about my next car and the SMART. Yes I know the SMART is being dropped, but there are deals to be had.

For someone smart about EV and SMART, Why are SMARTs battery only and not hybride, with a small gas generator on board to extend range or charge if you are in some out of the way place?

What was wrong with that idea?

Must be a reason.
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post #2 of 13 (permalink) Old 09-15-2019, 11:45 PM
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I've had this same thought. But I think there is a couple of things that would work against adding a generator. The first would be no room to put one unless it somehow sat in the cargo area. I don't know how practical that would be with heat and noise. There wouldn't be room underneath because the electric motor would probably take up too much room to leave room for a generator. The next thing would be current output. You wouldn't have enough current to keep up with battery drain while you were driving, so you would have to park somewhere for a few hours. If Smart's were made with an onboard generator would it be considered a Hybrid vehicle? Most owners buy an electric only vehicle to get away from having to buy gas and to have that quiet ride. But to despite all of this I too think that it's an interesting idea that I would like to see. I would have also liked to seen solar panels on the roof like they did for some of the electric Car to Go models.

https://www.electric-cars-are-for-gi...generator.html
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post #3 of 13 (permalink) Old 09-16-2019, 06:36 AM
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Don't think any EV will charge while running on the HV motor....

As to why the smart was never a hybrid, the gas motor location is full of the electric motor, and the fuel tank location is full of batteries.
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post #4 of 13 (permalink) Old 09-16-2019, 10:33 AM
 
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Didn't they have some kinda hybrid in Europe?
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post #5 of 13 (permalink) Old 09-16-2019, 11:20 AM
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Quote:
Originally Posted by Gberkel View Post
Why are SMARTs battery only and not hybride, with a small gas generator on board to extend range or charge if you are in some out of the way place?

What was wrong with that idea?

Must be a reason.
This has been an ongoing debate since the first 68 mile range smart ED was delivered!

The short answer, the power supplied by an ICE generator will not provide a quick nor economic charge. And, most EV's have safeguards (to save you from yourself) in place to "fault" if you try to move the smart while charging. So while it could be done, it would be slow and arduous process.

An oldie but a goodie from 2014 . . .

https://www.smartcarofamerica.com/fo...ml#post1004849

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Originally Posted by DreamCarOwner View Post
You wouldn't have enough current to keep up with battery drain while you were driving, so you would have to park somewhere for a few hours.

I would have also liked to seen solar panels on the roof like they did for some of the electric Car to Go models.
Note that the solar panels on C2G smarts and Nissan Leafs offer no charge to the HV battery. In both cases they are there to reduce the likelihood of the 12V going dead or in the case of the Leaf, provide ancillary power to an exhaust fan.

It's easiest to think of an EV as a purpose built electric appliance that is limited by "the cord." Buy the one that fits your needs and life is good!

Going into 5th year with ED and have only exceeded the design specification of 70ish miles once.

Last edited by MB DNA; 09-16-2019 at 12:21 PM.
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post #6 of 13 (permalink) Old 09-16-2019, 11:40 AM
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Originally Posted by Igor Barbaros View Post
Didn't they have some kinda hybrid in Europe?
You may be thinking of the mhd in Europe? mhd is smart-talk for a stop/start system and stands for Micro Hybrid Drive.

First rolled out in October 2007, the special belt-driven starter generator that supplied the vehicle's electrical system with voltage and had a secondary function as a starter proved to be the model's weakest link!

It was not a "hybrid" as in the style of the Prius and such.

https://media.daimler.com/marsMediaS...ml?oid=9919399
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post #7 of 13 (permalink) Old 09-16-2019, 11:51 AM
 
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Ah, the name confused me. Thanks for clarifying
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Quote:
Originally Posted by Igor Barbaros View Post
Didn't they have some kinda hybrid in Europe?
You may be thinking of the mhd in Europe? mhd is smart-talk for a stop/start system and stands for Micro Hybrid Drive.

First rolled out in October 2007, the special belt-driven starter generator that supplied the vehicle's electrical system with voltage and had a secondary function as a starter proved to be the model's weakest link!

It was not a "hybrid" as in the style of the Prius and such.

https://media.daimler.com/marsMediaS...ml?oid=9919399
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post #8 of 13 (permalink) Old 09-16-2019, 12:15 PM
 
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As mentioned the main issue is physical space.
There is not enough available space in a smart to install both ICE (Infernal Combustion Engine) and Electric Drive.

As to charging "on the go". . . The simple answer is that all factory EVs have a charger interconnect that does not allow the drive system to be engaged while charging (prevents driving away while still plugged in).

BUT, I have seen many DIY "hacks" that subvert/bypass/ignore this feature.

One TESLA owner that I know tows a camper with his Model X.
He uses the camper's onboard generator to extend the range of the Tesla while underway.
YES, it is a larger than usual genset for a small camper.
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post #9 of 13 (permalink) Old 09-16-2019, 12:29 PM
 
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I keep seeing post around the internet of people putting generators on trailers or converting an EV into a hybrid.....which defeats the whole EV "thing" by going hybrid or generators on trailers. Doing any of those things adds weight to the car, so the benefits of doing such a thing would equal it self out without many gains.

Now has anyone toyed with an idea of some kind of "electric trailer" that has its own batteries and its own electric motor that could work in tandem with the cars current setup? Instead on one motor doing ALL of the moving of the vehicle, you could in a sense have two....which could add 25% or more range perhaps? This is factoring in the additional weight of the "electric trailer" etc....but it would keep everything as a pure EV.
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post #10 of 13 (permalink) Old 09-16-2019, 01:15 PM
 
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Yes to the electric trailer idea.

I am very active in the EV community and have seen many variations of putting an extra/extended battery pack on a trailer.

I also disagree with the idea of using a generator to recharge an EV (either while driving or when parked).
Most generators are very dirty (way worse than a car engine).
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