jray3
Posts: 1650
Joined: Tue Dec 06, 2011 1:05 am
Location: Tacoma area, WA
Contact: Website

Let the Hacking Begin: Cruise Control

Thu Apr 09, 2015 5:41 pm

Courtesy of the Aussie i-MiEV list, here's a german aftermarket kit for cruise control.

http://www.ebay.com/itm/Waeco-MS-880-Ma ... 0776522917

Anyone want a $440 cruise control?

The IRS has taken away my mad money for a few months... :|
2012 i-SE "MR BEAN" 105,400 miles
2000 Mazda Miata EV, 78 kW, 17 kWh
1983 Grumman Kurbwatt EV,170 kW, 32 kWh
1983 Mazda RX-7 EV 43 kW 10 kWh
1971 "Karmann Eclectric" EV 240 kW 19 kWh
1965 Karmann Ghia Cabriolet

jsantala
Posts: 296
Joined: Fri Sep 12, 2014 9:32 pm
Location: Finland
Contact: Website

Re: Let the Hacking Begin

Tue Jun 02, 2015 3:51 am

Hey, that Waeco product seems very nice! Unfortunately it doesn't come cheap. It would really help on longer journeys though. To me driving slow has never been a problem, if I've had a Cruise Control I can set to a some slow speed or a speed limiter, but trying to keep something like 55mph on a vehicle which would like to go just a little faster all the time is hard without Cruise.
kWsaki.com / EVs: Nissan Leaf 2012, Citroën Xsara 1997 (conv. 81V & 8" Series DC) and Kawasaki GPX750R 1987 (conv. 87V & ME1003 PMDC) / Used to have a Citroën C-Zero 2011

rmay635703
Posts: 81
Joined: Wed Mar 19, 2014 5:23 pm

Re: Let the Hacking Begin

Wed Jun 03, 2015 3:38 pm

Enginer :(

What I would like to see from this company or really any like enginer is specifics on where they are tapping so the car will accept extra current, I could care less about the inverter that fails.

Get the worlds most efficient 5kw diesel genset
http://www.centralmainediesel.com/order ... yanmar_4kw

And enjoy 80mpg at low speeds, the head can be wired for any voltage so proper output can be controlled in an analog fashion without risk of failure or any complex controls, could also eliminate the risk of overcharging in the same fashion.
(aka can't output power above a certain voltage threshhold)

JoeS
Site Moderator
Posts: 3749
Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Let the Hacking Begin

Wed Jun 03, 2015 9:28 pm

rmay635703 wrote:Enginer :( What I would like to see from this company or really any like enginer is specifics on where they are tapping so the car will accept extra current.
They tap in at the feed from the battery to/from the motor controller. Enable everything after the car is turned on. The car then thinks the power source is merely regen and the car's normal operating system is unaffected. The auxiliary power source is self-contained and independent of the car. My take on this is that the source voltage should be somewhat under 360vdc so as not to interfere with the overvoltage limiting routines. BTW, I thought that Enginer had been out of business for a few years, but I just visited their website and it looks alive. Their Leaf product was evidently still buggy as a local Leaf owner had the thing taken out of his car due to problems.
rmay635703 wrote:I could care less about the inverter that fails.
Don't understand that statement.
rmay635703 wrote:Get the worlds most efficient 5kw diesel genset...
I thought the name of the game is to get us off fossil fuels, which is why we have a BEV. :mrgreen:
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

wmcbrine
Posts: 386
Joined: Wed Apr 29, 2015 10:26 am
Location: Laurel, MD
Contact: Website

Re: Let the Hacking Begin

Thu Jun 04, 2015 1:21 am

JoeS wrote:I thought the name of the game is to get us off fossil fuels, which is why we have a BEV. :mrgreen:

+1

PV1
Site Moderator
Posts: 2992
Joined: Fri Apr 27, 2012 4:22 pm
Location: Pittsburgh, PA
Contact: Website

Re: Let the Hacking Begin

Thu Jun 04, 2015 4:09 am

Well, there is B100 biodiesel which contains no Dino juice. Still, a suitcase pack is a better option, IMO.
:idea: :idea: :idea: :!: :!:

Dropbox maintenance in progress. If any of my links aren't working after November 17, please PM me and let me know which one isn't working.

Thanks.

rmay635703
Posts: 81
Joined: Wed Mar 19, 2014 5:23 pm

Re: Let the Hacking Begin

Thu Jun 04, 2015 2:38 pm

For a drive across the country a cheap 130lb diesel genset is a better option. (if such a thing existed)

jray3
Posts: 1650
Joined: Tue Dec 06, 2011 1:05 am
Location: Tacoma area, WA
Contact: Website

Re: Let the Hacking Begin

Thu Jun 04, 2015 3:41 pm

rmay635703 wrote:Enginer :(
Get the worlds most efficient 5kw diesel genset
http://www.centralmainediesel.com/order ... yanmar_4kw
And enjoy 80mpg at low speeds,..


Yup, because low speed is what you'd have to average with only 4500 continuous Watts available. 15 kW is more like it for long highway use. Besides, this 10 hp Yanmar genset weighs 165 lbs without extras like oil, water, and fuel..... That happens to match the dry weight of a 67 hp aircooled VW engine...

Hence the pusher trailer... (which weighs about 240 more than 165 lbs).

Another downside of genset use is the risk of excessive amps into the battery during regen, though not a big risk given our 33 kW max regen.
2012 i-SE "MR BEAN" 105,400 miles
2000 Mazda Miata EV, 78 kW, 17 kWh
1983 Grumman Kurbwatt EV,170 kW, 32 kWh
1983 Mazda RX-7 EV 43 kW 10 kWh
1971 "Karmann Eclectric" EV 240 kW 19 kWh
1965 Karmann Ghia Cabriolet

Aerowhatt
Gold Member
Posts: 444
Joined: Wed Jan 28, 2015 1:52 pm

Re: Let the Hacking Begin

Thu Jun 04, 2015 5:10 pm

jray3 wrote:Another downside of genset use is the risk of excessive amps into the battery during regen, though not a big risk given our 33 kW max regen.


I agree with you about the diesel genset. Bad choice of fuels in my opinion.

For a generator based range extender you need something purpose built to output DC regulated to around 360 volts or a bit less. Set up this way it couldn't overcharge the pack and too many regen amps would not be an issue because amps from the generator would drop as the cars motor regens, upping the apparent battery voltage. Most of the power from the generator would go straight to the motor controller over the top of the battery. Putting little stress or heat into the battery (less than driving without it). The systems shouldn't even see it for the most part since the i measures power in and out of the battery pack, at the battery pack. You would likely see some astronomical RR figures after a conventional recharge. But other than that it shouldn't effect the systems.

Then the question becomes how long does one want to cruise on the highway anyway. I prefer about 350 miles max in a day and would do 500 if needed. So at 500 miles that's about 8 hours time behind the wheel if you can average 65mph or 70mph. To my mind that is a worst case scenario (power consumption wise) to design around. It simplifies things if you actually do use the battery during the trip. Very slowly, but depending on it for some of the power. An educated guess 11Kw or 12Kw output would be just about right for a DC genset.

Aerowhatt
(July) 2014 cool silver ES, acquired new 4/2015 (40.9ah at ~34K miles)
(Aug) 2014 Labrador Black Pearl ES, acquired new 3/2016 (39.7ah at ~20k miles)

PV1
Site Moderator
Posts: 2992
Joined: Fri Apr 27, 2012 4:22 pm
Location: Pittsburgh, PA
Contact: Website

Re: Let the Hacking Begin

Thu Jun 04, 2015 6:00 pm

I've done some measurements and math on this. With 25 amps coming from a generator (roughly 8 kW), I could do 45 mph continuously, or 60 mph for a few hours. The funny thing is, the average speed is nearly equal or lower by going faster, you spend more time sitting and charging, especially given that the car will shut down charging if it sees more than 5 kW going into the battery while plugged in, so that pretty much does away with running the generator with a charging station.

The other problem, custom DC generators at this voltage are expensive.

Isn't there an entire thread dedicated to range extenders?
:idea: :idea: :idea: :!: :!:

Dropbox maintenance in progress. If any of my links aren't working after November 17, please PM me and let me know which one isn't working.

Thanks.

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