honda0105

Champion Author
Tallahassee
Posts:18,643 Points:1,611,470 Joined:Nov 2008
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Message Posted: Sep 11, 2012 3:16:22 PM
it's possible to get 100 mpg from and ICE, but not when driving down the road at 80 mph...
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crep1291

Champion Author
Ottawa
Posts:2,587 Points:481,455 Joined:Dec 2010
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Message Posted: Sep 10, 2012 4:25:15 PM
"It is well known that internal combustion engines have been invented allowing around 100 mpg."
Engines are not designed for 100mpg, nor any other fuel efficiency. Fuel efficiency depends on many factors external to the engine. The exact same engine placed in two different vehicles will give you very different fuel efficiency. When lutz refers to engine efficiency, he's talking about the ratio of energy being converted into movement. That's typically 20% for an internal combustion engine and it's difficult to improve this. Turbochargers and superchargers can, but they raise the cost of the vehicle and make the vehicle heavier. So will any system that generates electricity from the exhaust heat.
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URKiddinMee

Champion Author
South Carolina
Posts:1,214 Points:242,910 Joined:May 2008
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Message Posted: Sep 10, 2012 3:38:56 PM
I'm waiting to see Obozo keep his promise to drive one of these firebombs when he's out of office. I hope he's afforded the opportunity next January!
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Radar1992

Champion Author
Florida
Posts:1,335 Points:312,115 Joined:Dec 2011
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Message Posted: Sep 10, 2012 9:23:38 AM
This article as usual misses the point on the electric/hybrid vehicles...it is not the weight of the car....it is the capacity and weight of the batteries!!!!
The reason why we do not have many technological improvements have always been the lack of materials, whether it is structural or battery material.
Until the material/manufacturing engineers/scientists develop the elusive "Unobtainium" and we see improvements in battery technology then the designers only hope is to reduce the overall weight of the cars which could compromise safety and repairability after an accident...
You do not do a whole lot of carbon fiber repair...you replace it if it gets damaged.
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Grizdad

Champion Author
San Bernardino
Posts:5,540 Points:785,825 Joined:Oct 2010
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Message Posted: Sep 10, 2012 1:30:18 AM
Expected from a Seattle news outlet.
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alterman156

Champion Author
New York
Posts:7,495 Points:1,558,725 Joined:Dec 2008
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Message Posted: Sep 10, 2012 1:26:51 AM
Electric vehicles might become the norm someday.
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bginsj

Champion Author
San Jose
Posts:1,878 Points:1,236,885 Joined:May 2009
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Message Posted: Sep 10, 2012 1:06:48 AM
we will wait and see
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pgerassi

Champion Author
Milwaukee
Posts:10,906 Points:2,133,555 Joined:Apr 2007
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Message Posted: Sep 10, 2012 12:45:02 AM
BEVs are more expensive because their batteries are balanced at the top or end of their charges. Thus they have to be individually monitored and bypassed when they reach full charge before the others are. Thus they are first charged by a fast and cheap bulk charger for all hundred or so of cell groups each connected in parallel in series to get the high voltages typically used (240-360V nominal) and then due to these groups each having a slightly different capacity have to be individually charged until all are charged or discharged while the others keep charging until all are charged. The latter is quite a bit cheaper than the former, but requires the bulk charger to slow down greatly and produces a lot of heat leading to fires when components fail. And either method is quite complex and has to be done on virtually every charge.
But there is a different way which many DIYers do. They give up a little capacity on a complete charge by balancing at the bottom or beginning of the charge and just bulk charge until one cell group reaches full charge or simply to a set overall voltage below that of full charge. Sure they give up 1-10% of a full charge, but since rarely is a battery fully discharged, they only have to do a bulk charge. Thus they only need the onboard charger to be a cheap and fast bulk one leaving the slow expensive bottom balance charge to be done in the repair shop once every year or so. If the DIYer wants, they can add a cheap battery monitor that checks cell group voltages individually which puts the loss of usable capacity at the lower end of that range (1-2%) and can tell when the bottom balance is needed whenever the battery reaches the fully discharged state. But, most either simply live with the slightly less capacity or for cheaper than many battery monitors, add some additional capacity to make up the loss. This is a far cheaper and keeps with the KISS philosophy while being far more reliable.
[Edited by: pgerassi at 9/10/2012 12:50:56 AM EST]
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Bezalel

Champion Author
Oklahoma City
Posts:12,112 Points:2,292,925 Joined:Oct 2006
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Message Posted: Sep 10, 2012 12:19:24 AM
It is well known that internal combustion engines have been invented allowing around 100 mpg. I heard one was sold to Ford. There have been several. They were all buried, possibly by Big Oil.
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kgbellman

Champion Author
Ann Arbor
Posts:2,723 Points:733,790 Joined:Mar 2011
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Message Posted: Sep 10, 2012 12:16:59 AM
Let's hope they follow through
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jrschl

Champion Author
Louisville
Posts:2,977 Points:683,015 Joined:Jun 2011
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Message Posted: Sep 10, 2012 12:13:58 AM
If they say so. I mean it is going to improve, or else it will be shelved like anything else swallowed up by tech and competition.
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farn1958

All-Star Author
Twin Cities
Posts:886 Points:183,385 Joined:Feb 2011
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Message Posted: Sep 10, 2012 12:04:55 AM
and more old news
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rahcat

Champion Author
Grand Rapids
Posts:2,478 Points:664,900 Joined:Jan 2010
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Message Posted: Sep 10, 2012 12:04:50 AM
Must have a big trunk for the 100 mile cord.
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sprocketsplines

Champion Author
Washington
Posts:1,692 Points:862,590 Joined:Oct 2010
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Message Posted: Sep 10, 2012 12:04:41 AM
Need to have a pragmatic comparison of the electric car versus the natural gas car. North American drivers have become too accustomed to the gasoline powered car's range between fill-ups and the natural gas car is the one that can most likely match it.
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Dragnet

Champion Author
Arizona
Posts:15,417 Points:2,910,710 Joined:Jul 2004
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Message Posted: Sep 10, 2012 12:02:44 AM
This continues to be nothing but a major joke.
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Toppers

Champion Author
Atlanta
Posts:9,022 Points:2,472,645 Joined:Mar 2005
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Message Posted: Sep 10, 2012 12:02:40 AM
Lookin' forward to future designs
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richnc

All-Star Author
North Carolina
Posts:575 Points:209,480 Joined:Mar 2006
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Message Posted: Sep 10, 2012 12:00:14 AM
put steel plate on the roads (no more potholes) and a mesh overhead and get the off season carnival bumper cars and away we go.
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gaspumpin

Champion Author
Indiana
Posts:1,677 Points:390,370 Joined:Apr 2012
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Message Posted: Sep 9, 2012 11:59:14 PM
Yeah, but you can fill your car with gas a lot quicker than you can recharge your batteries.
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mrbee

Champion Author
Little Rock
Posts:3,768 Points:2,468,535 Joined:Oct 2005
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Message Posted: Sep 9, 2012 11:58:46 PM
Won't hold my breath.
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defiancegasman

Champion Author
Ohio
Posts:7,080 Points:1,323,260 Joined:May 2006
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Message Posted: Sep 9, 2012 11:54:00 PM
The real advances need to come in batteries, reserve capibilty and quick charge ability. With the VOLT back up generator, the batteries are not as necessary as in a pure electric car.
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rozellep2

Sophomore Author
Illinois
Posts:105 Points:576,575 Joined:Aug 2005
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Message Posted: Sep 9, 2012 11:52:40 PM
Ok
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Aviator_Rob

Champion Author
New York
Posts:3,810 Points:415,590 Joined:Mar 2012
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Message Posted: Sep 9, 2012 11:52:00 PM
Just for the record, @jrsva, charging an EV from a coal fired powerplant puts out less pollution per car than a current-generation hybrid vehicle.
Now, consider that coal is the dirtiest form of electricity generation and it's STILL cleaner than using a regular internal combustion engine.
EVs will be a huge game-changer and sooner than almost everyone thinks. 20 years ago, people were using cellphones the size of bricks that cost them $2/min to call. We've come a long way since then.
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DarthDadJr

Champion Author
Virginia
Posts:7,322 Points:1,523,370 Joined:Jul 2008
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Message Posted: Sep 9, 2012 11:51:44 PM
I don't know if I will live that long...
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kosciak

Champion Author
Hartford
Posts:1,106 Points:535,775 Joined:Aug 2011
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Message Posted: Sep 9, 2012 11:49:56 PM
Ok
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gumbyrex

Champion Author
Fresno
Posts:3,311 Points:761,240 Joined:Mar 2011
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Message Posted: Sep 9, 2012 11:49:47 PM
Just the natural evolution of the electric vehicle. I believe we ain't seen nothing yet.
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Aviator_Rob

Champion Author
New York
Posts:3,810 Points:415,590 Joined:Mar 2012
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Message Posted: Sep 9, 2012 11:48:25 PM
Actually, @sickhp, we don't need to build additional powerplants to charge all of these new EVs since much of the power grid lays dormant overnight. That's because most offices and factories power down for the night. We could replace 40% of the cars on the road with EVs before we would need to build one new powerplant.
Plus, the utilities would prefer people to use more electricity during off-peak hours since it allows their generators to run at a more constant setting, instead of having to mostly idle after dark.
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Rednix

Champion Author
Miami
Posts:6,168 Points:1,277,685 Joined:Jul 2009
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Message Posted: Sep 9, 2012 11:47:37 PM
Something to think about.
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Revup77

Sophomore Author
Nebraska
Posts:174 Points:25,005 Joined:Jul 2012
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Message Posted: Sep 9, 2012 11:47:01 PM
We need more of this.
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HA4CNN

Champion Author
Toronto
Posts:5,634 Points:1,545,440 Joined:Dec 2006
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Message Posted: Sep 9, 2012 11:45:02 PM
They're bound to get better with each passing year.
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Aviator_Rob

Champion Author
New York
Posts:3,810 Points:415,590 Joined:Mar 2012
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Message Posted: Sep 9, 2012 11:44:14 PM
Careful, @starfighter08, basic physics isn't so basic. More specifically, I mean the field of thermodynamics where a large heat source is inherently more efficient than a group of smaller heat sources. An internal combustion engine is inherently a method of converting a fuel into heat which expands a gas that drives a piston. 80% of the energy needed to propel a vehicle that uses an internal combustion engine is lost as heat.
On the other hand, electric vehicles are far more efficient since an electric motor pretty much has only one moving part. Plus, a very large powerplant can much more efficiently retain the heat needed to produce the steam that drives a generator turbine. Also, the pollution from a large powerplant is far easier to control than millions of tailpipes.
It's not basic physics. It's thermodynamics.
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carinthuist

Champion Author
San Francisco
Posts:2,255 Points:332,100 Joined:Mar 2012
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Message Posted: Sep 9, 2012 11:43:31 PM
yes more range electric cars
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libertyut

Champion Author
Utah
Posts:1,360 Points:293,575 Joined:Mar 2012
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Message Posted: Sep 9, 2012 11:43:09 PM
Bigger cars and better gas prices.
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sickhp

Champion Author
San Antonio
Posts:1,388 Points:519,035 Joined:Sep 2011
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Message Posted: Sep 9, 2012 11:42:33 PM
We need more power plants to make EVs a real option and Obama with the EPA are in the way.
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fenster66

Champion Author
Pittsburgh
Posts:3,360 Points:676,040 Joined:May 2011
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Message Posted: Sep 9, 2012 11:41:57 PM
hope to see major improvements over the next decade....
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jrsva

Champion Author
Virginia
Posts:9,863 Points:1,614,950 Joined:Jan 2006
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Message Posted: Sep 9, 2012 11:41:03 PM
EVs are not yet ready for prime time. More development is needed, including better batteries and a battery-exchange program instead of slow recharging stations. Battery exchange could be done in the time it takes to pump gas. And they make no sense unless the electricity comes from solar or other renewable source. What’s the point of burning coal to drive your car?
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joeschmo12

Champion Author
New York
Posts:1,027 Points:308,165 Joined:Mar 2012
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Message Posted: Sep 9, 2012 11:38:25 PM
I want to b hovering on the highway
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abcdMA

Champion Author
Worcester
Posts:7,937 Points:1,577,905 Joined:Nov 2008
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Message Posted: Sep 9, 2012 11:38:13 PM
lighter, as in plastic
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suicyco16

All-Star Author
Phoenix
Posts:577 Points:289,395 Joined:Jun 2012
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Message Posted: Sep 9, 2012 11:36:51 PM
light or lite?
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blazerbob91

Champion Author
Milwaukee
Posts:6,155 Points:1,885,620 Joined:Aug 2005
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Message Posted: Sep 9, 2012 11:35:29 PM
If they make them to light they will blow off the road in a stong breeze.
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randallhsmith

Rookie Author
Houston
Posts:14 Points:164,430 Joined:Dec 2011
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Message Posted: Sep 9, 2012 11:35:17 PM
not a chance...the hidden pollution will eventually get the attention of the public. That will be the end of the electric car fad. The hidden pollution
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Aviator_Rob

Champion Author
New York
Posts:3,810 Points:415,590 Joined:Mar 2012
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Message Posted: Sep 9, 2012 11:34:07 PM
A Hummer's in just as much trouble if a truck hits it at 60 mph, @gsayeg1.
Small cars are not the death traps that you might think they are. The differences are in better design and more airbags. Plus, smaller cars are more maneuverable and do a better job of avoiding accidents, to begin with.
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egd

Champion Author
Twin Cities
Posts:8,105 Points:2,121,225 Joined:Mar 2005
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Message Posted: Sep 9, 2012 11:32:47 PM
good luck
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Aviator_Rob

Champion Author
New York
Posts:3,810 Points:415,590 Joined:Mar 2012
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Message Posted: Sep 9, 2012 11:30:58 PM
A prime candidate for a plug-in hybrid vehicles are UPS and FedEx. Their delivery trucks only run during the day and sit at their distribution centers all night. They mostly drive at slow speed in traffic and make frequent stops.
That driving routine is practically tailor-made for an electric vehicle.
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5Golfer8

Champion Author
Tucson
Posts:2,148 Points:302,600 Joined:Jun 2011
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Message Posted: Sep 9, 2012 11:29:43 PM
No jobs no new vehicles.
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gsayeg1

All-Star Author
Milwaukee
Posts:794 Points:140,870 Joined:Jun 2008
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Message Posted: Sep 9, 2012 11:29:01 PM
cars are a driving disaster if they get hit by a truck going 60
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andy1024

Champion Author
Allentown
Posts:1,712 Points:450,200 Joined:Dec 2011
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Message Posted: Sep 9, 2012 11:28:20 PM
The future is nearer.
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Cableman66

Champion Author
North Carolina
Posts:2,125 Points:492,870 Joined:May 2011
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Message Posted: Sep 9, 2012 11:21:23 PM
Good lck.
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clermont40miles

Champion Author
Cincinnati
Posts:10,583 Points:1,774,595 Joined:Apr 2008
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Message Posted: Sep 9, 2012 11:21:13 PM
Expensive roller skates.
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oldiesman

Champion Author
New York
Posts:6,440 Points:2,196,695 Joined:May 2006
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Message Posted: Sep 9, 2012 11:20:57 PM
Never for me.
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drobbbb

Champion Author
Maryland
Posts:3,485 Points:813,435 Joined:Dec 2010
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Message Posted: Sep 9, 2012 11:18:33 PM
let's hope so
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