The future of the combustion engine.

WOW...(only word that comes to mind)
 
Reece454 said:
I read somewhere that it has a predicted 55 mpg, 0-60 in less that 3 seconds and 0-100 in less than 6 seconds. This is truely amazing.
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Man, that sounds like the internet specs of most guys with a 12 valve Cummins.
 
transman731 said:
it won't be long before electric cars are running without a combustion engine.
bendix has been working on a system for years that has a motor on each wheel, i foresee this being the next wave of electric cars.
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Now if someone will start up a Battery Exchange Stations where you pull in, Exchange your battery and keep trucking down the road on your Family vacation tour of America, electric cars may actually take off. Imagine that, no overnight charging just to go another 200 miles.
 
mbalbritton said:
Now if someone will start up a Battery Exchange Stations where you pull in, Exchange your battery and keep trucking down the road on your Family vacation tour of America, electric cars may actually take off. Imagine that, no overnight charging just to go another 200 miles.
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http://www.reuters.com/article/2013/06/21/us-tesla-swap-idUSBRE95K07H20130621

Already happening. Tesla released video in which they swapped 2 or 3 batteries in the same time it took someone to pump about 17 gallons of fuel.
 
mbalbritton said:
Now if someone will start up a Battery Exchange Stations where you pull in, Exchange your battery and keep trucking down the road on your Family vacation tour of America, electric cars may actually take off. Imagine that, no overnight charging just to go another 200 miles.
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that is what bendix is doing, each motor applies power and braking, during the braking period it is power regenerated to the batteries.
 
mbalbritton said:
Now if someone will start up a Battery Exchange Stations where you pull in, Exchange your battery and keep trucking down the road on your Family vacation tour of America, electric cars may actually take off. Imagine that, no overnight charging just to go another 200 miles.
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transman731 said:
that is what bendix is doing, each motor applies power and braking, during the braking period it is power regenerated to the batteries.
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I'm not sure if the work is being published yet, but I know they're doing research & have implemented at a test-site to do a 'quick charge' on the Chevy Volt. The theory is you pull-in and leave fully charged in ~15 minutes.
 
transman731 said:
that is what bendix is doing, each motor applies power and braking, during the braking period it is power regenerated to the batteries.
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I figured someone WAY smarter than me was already on to this idea. But only when braking seems to be not too effective if your cruising the highway and rarely touch your brakes. Seems they could hook up alternators to each wheel that would charge the batteries as well. Not trying to imply perpetual energy, I know some is lost, but it could decrease the net loss of energy. But I bet that smart person already thought of that too.:D
 
Thanks for posting that video. Very cool!

The probably with 100% electric vehicles is battery technology does not exist to make them practical. From everything I have read, there is no technology on the horizon to do so either.
 
mbalbritton said:
I figured someone WAY smarter than me was already on to this idea. But only when braking seems to be not too effective if your cruising the highway and rarely touch your brakes. Seems they could hook up alternators to each wheel that would charge the batteries as well. Not trying to imply perpetual energy, I know some is lost, but it could decrease the net loss of energy. But I bet that smart person already thought of that too.:D
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No. Not even coming close to perpetual energy. Trying to charge the battery off the wheel that it's driving would simply result in more draw on the battery. The concept of regenerative braking is similar, though. The motor turns into a generator when you quit applying power to the terminals and start spinning the armature. Putting an electrical load on the terminals will result in a mechanical drag, hence braking. You can vary the current you send back to the batteries. Industrial motors have been doing this for years. Power put back on the lines is power you don't have to pay for. The issue that arises is that if there is an electrical failure, then you must have a mechanical backup on the braking system. How do you make one pedal handle both duties without failing and wasting the braking power available during regen by scrubbing it off with pads?
 
mbalbritton said:
I figured someone WAY smarter than me was already on to this idea. But only when braking seems to be not too effective if your cruising the highway and rarely touch your brakes. Seems they could hook up alternators to each wheel that would charge the batteries as well. Not trying to imply perpetual energy, I know some is lost, but it could decrease the net loss of energy. But I bet that smart person already thought of that too.:D
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The basic problem here is that you are generating energy to move the vehicle forward, and then parasitically draining that energy at less than 100% efficiency. If its 70% efficiency, you're using 100hp to make 70hp, so it actually works out as a loss.
 
catfishblues said:
No. Not even coming close to perpetual energy. Trying to charge the battery off the wheel that it's driving would simply result in more draw on the battery. The concept of regenerative braking is similar, though. The motor turns into a generator when you quit applying power to the terminals and start spinning the armature. Putting an electrical load on the terminals will result in a mechanical drag, hence braking. You can vary the current you send back to the batteries. Industrial motors have been doing this for years. Power put back on the lines is power you don't have to pay for. The issue that arises is that if there is an electrical failure, then you must have a mechanical backup on the braking system. How do you make one pedal handle both duties without failing and wasting the braking power available during regen by scrubbing it off with pads?
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the current prius is doing something similar. It does regenerative braking when using less than 50% pedal, and hydraulic brakes when using over that amount. basically you can use the motors to slow the car but need the pads to come to complete stop and hold it still.

Lurch830 said:
I'm not sure if the work is being published yet, but I know they're doing research & have implemented at a test-site to do a 'quick charge' on the Chevy Volt. The theory is you pull-in and leave fully charged in ~15 minutes.
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I have heard about these also. I believe they are using 480V charging stations. What i heard was full charge in 30min. If you could get restuarants to put these in, could charge the car as you eat. I also think that ~400mi should be the target distance for battery capacity. If you were going on a long trip, you will most likely stop atleast once in that distance (5-6 hr timeframe).
 
jeepinmatt said:
The basic problem here is that you are generating energy to move the vehicle forward, and then parasitically draining that energy at less than 100% efficiency. If its 70% efficiency, you're using 100hp to make 70hp, so it actually works out as a loss.
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yes and no.
Yes, if nothing else was being done with the motion created, then it would be a complete waste. However in fact the wheels are turning, so you are transferring that energy into something useful (motion). If you can likewise use the fact that a wheel is already turning to "capture" some energy back, then great.
But practically... getting it back w/o adding even more load. to where you gain more than you lose is... well... a challenge.

My vote - leverage all teh wasted energy stored up in the kids riding in teh back seat. They can't sit still anyway, give 'em some Flintstones pedals.
 
RatLabGuy said:
My vote - leverage all teh wasted energy stored up in the kids riding in teh back seat. They can't sit still anyway, give 'em some Flintstones pedals.
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LOL!

If I could harness the power in my boy's temper tantrums, I could make it to California for free!
 
RatLabGuy said:
yes and no.
Yes, if nothing else was being done with the motion created, then it would be a complete waste. However in fact the wheels are turning, so you are transferring that energy into something useful (motion). If you can likewise use the fact that a wheel is already turning to "capture" some energy back, then great.
But practically... getting it back w/o adding even more load. to where you gain more than you lose is... well... a challenge.
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I'm gonna stick with yes, as I'm only referring to the energy used for regeneration through braking. To extrapolate my example, since I think we are both agreeing, I'll explain it like this.
You have a 200hp motor. You are driving down the road at 60mph. To travel at this speed, it requires 100hp just to overcome friction, aero drag, rotational inertia, etc and keep the vehicle moving. That leaves you with 100hp "extra" on tap, but in order to generate that, you must generate another 100hp from the motor in the form of more fuel. If that "extra" 100hp is used to regeneratively brake, you have to consider the efficiency of the method of regeneration. I have no idea, so lets say 70%, since its definitely not 100%. So now you are using the "extra" 100hp to regenerate energy at a rate of 70hp (70% efficiency). So in the end, you are using 200hp worth of fuel to generate 100hp to move the vehicle and generate 70hp of charging or whatever the form of regen is. You would have been better off to use 100hp to move the vehicle, and 0 to regen, because then you would have saved the 100hp worth of fuel.

<DISCLAIMER: This does not take into effect torque surges, gear changes, deceleration, efficiency of the motor at the given rpm and throttle position, altitude, relative humidity, what color the vehicle is, whether the driver is male or female, or many other factors that cannot be accounted for using internet science. Your mileage may vary, but mine is 38.4city/43.1hwy.>
 
Every action has an equal and opposite reaction so I don't think it's been proven but a car that runs off compressed air, that has a generator at the exhaust hooked to regenerate that compressed air, maybe as close as we are right now.



And if we hooked it to our farts.... Turbo Power!
 
paradisePWoffrd said:
I have heard about these also. I believe they are using 480V charging stations. What i heard was full charge in 30min. If you could get restuarants to put these in, could charge the car as you eat. I also think that ~400mi should be the target distance for battery capacity. If you were going on a long trip, you will most likely stop atleast once in that distance (5-6 hr timeframe).
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I'm not sure what voltage they do the quick charge at, but I had a chance to see it in person. I declined since they wanted you right next to the charging station/car...I know batteries don't take kindly to a bulk charge compared to a trickle charge. The people I know that watched said the first one they hooked up only half of the audience stood there; the electrical engineers stood ~100' away.

Crawler Nut said:
A friend of mine rode in his friends TESLA the other day, an he said it was insane. No noise at all an it would slam you back in the seat.
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We have a program here at work that we can sign-out a Chevy Volt to test drive it. They want you to drive it like you would your personal car and plug it in at night (comes with an adapter for standard 120VAC plug). They're doing this with all kinds of data loggers to analyze everything. I've never driven it, but I've rode in it a few times...its so quiet its creepy! Chevy actually spec'd out tires with loud road noise so pedestrians/cyclists could hear them coming.

Cool little tidbit - The company I work for helped Chevy design the charging system for the Volt....we're also working with an auto manufacturer to design a hybrid trouble truck for power utilities' line crews.
 
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