2x/3x/4x Milage and Speed?

[Oxygon]

I was just thinking of this recently again...

its sort of an old idea, I never really gave it much thought...

I was thinking of an in-axle near-mount motor...

If a car was going (lets say) 10 MPH and the car was getting "so and so" milage...

How would the addition of an In-Axle Near-Mount motor affect the output/milage of that vehicle???

For every single rotation the motor puts out on the axle/wheel itself the electric motor would rotate the wheel one extra rotation...

Meaning that your top speed would double...

or triple... depending on "I.A./N.M." settings...

I believe that this in-axle/near-mount motor could also lessen even more the impact of the start and stop consumption of energy of city vehichles...?

Althougth the idea could be misused... car chases etc...

But a governer could be installed... any tech can be abused...

how is this idea different from a hybrid we see today?

Am I on to something...?

Could this idea be integrated into the new performance hybrids...?

[ken_behrendt]

It's an interesting idea, but then one must contend with the extra mechanical/electrical complexities of supplying electricity to a rotating structure. An of course, there is the problem of housing the electrical motor in the axle.

I do, however, see one possible additional benefit of your concept. When it comes time to stop the vehicle, the electric motor's wiring could be reconfigured so that the axle motor would function as an electrical generator. The kinetic energy of the vehicle could then be converted into electricity as the car was being braked and that electricity would be stored in a battery to later be tapped to accelerate the vehicle again. This is known as a "regenerative" braking system. I think it's been tried successfully with various limited production vehicles, but no one has done it using an in-axle electrical motor/generator design.

ken

[Fletcher]

Oxy, you might have to give a bit more detail about how this setup would work for me to understand you. It sounds like the diesel/electric locomotives of old. A diesel motor makes electricity that then drives the electric engine which drives the wheels. The advantage is far higher torque for pulling & gears are not required.

[rlortie]

I agree with Fletch, What oxy is talking about is better known as a traction motor that consumes high amps at low volts and is exactly how a diesel-electric train locomotive works.

This is not exactly what I would call a new concept as the old trolly cars with the overhead pickup were driven in such manner. Before my computer crash I had a patent file for such a motor dated 1894.

The regenerative cycle that Ken mentions is referred to as dynamic braking in a locomotive. They run the motor as a generator through a low resistance shunt which puts a load on the motor as it generates. Where as a hybrid uses batterys this generated energy is fed back to the source.

for a little extra trivia, traction motors have always been DC operated, some of the newer locomotives are using AC. I am not sure as to the advantage but figure it is more cost effective to power an alternator over a generator. The pulsed current may also add bottom end torque to the motors.

Ralph

[Oxygon]

Ok, sorry for not giving a picture...

Fletcher, I now that large deisel locomotives operate like you desrcibe...

I was looking toward something like a long column like structure... but then It struck me that this idea would be more fesable as a "motor in hub" type design... like here...

http://www.hubmotors.com/

only for attachment to a larger vehicle...

So this idea would add instant and powerful torgue and double if not quadruple the top speed of any vehicle...

Since we still maintain the traditional gas-powered powerplant as the main provider of locomotion, I assume we don't have to worry much about unsprung weight...??

I just dont think the idea has been... built yet... (least not that I've heard of)

It would increase overall torque and multiply top speed...

For every single rotation the motor puts out on the axle/wheel itself the electric motor would rotate the wheel one extra rotation...

I think the obvious nature of the above underlined sentence and the quote from the first post give the idea enough power to be a realistic expectation...

Maybe just another evolution of technoligal hybridization...

p.s. - I would just like to note here that there are hub-motor powered vehichles out there... but I am talking about integrated hub motor tech in tandem with gas-powered tech... as a limited propulsion enhancer, the operation of the gas powered engine could supply the engines axle and the motor at the same time, with of course a large set of compacitors, etc... I dont know if batteries would be needed given the already rotating axle and the doubling affect of RPM for each electric RPM in addition to the axles pre-existing RPM... I mean one extra rotation cant be that power hungry, yet it doubles the Overall RPM...


think about it, the axle and motor hub are already turning and then you just add a rotation to the wheel... doubling speed.

the only drawback I could see is weight corcerns, but it doesnt seem to be much of an issue with "hub-motor" ONLY vehicles...

One additional RPM to the wheel/motor/hub and you multiply the speed and increase available torque..

the idea could also generate energy... as in braking...