Kinetic Energy Recovery System For Vehicles (FTF 2008)

[valveman12]

Your English is surprisingly good. I expected more of an accent. You were well spoken. Nice project!

[Ixionic]

I think you should look for a private investor and start your own company, What you have done here has huge potential and the world should benefit from your discovery. Private investment in the amount of $1 Million or $10 million could have you building your own cars with this technology just like Tesla Motors.

[mojokiss]

this is fun stuff to think about. watching this i wonder if a simple system would work with several springs working together which each have different resistance... a completely different idea i know, and mostly mechanical. this makes me think of my dad's old truck that has two different tension of springs in the shocks - one strong and one more flexible. The more flexible takes the initial energy, and the more strong takes energy beyond that. I like this basic idea a lot. Thanks for this demo

[tf73ky]

How much energy can that torsion spring store? (In Joules)

[baljeet88]

very well done, lot more need to be done,thumbs up for the future

[vexedrex555]

hey china man, build a ufo, not a bike

[ufoengines]

How about using a big rubber band?

[TheAlarmbell]

so it didn't work then?

[utubeisadrug2me]

Congratulations from INDIA..

[utubeisadrug2me]

AWESOME..



[mptrax]

GREAT IDEA ! Congratulations from Italy !

[csfreak89]

ah tiong :) huang shang!!! ohhhh

[carlosepech]

It looks great, shame you did not get money for a second prototype.

[ronmann606]

3:40 when you tooted!?!

[bangzilla]

does it bug out when u go up and down hill?

[Ebdan88]

Nice Job...:-) GOD BLESS YOU .... SHOW THE EVIL Mother FUCKer New World Order that GREED, and Corruption and Evil is not enough. People like you, good people who actially do something for the world should be prased....GOD BLESS YOU ALL.............Fuck NWO.......

[miztaangeluz]

bla..bla...

[dtihkse]

so basically, it's a pullback action bike? is that it? lol

[Lecandotnet]

can you edit to fix the audio problem ?

[IvoOtRila]

u lost u time soon all car will be elecric :)

[deanboful]

What is the rate of efficiency achieved so far?

[fireicer]

well done great prototype impresive

[highonlife1294]

his voice bothers me.

[GTElwood]

@highonlife1294 I'm sure that your spoken Chinese or Mandarin is a loooooooot exciting.

[manoftnuva]

Why I let myself to waste the time on it ???

[johncarl43447]

this is not a fail it can save a great deal of energy every time you slow down , it is a wonderful idea!

[johncarl43447]

great idea !

[scarvind]

Well done guys... Superb attempt!! Could u explain a bit more about the exact use of the microcontroller and accelerometer...

[trwsandford]

very cool!

have you made a secondary prototype?

[ripriprichard]

No. Due to limited resources, we didn't continue this project.

[Merlin5by5]

@ripriprichard

EXCELLENT. Good luck with your Engineering.

PLEASE make sure you provide yourself with proof of dates this was done,

the Spring as energy storage, and the CVT transformation of torque. A

simple mail to yourself will do. Did you try to patent or copyright anything?

[fuunguus]

Using this as a breaking system for trains and buses would save a lot of energy! Vehicles uses the most energy when they accelerate or go up hill, this system could save down hill energy for later use when the vehicle has to go up hill again, and when the vehicle is stopping it could save enough energy to be on the move again! It would be almost like the vehicle was going on a flat road, never stopping! Great idea!

[mosle123]

fix up the sound, other than that it was very informative.

[SlidewaysWoofy25]

FAIL

[canaanav]

I would have forgon the transmission and springs and used a mechanical induction flywheel. The microcontroller would run a magnetic coupler from the drive wheels to the fly wheel.

[trwsandford]

A flywheel is simpler, sure.

But this idea stores the entire energy transferred to be released on demand.

This warrants more study. I hope they continue!

[RoboTekno]

cool stuff

[NEVERSTOPJAMIN]

OR... Where you just trying to give an example of the ELECTRONIC concept and merely using the torsion spring as a simple means of explaining the idea?

[ripriprichard]

Thanks for commenting. What you've seen in this video is just an explanation of the concept. In real application, a gear box would be the answer to your doubt. Just think, engine only runs in one direction, but the car could be driven both forwards and backwards. Same for the coil, with the gear box, you can store energy and release it while keep going forward.

[NEVERSTOPJAMIN]

Thanks for that! Well done, shame you couldnt find a suitable flywheel though... I`m very interested to know how a small simple flywheel at 60.000 rpm can give an added EIGHTY bhp to an F1 car.. I would of thought the power gained would be insignificant compared to an f1 engine. Why doesnt the smallist amount of strain on a small free running flywheel bring it to a halt instantly?... if you could explain it i`d be very grateful! Just shows I could never do what you have done!

[ripriprichard]

The energy stored in a flywheel may not be as small as you think. According to the physics, rotational energy = 1/2*moment of inertia*(speed of rotation)^2. So even though the flywheel looks small, at a high rotation speed, it may store quite a lot of energy. If you have the specs of a flywheel, you can try to calculate the exact amount. I am not very familiar with the details of KERS. That's the explanation I could think of. Thank you for your interest.

[oscar664]

The problem with the flyweel is the friction. you only can storage energy for a short time where as in the spring or batery u dont have that problem.

[NEVERSTOPJAMIN]

Am I being THICK?

How can a torsion spring setup work in a practical situation - as in - storing energy when slowing down and releasing when speeding up.. this system only seems to coil the spring, and then uncoil it, which means you would have to

REVERSE your car to store it, and then as the spring uncoils ,it moves you the opposite way - forwards. Isnt this just a forwards/backwards motion? how does it store energy while movin forwards to release it in the same direction - moving forwards?

[anzac68]

One word, gearing.

[Carus0e]

Does your car need a separate motor to go in reverse?

[AnThOnYrox8]

no its the gears that make it do that, when the reverse is engaged the gears change in positioning so the motor will ru in the same direction as before but the gears when transfering energy to the wheels will make it run in reverse

[gazmic]

does it only come in green?

[joh73]

good job man . ps...great inventions begain by great ideas ....keep it up man :D

[D64L34n0]

Good work !!!

[Kruhomir]

Nice explanation and good idea. Keep on the excellent work.

Special effects will not help this video in any way. It's the idea that counts and nowdays you don't see many of theese.

Thank you!

[williamjamesfrost]

well done !

[TAXCHEAT]

ha wha electric what kinetic ha ammm yeee i got it its a electric ammm... yeeee thats it thats what it is... good job boys may cum in handy .. for them peoples..!

[kiasu01]

sweet project, is this your final year project in NTU?

[TCSC47]

Good project and good presentation of your ideas. Well done.

[jbre44]

Very interesting, Good luck with your project and thank you for sharing.

[Gonzorrr]

Eeehm.. use some special effects in your Video...

[LowStackTom]

what a load of bull. whats the electronics and computer for ? store energy in springs???!!! professor: do u try to teach us elementary physics for 8 year olds ?

[ripriprichard]

firstly, i am not a professor. and the electronics are meant for precise control. without the control, it will be no different from a toy car. the prototype isn't very convincing as after all, 4 college students and one mounth of time wasn't that magical... and lastly, sometimes, good inventions come from simple applications of elementary physics as well. what matters is how you use your knowlege, not how complicated your knowlege is.

[immoham]

dude, you're a total moron.  if you didnt understand the video (and the underlying concepts of variable transmission governed through an accelerometer) then you're a dumbass of the highest calibre to berate the work of these students.

Richard - as an engineer, i am impressed by your work. As you said, it is merely a proof of concept, but dont let idiots like Tom bring you down. Good work!

[dariusman]

hummm, that's what my first little toy car did! you push it back, it will speed up till it crashes anything :D

congratulations for your work ;)

[greenmotorsport]

I enjoyed your clip.

[rebelzorrr]

really nice!

[bluanvil1]

I hate to be overly critical, however this same effect can be accomplished with just springs. Doing without the over engineering with all of the electronics. The springs are not a consistent resource of stored energy. A flywheel would give you consistent results through the entire life of the unit. I also feel that the mechanical aproach is the wrong direction as it also lends itself to failure where electrionic works would prove superior. A good source for a flywheel would be the junkyard!

[1100tech]

besieds that as a spring is used it

s tension rate changes requiring MORE frequent servicing!AND replacement ! good idea, BAD implementation! the store of energy from the wheel generator could act on the rotor for acceleration as well. the spring is early 1900 technology! processors and electrical devices are NOW!

[ripriprichard]

thank you for your comments. actually there were lots of constrains when we were working on this project. we first thought of flywheel, but couldn't find the proper resource. using the spring is our second choice. the main theme is mechanical way to recycle energy, highlighting the electronic control mechanism, as this was meant for a electronics competetion. thank you again for your opinions.

[papybenton]

Did you test your system without the mircocontroler? I think,it work as well as in the video in open loop. It looks like a toy for children (you know the car with in a spring inside!!!)

Keep working!!!

[ripriprichard]

Hi, thanks. You do have a good point. I have thought about this too. I think the effect of the microcontroller will only show after the whole system is well tuned. But sadly, our project work stopped after making that video, because soon after, we started our internships, and also, some car companies are working on the similar thing for F1, called KERS. So let's just wait and see what KERS can do...

[papybenton]

I know how KERS run and it run very well. I am working in such application Field for automotive. I am not saying that it isn't possible to store energy into a spring. I just say that I don't see in our video any CVT. And When your system Run, it looks like a" Second order". So I think that your spring is directly connected to the well.

If it is, I don't understand how you are able to choose when you store the energy or not.

[ripriprichard]

It looked like "second order" because we didn't have enough time to tune the system before the deadline.

And to be able to control when energy is being stored or released, a two way gear box or clutch is needed. So you can decide when and which way to connect the spring. But this mechanical part is too complex for us to build, so we didn't include in our prototype. In our demo, we assumed the vehicle undergoes braking and immediately followed by backwards acceleration.

[1100tech]

a mechanical system like this is prown to failure and a MUCH better system to the braking system and MUCH lighter is the "Magnetic /repulsion braking" where you use a reverse magnetic field to preform braking manuevers it's ALOT more precise and easier operate and electrical generator could be put on the wheels and by generation of electricity and a magnetic field acting on a rotor/armature it's intensity and precise application could be implemented

[ripriprichard]

you are right about it. but both techniques have their limits. regenative brakes are not perfect either. they are less effective at low speed, simply because there isn't enough electromagnetic force acting on the rotor when it rotates at a low speed.

[FongSayYukTjai]

IT's LI ! :D AHAHHAHA

[budbundy87]

these guys are smart :) it reminds me of the little pull cars i used to play with when i was a silly kid :). This is something toyota f1 should use if they want to win a race this year. Great video and great idea

[gasparem16]

I was not impressed until the end of the video...it's truly remarkable that your machine advanced until it reached the position where it was release... high efficiency...CONGRATULATIONS!

[Andras11]

How impressive is this, excellent presentation and think the way the system was prototyped is truly remarkable. Just love the tilt circuit.

Nice work !!

[nyst8ofmind]

Great Work!!

[MarbA917]

good work

[berrytom]

Excellent explanation and demo of KERS. Keep up the great work.

[thehenrychannel]

Very good video. We can learn more about KERS to understand the new Formula 1 cars.

Visit the blog. Thank You.

[zbyszekz77]

Very good engineering work from Nanyang Technological University. I enjoyed the show.

[panoramacat]

very good!

[bny26]

bump!!