the

Flywheel - Explained

hey everyone in this video I'll be

explaining flat wheels now fly wheels

are energy storage units and I used to

keep an engine running smooth and to

keep it running when you're not giving

gas or it's in neutral now a good

analogy is a potter's wheel so if you

think about a potter's wheel to have a

little foot press they keep pressing and

it spins a large stone on the bottom and

that's that stones rotating it's

connected to a table in which they hold

the clay and they can shape and mold it

and that clay is spinning at a constant

speed and that's because of the flywheel

down at the bottom that has its inertia

and so it stays at a constant speed even

though the force that you apply is at

intervals so the same idea can be

applied to cars so cars have fly wheels

attached at the end of the engine or

attached to the crankshaft and it's the

item that will be pressed against with

the transmission so you'll either have a

clutch or a turkin torque converter and

the torque converter would be mounted

attached to the flywheel and the clutch

would the clutch plate would press

against it when you were trying to

accelerate or when you're engaging the

clutch rather so the basic idea is if

you didn't have that flywheel on there

you'd have really uneven power

distribution so I went through here and

we've got the four strokes divided up in

take compression power and exhaust so

you've got intake occurring the first

stage your compression occurring the

second stage and then you got your power

stroke so your engine's not producing

any torque when you're not in that power

stroke and then once you get to it you

have a peak of power so you'd have a

jerk if you were in the vehicle now this

is eliminated by adding this flywheel so

your torque is very even and so even

when you're not applying that power

stroke you'll have a power distribution

because of the inertia of the flywheel

maintains power so basically however if

you increase the size of the flywheel

then you can increase the smoothness and

basically level this out so you can see

there's still a little bump you could

get rid of that completely if you just

had a big enough flywheel so why would

you have a really huge flywheel since

you'll have a smoother running

and an even power delivery engine well

there's two problems really

you've got more rotational inertia if

you have a larger flywheel and that

means you've got to spin that flywheel

up and to do that takes a lot of energy

so that's just wasting fuel you're just

trying to get a flywheel spinning that's

not getting you to move anywhere second

added weight you want to keep everything

in your car as light as possible just

for handling purposes for pretty much

all purposes of the performance aspect

of a vehicle so you want to keep the

flywheel weight as low as possible but

still have even torque delivery and

that's the purpose of it now it's

difficult to show you my flywheel

because its internal but here's the

basic idea if you've got the engine here

so you've got the cylinders line across

there and then inside of this case where

there's a clutch the flywheel is going

to be spinning in here and that's

actually what starter motor will attach

to to start the engine