what is use of flywheel in i.c.engine?

Answer 1

A flywheel is required on all piston engines in order for them to function at all.
It provides momentum to force the piston or pistons through the compression stroke.
That is the only function of a flywheel.
However some designs may incorporate other functions into the flywheel i.e. clutch plate, starter gear, etc.
But all piston engines must have a flywheel in some form.
For example on most motorcycle engines the flywheel is part of the crank shaft using two weighted disks with an offset pin that the connecting rods attach to.

Answer 2

The people who have answered your question so far have done so from an automotive point of view. However your question is posted in the motorcycle category. Motorcycles do not use flywheels for starter or clutch purposes. In the typical motorcycle the flywheel contributes to crankshaft inertia smoothing out power pulses during engine rotation AND is used for electrical power generating and ignition triggering source.

Answer 3

Go with the Dest on this one(nice one Dest)----and ignore geo46er.Ever heard of a BMW Boxer twin geo?Does it ring a bell?Mine's got a flywheel, a starter ring,and,Oh yes ,a clutch a la car!Incidentally Amit M,motorcycle manufacturers have used"outside flywheels"where the flywheel was fitted on the end of the crankshaft outside the crankcase.Norton did it on their circa 1950's racer,another was Douglas on the fore and aft twin and Moto Guzzi on their racers years ago.In fact,the Moto Guzzi's looked so much like the old bacon slicers that's what they nick named them(Bacon Slicers),and indeed to this day there's a Moto Guzzi rally called"The Bacon Slicer Rally"Oh yes,flywheels stop an engine going backwards too.

Answer 4

This Site Might Help You.

RE:
what is use of flywheel in i.c.engine?

Answer 5

It serves several purposes, some of which have been mentioned:

1) Supports the ring gear for starting the car.
2) Absorbs vibration from the crankshaft. VIbration tends to be most intense at the ends of the shaft, the end opposite the flywheel ususally has a steel or rubber vibration damper.
3) Supports the pressure disk and clutch mechanism.
4) Maintaining momentum to allow smooth clutch engagement. Without the flywheel, you would need to rev the motor to 2-3K RPM in order to shift.

Answer 6

In addition to the above, the flywheel is a dampener that smooths out the running of the engine. Without it, the engine would have a lot of jerking pulses that would be hard to live with.

P.S. an automatic uses the torque converter as a flywheel, with an assist from the harmonic balancer.

Answer 7

A flywheel is on a manual transmissioned car only. They attach to the crankshaft on the engine and they engage the engine to the transmission, when you let the clutch out. The outside of it has a gear that is used to start the car.

On an automatic transmission they have what is called a flexplate and since they don't need a clutch to engage, its just used for starting the car.

Answer 8

the dest has the best explanation i would add when you have more flywheel weight your engine will rev slower and slow down slower off throttle more mass turning most sport bikes use a small amount of weight so they rev faster but when you shut the throttle you slow down quickley

Answer 9

The flywheel is between the engine and trans. It has notches for the starter gear to start the car. On a manual trans f.w. the clutch is attached, and the trans. has a shaft that fits in the f.w. On an automatic the torque converter is attached.

Answer 10

To add to what the others have said, it also smooths the up and down, hammering action of the pistons via the crankshaft, as it is converted to a rotational motion.