What is rim in flywheel?

A flywheel consists of a rim at which the major portion of the mass or weight of flywheel is concentrated, a boss or hub for fixing the flywheel on to shaft and a number of arms for supporting the rim on the hub. The following stresses are induced in the rim.

What are engine flywheels made of?

Flywheels used in car engines are made of cast or nodular iron, steel or aluminum. Flywheels made from high-strength steel or composites have been proposed for use in vehicle energy storage and braking systems.

How does the flywheel affect the performance of engine?

The heavy flywheel helps RPM recovery, allows the engine not to lug during the gear transmission. The light flywheels decrease the inertia, so it gives a quick response to acceleration and deceleration.

Why is a flywheel called a flywheel?

FLYWHEEL = Fly + Wheel or basically “A wheel that goes fast”. A flywheel is the main wheel of the motor, it used to be the one motor that turned and gave energy to all other belts.

What are the types of stresses induced in a flywheel rim?

The following types of stresses are induced in the rim of a flywheel:

• Tensile stress due to centrifugal force, σt=γv2g=pv2106MPa.
• Tensile bending stress caused by the restraint of the arms, σb=π2v2Dρn2h.
• The shrinkage stresses due to the unequal rate of cooling of casting.

What type of stresses flywheel rim is subjected to?

The tensile stress in the rim due to the centrifugal force, assuming that the rim is unstrained by the arms, is determined in a similar way as a thin cylinder subjected to internal pressure. σt = Tensile or hoop stress. Fig. 2 Cross-section of a flywheel rim.

Why flywheel is used in engine?

In automobile engines the flywheel serves to smooth out the pulses of energy provided by the combustion in the cylinders and to provide energy for the compression stroke of the pistons.

Why is the rim type of flywheel used over the disc type of flywheel?

A flywheel is a mechanical device which is designed to efficiently store rotational energy. In Rim type of flywheel, the mass of the flywheel is concentrated at the rim only i.e. not throughout the radius but only at the radius which is just opposite to disc type, thus imparting higher moment of inertia than disc type.

Should flywheel be heavy?

When it comes to choosing the flywheel weight, it is recommended that heavier flywheels are better as compared to lighter ones. Higher the flywheel weight the smoother the operation. A heavy flywheel ensures safe movement by producing more power at a steady rate.

What is the purpose of flywheel in an engine?

flywheel, heavy wheel attached to a rotating shaft so as to smooth out delivery of power from a motor to a machine. The inertia of the flywheel opposes and moderates fluctuations in the speed of the engine and stores the excess energy for intermittent use.

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