What type of energy does the flywheel store and release to smooth engine operation?

The flywheel is designed to store and release energy in the form of kinetic energy. It achieves this by rotating at high speeds, which allows it to capture energy during those moments when the engine produces excess power, like during acceleration. This stored kinetic energy can then be released back into the system to help maintain a consistent engine speed and smooth out fluctuations in engine operation. This functionality is crucial in preventing stalling and ensuring that the engine runs efficiently.

In contrast, chemical energy refers to the energy stored in the bonds of chemical compounds, potential energy is related to the position or configuration of an object, and mechanical energy encompasses both potential and kinetic energy associated with the motion and position of an object. None of these types accurately describe the specific way a flywheel operates in terms of smoothing engine performance. Thus, kinetic energy is the correct choice as it directly relates to the motion and rotational energy stored in the flywheel.