delay in ignition

loss of power

over heating of engine

over cooling of engine

n - heptane

iso - octane

benzene

alcohol

higher

lower

same

depends on fuel quality

bigger flywheel

smaller flywheel

same size of flywheel

no flywheel

automatic ignition of the charge at the end of compression

ignition induced by the passage of a spark

ignition of the charge before the passage of flame front

ignition induced to supplement the process of normal combustion