uniform throughout the mixture

chemically correct mixture

about 3-5% rich mixture

about 10% rich mixture

instantaneous and rapid burning of the first part of the charge

instantaneous atuo iginition of last part of charge

delayed burning of the first part of the charge

reduction of delay period

controlling valve opening/closing

governing

injection

carburettion

minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

temperature at which it solidifies or congeals

it catches fire without external aid

indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off

SEA 30

SAE 80

SAE 50

SAE 70