When using gasoline in an engine, the distillation temperature of the distillate is very important. This is because distillate components in different temperature ranges have different combustion and volatility properties that have a direct impact on engine performance and combustion efficiency.

The gasoline used in engines is obtained by finely controlling the distillation temperature. Specifically, virgin petroleum is fractionated in a fractionating tower during the refining process to obtain distillate components in different boiling point ranges. These distillate components include light hydrocarbons with low boiling points (e.g., alkanes and olefins) and heavy hydrocarbons with high boiling points (e.g., aromatics and saturated hydrocarbons). Of these, automotive engines require the most suitable light hydrocarbons.

The distillation temperature of the distillation range determines the content of the different components in gasoline. Distillation components in the lower temperature range (e.g., light hydrocarbons) have lower boiling points and better volatility properties, which facilitate cold starting and mixture formation. This is important for engine start-up, idling and combustion under low load conditions.

On the other hand, fraction components in the higher temperature range (e.g. heavy hydrocarbons) have higher boiling points and poorer volatility. These components are prone to deposition and carbon accumulation in high temperature environments, which negatively affects the combustion efficiency and operating stability of the engine. Therefore, by controlling the distillation temperature of the distillation process, the content of these harmful components can be reduced and the quality of gasoline can be improved.

In conclusion, the significance of the distillation temperature of the distillation process for use in engines is to optimize the composition of the fuel and ensure proper volatile energy and combustion performance, thus improving engine performance, combustion efficiency and reliability.