What are the differences between diesel and 92 gasoline?

[AriannaFitz]

Here are the differences between 92# gasoline and diesel: 1. Gasoline is highly volatile, while diesel is difficult to volatilize. Therefore, gasoline vehicle pollutants include fuel evaporation emissions, whose components are hydrocarbons. 2. Gasoline easily mixes with air and is hard to separate once mixed. Gasoline and air can mix very evenly, with basically no local over-concentration or over-dilution or liquid oil droplets. Gasoline molecules are smaller. Diesel and air mix unevenly, inevitably leading to local oxygen deficiency or local oxygen surplus. When fuel is in a high-temperature and oxygen-deficient environment, it tends to carbonize and form soot. Diesel combustion produces some odorous organic gases, so diesel engine emissions also have a smell. 3. The chemical difference between the two is that gasoline has fewer carbon atoms, 8-10, while diesel has 12-15, so diesel contains higher energy. Diesel does not need ignition and self-ignites under higher pressure, so its combustion efficiency is higher, but it is very heavy and noisy. Gasoline requires ignition, so gasoline engines are smaller in size and quieter. 4. The smell is different: gasoline has a pungent smell, while diesel has a mild smell. The color is different: gasoline is light-colored, while diesel is dark-colored. The concentration is different: gasoline is thinner, while diesel is thicker. The ignition method in vehicles is different: gasoline is ignited by spark plugs, while diesel is compression-ignited. Diesel has poor anti-knock properties, and diesel has less horsepower, heavier pollution, and emits black smoke compared to gasoline, but it is cheaper.