What's the difference between gasoline and diesel?

The chemical difference between them is that gasoline (8- 10) and diesel (12- 15) have fewer carbon atoms, so diesel has higher energy content. Diesel oil does not need to be ignited, and spontaneously ignites under high pressure, so it has high efficiency (in fact, the highest utilization rate is only 30%), but it is very large and noisy. Gasoline needs to be ignited, so the gasoline engine is small in size and low in noise (the utilization rate is only 15%).

The taste is different, the gasoline is pungent and the diesel is light. Different colors, light gasoline and dark diesel. The capacity is different, the gasoline is thin and the diesel is thick. There are different ignition methods on the vehicle. Gasoline is ignited by a spark plug, and diesel is compression ignition. Diesel oil has poor antiknock performance. Compared with gasoline, diesel has low horsepower, heavy pollution and black smoke, but its price is low.

The English name of gasoline is gasoline (USA)/petroleum (UK). It is a transparent liquid with flammable appearance, and its distillation range is 30℃~ 220℃. Its main components are C5 ~ C 12 aliphatic hydrocarbons and naphthenes, and a certain amount of aromatic hydrocarbons. Gasoline has a high octane number (anti-knock combustion performance), which can be divided into 90 #, 93 # and 93 # according to the octane number. Gasoline is a blend of straight-run gasoline, catalytic cracking gasoline and catalytic reforming gasoline obtained from petroleum refining with high octane number components, which is mainly used as fuel for automobile ignition internal combustion engines.