Why do trucks use diesel?.

Why do trucks use diesel?.

The commercial diesel oil is graded according to the freezing point, such as 10, -20 and so on, which indicates low service temperature. Diesel oil is widely used in large vehicles, ships, generators and so on. It is mainly used as liquid fuel for diesel engines. As the speed of diesel engine is higher than that of gasoline engine, the demand for diesel is increasing faster than that of gasoline. The environmental characteristics of diesel with low energy consumption, low pollution, so some small cars even high performance cars to switch to diesel, but because of the inferior quality of the normal operation of foreign Chinese diesel, diesel cars imported into the country may be frequent failures and even accidents.

A liquid petroleum fraction between kerosene and lubricating oil having a boiling range and viscosity. Flammable, volatile, insoluble in water, soluble in alcohols and other organic solvents. It is a mixture of complex components with boiling points ranging from 180 DEG C to 370 DEG C and 350 to 410 DEG C two. Made from crude oil, shale oil, etc by direct distillation or cracking. According to the different properties of crude oil, there are paraffin base diesel, naphthenic base diesel and naphthenic aromatic diesel. According to the density of the oil and its processing products, accustomed to the boiling point or boiling range of low, called light, on the contrary, become heavy. It is generally divided into light diesel oil and heavy diesel oil. Paraffin based diesel oil is also used as raw material for cracking ethylene and propylene, and can be used as absorbent oil.

The efficiency of the diesel engine is high, and if a large number of gasoline engines are replaced, the oil consumption rate and carbon dioxide emissions can be significantly reduced.However, compared to gasoline, diesel contains more impurities, it is more likely to smoke when burning, causing air pollution. But unlike gasoline, diesel produces poisonous gases, so it is more environmentally friendly and healthier than gasoline. In order to reduce the pollution caused by dust because, in recent years in Western European countries including cars, diesel combustion machine must be installed dust filter before use, and the oxygen sulfur compounds (SOx) pollution is also a problem. Therefore, car companies are developing technologies to reduce pollution. In order to reduce pollution, the sulfur content of diesel is also the focus of attention, for example, Taiwan has sulfur content of less than 50ppm diesel for purchase.

Diesel oil is divided into two categories: light diesel oil (boiling point range of about 180 ~ 370 DEG C) and heavy diesel oil (boiling range of about 350 to 410 degrees Celsius). The most important performance in the use of diesel is fire and liquidity, its technical indicators were sixteen octane requirements and the pour point, sulfur content control in China's current specifications in 0.5%-1.5% diesel engine.According to the classification of diesel pour point, diesel has 10, 0, -10, -20, -35 five grades, 10, 20, heavy diesel oil 30 three brands.

Because the diesel engine is more efficient than the gasoline engine, the power is large, the fuel consumption is low, and it is more economical, so it is used more and more widely. The utility model is mainly used as a power for tractors, large automobiles, diesel locomotives and civil works, excavators, loaders, fishing boats, diesel generating sets and farm machinery. Diesel oil is a complex hydrocarbon mixture with a carbon atom of about 10-22. Mainly from crude distillation, catalytic cracking, hydrocracking, viscosity cracking, coking and other processes produced by the production of diesel distillate (also refined and added additives).