Is the greater the vehicle displacement, the greater the pollution?

Compared with small displacement vehicles, displacement vehicles will definitely consume more fuel, but they are not necessarily polluted. Automobile displacement is a parameter to measure a car, which refers to the total volume of air, gas and mixed gas inhaled by an automobile engine in a complete engine cycle, and the unit is cubic centimeter (cc) or liter (L). In short, the displacement of a car reflects how big the cylinder of the car engine is. The so-called "large displacement vehicle" or "small displacement vehicle" is only a relative concept. When the displacement of a car is large, the energy released by the engine per unit time (that is, the chemical energy of fuel is converted into mechanical energy) is large, that is, the "power" is good, and the fuel consumption will be greater. There is no direct relationship between vehicle displacement and pollutant emission. Emission refers to the quality of exhaust gas emitted by automobiles. As long as the discharge reaches the standard, no matter how large the discharge is, it will not cause great pollution. It is undeniable that pollutant discharge is one of the factors leading to haze weather. However, there is no direct relationship between vehicle displacement and pollutant emission. Automobile displacement reflects the total volume of air and gas mixture in automobile engine cylinder, and emission refers to the tail gas discharged from automobile tail exhaust pipe, which contains many toxic substances, which will pollute the air and affect people's health.