Smart cars, what are the public hazards of automobiles, and six aspects of public hazards of automobiles.

(A) Motor vehicle pollutant emissions

Automobile emission pollutants refer to automobile exhaust pollutants, fuel evaporation pollutants and crankcase pollutants. Mainly includes: carbon monoxide, HC, nitrogen oxides, PM.

1. carbon monoxide: incomplete combustion of fuel.

2.HC: the general name of various hydrocarbons.

3. Nitrogen oxides: No, No.2.

4. Particulate matter: the general term for solid/liquid particles in tail gas.

5. Visible pollutants in waste gas: smoke and dust. Particles and fog suspended in the exhaust gas flow. Block the light.

6. Photochemical smog: produced by the chemical reaction between unburned hydrocarbons and nitrogen oxide rays.

Harm of pollutants discharged by sprinkler

1. carbon monoxide: hypoxia, dizziness, nausea, headache, mild chronic poisoning, which is seriously life-threatening.

2.HC: Stimulate nasal, eye and respiratory mucosa.

3. Nitrogen oxides: Stimulate the mucous membrane and respiratory system of eyes.

4. Particulate matter: respiratory system, carcinogen.

5. Photochemical smog: irritates eyes, nose and throat and damages crops.

Secondary noise pollution

1. Noise definition

Noise refers to the sound that people don't need and want to control and eliminate with certain measures.

Automobile noise source

Harm of automobile noise

Temporary deafness

Diseases (dizziness, headache, insomnia, endocrine disorders, gastropathy, neurosis)

Safe driving stealth killer (driver's work efficiency decreases and reaction time increases)

Radio pollution

There are many wires, coils and other electrical components in automobile electrical equipment, which have different capacitances and inductances. And any closed loop with inductance and capacitance will form oscillation. Therefore, there are many oscillating circuits in the electrical equipment of automobiles. Spark discharge will produce high-frequency oscillation, which will radiate into the air in the form of electromagnetic waves, cutting the antenna of communication equipment such as radio, television and broadcasting, thus causing interference.