Exhaust gas neutralization

When fuel is burned in an engine, exhaust gases are produced. Their composition is varied.

carbon monoxide (SO). It is poisonous in enclosed spaces, in air, combining with oxygen, it forms harmless carbon dioxide. It is measured on cars with a gasoline engine when checking the toxicity of exhaust gases. The reduction in CO content is achieved by controlling the parameters of fuel injection and ignition timing, as well as the uniform distribution of the working mixture in the combustion chamber.

hydrocarbons (CH). Unburned fuel particles. Their content depends on the design of the engine (constant). In addition, a very rich or lean mixture increases their emission. Together with carbon monoxide, they contribute to the formation of smog.

nitrogen oxides (Nox or NO). Formed at high combustion temperatures. High concentrations irritate the respiratory system. Reacts with water to form nitric acid (acid rain).

Sulphur dioxide (SO2). Formed in small quantities on diesel engines. The reason is the sulfur components contained in diesel fuel. Under the influence of light, sulfuric acid or sulphurous acid is formed.

In addition, about 0.9 liters of water is obtained from one liter of fuel, which is imperceptibly removed through the exhaust system due to the high calorific value. In winter, after starting a cold car engine, you can often observe white smoke appearing from the exhaust pipe - the formation of condensate.