Neutralization of exhaust gases (Mondeo 2)

When fuel burns in an engine, exhaust gases are formed. Their composition varies.

Carbon monoxide (CO). In closed spaces it is toxic, in the 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 of CO content is achieved by controlling the parameters of fuel injection and ignition advance, as well as uniform distribution of the working mixture in the combustion chamber.

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

Nitrogen oxides (Nox or NO). Formed at high combustion temperatures. At high concentrations, they irritate the respiratory system. When interacting with water, nitric acid is formed (acid rain).

Sulfur dioxide (SO2). Formed in small quantities in diesel engines. The cause is the sulfur components contained in diesel fuel. When exposed to light, sulfuric acid or sulfurous acid is formed.

In addition, one liter of fuel produces approximately 0.9 liters of water, which is removed unnoticed through the exhaust system due to the high heat of combustion. In winter, after starting a cold car engine, you can often see white smoke appearing from the exhaust pipe - the formation of condensate.