How the 3-way catalytic converter and lambda sensor work

How do catalytic converters work?
What do we need them for?
What is a control sensor?
What do we mean when we talk about a monitor probe?
How do lambda sensors work?
00:00 Exhaust gases
00:40 Regulated three-way catalytic converter
01:07 Lambda sensor/control sensor and monitor probe
02:52 Lambda sensor models
Exhaust gas after-treatment
Raw emissions such as carbon monoxide, nitrogen oxides, sulphur dioxide and hydrocarbons are produced in the cylinders during combustion. The exhaust gas after-treatment converts these raw emissions into less harmful exhaust gases. Ideally, only nitrogen, carbon dioxide and water remain.
The classic exhaust gas after-treatment method is the “controlled 3-way catalytic converter”. Three chemical reactions of reduction and oxidation occur simultaneously here. The lambda is determined using the lambda sensor before the catalytic converter - also known as a control sensor. Taking this value as an input variable, the engine management system controls the addition of fuel to ensure efficient combustion.
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[@nguyenquocbao7938]

Thanks for the sharing, It's so easy to understand

[@romonarturoramirezespinoza4326]

Saludos desde los mochis sinaloa mexico.

[@outruzer]

The best video ever

[@motorservicegroup]

Thank you ☺

[@i.am.ghost.]

How come a "stone" reacts with smoke? What kind of chemical reaction takes place inside the catalitic converter? Dry components from exhaust gas are being trapped by that "stone" because the construction is made like. That's the reason for cleaner exhaust gas after a catalytic converter. That's the reason for the catalytic converter getting clogged and needs replacement around 80k km.