in which cars the three way catalytic converter does exist?

Question

i wanna know the car type and model that uses the three way catalytic converters

Answer 1

Three way means thats it uses a three steps to clean the burnt fuel. Since 1981 we have been using 3 way catalytic converter

 

1. Reduction of nitrogen oxides to nitrogen and oxygen:

2. Oxidation of carbon monoxide to carbon dioxide: 

3. Oxidation of unburnt hydrocarbons (HC) to carbon dioxide and water: