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What happens if the automotive three-way catalytic converter is removed?

1 Answers

HaleyAnn

07/29/25 8:03pm

During the annual vehicle inspection, the vehicle will fail to meet environmental protection standards. If the inspection is not passed, the vehicle will be prohibited from driving. The following is relevant information about the automotive three-way catalytic converter: Introduction: The automotive three-way catalytic converter is the most important external purification device installed in the vehicle's exhaust system. It is called 'three-way' because it can simultaneously convert the three main harmful substances in exhaust gases into harmless substances. Working principle: When high-temperature exhaust gases pass through the purification device, the purifying agent in the three-way catalytic converter enhances the activity of CO, HC, and NOx gases, promoting certain oxidation-reduction chemical reactions. Among them, CO is oxidized into colorless and non-toxic carbon dioxide gas at high temperatures; HC compounds are oxidized into water (H2O) and carbon dioxide; NOx is reduced into nitrogen and oxygen. The three harmful gases are transformed into harmless gases, thereby purifying the vehicle's exhaust.

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