Do National IV vehicles have three-way catalytic converters?
1 Answers
National IV vehicles have three-way catalytic converters. Definition of three-way catalytic converter: The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It can convert harmful gases such as CO, HC, and NOx emitted by automobile exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction. Principle of three-way catalytic converter: When high-temperature automobile exhaust passes through the purification device, the purifying agent in the three-way catalytic converter will enhance the activity of the three gases CO, HC, and NOx, promoting certain oxidation-reduction chemical reactions, among which CO is oxidized into colorless at high temperature.