What is a car's three-way catalytic converter?

[SanZachary]

The three-way catalytic converter is the most important external purification device installed in a car's exhaust system. It converts harmful gases such as CO, HC, and NOx emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Cleaning the three-way catalytic converter: The cleaning method for the three-way catalytic converter is the drip-feed method. This involves connecting a plastic hose to the engine's vacuum solenoid valve and using the air pressure in the hollow tube to draw the cleaning agent from the infusion bottle into the engine. As the cleaning agent exits through the exhaust pipe, it cleans the three-way catalytic converter. Lifespan of the three-way catalytic converter: The lifespan of a three-way catalytic converter is generally between 80,000 to 100,000 kilometers. The specific lifespan depends on the vehicle's usage conditions, as well as the quality of fuel used and the driving environment.

[BeauAnn]

The catalytic converter is a critical component in a car's exhaust system, specifically designed to treat harmful emissions. After engine combustion, toxic gases like carbon monoxide, hydrocarbons, and nitrogen oxides are released. The catalytic converter acts like a purification expert, converting them into carbon dioxide, water vapor, and harmless nitrogen. It is coated with precious metals such as platinum and rhodium as catalysts, which trigger reactions at high temperatures. It is typically located in the middle section of the exhaust pipe, close to the engine. If it becomes clogged or damaged, the car may experience poor acceleration, skyrocketing fuel consumption, black smoke from the exhaust, or even fail to start. Regular use of high-quality gasoline is essential to prevent incomplete combustion and carbon buildup that could clog it. It is recommended to inspect the exhaust system every 20,000 kilometers. Repairs can be costly—replacing a new catalytic converter may cost thousands, so early prevention is the most cost-effective approach.

[DeEloise]

My driving experience tells me that the catalytic converter is just an exhaust cleaner. Last time my car had a problem, it lacked power, burned fuel quickly, and the exhaust smelled pungent and unpleasant. The mechanic said the catalytic converter was clogged and needed replacement. It's installed in the exhaust pipe, and its core function is to convert toxic substances into clean gases. If an old car has high mileage, the catalyst inside may fail or develop cracks and blockages, requiring repairs. For maintenance, I prefer using 95-octane fuel and regularly driving on highways to clean carbon deposits; if any abnormalities are detected, I check the exhaust promptly to avoid sudden breakdowns. When replacing parts, it's essential to choose genuine factory components, as cheap and inferior ones won't last long.

[LaBrooke]

Three-way catalytic converter maintenance in simple terms: Use high-quality fuel, avoid random additives, and prevent carbon buildup. If your car's power drops or the emission light comes on, check the converter immediately. Avoid frequent short trips with constant start-stop cycles; perform regular exhaust inspections to prolong its lifespan.