How many three-way catalytic converters does the Chery QQ3 have?
3 Answers
The Chery QQ3 has two three-way catalytic converters on its exhaust pipe, namely the pre-catalytic converter and the main pre-catalytic converter. Definition of a three-way catalytic converter: A three-way catalytic converter is the most important external purification device installed in a vehicle'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 of the three-way catalytic converter: The cleaning method for a three-way catalytic converter is the 'drip bottle' 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 drip bottle into the engine. The cleaning agent then exits through the exhaust pipe, cleaning the three-way catalytic converter in the process. 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 exact lifespan depends on the vehicle's usage conditions, as well as the quality of the fuel used and the driving environment.
I usually study exhaust systems. The Chery QQ3, as a small economy car, is typically equipped with only one three-way catalytic converter, which is installed downstream of the exhaust manifold and primarily treats harmful emissions such as carbon monoxide. Under China's emission standards, this type of entry-level small car is designed with simplicity in mind—one catalytic converter is sufficient to meet daily requirements. Adding more would increase cost and weight, negatively impacting fuel efficiency. For maintenance, it is recommended to inspect the catalytic converter for blockages or burn marks every two years. When replacing, using genuine factory parts is more reliable; otherwise, it may lead to excessive exhaust emissions or reduced power. In summary, the QQ3's design balances environmental concerns and economy, so owners should not neglect regular maintenance.
I've driven a Chery QQ3, and when I opened up the exhaust system during repairs, I saw only one catalytic converter under the chassis. It's not large but plays a crucial role. Once the converter fails, the car may feel underpowered or emit strong odors. Replacing it isn't complicated but costs a few hundred bucks. In daily driving, avoiding rapid acceleration at high speeds or prolonged idling can extend its lifespan. Remember, the catalytic converter isn't a cure-all—regularly check the car manual to confirm its location and specs, and don't be fooled into installing unnecessary extra parts. That's just not needed.
