How many catalytic converters does the Chery QQ have?
2 Answers
There are two catalytic converters on the exhaust pipe of the Chery QQ: a pre-catalytic converter and a main pre-catalytic converter. Nowadays, all cars are equipped with catalytic converters. Only vehicles produced in earlier years that did not meet the China II emission standards lacked catalytic converters. The service life of a catalytic converter ranges 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. Composition of a catalytic converter: A catalytic converter generally consists of four parts: the shell, the damping layer, the substrate, and the catalyst coating. The shell is made of stainless steel to prevent oxidation and flaking, which could clog the substrate. The damping layer is composed of padding or wire mesh, serving to seal, insulate, and secure the substrate. To protect the substrate from damage due to vibration or thermal deformation, the padding is made of expanded mica and aluminum silicate fibers, bonded together with adhesive. The substrate is made of honeycomb-shaped ceramic material, though many also use metal (including stainless steel) materials. The catalyst consists of precious metals such as platinum, rhodium, and palladium, sprayed onto the substrate to form the purifying agent.
From a technical maintenance perspective, let me discuss the catalytic converter issues with Chery QQ. As someone who frequently works with automotive exhaust systems, I can confirm that most Chery QQ models are equipped with only one three-way catalytic converter, located between the engine exhaust port and the muffler. Its primary function is to convert harmful gases in the exhaust. This design simplifies the system structure while meeting emission standards. If the converter becomes clogged or damaged, such as from excessive carbon buildup, it can lead to reduced vehicle power or trigger the engine warning light. For routine maintenance, owners are advised to regularly inspect the converter's condition to prevent sudden failures while driving. Generally, compact cars like the QQ don't require multiple converters to operate efficiently. However, if you notice unusual odors or increased fuel consumption, it's best to promptly send the vehicle for inspection and repair.
