Where is the car's three-way catalytic converter located?
2 Answers
The three-way catalytic converter is located in the first bulge section of the vehicle's exhaust manifold. Below are some key details about the three-way catalytic converter: 1. Its shape resembles two wine bottle bottoms stuck together, with relevant parameters often marked on the surface. 2. It appears bright white with a metallic luster, though prolonged use may cause surface discoloration spots or slight bluish/purple traces. 3. Approximately 20cm in size. It converts HC and CO in exhaust gases into water and CO2 while decomposing NOx into nitrogen and oxygen. The core component consists of a porous ceramic material coated with precious metals like platinum, rhodium, and palladium.
I've been repairing cars for over a decade, and the catalytic converter is always integrated with the exhaust system. Specifically, it's installed between the exhaust manifold and the muffler. This component looks like a metal canister, containing a honeycomb-shaped ceramic substrate coated with precious metal catalysts - platinum, palladium, and rhodium. When engine exhaust gases pass through, these precious metals trigger chemical reactions that convert harmful pollutants like carbon monoxide, hydrocarbons, and nitrogen oxides into water vapor and carbon dioxide. Drivers should always avoid using low-quality gasoline, as iron impurities can clog the converter. When that happens, the engine struggles to breathe, fuel consumption spikes dramatically, and the check engine light comes on.
