Automobile exhaust system includes exhaust manifold, oxygen sensor, three-way catalytic converter, front and rear muffler, etc. The normal operation of the entire system is related to the normal operation of the engine, and the operation of the engine will also affect the normal operation of the engine.
The exhaust system of the car and the normal operation of the car. It will definitely face a cold start at low temperatures. From cold start to when the engine rises to the ideal temperature.