For a three-way catalytic converter to exert its catalytic conversion efficiency, temperature is an important working condition. The temperature at which the three-way catalytic converter begins to function is about 260°C. The catalytic capacity that can be exerted at this temperature is about 50%. The temperature when the conversion efficiency exceeds 50% is usually called the catalytic converter ignition temperature. Most The temperature of the catalytic converter is in the range of 246~301℃. As the temperature rises, the catalytic conversion efficiency increases rapidly. When the temperature is between 480 and 870°C, the three-way catalytic converter will fully function. If the temperature is too high (over 950°C), it will accelerate the aging of the three-way catalytic converter catalyst, weaken the catalytic effect, and shorten the service life.