Cars equipped with a three-way catalytic converter cannot use leaded gasoline, because after the lead-containing oil is burned, the lead particles will cover the surface of the catalyst when it passes through the three-way catalytic converter with the exhaust gas. Conversion efficiency, leading to lead poisoning of the three-way catalyst.
The unburned mixture should be prevented from entering the catalyst. The temperature at which the three-way catalytic converter starts to work is about 200 degrees Celsius, and the optimal working temperature is between 400 degrees Celsius and 800 degrees Celsius. After more than 1000 degrees Celsius, the precious metal components as catalysts will also undergo chemical changes themselves, so that the effective The catalyst composition is reduced, and the catalytic effect is weakened. Therefore, in the process of using the vehicle, we should pay attention to exclude the following situations:
One is idling for too long; the second is the ignition time is too late; the third is that individual cylinders do not work due to misfire; the fourth is difficult to start; the fifth is the mixture is too rich; The water temperature is too high caused by the bad.