What are the reasons for excessive exhaust emissions in new cars?
1 Answers
Excessive exhaust emissions in new cars mainly involve three indicators: CO, CH+NOX. Below are the detailed explanations for each: CO exceeding the standard: This is caused by excessive carbon deposits inside the engine. In such cases, it is necessary to clean the engine and fuel injectors. CH+NOX exceeding the standard: This is due to the failure of the catalytic converter. In such cases, the catalytic converter should be cleaned. The catalytic converter is a significant factor affecting excessive car exhaust emissions. In many cases, excessive exhaust emissions are caused by issues with the catalytic converter. The function of the car's catalytic converter is to oxidize CH and CO into carbon dioxide and H2O. If the catalytic converter malfunctions, it is difficult to pass the exhaust emission test. During use, the catalytic converter is prone to carbon deposit blockages, poisoning, or failure, which can be resolved by cleaning the catalytic converter. If the catalytic converter is poisoned or damaged, it needs to be replaced promptly. Unqualified fuel: Another possible reason is the use of unqualified fuel, which can also lead to excessive exhaust emissions. Solutions include changing the fuel, cleaning the fuel tank, or adding fuel additives to improve the quality of the fuel.
