How to solve the problem of only NO exceeding the standard?
1 Answers
If the NO in the exhaust gas exceeds the standard significantly, the first step is to clean the cooling system and the heat dissipation system, and even the lubrication system. Below are the relevant introductions about exhaust gas: 1. Control the flow of cleaning agent: The flow of cleaning agent should be controlled to the point where the engine idles with slight vibration as the best condition. If the engine vibrates severely during the cleaning process, the flow of cleaning agent should be reduced immediately. Some 4S shop technicians rush the process by injecting a large flow of cleaning agent into the engine quickly, which not only damages the engine but also reduces the cleaning effect. 2. Cleaning the three-way catalytic converter: The three-way catalytic converter should be cleaned and maintained every 30,000 kilometers, and those with the conditions can clean it every 10,000 kilometers. Under normal maintenance conditions, the service life of the three-way catalytic converter is between 150,000 kilometers and 200,000 kilometers before replacement is needed.