Cleaning and replacement of urea pump cleaning machine:

It is a common problem for the urea pump cleaning machine to malfunction due to blockage, causing abnormal engine operation. When the three-way catalyst is blocked, the exhaust is not smooth, the back pressure increases, the vehicle consumes fuel, and the power decreases.

Depending on the specific situation, it is possible to use non disassembly cleaning or disassembly cleaning methods to restore the operational efficiency of the three-way catalyst.

Method 1: Hanging bottle cleaning:

The advantage of this method is that it does not require disassembly of the ternary catalytic device, but the disadvantage is that the cleaning effect is not optimal, and the purchase of cleaning devices and cleaning agents is relatively expensive

After the ternary cleaning agent enters the combustion chamber through a vacuum tube and burns, a high-temperature oxidation environment is established around the ternary purifier. Through oxidation and recovery reactions, the sulfur and phosphorus chemical complexes attached to the surface of the ternary catalyst and incomplete gasoline combustion products are converted into sulfur dioxide and carbon dioxide gases, which are discharged to clean the ternary and restore the activity of the ternary catalyst.

02 Disassembly and cleaning:

This method is suitable for situations with severe blockage. At this moment, the three-way catalyst must be removed and cleaned. Generally, it can be soaked in oxalic acid for a period of time and then rinsed with water.

If the three-way catalyst is confirmed to be damaged, it can only be replaced, which is also a significant expense. When replacing it, it must be matched with the engine.

1. Do not use leaded gasoline.

2. Do not work rapidly for long periods of time (open-loop control state).

3. Do not let the engine speed fluctuate rapidly.

4. Do not ignite too late.

5. Unable to start for a long time.

6. Do not use unqualified fuel additives

When measuring cylinder pressure, it is necessary to unplug the central control connector of the fuel pump in order to stop the injector from injecting fuel into the cylinder.

When a cylinder is found to be malfunctioning, it should be stopped in a timely manner for inspection and troubleshooting.

9. Avoid many factors that can cause the mixture to be too rich, such as poor fuel injector closure, failure of fuel pressure regulator (high oil pressure), failure of oxygen sensor, failure of air flow sensor, etc.

10. As long as the catalytic converter is used correctly, it generally does not require protection, so it should not be disassembled casually. If replacement is needed, it must be matched with the engine.

Article source: Kaiping ultrasonic cleaning machine http://www.kpzfcsb.com/