6. Challenges faced by three-way catalytic converters

The three-way catalyst plays a crucial role in the purification process of automobile exhaust. However, due to various factors such as the manganese chemical composition in the anti knock agent MMT, poor driving habits of drivers, long-term congested road driving, and the cleaning effect of ethanol gasoline, carbon deposits or chemical complexes may form inside the oxygen sensor and three-way catalyst. These sediments not only reduce the purification efficiency of the three-way catalyst, but may also cause malfunctions such as oxygen sensor and three-way catalyst poisoning failure, three-way catalyst blockage, and EGR valve blockage caused by sediments. These issues not only affect the normal operation of the engine, but also lead to serious consequences such as increased fuel consumption, decreased power, and excessive exhaust emissions.

The traditional engine maintenance methods can no longer meet the comprehensive maintenance needs of modern cars, especially for the maintenance of emission control systems. Therefore, even though the vehicle has undergone long-term normal maintenance, it is still difficult to avoid the occurrence of the above-mentioned problems.

In order to solve this problem, research institutions have developed a new set of engine routine maintenance technology - the new technology of comprehensive routine maintenance of engines, which addresses the shortcomings of traditional maintenance methods. The introduction of this technology provides an effective solution for automobile manufacturers, maintenance companies, maintenance management departments, and environmental protection departments, aiming to ensure that the engine is always in the best working condition, thereby achieving efficient and stable exhaust purification effects.

The core of this new technology for comprehensive routine maintenance of the engine lies in not only changing the oil and three filters during regular maintenance, but also specially adding a cleaning and maintenance process for the three-way catalyst. Its technical feature lies in the integration of the "Automobile Exhaust Gas Control System Inspection and Maintenance Project" with traditional engine regular maintenance methods, thus overcoming the shortcomings of traditional maintenance methods that cannot meet the comprehensive maintenance needs of modern engines. Through this innovation, we can more actively prevent abnormal operation of the emission control system for environmentally friendly engines, rather than just passively addressing the problem. In addition, the National Car Quality Inspection Center conducted detailed tests on the power and economy before and after cleaning, and the results showed a significant improvement in performance after cleaning.

7. Power performance - maximum speed (km/h)

Before cleaning: 177.0, after cleaning: 179.3

By comparing the data before and after cleaning, we can clearly see that after being treated with the new technology of comprehensive conventional maintenance of the engine, the maximum speed of the vehicle has significantly increased by 1.30%

4th gear acceleration performance improvement

Before cleaning, the vehicle takes 1.5 seconds to accelerate from 30 km/h to 100 km/h in fourth gear. After comprehensive routine maintenance, this time was shortened to 1.3 seconds, improving acceleration performance by 30%.

The time required for starting, shifting, and accelerating to 100 km/h has been reduced by 4.23%