The Corrosion and Wear Problems Faced by Methanol Fuel Engines and the Solution of Cylinder Bore Plasma Thermal Spraying Technology
At present, the global energy and environment are facing severe challenges. Energy-saving and new energy vehicles have been clearly defined as national development strategies, and the development of methanol vehicles is a feasible path for the diversified development of new energy vehicles. Methanol vehicles have many advantages, such as being more environmentally friendly and clean, with only one-tenth of the carbon emissions of traditional vehicles, and the price of methanol is much cheaper than gasoline. In addition, my country's methanol production has gradually increased in recent years, making it the world's largest Therefore, the calls for the production of methanol vehicles have gradually increased in recent years, and Geely has been at the forefront of the research and development of methanol vehicles in China.
While methanol fuel provides excellent performance for the engine, it also brings many challenges; among them, the corrosion and wear of the internal combustion engine is one of its main technical challenges. During the application of fuel methanol, it will cause great corrosion to the cylinder wall of the engine. The reasons for the corrosion are as follows:
①Methanol itself will undergo free radical reaction, and the oxidation product formic acid will cause corrosion to the cylinder wall of the engine;
②Methanol is highly water-absorbing, and will absorb a small amount of water during storage and transportation, which intensifies its corrosiveness;
③ During the combustion process of fuel methanol, a small amount of organic corrosive substances such as aldehydes and acids will be generated due to incomplete combustion.
Aiming at the corrosion and wear problem of methanol on internal combustion engines, Zhengheng Power has proposed an effective solution; that is, the plasma thermal spraying process for engine cylinder holes. The craftsman uses the atmospheric plasma spraying process to coat the powdered material on the inner surface of the cylinder, and selects different spraying powders to achieve the goals of low friction, low fuel consumption, high wear resistance and high corrosion resistance.
In short, it is an inner hole spraying process. The coating material selected by Zhengheng Power is a metal-ceramic composite material. The advantage of this material is that it can significantly reduce the corrosion and wear of the cylinder bore wall. At the same time, because the coating contains ceramic particles and special elements, it can further improve its corrosion and wear resistance. Its service life will be much higher than traditional engines.
Zhengheng Power, as the first company in China to introduce plasma spraying, has leading plasma spraying technology and equipment, focusing on improving the performance of engine cylinder bores. Provide excellent service to global automobile manufacturers and engine manufacturers.
Post time: Jul-26-2023
