When we mention diesel engines, we think of tractors that emit black smoke. In fact, for a long period of time in the past, our country has been subject to technological blockades with foreign countries. Therefore, in order to get rid of this dilemma, the country is also constantly focusing on the development of core engine components and key technologies. Now we have finally broken the foreign countries for more than 20 years. The world’s top diesel engines developed by China have been rushed for purchase by various countries as soon as they came out. So why is this world's top diesel engine so popular?

On September 16, 2020, Weichai, the leader of my country's industrial equipment manufacturing, held a press conference. At this press conference, Weichai announced its newly developed core product, a commercial diesel engine with a thermal efficiency of over 50%. Once the news was released, many countries in the world were shocked. The development of diesel engines has a great relationship with the improvement of thermal efficiency. The higher the thermal efficiency, the better the power. For a long time, we have been facing the issue of the blockade of foreign technology. Once our country used German technology, but we had to pay a high license fee for each production. What's even worse is that in 2009, in order to restrict our development, Germany unilaterally terminated the use of licenses, and our country was caught in a dilemma for a while. Today, we have developed a commercial diesel engine with a thermal efficiency of up to 50%, which undoubtedly slapped them in the face and proved the true strength of China's manufacturing in the world.

What are the advantages of diesel engines that make us pay so much attention to it? Diesel engines have a long service life. Because of their low speed, the wear of internal parts is less than that of gasoline engines. Therefore, diesel engines are the first choice for many large-scale equipment. Secondly, the safety performance of the diesel engine is also relatively high, the internal fuel is not easy to volatilize, and it will not easily cause an explosion due to some accidents, which is relatively safe and reliable. Third, the diesel engine can obtain higher torque at a small speed. Whether it is on a steep road or the load of the vehicle body, the diesel engine will be better than the gasoline engine, but this will also cause it to run at high speeds at a lower speed. That is why many small family cars nowadays mostly use gasoline. The most important thing is its environmental protection. In fact, many people only see the black smoke from the tractor, but they don't know that it is actually very environmentally friendly. Compared with gasoline engines, the greenhouse effect of diesel engines is about 45% lower than that of gasoline. Generally speaking, the performance of diesel engines is also superior. The advantages of diesel engines are indeed many, but the development of high thermal efficiency diesel engines is indeed a difficult problem.

Science and technology are the primary productive forces. In order to break the technological bottleneck, what has Weichai done over the years? First, the problem of low thermal efficiency was solved. In the past, the thermal efficiency of diesel engines was only 26%. Later, with the development of technology, the thermal efficiency was increased to 46%. How to further improve thermal efficiency is what Weichai has been doing in recent years. my country has increased the thermal efficiency of diesel engines to more than 50%, which will greatly reduce carbon dioxide emissions and effectively solve environmental problems. The achievement of this kind of achievement is inseparable from the research and development of five technologies. Engineers use collaborative combustion technology to greatly improve work efficiency. Coordinated design technology strengthens the overall structure and optimizes the overall quality of the engine. Exhaust energy distribution technology optimizes the design of the exhaust system and improves the efficiency of the turbine, thereby increasing the intake air volume and greatly improving the power of the engine. The partition lubrication technology uses different anti-friction technologies in a targeted manner, which reduces the overall friction by about 20% and greatly improves the efficiency. Intelligent control technology, independent research and development of ECU, creatively developed a series of more precise control predictive models, so that each part of the area control is more effective. Secondly, Weichai has made a large amount of investment regardless of the small amount.

According to statistics, Weichai invested nearly 30 billion yuan during the research and development period, and also attracted a large number of talents for scientific and technological research. This technology is really hard-won. So since this technology is costly and difficult to overcome, why does our country have to overcome this difficulty? The most important thing is that diesel engines have a wide range of uses. When there is no electricity and power is needed, diesel engines must be the best choice. Many large tools will give priority to diesel engines. For example, our aircraft carriers and tanks are equipped with diesel engines. Secondly, our impression of diesel engines is that diesel engines are very easy to pollute the environment. The agricultural tractors used in the early days are the best example. Every time we see black smoke Tractors will think of its pollution to the environment, and because of its too harsh noise, it will make people want to stay away. In fact, this is all because the performance indicators of the early diesel engines in our country did not meet the quality standards, the air intake was blocked and the compression force was insufficient. Therefore, it is imperative to improve the performance of the diesel engine. Third, in order to break the foreign blockade against us, only by mastering the technique in our own hands can we not be bullied by other countries.

Today, the diesel engine developed by China has truly solved the problem of being blocked by foreign technology. Even because of this major breakthrough, many countries have truly realized China's strength. There is no obstacle in China that cannot be overcome!Editor/Baohongying