The SBE engine uses a second-generation control system, which belongs to the traditional hydraulic mechanical control. The implementation of the engine control rules mainly depends on the cam space curve, and the control accuracy is average. Although the SBE's control system is very reliable, it is difficult to manufacture the control cam, and it also occupies limited space of the engine and increases the weight of the engine.

The fully authorized digital electronic control system belongs to the third generation control system, which is light in weight, takes up little space, and has extremely high control accuracy. It has great advantages over hydraulic mechanical control in terms of fuel consumption, reliability, cost, etc.

For example, in hydraulically controlled engines, stalling problems are likely to occur if they are improperly operated. Using digital control systems will be solved well. When the aircraft is just showing signs of stalling, use the ability of the microprocessor to immediately take measures to eliminate stalling. The safety factor of the aircraft is greatly improved.

Li Yuanling naturally knew very well about the advantages of a fully authorized digital electronic control system. Seeing Liang Yuan stumbling and showing off his pitiful engine control system knowledge with himself, she couldn't help laughing. She pulled Liang Yuan over and rubbed Liang Yuan's hair and said with a smile: "Don't embarrass your knowledge. Of course, my mother knows that using a microprocessor as a core digital electronic control system is good, but you are talking about an ordinary chip, with a working temperature of at most about 100 degrees. If you want to use the chip on an aircraft engine, the chip must be able to work stably in a high temperature environment of 300 degrees."

Liang Yuankaba Kaba said with his eyes: "Anyway, my mother doesn't study aircraft engines now. If you make gas turbines for power generation, you can place the digital electronic control system far away from the engine."

Li Yuanling understood Liang Yuan's meaning in a blink of an eye. Mechanical control to digital electronic control cannot be completed overnight. It requires a long-term ground interview. Liang Yuan said that now he wants to lay the foundation in advance and use it directly on the engine when the chip passes the test.

Li Yuanling thought about Liang Yuan's little thoughts and felt that it was particularly interesting. She thought that the layman was an layman after all. Xiaoyuan thought it would be enough to just change the chip. However, every millimeter of space on an aircraft engine needs to be accurately calculated. The change in weight per kilogram involves a lot of calculations. Moreover, the electromagnetic environment on the aircraft is extremely harsh. Even if the digital electronic control system is experimented on the ground, it is very difficult to integrate it into the aircraft. However, Liang Yuan's proposal is still valuable when using ship power or power generation.

Li Yuanling did not disturb Liang Yuan's enthusiasm, but just smiled and said, "Mom is waiting for the electronic engineer you dug up, but I heard that your uncle said that you have been sneaking recently, and today I took the initiative to come to my mother to show her diligence. What are the thoughts about it?"

Liang Yuan just smiled and insisted that he was contributing to the power generation industry, and never admitted that he had any other thoughts.

The two chatted for a while, and Liang Yuan then realized that Li Yuanling had printed the information compiled some time ago and sent it to the entire project team. Li Yuanling proposed to redefine the R&D direction, strictly modify the prototype according to the drawings of SB s_ma1, and prepare to rectify the structure of the project team and implement the chief engineer responsibility system.

This document is equivalent to throwing a huge rock in a calm pond. Except for a very small number of young developers in the entire project team, most of the staff of Factory 423 strongly opposed it. Tao Yonghe, the deputy chief engineer of the project, threw the information compiled by Li Yuanling into the trash can in front of everyone, and criticized it as a nonsense.

Professor Tao Yonghe generously said: "The country has developed from poverty and waste to today. In scientific research, it all depends on scientific and technological workers' efforts to lead the new with the old. In management, this rectification data of Li Yuanling denied the successful experience of scientific research in my country since its founding. It also shrank very academically, overemphasized and exaggerated the technical difficulties abroad, and cracked down on scientific researchers' enthusiasm for innovation, rigid scientific research ideas, and serious dogmatism."

These days, about half of the R&D personnel in the entire project team strictly adhered to neutrality and watched the battle honestly. The remaining half was divided into two camps, and they argued endlessly. The research and development work of gas turbines was completely paralyzed.

Wu Zhonghua had a great headache when facing this situation. Arranging Li Yuanling as the project leader was already the limit of Wu Zhonghua's ability. The current storm has involved the two issues of the most core financial power and R&D ideas of the project team. It is impossible to continue to mix with it.

Faced with the opposition from a large number of project team veterans led by technicians in Factory 423, Wu Zhonghua had to temporarily stop Li Yuanling's work and hurried from Peking to Shengjing to serve as the project chief engineer again.

Since the conflict between Li Yuanling and the 423 factory has been superficial and scientific research has been completely stopped. Wu Zhonghua has been working hard recently, hoping to resume the experiment and research and development of gas turbines first, but unfortunately the effect is not great.

Li Yuanling did not tell Liang Yuan about these bullshit things, but simply said that he would no longer lead the gas turbine project team, and he would have free time to cook dinner for Liang Yuan and the two little girls.

Liang Yuan rolled his eyes and combined with the memories of his previous life to make up for the matter. After thinking about it, I couldn't hide my face and said to himself: Xiaoyuan, give my mother ten million, and she will study the gas wheel. I will take the initiative to dig a hole in this matter.

"Mom, when I was helping Factory 257 design air conditioning fans in the first half of the year, I recognized a new teacher. I worked in the Lanzhou Chemical Factory and the chief engineer of the Lanzhou Chemical Factory." Liang Yuan decided to put the matter on Chu Huifen's head first.

"During this period, the sales of air conditioning fans in 257 Factory increased significantly. It should be no problem to exceed one million units this year. On average, large vertical air conditioning fans and small air conditioning fans need to use ABS plastic at least 4 kilograms. This alone requires 4,000 tons of ABS plastic. The annual output of ABS plastic at Lanzhou Chemical Factory is only 10,000 tons. Some time ago, Teacher Chu called and said that Lanzhou Chemical Factory has begun to prepare for the expansion of ABS production. Otherwise, the Lanzhou Chemical Factory may not be able to supply the ABS consumption of a single air conditioning fan next year."

The raw materials of abs plastic are derived from petroleum. After the oil is separated from ethylene and propylene through a large cracking device, it is then processed through a specific device using blending grafting method to obtain abs raw materials.

Petrochemical enterprises need a large number of heating furnaces during the production process. Usually, the temperature required for heating medium is between 150 and 500 degrees, while the exhaust gas exhaust temperature of the gas turbine is as high as 550 degrees, which is an ideal heat source for various heating furnaces. In addition, the cracking process of petroleum is usually completed under medium and high pressure. Therefore, the core of equipment of various ethylene equipment is the ethylene compressor, and the gas turbine can completely provide power to the drivers of various ethylene and propylene compressors.

Generally speaking, a gas turbine can save petrochemical enterprises at least three to four million yuan in electricity and fuel costs every year.

"Teacher Chu said that Lanzhou Chemical Factory will expand production this time and plans to introduce gas turbines to link electricity and heat to the production line of the device. Unfortunately, the price abroad is too high, and the price of each unit is about 30 million yuan. Lanzhou Chemical Factory can't bear it, and now things are just hanging on."

After hearing Liang Yuan talked so much, Li Yuanling became very interested and straightened her body and asked, "Xiaoyuan, do you have any plans to use domestic equipment?"

"I don't know, I have to know if my mother can produce qualified gas turbines here." Liang Yuan grabbed his hair and said innocently Li Yuanling lowered his head and turned his mind quickly. Although the gas turbine unit of the 909 Institute had many problems, the entire project team did not find anything. The project team has accumulated a large amount of first-hand data in intermittent experiments over the years. Through long-term study and experiments, Li Yuanling is already very familiar with the performance of the entire unit. She already knows the problems and general solutions of the unit.

In Li Yuanling's opinion, it is still easy to modify some improvised data, replace some parts that have not been scientifically verified, and produce according to the original design and production, and reach 90% of the power level of the original gas turbine in a short time. If there is a year of rectification, Li Yuanling is confident that domestic units will reach the original power level, of course, some core components still need to be imported temporarily.

Li Yuanling raised his head and said hurriedly: "Xiaoyuan, ask your teacher Chu the next day, if the domestic gas turbine unit can reduce the cost to about 20 million yuan, can they consider switching to domestic equipment?"

Liang Yuan was a little funny when he heard my mother's pricing. The cost of the 909 gas turbine unit was only around 10 million yuan. My mother set the price around 20 million yuan and obviously didn't want to take advantage of herself. She planned to sell one and make another one, which was just equivalent to borrowing her own money to turn over.

Liang Yuan held back his smile and said, "Teacher Chu will arrive in Benxi on Monday. I will ask her if it is possible to switch to domestic equipment. However, it is still difficult to seamlessly connect the gas turbine unit and the entire production line. At that time, I will send the newly dug up electronic engineers together."

Li Yuanling looked at Liang Yuan thinking about the engine's digital electronic control system and said funny: "Whatever you want, as long as you can take on this project, you can do whatever you want."

Liang Yuan and Li Yuanling, who put aside their worries, started chatting with Li Yuanling. After a while, the two roeli who finished their homework also came to the living room. The two little girls surrounded Li Yuanling and talked about the trivial things that happened these days. Liang Yuan listened in fear, fearing that Ning Wanfei would accidentally leak out the incident of "menopausal syndrome". Ning Wanfei knew Liang Yuan's intentions. She watched Liang Yuan twist and twist on the sofa, shook her pink and white hands proudly, and took advantage of Li Yuanling's inattention to make a "I won't say" lip. Liang Yuan breathed a sigh of relief and quickly presented snacks. Only then did the boiled water lie on the sofa and listen to the three women chatting leisurely.
Chapter completed!