Chapter 23: The Disciple of the Closed Door (Seeking Collection and Recommendation!)

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  "Do you want to study two majors at the same time?" Mr. Gong looked at Yang Jie and asked in a low voice, without making any comment.

  "Not bad!" Yang Jie nodded seriously, learning these two majors was something he had discussed with Xiao Wu. With Xiao Wu by his side, Yang Jie wouldn't feel any pressure even if he were to study dozens of majors.

  However, domestically it is currently not allowed to study two majors at the same time. One must first obtain a master's degree in one major before being able to pursue another major. Some developed countries' universities do not have this restriction.

  Your undergraduate major is completely different from the two majors you want to take for your master's degree! It can be said that there is a distinction between liberal arts and science, are you sure you're not mistaken?" Mr. Gong looked at Yang Jie in front of him, seeing that he was calm and composed, seemingly without any pressure from studying two majors.

  "Mr. Gong, although I majored in economics and management, I was very interested in computer technology and mechanical engineering during my university days. I read a lot of books on these two subjects. Now that I'm taking the postgraduate exam, I have this confidence." Yang Jie's self-confidence as he spoke infected Mr. Gong who sat opposite him.

  Yang Jie said that he learned the knowledge of these two majors through books during his university days. Old Gong nodded and asked, "Since you are so confident, I'll ask you, do you know about carburetors used on motorcycles?"

  "The carburetor is a mechanical device that mixes a certain proportion of gasoline with air under the vacuum action generated by the engine. Currently, domestic motorcycles all use carburetors to supply mixed gas to the engine, but with the development of electronic fuel injection technology, future new-type EFI motorcycles will gradually replace traditional carburetor motorcycles." Yang Jie answered Gong Lao's question based on the introduction to carburetors in his textbook, and also looked far ahead and put forward his views on the future technical development direction of motorcycles.

  Xue Yun and Gong Lao, Quan Tingming were stunned by the words. Electric turbo motorcycles are still a novelty for outsiders, and so far, there have been no electric turbo motorcycles in the country. Those with turbo technology are mostly some imported high-end cars.

  Of course, Xue Yun and others are well-informed people who know that a motorcycle company is currently negotiating with foreign companies to introduce the electronic fuel injection technology and apply it to motorcycles to produce EFI motorcycles, replacing traditional carburetor motorcycles.

  Mr. Gong didn't expect Yang Jie to actually understand carburetors, and laughed as he asked: "Since you know about carburetors, have you seen the drawings of a carburetor? Can you draw out the mechanical drawing of a carburetor?"

  Pang Zheng heard that Gong Lao asked this way, knowing that Gong Lao was testing Yang Jie. It seems that Yang Jie's performance is extremely outstanding, otherwise he wouldn't let Gong Lao ask questions repeatedly to test Yang Jie.

  Yang Jie saw that Old Gong was no longer asking about theoretical knowledge, but had begun to test his most basic hands-on skills. He smiled slightly in his heart and nodded in response to Xiao Wu's hint: "Old Gong, I not only know how to draw the blueprint of the oil pump, but also based on my own research and refinement, I have made some improvements to the current oil pump design."

  "Director Xue, do you have drafting tools here? I can draw out the design plans for my own spray nozzle and plunger type fuel injector."

  Xue Yun did not expect Yang Jie not only moved machinery but also could do research and development design by himself, and was greatly surprised in his heart.

  Gong obviously didn't expect this, looking at the confident Yang Jie, his expression was calm and composed, not like he was telling a lie. Moreover, Yang Jie wanted to draw out the blueprint on the spot right now, whether Yang Jie had real skills or not, naturally couldn't be hidden from this authority expert in mechanical engineering.

  "Xiao Quan, have someone send over a set of drawing tools, I'm eager to see the fuel injector designed by Xiao Yang himself." Xue Yun smiled and nodded, instructing Quan Tingming with one sentence. Quan Tingming got up after hearing the words, walked to the office desk, made a phone call, and instructed them to send over the drawing tools as soon as possible.

  "Mr. Gong, you are an authority in mechanical engineering, with your supervision, it's natural to determine whether Xiao Yang's design is effective or not. Later, I'll trouble you to appraise Xiao Yang's design, if it's effective, I'd like to represent Jiangnan Motorcycle to buy out his design." Among the people present, only Mr. Gong was an expert in this field, so whether Yang Jie's design was effective or not naturally had to be judged by Mr. Gong.

  Gong Lao smiled and nodded, then handed over the drawing tools to several designers from the 3113 factory design department one by one. After all the drawing tools, including the large drawing board, triangle ruler, T-square, protractor, compass, paper, pencils, etc., were placed in the office, Yang Jie finally stood up and walked to the front of the drawing board.

  "Mr. Gong, we'll leave it to you here. We'll go with Little Pang to the conference room next door to discuss something and won't disturb Little Yang's drawing. After Little Yang finishes drawing, we'll come back." Xue Yun smiled and stood up after seeing Yang Jie start working, said a word to Mr. Gong, then left the office with Pang Zheng and Quan Tingming.

  In high school, Yang Jie had learned drafting, and now he also has Xiao Wu's on-site guidance, so he is naturally not worried.

  Following the standard drawing steps, first draw the frame with thick solid lines, then fill in the title bar and scale proficiently, the action is smooth and fluent, very skilled, with a strong foundation.

  Gong Lao is an authority in mechanical engineering, so his vision is naturally not bad. He doesn't like people who only talk but don't do anything. Looking at Yang Jie's drawing process, it's very correct, and the font, line drawing, dimension annotation, etc. are all done perfectly, and the drawing skills are no worse than those of a mechanical engineering graduate.

  As Yang Jie's movements quickened, a main view, front view, left view and section view of the carburetor were drawn out.

  The carburetor is not a single component, Yang Jie drew the overall diagram and then started to draw some important parts inside, and began to explain his design to Master Gong.

  "Traditional carburetors, using variable venturi and air bleed to regulate fuel flow, basically meet the requirements of gasoline engine variable operating conditions, with simple structure and low cost advantages, are widely used in motorcycles and mini cars."

  But the conical oil needle type main fuel supply system it adopts has poor fuel atomization quality, rough air-fuel ratio accuracy, especially when working at low speed and heavy load. The conical oil needle rises with the piston, increasing the gap between the oil needle and the inner hole of the nozzle, resulting in more fuel being sprayed out. At this time, the intake airflow speed is lower, the fuel atomization is even worse, and more oil falls on the pipe wall to form an oil film.

  Mr. Gong nodded slowly after hearing the words, and had to say that Yang Jie had indeed put in a lot of hard work on the fuel injector. As an economics student, he was able to achieve this level, which greatly exceeded Mr. Gong's expectations. Yang Jie's performance was even better than some mechanical engineering graduates.

  It's not difficult for students studying mechanical engineering to understand and master a mechanical device, and in some theoretical aspects, they are even stronger than Yang Jie. What makes Yang Jie strong is that he dares to try and has the rare ability to innovate, and can independently improve the design of the carburetor based on its shortcomings.

  "The fuel injector I designed is based on the traditional plunger-type fuel injector, using a spray nozzle that can change the oil injection parameters to replace the original conical oil needle, and adding a deceleration auxiliary intake valve and an idling fuel injector."

  "The newly designed spray nozzle type of fuel injector makes the fuel supply more accurate, allowing the gasoline engine to run smoothly in any situation with a uniform mixture and suitable air-fuel ratio, resulting in more complete combustion and achieving the effects of saving fuel and reducing emissions..." Yang Jie introduced his design, his hands moving quickly as he completed sheet after sheet of drawings.

  Gong Lao listened to Yang Jie's introduction and looked at the various drawings made by Yang Jie, his appreciation for Yang Jie grew more and more.

  Yang Jie drew out all the design drawings of the carburetor he designed without stopping, and explained his design concept, structure and working process of this new type of carburetor to Old Gong one by one.

  He held in his hand the drawings of Yang Jie's variable oil spray parameter gasoline engine spray nozzle plunger type carburetor, as well as the deceleration additional intake valve drawing, and the carburetor section view. There were also drawings of some key components. Mr. Gong carefully examined them, constantly thinking about the working principle of the carburetor on the drawings, and quickly came to a conclusion in his mind.

  Yang Jie's design is not only feasible, but also very practical, it can be directly converted into products and generate economic benefits, unlike some designs that are good-looking but useless, with a glittering exterior but a shoddy interior.

  "Great! Great! I really didn't expect that, as an economics and management student, you are even more excellent than many mechanical engineering students." Gong Lao put down the drawings in his hand with great satisfaction, praised Yang Jie for a moment, and then asked him a series of questions about mechanical engineering and automation.

  As the questions became increasingly profound, Yang Jie's response time to Gong Lao also increased. When Yang Jie had some ideas and thoughts that even moved Gong Lao, he hastily hid his light under a bushel and no longer showed off his abilities that made Gong Lao suspicious.

  "Yang Jie, are you interested in becoming my Ph.D. student? With your current abilities, it's not difficult to get a master's degree. I have high hopes for you and want to take you on as my last disciple!" Gong Lao's eyes shone brightly, and Yang Jie seemed like an unpolished jade stone in his eyes, which would surely become a precious treasure with careful polishing.

  "Being able to be a student of Professor Gong, Yang Jie naturally sought after it, but I haven't even received my master's degree, how can I become your Ph.D. student?" Yang Jie was overjoyed when he heard this, as Professor Gong was an academician of the Academy of Sciences and also an authority in the field of mechanical engineering, being able to study under him made him extremely happy.

  Mr. Gong thought it was no big deal and smiled, saying: "I'll help you with the admission procedures, as long as you complete the corresponding exams within a year and give me a satisfactory master's thesis, I'll take care of everything else."

  Gong Shanxing is the dean of the School of Mechanical Engineering at Jiangnan University of Aeronautics and Astronautics, and an academician of Huaxia Academy of Sciences. He has his own way to help Yang Jie with enrollment, exams and other issues. As long as Yang Jie's exams are fine and the papers he submits can satisfy Dean Gong, Dean Gong will use special channels to approve Yang Jie's early graduation from master's program, and no one can find fault with Yang Jie or Dean Gong.

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