There was a commotion in the conference room, and what Ren Changjiang said made many people put a big question mark in their hearts, what kind of technology would the so-called completely subvert the perception of engine injection methods?

Isn't multi-point EFI the most advanced engine injection technology in the world?

If Ren Changjiang's words make everyone confused, then seeing Zhou Jingming who has come to power, then many people are even more puzzled, the people who participated in this exchange meeting are all over thirty-five years old, but looking at Zhou Jingming's appearance, it seems that he is in his early twenties, when did China produce such a young talent?

Koizumi Ichiro, who was sitting below, couldn't help but look at Zhou Jingming a few more times, but he didn't expect Zhou Jingming to really have an issue to report, Koizumi Ichiro thought that Zhou Jingming was joking in the morning!

Compared with other people's surprises, Bosch and Volkswagen's representatives are more calm, they are no strangers to Zhou Jingming, and the technology of multi-point EFI is actually the technical principle provided by Zhou Jingming, so they are more curious about the topic that Zhou Jingming is about to report this time.

In the face of the crowd below, Zhou Jingming did not have any timidity, but silently walked to the front of the display board, and pasted the technical drawings in his hands on the board in order.

"Aren't these drawings just ordinary assembly drawings and parts drawings, what is his purpose in displaying these drawings?"

"yes, I don't see anything that would change my perception anyway. ”

…………

As soon as Zhou Jingming's drawings were displayed, many people began to whisper about them.

"No, if you look at the position of the injectors in that general assembly drawing, is it different from the ordinary one?"

"It seems like that's really the case, why is the injector in the cylinder! Shouldn't it be in the intake manifold?"

"Not only that, but if you look at the structure of the intake pipe, it's not the same as what we usually see. ”

"There also seems to be an extra part similar to a pump on the side of the air intake cam in the assembly drawing, what is this for?"

…………

Among the participants, there are many engine experts from various countries, who have long been aware of the structure of traditional engines.

Ren Changjiang and Zhang Xingchen, who were sitting below, also saw the technical drawings about direct injection in the cylinder for the first time, so many people were discussing, and the two of them couldn't help but stare at these technical drawings and study them carefully.

After Zhou Jingming did all this, he returned to the front of the microphone, and Zhou Jingming saw the reactions of everyone below, but he didn't say anything, with a confident smile on his face as always, and after coughing lightly, he began to say, "The engine injection technology I am going to show you next, I call it in-cylinder direct injection." ”

With Zhou Jingming's speech, the conference room became quiet again, and many people became interested in the words "direct injection in the cylinder", because as Ren Changjiang said at the beginning, such injection technology really subverted their perception of the traditional engine injection method!

The change from injecting gasoline in the intake manifold to directly in the cylinder may seem small, but it is significant for the development of engine injection technology.

However, Zhou Jingming was just about to continue, but an engineer from Germany stood up, "I'm sorry to interrupt, I don't mean to offend, but the technology you said about in-cylinder direct injection, China's Borgward, as early as 30 years ago, seems to have been launched, I don't know what is the essential difference between your so-called in-cylinder direct injection and Borgward's in-cylinder direct injection at that time?"

As soon as the German engineer asked, the eyes of the audience were all focused on Zhou Jingming's body, if it was really as the engineer said, Zhou Jingming's proposal for direct injection in the cylinder was nothing more than picking up people's teeth, a cliché?

In the face of such doubts, Zhou Jingming was still not surprised, "Borgward has indeed launched a car equipped with in-cylinder direct injection, and the in-cylinder direct injection I will introduce now is essentially no different from the one launched by Borgward back then, which is to transfer the position of fuel injection from the intake manifold to the cylinder." ”

"So you mean, direct injection isn't your first idea?" the engineer continued.

"The idea of direct injection in the cylinder is naturally not my first creation. Zhou Jingming generously admitted, "But I also want to ask, the in-cylinder direct injection pushed out by Borgward Automobile back then has not achieved mass production, right?"

"It didn't make a splash in the industry, did it?"

"Then do you know why Borgward's technology has not been mass-produced?"

"Is it because the technology isn't advanced enough?"

"Is it because direct injection in the cylinder really can't compare to electronic injection, or even carburetor injection?"

…………

Zhou Jingming asked the German engineer directly in a series of questions, in fact, he didn't know much about in-cylinder direct injection, but he had seen in the literature that Borgward had launched a car equipped with an in-cylinder direct injection engine.

After successfully transferring the pressure, Zhou Jingming paused and continued, "The question I just asked, the answer is NO!" Borgward's in-cylinder direct injection engine was not mass-produced, not because the technology of in-cylinder direct injection is not good, but because its technical principle itself is unreasonable, he did not solve the defects caused by in-cylinder direct injection, and the advantages of power and fuel economy were not reflected, in other words, Borgward only put forward the concept of in-cylinder direct injection, but did not figure out how to achieve the technical route of in-cylinder direct injection. ”

"Today, I want to borrow the concept proposed by Borgward back then, and redefine the technology of in-cylinder direct injection from the aspects of technical principles, component structure design and electronic control, which truly reflects the technical advantages of in-cylinder direct injection!"

For some people may make a fuss about Borgward's in-cylinder direct injection engine, Zhou Jingming has long been prepared, firstly, Borgward did not apply for a patent for this technology that year, and secondly, Zhou Jingming's current design of in-cylinder direct injection has actually completely exceeded Borgward's definition of this technology back then, and the technology is more mature.

The audience was solemn, for most people, direct injection in the cylinder is a completely new concept, since Zhou Jingming is so confident in what he is about to show, then of course they are willing to listen carefully.

Next, Zhou Jingming made a detailed introduction to the drawings from the overall technical principle of direct injection in the cylinder to the design of the core components.

With the in-depth explanation of Zhou Jingming, those people sitting in the audience are more and more interested in direct injection in the cylinder, Zhou Jingming for the design of core components such as fuel injectors, they are even more shocked, theoretically speaking, the technical advantages of direct injection in the cylinder are obviously better than other injection technologies!

"To sum up, in-cylinder direct injection can well solve the problem of uneven mixing of oil and gas in traditional engines, and maximize the power of the engine, which is completely feasible in terms of technology, thank you. ”

After more than two hours of reporting, there was no pause in the middle, and when Zhou Jingming finished the last sentence, the audience applauded.

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