Speaking of which, the rotary engine is not an invention of Mazda, but was invented and patented by a German engineer, Mazda just spent a huge amount of money to buy the right to use this patent, and is also the only car manufacturer to achieve mass production of the rotary engine and successfully installed it, for which Mazda can be said to have paid a huge price.

In addition to the rotary engine, the automobile engine used at this stage basically belongs to the four-stroke reciprocating motion engine, when the engine is working, the piston does reciprocating linear motion in the cylinder, in order to convert the reciprocating linear motion of the piston into rotary motion, it is necessary to use the crank slider mechanism.

Linear motion is converted into rotary motion, in which it is inevitable that there will be energy loss, and the output torque of the engine is greatly limited, and the rotary engine, to a large extent, changes this defect of the reciprocating motion engine.

Compared with the reciprocating engine, the rotary engine cancels the unnecessary linear motion, and the expansion force generated by combustion acts on the side of the rotor, thereby pushing one of the three faces of the triangular rotor to the center of the eccentric shaft, resulting in a rotational motion that turns the energy generated by combustion into output torque and transmits it to the powertrain of the car.

Because of this sporty characteristic, the rotary engine has a smaller size and lighter weight, because the vibration and noise during operation are also very small, and it has irreplaceable advantages4.

Mazda's classic RX7 series sports cars are equipped with their own optimized rotary engines.

In front of the conference room, an engineer named Ichiro Koizumi is talking about the improvements made by Mazda to the rotary engine, and his words are also full of pride, after all, Mazda is currently the only company in the world that is still insisting on developing rotary engines and going to breakthrough progress, compared with the relevant technologies shown by European and American experts yesterday, the rotary engine can be said to be no inferior!

"Although I don't like the Japanese nation very much, but I also have to admit that compared to us, they have more craftsman spirit, not to mention anything else, just take the rotary engine as an example, can do more than ten years as a day, regardless of the return of the research and development of this engine, is not what we can do, in comparison, our country for the automobile industry, or a little eager for quick success, just can not do precipitation, serious research and development. Luo Yuzhong, who was sitting next to Zhou Jingming, couldn't help but say.

"Shiyi long skills to control the country, our country has its own national conditions, now the whole industry, are to Europe and the United States automobile power as a model of learning, in fact, I think it is not appropriate, the European and American countries of the automobile industry has gone through more than 100 years, we are now to learn their industrial model, there is a sense of skipping. In fact, what we should learn the most is our two neighbors, South Korea and Japan, which are the two countries that we should imitate. ”

Zhou Jingming looked ahead with his eyes and said thoughtfully.

"Xiao Zhou, do you think the rotary engine they have been insisting on is really commercially valuable?" Luo Yuzhong continued to ask.

Zhou Jingming smiled, "Although the rotary engine has many advantages, the disadvantages are also obvious, high fuel consumption, heavy pollution, short life, these are all things that need to be overcome, but as an engine, aside from the commercial value, the rotary engine is definitely a dazzling pearl in the history of engine development, in other words, the commercial value is no longer enough to measure the historical significance of this engine." ”

Rotary engines were initially in the spotlight for winning the 24 Hours of Le Mans, but the turning point came in 1992, when the FIA banned cars with rotary engines from competing in any international motor racing events, and with increasingly stringent environmental regulations, rotary engines were not actually used much.

After the exchange meeting in the morning, it was time for lunch, which took the form of a buffet, both Chinese and Western food, and the participants could decide what they ate according to their preferences.

"Lao Luo, you eat here first, I'll go over there and take a look. After taking lunch, Zhou Jingming pointed in the direction of Koizumi Ichiro and said.

No matter what other people think of rotary engines, Zhou Jingming is very interested in this technology anyway.

Obviously, Zhou Jingming is not the only one who is interested in this technology, but also representatives of the United States and Germany are also gathered around Koizumi Ichiro at this time, and several people don't know what they are talking about.

It wasn't until a few other people left that Zhou Jingming slowly sat down opposite Ichiro Koizumi, who was in the honeymoon period between China and Japan in the 80s, which is why there were Japanese representatives attending this exchange meeting.

After identifying himself, Zhou Jingming went straight to the point, "I'm very interested in the rotary engine technology you proposed in the morning, I wonder if there will be any opportunities for cooperation in the future?"

When Zhou Jingming said these words, he was completely in Japanese, and there was no translator present, a trace of surprise flashed in Koizumi Ichiro's eyes, but then he replied with a smile, "It depends on what kind of conditions you can give us." ”

"Perhaps you will be very interested in the topic that I will report in the afternoon, and I think we can talk about it later. Zhou Jingming did not rush to show his bargaining chips, but left room for this negotiation.

"Okay, if it's really like what you said, Mr. Zhou, maybe we can really reach a cooperation agreement on rotary engines!" Koizumi Ichiro couldn't help but glance at Zhou Jingming more, he didn't know Zhou Jingming's identity, but he was able to make a report on behalf of China at such an important exchange meeting at a young age, and he thought he had real skills.

Lunch time ended quickly, after a short break, the afternoon exchange meeting officially began, which is also the last formal half-day of this technical exchange meeting, tomorrow is mainly some visits, and will not involve technical discussions.

The first to report, is Luo Yuzhong, for the multi-point EFI technology he wants to report this time, Germany and the United States have actually heard about it for a long time, because Volkswagen has already released the news, but in terms of technical principle, it has been in a state of blockade, this time to be able to hear the research status of multi-point EFI on the spot, for these people, it is also a rare opportunity, so everyone, have pricked up their ears, listen carefully.

Multi-point EFI is developed on the basis of single-point EFI, and the technical principle of single-point EFI is no secret in Europe and the United States, many people are pinning their hopes on this time, to break through the technical blockade of VR6 engine project team, research and development of their own multi-point EFI technology.

Luo Yuzhong's report lasted for more than an hour before it ended, and just when many people thought that this exchange meeting was over and were about to communicate with Luo Yuzhong, Ren Changjiang came to the front again.

After listening to the report of multi-point EFI, I believe that everyone must have a new understanding of engine injection technology, but the topics to be reported below may completely subvert everyone's understanding of engine injection methods, and Mr. Zhou Jingming is invited to report the last topic of this exchange meeting. ”

When Ren Changjiang said these words, Zhou Jingming had already stood up from the crowd with the materials he had prepared.

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