ps: Brothers, I'm sorry, don't look at it now, please wait for an hour and a half before refreshing. Pen? Interesting? Pavilion wWw. ｂiquge。 infoIn addition, today is 2 chapters in a row, with a total of 6000 words.

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With the rapid development of electronic technology and the wide application in automobiles, the degree of electronicization of automobiles is getting higher and higher, which also brings an inevitable problem: with the application of a large number of electronic equipment, the wiring of the body is not only huge, but also complex, because most of the traditional automotive electronic systems use a single point-to-point communication mode, and the subsystems are rarely connected with each other, or there is no connection at all.

Today's high-end cars, such as Mercedes-Benz S-Class car, with a large number of electronic equipment and automotive active safety system applications, the application of wire length has reached as much as 1500 meters, more than 1000 electrical nodes, according to the calculation of the chief designer of Mercedes, with the further application of electronic technology, if not in the automotive electronic system to make a revolutionary update, the next generation of S-Class class car wire length is likely to exceed 2000 meters, There will be more than 1,500 electrical nodes! And in this number will double every 10 years!

However, there is only so much space in the car, and if the degree of electronization becomes higher and higher, it will inevitably lead to a contradiction between the thick wiring harness and the limited available space on the car.

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"Yes, Chen Dong, variable valve timing technology has high requirements for the accuracy, stability and tools of processing equipment, and our current technology cannot be achieved at all."

"The machining part of variable valve timing is actually okay, didn't we get a batch of high-precision second-hand machine tools from Germany, these machine tools are used to process camshafts, but the solenoid valve can only be purchased ......"

"Although the torque of variable valve timing technology is good at low speed, the torque performance at medium speed is a little worse, and it is best to use it with variable valve lift technology, so that the four-valve technology, variable valve timing technology and variable valve lift technology are not a little ......bit more difficult."

"And that's not all. There are also special circuits and programs to control the opening and opening time of the solenoid valve and the variable camshaft phase regulator, which we have not done before, and there are no departments and research institutes in China that have carried out relevant technical research, if it is to be realized, the difficulty is not the general ......"

…………

Everyone is talking about the difficulty of using variable valve timing technology, in short, it is very difficult to achieve low-speed and high-torque output on the Jinfeng 680Q.

There is no doubt that the use of variable valve timing technology with variable valve lift technology can indeed greatly improve the overall performance of the Jinfeng 680Q engine, but in terms of the current technical level and ability of Runhua Industry, the mechanical hardware part is not too big a problem, but in terms of electronic technology such as control logic and system calibration, it is completely black-eyed, and if you want to make it, this time is impossible to predict, and some people even think that since the technical difficulty is so great, then we will only do the four-valve technology per cylinder, the four-valve technology is also good, it's great to adjust the compression ratio again, isn't that okay?

"No way!"

In the face of this argument of "as long as the technology is better than the previous one", Chen Geng clearly objected: "Everyone should be clear, our competitor of Runhua Industry is SAIC Volkswagen, and in the near future, we will add a FAW Audi, as a world-class car manufacturer, they not only have much stronger technical strength than us, but also have a gold signboard of 'foreign famous car brand', if we can't make breakthroughs and innovations in technology, why compete with them?" ”

As soon as Chen Geng's words came out, everyone was silent: yes, as the people have more and more knowledge, a view that "foreign things are better than China" has become a social consensus, and the people have some looks down on their own brands.

Thinking of this, everyone is a little ashamed.

"But you don't have to worry too much," Chen Geng's tone changed, and he gave a typical slap to a sweet date: "Although the variable valve timing technology and variable valve lift technology are difficult, they are not as difficult as everyone thinks, and I have done some research in this area before this." ”

"Really?" Hearing Chen Geng say this, Liu Mingming's eyes suddenly lit up, and he hurriedly asked, "Chen Dong, have you really done research on variable valve technology?" ”

Not only Liu Mingming's eyes lit up, but other people's eyes also lit up: Chen Dong's talent in design is known to everyone, it is not an exaggeration to say that Chen Dong is definitely one of the best engine designers in China, if he has started the research on variable valve timing and variable valve lift technology in advance, it must have achieved considerable results.

This technique, which they thought was very difficult just now, suddenly seems to be less difficult.

"Of course, I can't joke with everyone about this kind of thing, can I?" Chen Geng smiled, thought about it, and said: "In this way, it is better to do this, in addition to variable valve timing and variable valve lift, we will make a little technical upgrade for the 680Q: first, re-optimize the balance between the crankshaft and the engine; Second, find a way to reduce the friction coefficient between the engine parts, variable valve timing technology, variable valve lift technology and four-valve technology, the three difficulties are led by me, and the rest will be regrouped, what do you think? ”

What do you think? Of course it's good, everyone nodded hurriedly.

Just looking at the R&D roadmap given by Chen Geng, asking to make the first prototype in three months, everyone is a little scratching their heads: is it really possible to make an engine with variable valve timing technology, variable valve lift technology, four-valve technology, long-stroke piston technology, and double balancer shaft technology in 3 months? Even if it is re-developed on the basis of the Jinfeng 680Q, the difficulty is not much different from re-developing a completely new engine, right?

"I know that everyone has doubts in their hearts," in the face of everyone's questions, Chen Geng's face was extremely determined: "I said that if I can do it in three months, I will definitely be able to do it, as long as everyone can complete their own R&D tasks according to the R&D schedule I gave, then there will be no problem." ”

It's true?

Hearing Chen Geng's words, everyone couldn't help but look down at their task schedule again, roughly calculated it in their hearts, and then was surprised to find that it seemed to be really like this, the only problem was that they were under a lot of pressure, but it was definitely not impossible to do it...... Well, if that's the case, then it's really not much of a problem.

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Runhua Industry is jubilant here, and Shinichiro Tanaka is really anxious, and the whole person is going crazy.

After inadvertently learning that Runhua Industry had opened up a new market for bus modification air conditioning systems, Shinichiro Tanaka couldn't wait to slap himself in the mouth: Denso buses have special air conditioning compressors, almost all buses and buses in Japan have popularized air conditioning systems, why didn't I think that I could help those buses without air conditioning to install air conditioning? There's no technical difficulty at all.

Shinichiro Tanaka's first reaction was to find a way to find out the price of Runhua Industrial's air-conditioning compressor -- he firmly believed that Runhua Industrial, which produced small batches, could not be compared with Denso in terms of cost, but after trying to get a way to get the contract signed between Runhua Industrial and the Capital Bus Company, Tanaka Shinichiro angrily scolded Chen Geng for being despicable: Runhua Industrial's offer was even lower than the price of Denso.

The worst thing is that there is no need to use foreign exchange to purchase air conditioning compressors from Runhua Industry.

Not daring to slack off, Shinichiro Tanaka hurriedly faxed back to Japan a copy of the contract signed between Runhua Industrial and the Capital Bus Company at the first time, and solemnly introduced the situation of China's bus market to the headquarters of Denso: In China, the first line above the provincial capital, the total number of buses exceeds 30,000, including the sub-provincial capital cities, it is conservatively estimated that the number of buses exceeds 50,000, and these buses are basically not installed with any air conditioning system!

The information that Shinichiro Tanaka fed back was immediately highly valued by the headquarters of Denso Corporation: 50,000 buses waiting to be installed with air conditioning systems?!

This is indeed a huge market, but what makes Denso even more excited is another piece of news that Shinichiro Tanaka reported back in a fax: China's urban bus market is growing at a rate of more than 7% per year.

With a little calculation, you will know what this figure means, which means a minimum profit of tens of millions of dollars per year! The entire Denso executives were instantly excited: this is simply a pie falling from the sky.

But that's not all!

According to the convention, city buses and intercity buses are actually variants of different applications developed on the basis of the same body, and the ratio of the two is basically between 1:1 and 1:1.5, which means that there is a long-distance bus market of at least the same size waiting to be developed by Denso......

It's not that I don't know, but I'm shocked!

Thinking of this market, which is likely to be 100 million dollars in a few years, Denso couldn't help it anymore......

"So, Denso wants to cooperate with Runhua Industrial?" Looking at Shinichiro Tanaka in front of him, Chen Geng asked quietly.

"Yes." Shinichiro Tanaka nodded hurriedly.

Denso was coming to the door, which was not surprising to call Chen Geng, but he was curious: "So how does Denso plan to cooperate with Runhua Industrial?" ”

The implication: If you are still the same "sincerity" that DENSO used to be, then there is no need to say anything.

"Denso can provide Runhua with the latest cylinder wall coating technology, the latest combustion chamber eddy current control technology, and the latest high-voltage ignition technology," said Shinichiro Tanaka, who was already prepared, and said confidently, "In addition, if Runhua Industrial needs it, Denso can also provide you with electronic fuel injection systems for Denso's latest generation engines." ”

Cylinder wall coating technology? This is a good thing, because it can greatly reduce the friction between the piston and the cylinder;

Combustion chamber eddy current control technology? This is also a good thing, which can make the mixture burn better and improve the combustion efficiency;

As for the high-pressure ignition technology, this is also a good thing, the higher ignition energy can make the mixed oil and gas burn better in the cylinder;

As for the EFI system, compared with the current carburetor system, the advantages are also more obvious, which can more accurately control the amount of fuel injection, ignition time, and the opening time of the intake and exhaust valves.

In short, these things provided by Denso are all good things, but the more this is the case, the more vigilant Chen Gengcai becomes: Little Japan is a group of bastards who eat people and don't spit out bones, when did they become so kind?

His eyes flickered twice, and Chen Geng said: "I am indeed moved by Denso's sincerity, but, Mr. Tanaka, Denso is willing to come up with these technologies, I don't know what your requirements are?" ”

Knowing that you will definitely be tempted, Shinichiro Tanaka smiled smugly and said, "Mr. Chen, our requirements are very simple, we hope to work with Runhua Industry to develop your country's medium and large bus special air conditioning market." ”

"That's it?" Hearing Shinichiro Tanaka's conditions, Chen Geng couldn't help but be stunned for a moment, this condition of the Japanese is not harsh, but too generous.

China's huge bus and bus on-board air-conditioning system market needs to be developed urgently, Chen Geng is also very clear in his heart, such a huge market can not be allowed to Runhua Industrial monopoly, before we did not notice this market that, but now, there is Runhua Industry this example in front, as one of the major international automotive air-conditioning compressor suppliers, Denso Co., Ltd. can not watch Runhua Industrial eat meat and be indifferent, but they opened such a generous condition, it is too suspicious.

Chen Geng is sure that there is definitely a conspiracy hidden in this condition of Denso, but what kind of conspiracy will there be?

"That's it," Shinichiro Tanaka nodded sincerely, "Mr. Chen, we at DENSO are very sincere. ”

"Huh...... Of course it's good," although he was suspicious in his heart, Chen Geng's face did not change, and he suddenly asked coldly: "Mr. Tanaka, if it is cooperation, there must be a master and a secondary, so the division of labor in this is ......"

"We would like to establish a company that specializes in vehicle air conditioning modification," said Shinichiro Tanaka immediately, "according to the laws of your country, we hold a 49.9% stake, and we provide the corresponding compressor products and technical support......"

Without waiting for Shinichiro Tanaka to finish speaking, Chen Geng's heart was already bright, and he finally understood the plan of Denso Co., Ltd.: they planned to use Runhua Industry as a pedal to enter the domestic large-scale vehicle air conditioning system modification market! Not only that, maybe they will also give themselves a surprise to draw inferences, and by the way enter the market of fresh-keeping cars and refrigerated truck modifications, Little Japan really has a good calculation!

"Mr. Tanaka, the sincerity of your cooperation is indeed very strong."

"Yes, yes," Shinichiro Tanaka nodded repeatedly: "Mr. Chen, please believe that we at DENSO have shown the greatest sincerity to cooperate with you." ”

"If that's the case......" Chen Geng nodded. Suddenly, he said, "We might as well cooperate on a larger scale." ”

"Of course, of course, this is our honor," hearing Chen Geng's words, Shinichiro Tanaka was immediately overjoyed, and hurriedly said: "Mr. Chen, as a world-class auto parts supplier, please believe in our level and strength...... Don't know what you'd like to work with? ”

"Vehicle bus technology and automotive active safety control technology," Chen Geng's eyes flickered slightly: "Mr. Tanaka, I don't know what you think?" ”

"Automotive buses and automotive active safety?" Shinichiro Tanaka looked at Chen Geng in surprise: Automotive bus technology and automotive active safety technology are technologies that Denso has just begun to develop, and the Chinese are also planning to enter this area?

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"Yes, Chen Dong, variable valve timing technology has high requirements for the accuracy, stability and tools of processing equipment, and our current technology cannot be achieved at all."

"The machining part of variable valve timing is actually okay, didn't we get a batch of high-precision second-hand machine tools from Germany, these machine tools are used to process camshafts, but the solenoid valve can only be purchased ......"

"Although the torque of variable valve timing technology is good at low speed, the torque performance at medium speed is a little worse, and it is best to use it with variable valve lift technology, so that the four-valve technology, variable valve timing technology and variable valve lift technology are not a little ......bit more difficult."

"And that's not all. There are also special circuits and programs to control the opening and opening time of the solenoid valve and the variable camshaft phase regulator, which we have not done before, and there are no departments and research institutes in China that have carried out relevant technical research, if it is to be realized, the difficulty is not the general ......"

…………

Everyone is talking about the difficulty of using variable valve timing technology, in short, it is very difficult to achieve low-speed and high-torque output on the Jinfeng 680Q.

There is no doubt that the use of variable valve timing technology with variable valve lift technology can indeed greatly improve the overall performance of the Jinfeng 680Q engine, but in terms of the current technical level and ability of Runhua Industry, the mechanical hardware part is not too big a problem, but in terms of electronic technology such as control logic and system calibration, it is completely black-eyed, and if you want to make it, this time is impossible to predict, and some people even think that since the technical difficulty is so great, then we will only do the four-valve technology per cylinder, the four-valve technology is also good, it's great to adjust the compression ratio again, isn't that okay?

"No way!"

In the face of this argument of "as long as the technology is better than the previous one", Chen Geng clearly objected: "Everyone should be clear, our competitor of Runhua Industry is SAIC Volkswagen, and in the near future, we will add a FAW Audi, as a world-class car manufacturer, they not only have much stronger technical strength than us, but also have a gold signboard of 'foreign famous car brand', if we can't make breakthroughs and innovations in technology, why compete with them?" ”

As soon as Chen Geng's words came out, everyone was silent: yes, as the people have more and more knowledge, a view that "foreign things are better than China" has become a social consensus, and the people have some looks down on their own brands.

Thinking of this, everyone is a little ashamed.

"But you don't have to worry too much," Chen Geng's tone changed, and he gave a typical slap to a sweet date: "Although the variable valve timing technology and variable valve lift technology are difficult, they are not as difficult as everyone thinks, and I have done some research in this area before this." ”

"Really?" Hearing Chen Geng say this, Liu Mingming's eyes suddenly lit up, and he hurriedly asked, "Chen Dong, have you really done research on variable valve technology?" ”

Not only Liu Mingming's eyes lit up, but other people's eyes also lit up: Chen Dong's talent in design is known to everyone, it is not an exaggeration to say that Chen Dong is definitely one of the best engine designers in China, if he has started the research on variable valve timing and variable valve lift technology in advance, it must have achieved considerable results.

This technique, which they thought was very difficult just now, suddenly seems to be less difficult.

"Of course, I can't joke with everyone about this kind of thing, can I?" Chen Geng smiled, thought about it, and said: "In this way, it is better to do this, in addition to variable valve timing and variable valve lift, we will make a little technical upgrade for the 680Q: first, re-optimize the balance between the crankshaft and the engine; Second, find a way to reduce the friction coefficient between the engine parts, variable valve timing technology, variable valve lift technology and four-valve technology, the three difficulties are led by me, and the rest will be regrouped, what do you think? ”

What do you think? Of course it's good, everyone nodded hurriedly.

Just looking at the R&D roadmap given by Chen Geng, asking to make the first prototype in three months, everyone is a little scratching their heads: is it really possible to make an engine with variable valve timing technology, variable valve lift technology, four-valve technology, long-stroke piston technology, and double balancer shaft technology in 3 months? Even if it is re-developed on the basis of the Jinfeng 680Q, the difficulty is not much different from re-developing a completely new engine, right?

"I know that everyone has doubts in their hearts," in the face of everyone's questions, Chen Geng's face was extremely determined: "I said that if I can do it in three months, I will definitely be able to do it, as long as everyone can complete their own R&D tasks according to the R&D schedule I gave, then there will be no problem." (To be continued.) )