Automotive Black Technology Chapter 484: : Unique DVVT technology (please subscribe!)
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Zhengxin Volkswagen Hongguang's car, um... or Wuling Hongguang,
In fact, there are only two power versions on the drawing, one is equipped with a P-TEC, 1.2L displacement engine. One is equipped with P-TECDVVT, a 1.5L displacement engine.
In the previous time and space, Wuling Hongguang's 1.2L engine was actually installed on the basic version in order to reduce the price. The main market is actually the 1.5L P-TECDVVT engine version.
As far as Li Fanyu knows, the best-selling model of Hongguang in that time and space was this version. As an MVP with a small displacement itself, the 1.5L engine using DVVT technology is already fuel-efficient enough. Therefore, out of the principle of good research and development and good manufacturing, he did not exchange the 1.2L engine version from the space.
You must know that this car is designed to meet various commercial and household functions.
Although the small displacement is fuel-efficient, for Hongguang, which is applicable to third- and fourth-tier cities and towns, in order to lower the price, it is obviously a waste to make a model that roars when pulling heavy loads. Not kind.
In the drawings delivered to the R&D center, he designated the DVVT engine as the focus of R&D.
Although it is a joint production, according to Li Fanyu's idea, the engine must be manufactured and supplied by Zhengxin Power Company. Even with the controlling stakes of those twelve car companies, people's hearts are unpredictable after all. In order to ensure that these car companies can obey integrity, they must take core technologies into their own hands for at least the next five years.
As the saying goes, it is essential to be on guard against others.
Although Hongguang is an unspectacular car, this car is equipped with a technology that can be called incredible for the automobile industry in this time and space.
That's DVVT.
Many people don’t know what this DVVT is. In fact, this thing is just a set of accessories added to the engine.
What is this attachment for?
Help the engine breathe!
To explain this clearly, we actually have to start with VVT technology.
The working principle of the engine, to put it bluntly, is that after the gasoline enters the cylinder and is compressed by the piston, the air put in the mixing valve is ignited and burned, generating heat to drive the piston. The piston then converts the thermal energy into potential energy and transmits it to the engine crankshaft to generate power.
This method of energy conversion can be said to be one of mankind's greatest inventions.
However, with the popularity of engines, the rise in oil prices and the gradual deterioration of the environment. People are constantly optimizing and transforming engines based on this set of principles, trying to make engines more economical, more powerful, and more durable...
So, VVT technology was born.
This technology, to put it bluntly, uses an electronic control unit to adjust the engine's air intake volume and valve opening and closing time angle according to the engine's operating conditions. Optimize the amount of air entering and improve combustion efficiency.
Improving combustion efficiency means saving more fuel, which means more fuel economy.
However, after VVT technology was put into use, people found that although this technology can save fuel for the engine, some shortcomings also emerged - that is, as the power-to-liter ratio increases, the engine speed and torque appear to be certain. weakened.
So after summarizing the shortcomings of VVT technology, DVVT technology came into being.
The DVVT engine can be said to be the continuation of the VVT engine, but it is better than the previous one. By using a relatively simple hydraulic cam system, DVVT not only improves the combustion ratio, but also overcomes the shortcomings of insufficient speed and torque caused by constantly adjusting the valve.
The reason why this effect can be achieved is that the VVT engine is controlled by an electronic unit, so it can only adjust the intake valve. The DVVT engine simultaneously controls the intake valve and exhaust valve through a hydraulic cam system. The DVVT engine that realizes simultaneous adjustment of the intake and exhaust valves has the characteristics of high torque at low revolutions and high power at high revolutions.
It looks complicated, but it’s actually just like human breathing.
VVT only regulates "inhalation", but DVVT also regulates "breathing"!
This control method is technically called "dual continuously variable valve timing." It can be said that in the time and space that Li Fanyu was in before, this was the most advanced situation in the valve variable system.
However, in this time and space, this technology is not available yet! live! exist!
Those Japanese car companies, which are famous for their fuel efficiency, are still struggling with VVT!
That's why Li Fanyu attaches so much importance to the Hongguang model.
In this time and space, Japanese cars are said to be fuel-efficient. But Li Fanyu believes that after mastering DVVT technology, Zhengxin will have the ability to challenge Japanese engines in the future!
After Liu Qing saw the structure of the Hongguang P-TECDVVT engine that Li Fanyu passed on, he immediately put away his previous reluctance. After understanding the principle of engine valve adjustment, he could no longer hold back the shock in his heart.
In his opinion, this is simply a technology that can revolutionize automobile engines!
Not only him, but the engineers in the R&D center were also shocked. They really can't imagine how powerful Zhengxin will be in the automobile market with this technology!
What is the current automotive industry comparing to?
Technology!
What is the significance of technology?
Let consumers feel more comfortable, safer and more affordable.
In China, where oil prices continue to rise, whoever masters a more fuel-efficient and powerful engine will undoubtedly master immeasurable competitiveness!
Facing the excitement of everyone, Li Fanyu seemed calm and indifferent.
Although this guy has no integrity and laughs at everything, he is very dedicated to his career.
Taking one step and counting it as three steps is a compliment to him. He does not have the kind of wisdom that is close to that of a demon. But it is no exaggeration to say that every model produced by Zhengxin. It wasn't just because his head was hot for a long time.
Behind these models, lies his plan to achieve the highest level of Zhengxin step by step!
Hongguang is such a model.
Well, to put it in a classy and slightly pretentious way, this is a strategic model.
After motivating the R&D team and asking them to step up and complete the R&D. Li Fanyu came to Zhengxin Power Company. After inspecting the ongoing production system upgrade, he called Pan Qiang and Sun Guoyi together.
After instructing the two people to pay close attention to the system upgrade, and to ensure that the existing models can be upgraded while ensuring the supply of market demand, and to ensure that the production quality is not affected by the upgrade, a branch task was issued.
That is to mobilize existing technical engineers to form an expert working group. Go to the twelve car companies that have formed alliances with Zhengxin to help them adjust and integrate their production lines.
For this task, even Pan Qiang, who completed various tasks as a soldier, couldn't help but look down.
"Director Li, the company's technical engineers are all busy on the production line with system upgrades, and there is really no manpower available!"
Sun Guoyi's face with the Chinese character "囧" turned into a face with the character "囧", "Yes, Chairman, you can't just split a person in two and use it!"
Seeing these two people complaining, Li Fanyu tilted his head, "Don't you still have a group of treasures? How can you say there is no one?"
Baby?
What baby?
Seeing the puzzled expressions on their faces, Li Fan said with a silly smile: "Those top students at Western Polytechnic University have been practicing at the grassroots level for several months. Shouldn't it be time for you to spit it out?"
Sun Guoyi slapped his thigh, "No, Director Li, this is not possible!"
This big brother shakes his head like a rattle; those quasi-engineers who have mastered production technology and have a lot of theoretical knowledge in their heads are now regarded by Sun Guoyi as the power company's number one trump card!
I didn’t feel that much at first, but after this period of training, these top students have played an important role in the power company.
Now that Li Fanyu has come to ask for help, it is almost tantamount to poaching Sun Guoyi’s heart!