Variable valve engine is also called VVT engine.
Under specific engine operating conditions, this approach increases intake charge and efficiency by controlling the intake valve opening angle advance and delay to adjust intake and exhaust volume and timing, and by varying the valve overlap angle. This improves overall engine performance, including power, torque, emissions, fuel economy, and comfort, by better organizing intake swirl and regulating cylinder burst pressure and residual exhaust gas volume. This resolves the technical contradictions inherent in traditional fixed-valve timing engines, where various performance indicators are constrained by one another.
This technology originated in the 1960s and was first used by the Italian manufacturer Alfa Romeo in the early 1980s.
But it was Toyota that really promoted this technology. In 1995, Toyota promoted this technology worldwide.
During this period, the application of this technology was still in its early stages. Whether it was a hydraulic helical spline phaser, a hydraulic vane phaser, or a star rotor phaser, they were all early products, so the response speed of the VVT system was average.
Since Toyota started to use it in their cars, Nanwan has also been researching this technology. However, Nanwan is not researching the VVT technology using the three phasers mentioned above, but is developing a mid-mounted hydraulic VVT system in one step.
Because the mid-mounted OCV is installed inside the rotor of the phaser, the OCV is close to the oil chamber inside the phaser, and the oil pressure loss in the oil channel is small during operation, and the response speed is higher than that of the traditional VVT system.
Wan Feng only knew a little about this technology. In the late period of his previous life, around 2010, foreign manufacturers began to use this technology on a large scale.
Car dealers always brag about this and use it as an excuse.
The car owners who buy cars installed with this kind of engine are also half-baked and use this to belittle those car owners who don't install this kind of engine. If you ask them, they can't explain clearly.
Wan Feng, who also wanted to buy a car around 2015, did a lot of research on the Internet about what this mid-mounted hydraulic VVT engine was.
Unfortunately, although he had read many articles introducing this type of engine, he did not fully understand it.
What he explained to Asada Nobuyuki, Gun Fukulai and others in this life was just a mechanical retelling. He could only tell 80% of the content, and the rest had to be imagined by Asada Nobuyuki, Gun Fukulai and others.
In recent years, Nanwan Engine has mainly been developing inline four-cylinder engines, and in fact has made various improvements to the two basic models NW478 and NW479 engines.
However, the six-cylinder engine that was officially launched for research and development last year is completely different from the previous ones.
The cylinder diameter is 82 mm, and there are two types of forms: L6 and V6. This is simply a newly developed new engine.
When the project was launched last year, Wan Feng estimated it to take three years. I wonder if Asada Nobuo's team can complete it.
If it can be installed on vehicles by 2001, it will be able to take over the executive vehicles that were previously equipped with 479 engines.
Another one is four-wheel drive.
As an executive car, Wan Feng still believes that four-wheel drive is a guarantee, although it may not be of any use in normal times.
Because the car looks high-end with four-wheel drive, does that mean he has the nerve to charge more?
After laying the groundwork and building relationships in the early stages, it's inevitable that they'll raise the price later on. Don't waste public money, right? Don't worry, they might be corrupt too...
I didn't say that, I didn't even think about it.
I still have a high level of trust in someone in the government.
Asada Nobuyuki, Fukulai and the Tibetan officer, the three giants of Nanwan gasoline generators, all came and reported to Wan Feng on the progress of the research and development of the new engine.
The two new six-cylinder engine types were developed almost simultaneously.
The three people were divided into two groups. Asada Nobuyuki and Gunfuku studied V6, while the Tibetan officer team developed L6. However, the two teams were not completely independent, and they sometimes worked together to solve problems.
Relatively speaking, the Tibetan officer's inline 6-cylinder engine research and development progress can be faster. After all, Nanwan has been specializing in inline 4-cylinder engines in recent years, and the accumulation of experience is still very important.
As for V-type engines, Nanwan is completely blank. Although the principles are similar, the details are very different.
The Tibetan officer said that the L6 engine might be available in vehicles within three years, while Asada Nobuyuki was cautious and pessimistic about the progress of the V6 engine.
All Wan Feng could do was to try his best to comfort them and tell them not to worry. The engine was not a problem that could be solved with a snap of the butt or a thought. It was a typical slow and careful job.
Of course, there is also the promise of providing money and people. His task is to solve all the worries of these scientific researchers. You just need to put all your energy into research and development, and I will solve other problems.
Wan Feng now has some idea about these two engines. The inline six-cylinder engine is intended to be installed in the Tibetan military officer's opinion. A prototype can be produced by the end of this year. After a year of various tests next year, if everything goes well, it can be basically finalized by the end of the year.
The V6 may not be finalized until the end of 2001.
Wan Feng was no longer anxious now that he had a clear mind. One cannot drink hot soup in a hurry. It is better to let nature take its course.
He was mentally exhausted from receiving these leaders today, so he decided to go home early to enjoy his family and relax his tense and tired nerves.
When I returned home, I unexpectedly found Luan Feng was also at home.
"Hey! Why are you back so early today?"
Luan Feng rolled her eyes at Wan Feng and said, "If you can come back so early, then I'm not allowed to come back earlier."
"This is not good. As the CEO of a company, you should set an example and not come back early all the time. This will have a bad influence on your employees." Wan Feng said seriously, his words clear and loud.
Luan Feng looked at him unhappily: "He is an official after all. If you don't know him well, you might think he is some kind of good-for-nothing when he speaks in such an official tone."
Zhang Xuan just smiled and joined in the bickering, concentrating on teaching her daughter to read.
"My daughter is so good, come here, daddy kisses you."
Wan Yu, who was sitting, stretched out her little face and let Wan Feng kiss her, then she touched her face with her little hands, obviously pricked by the beard.
"Oh my! Why is she learning this? My daughter is only one year old and she's learning this. This is ridiculous. Don't exhaust her brain."
It’s indeed too early for Wan Yu to learn this. What’s the point of learning this if school hasn’t even started yet?
On the contrary, my son should be learning these things now, but my son...
"Where's your son?"
Wan Feng asked Luan Feng.
"Son? Just now you were chasing ducks down there with a stick!"
"Are you really capable of this? Are you planning on letting your son become as dumb as you?"
Luan Feng was angry: "Who are you calling stupid? Say it again."
"Tsk! You don't admit you're stupid, do you? I'll give you a question and if you can answer it I won't call you stupid."
Luan Feng immediately felt guilty: "Is it okay if I don't answer?"
She really didn't have the confidence to answer Wan Feng's question.
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