reborn industrial empire

Reporters all know that the reason why Jin Xiaoqiang dared to mention such a technique at this time must be because he has a unique skill. Otherwise, based on his habits, he would definitely not expose such a flaw for everyone to attack.

In the past two days, countless reporters have died at the hands of Jin Xiaoqiang. The cause of death of these guys is also very simple. It is because they had doubts about Jin Xiaoqiang's design. As a result, they ended up being dragged to the stage by Jin Xiaoqiang and whipped.

Among them, the ones with the worst results were the Ozawa Yuzo not long ago, and the BMW even earlier.

So at this time, although everyone was quite skeptical about the cylinder closing technology designed by Jin Xiaoqiang, no one dared to question it loudly.

With the development of cylinder closing technology, it can be said that only Chrysler is playing with it, and it is not very good at it. Their Chrysler 300c often suffers from noise or unbalanced vibration caused by this cylinder closing technology.

Find consumer complaints.

Although all manufacturers that develop large-displacement engine technology have considered this technology, they later had to abandon this technology because they could not completely solve the vibration and noise problems it caused.

But now Jin Xiaoqiang is actually bringing up old things again, knowing that there are tigers in the mountains, he still prefers to travel to the tiger mountains. At this time, everyone wants to see how he is going on this road?

What is the difference between his so-called cod system and Chrysler's hemi technology?

"Mr. Jin, can you explain in detail what is the difference between your COD technology and Chrysler's HMI technology?"

An American reporter who prefers V8 engines finally couldn't hold it back and asked Jin Xiaoqiang his question.

"Haha, okay, first of all, I want to correct your statement. The cylinder closing technology currently used by Chrysler is not hemi technology. That is a relatively early statement. What they are using now is mds technology, which is based on the early hemi technology.

Developed on.”

Jin Xiaoqiang's explanation made the reporters in the audience nod.

"The principle of the hemi engine is that the valve is driven by the series action of the camshaft-tappet-pushrod-valve rocker arm. If any link can be interrupted, the idea of ​​closing the valve can be realized. However, due to the engineering of the engine

situation needs, requiring the opening and closing of the valve

The closing control is fast enough, so as to ensure the smoothness and fast response speed, and ensure the original fun of the V8 engine. But everyone also knows that such closing of the valve will eventually break the balance of the engine and give the engine

Causes uncontrollable vibration and noise.”

This history about hemi. Because hemi engines are not popular, not everyone knows it.

"Chrysler's so-called MDS is essentially the same as other variable displacement technologies. It relies on shutting down the corresponding cylinder to save energy. However, because the HMI engine uses an OHV structure, the camshaft

With so many cams, it is impossible to design a more complicated auxiliary rocker arm and hydraulically controlled connection mechanism like Honda's VCM engine, so we can only find a way to build on the original structure."

Jin Xiaoqiang then talked about the design ideas of Chrysler's MDS, which are all open secrets. Reporters who knew about it also expressed their agreement with his explanation.

"In the end, Chrysler engineers' solution was to work on the tappets that are in contact with the cam. They designed a unique slider structure for the tappets of the HMI engine. The slider is connected to the valve pushrod. There is a slider underneath the slider.

Positioning bayonet, the bayonet can connect the slider and tappet

Become one, push the valve pushrod, or move the slider, but the tappet cannot push the valve pushrod. They designed a unique oil passage in the engine for the bayonet, relying on the lubricating oil in the lubrication system to provide hydraulic pressure to push the bayonet.

The bayonet itself has a return spring, which can automatically

Return to position. When the engine is running normally, the bayonet pin will block the slider so that it cannot move freely up and down. The tappet directly pushes the push rod to drive the valve rocker arm. When the engine needs to shut down the cylinder, the bayonet pin is loosened and the slider will move freely.

It can slide up and down. When the tappet moves up and down, the slide block and the tappet move relative to each other.

, no longer push the push rod, so that the valve is closed. At the same time, the ECU stops injecting fuel to the cylinder, which achieves the effect of "closing the cylinder" and achieves "variable displacement". It must be said that this is a very

A clever idea, but our closed-cylinder technology is completely different from this one."

Although Jin Xiaoqiang's next detailed explanation did not mention their COD technology, the reporters in the audience heard his very knowledgeable explanation and began to believe that this guy must have his own way of closing valves.

"First of all, our engine cylinder number is not designed according to the layout of 1357 and 2468 of the traditional V8 engine. We designed it in the order of 12345678. Then we installed a

An avs system is installed, and a zero-angle cam is also installed to achieve zero-angle valve lift. The main function of this avs system is to achieve changes in valve lift by switching cams at different angles. When the engine cools

When the liquid is above 30 degrees, it becomes

When the transmission gear is above 3rd gear and the vehicle's torque demand is between 25% and 40% of the maximum output torque, the COD system will automatically switch the engine to 8-cylinder operation.

The state switches to the 4-cylinder working state, avs battery valve

At this time, the zero-degree camshaft will be pushed out, and the work of cylinder 2358 will be stopped. At this time, the engine is in the working state of a v4 engine composed of 4 cylinders including 1467. This will save fuel to the maximum extent and reduce

emission."

Jin Xiaoqiang's explanation couldn't help but make the reporters in the audience feel refreshed. This is indeed a very bold and unique creative design.

"Zero-degree camshaft? Is this a magical thing?"

"Just because you have installed something like this, isn't this a useless snack?"

"Is this Jin Xiaoqiang crazy? It's a zero-degree camshaft. I don't understand why he installed such a thing?"

"Haha, the trick has finally been revealed, right? How do you explain it this time?"

When the reporters in the audience heard about the zero-degree camshaft, there was another small sensation. Many people were talking in the audience. Everyone could not understand such a design and were waiting for Jin Xiaoqiang to give a reasonable explanation.

Jin Xiaoqiang, on the other hand, completely ignored that and just continued to explain according to his own ideas.

"And this system is not only designed to deal with stop-and-go urban traffic, it can also work when driving at high speeds."

Jin Xiaoqiang's next words once again caused an uproar among the reporters in the audience.

“When cruising at high speed, the transmission will actively shift to the highest gear to maintain the speed as low as possible. But for an 8-cylinder engine, even under the most economical operating conditions, it

It will not have outstanding fuel consumption performance. And our cylinder demand system

The system can improve the performance of the 8-cylinder engine to the greatest extent under economic conditions. Such strict requirements are also the most stringent technical test I have put forward for myself so far. Later, I upgraded based on the original avs system.

To meet this demand, this upgrade method is on the camshafts on both sides of the intake and exhaust

This can be achieved by installing a set of zero-stroke cams. That is to say, when the avs actuator switches the cam to zero-stroke, the camshafts on both sides of the intake and exhaust cannot drive the valves to complete the intake and exhaust movements. At the same time,

, the fuel injection system stops supplying fuel to the corresponding cylinder, and the ignition system will also stop working. In this state

Under this condition, the engine computer will adjust the power output according to the load of the vehicle and the operating conditions of the engine. From the data point of view, the torque output of the V4 engine can vary between 120 Nm and 250 Nm. This is also why I

The main reason why a zero-degree camshaft is installed on this engine.”

When the reporters in the audience heard this explanation, they understood the wonderful function of this zero-degree camshaft. It turns out that the brain of a genius cannot be measured by ordinary people's thinking!

No wonder someone can become a world-class car designer, but I can only be a reporter...

"And because our engine uses the V4 cylinder arrangement mode after achieving cylinder closure, the work between the cylinders can effectively offset each other and prevent

Vibrating effect.”

Jin Xiaoqiang's explanation made reporters understand the beauty of this technology. The vibration problem caused by the engine after cylinder deactivation, which had been bothering many manufacturers, was actually solved in this way. It's really...

How does this person's head grow?

"In order to more effectively control the noise and vibration caused by the inspection, I also coated the inner wall of the cylinder. I coated the inner wall of the cylinder with a DLC-type diamond coating to reduce the size of the piston and cylinder.

friction between. Moreover, the engine mount using active electronic control depends on

Relying on directional counting pulses can also weaken low-frequency vibrations, thereby reducing the transmission of vibrations from the car body into the car. Such an optimized design finally meets my purpose of maximizing the control of the vibration and noise of the V4 engine, which has long been the case.

A magical 4.0ltfsi engine..."

Jin Xiaoqiang kept bragging on the stage, but the reporters were completely speechless at this time. Indeed, theoretically speaking, their design is completely impeccable.

But how could they know what Jin Xiaoqiang was thinking at this time?

At this time, what Jin Xiaoqiang was thinking was that Audi engineers a few years later in his previous life would be really unhappy if they saw that such an outstanding work they had spent several years designing was plagiarized so easily.

Who knows how many of them will vomit blood or simply commit suicide...

Jin Xiaoqiang continued to brag about his design on the stage, while the reporters in the audience could only act like kowtows. They believed whatever Jin Xiaoqiang said, because it was true that the technology Jin Xiaoqiang mentioned was true.

, they have never heard of it at all.

When these technologies are combined together, these reporters can only draw one conclusion, that is, this Skyline Light J is indeed high-end and luxurious enough!!~!

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