Reporters all know that the reason why Jin Xiaoqiang dared to mention such a technology at this time must be that he has a unique skill, otherwise with his habits, he would definitely not show such a flaw to attack the big guy.

In the past two days, there have been countless reporters who have died under Jin Xiaoqiang, and the cause of death of these guys is very simple, because they have doubts about Jin Xiaoqiang's design, and the end result is that Jin Xiaoqiang pulled him to the stage to whip the corpse, and the worst result is that Ozawa Yousan just before and BMW earlier.

So at this time, although everyone was more skeptical of the closed cylinder technology designed by Jin Xiaoqiang, no one dared to question loudly.

Closed-cylinder technology, developed to the present, it can be said that only Chrysler is playing, and the play is not very good, their Chrysler 300C, often because of the noise caused by this closed-cylinder technology, or unbalanced vibration and find consumer complaints.

Although all the manufacturers who developed large-displacement engine technology had considered this technology, they had to abandon this technology because they could not solve the vibration and noise problems it caused.

But now Jin Xiaoqiang is actually revisiting the old things, knowing that there are tigers in the mountains and still preferring to go to the tiger mountains, at this time everyone wants to see how he is going?

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

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

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

"Hehe, okay, first I want to correct your statement, Chrysler's current closed-cylinder technology is not HEMI technology, that is a relatively early statement. They are now using MDS technology, which was developed on the basis of the earlier HEMI technology. ”

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

"The principle of the HEMI engine is that the valves are driven by the tandem action of the camshaft-tappet-pusher-valve rocker arm, and if any one link can be interrupted, the valve can be closed. However, due to the working conditions of the engine, the opening and closing of the valves are required to be controlled quickly enough to ensure smoothness and fast response, and ensure the fun that the V8 engine should have. But as we all know, such a valve closure will eventually upset the balance of the engine, bringing uncontrollable vibration and noise to the engine. ”

This history about HEMI. Because the HEMI engine is not popular, not everyone knows about it.

Chrysler's so-called MDS, like other variable displacement technologies, relies on shutting down the corresponding cylinders to save energy. However, since the HEMI engine uses an OHV structure and the camshafts are covered with cams, it is impossible to design a complex connection mechanism between the subjib and the hydraulic control like Honda's VCM engine, so we have to find a way to solve the original structure. ”

Jin Xiaoqiang then talked about the design ideas of Chrysler's MDS, which are open secrets. Journalists familiar with him also expressed their agreement with his explanation.

In the end, Chrysler's engineers worked on the tappets that were in contact with the cams, and they designed a unique slide structure for the tappets of the HEMI engine, which was connected to the valve pushrods. There is a bayonet under the slider that can be positioned, and the bayonet can make the slider and the tappet become one, pushing the valve actuator, or making the slider move, but the tappet cannot push the valve actuator. They designed a unique oil passage for the pin in the engine, relying on the lubricating oil in the lubrication system to provide the hydraulic push pin, and the pin itself has a return spring that automatically returns when the hydraulic force disappears. When the engine is running normally, the pin will jam the slider so that it cannot move up and down freely, and the tappet directly pushes the push rod to drive the valve rocker arm. When the engine needs to shut down the cylinder, the pin is released, and the slider can slide up and down, and when the tappet moves up and down, the slider moves relative to the tappet, and no longer pushes the pusher, so that the valve is closed. At the same time, the ECU stops injecting fuel into the cylinder, and the effect of "closing the cylinder" is achieved, and the "displacement is variable". I have to say, this is a very clever idea, but our closed-cylinder technology is completely different. ”…,

Jin Xiaoqiang's next detailed explanation, although they haven't talked about their COD technology yet, but the reporters in the audience heard his explanation so well, and they have begun to believe that this kid must have his own set of closing the valve.

"First of all, our engine cylinder count is not designed according to the layout of the traditional V8 engine 1357, 2468, we design it according to the order of 12345678. Then we installed an AVS system on the engine, and we also added a set of cams with a zero degree angle to achieve a zero degree angle valve lift. The main function of this AVS system is to realize the change of valve lift by switching cams at different angles, when the coolant of the engine is above 30 degrees, the gearbox is above 3 gears, and the demand for torque of the vehicle is between 25% and 40% of the maximum output torque, the COD system will automatically switch the engine from the 8-cylinder working state to the 4-cylinder working state, and the AVS battery valve will push out the zero-degree camshaft at this time, and the work of the 2358 cylinder has been stopped. At this time, the engine is in the working state of the V4 engine composed of 4 cylinders such as 1467. This maximizes fuel savings and minimizes emissions. ”

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.

"Degree zero camshaft? Is this a god thing? ”

"That's just the thing installed, isn't this a waste snack?"

"Could it be that this Jin Xiaoqiang is crazy? Zero degree camshaft, I can't figure out why he installed such a thing? ”

"Haha, finally showing your feet, right? How do you explain it this time? ”

When the reporters in the audience heard the zero degree camshaft, there was a small sensation, and many people were talking about it in the audience, and everyone couldn't understand such a design, waiting for Jin Xiaoqiang to give a reasonable explanation.

And Jin Xiaoqiang ignored that completely, and just continued to explain according to his own ideas.

"And it's not just for stop-and-go urban congestion, at high speeds. He can work as well. ”

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

"At high speeds, the gearbox aggressively ramps up to the highest gear to keep the revs as low as possible. But for an 8-cylinder engine, even in the most economical conditions, it will not have outstanding fuel consumption. Our pneumatic drive-on-demand system maximizes the performance of an 8-cylinder engine in economic conditions. This is the most stringent technical test I have put forward to myself so far, and I later upgraded to the original AVS system to achieve this need, and this upgrade method can be achieved by installing a set of zero-stroke camshafts on both sides of the intake and exhaust air, that is. When the AVS actuator switches the cam to zero stroke, the camshafts on both sides of the intake and exhaust air cannot drive the valves to complete the intake and exhaust action, and at the same time, the fuel injection system stops supplying fuel to the corresponding cylinder, and the ignition system also stops working. In such a state, the engine computer will adjust the power output according to the load of the vehicle and the working condition of the engine, from the data point of view, the torque output of the V4 engine can be 120 Nm? Rice to 250 N ? meters between the variations. That's the main reason why I put a zero-degree camshaft on this engine. ”

When the reporters in the audience heard such an explanation. Only then did I understand the wonderful use of this zero-degree camshaft, and sure enough, the brain of a genius cannot be measured by ordinary people's thinking!

It's no wonder that people can become world-class car design masters, and they can only be sling reporters......

"And because after we have this engine that works with its cylinders closed. The arrangement mode of V4 cylinders is used, so that the work between the cylinders plays a good role in counteracting each other and preventing vibration. ”…,

Jin Xiaoqiang's explanation made the reporters understand the beauty of this set of technology, after the cylinder closure that has been plaguing many manufacturers, the vibration problem caused by the engine has been solved in this way, which is really ......

What the hell did this guy's head look like?

"In order to control the noise and vibrations caused by the inspection more effectively, I also applied a coating treatment to the inner wall of the cylinder. I applied a DLC-like diamond coating to the inner wall of the cylinder to reduce the friction between the piston and the cylinder. In addition, the active electronically controlled engine mount relies on directional counting pulses to attenuate low-frequency vibrations, thereby reducing the transmission of vibrations from the vehicle body into the vehicle. This optimized design ultimately satisfies my purpose of maximizing the control of the vibration and noise of the V4 engine, which is why this amazing 4.0LV8TFSI engine has long been ......."

Jin Xiaoqiang kept bragging on stage, and the reporters had nothing to say at this time. Indeed, theoretically, the design of others is really completely impeccable.

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

At this time, Jin Xiaoqiang thought that if the Audi engineers who had spent several years of their lives in the previous life had seen such an excellent work that they had spent several years designing and was easily plagiarized by themselves, I really don't know how many of them would vomit blood or simply commit suicide......

Jin Xiaoqiang is still constantly boasting about his design on stage, and the reporters in the audience can only obediently kowtow, what Jin Xiaoqiang says, they believe it, because it is true that they have never heard of the technology that Jin Xiaoqiang said.

And these technologies are combined, and these reporters can only come to one conclusion, that is, this Skyline Light J is indeed high-end enough and luxurious enough!