Facing everyone's expectant eyes, Chen Geng nodded unceremoniously: "Of course!"

After a brief pause, Chen Geng continued: "When the development of this car is completed, the first thing we have to do is to go to the Nürburgring Nordschleife in Germany and get the best result of a production car. ”

"Hiss......"

A group of engineers and designers all gasped when they listened: the boss is too ambitious, right?

American auto companies, the most favorite to play is 0-400 acceleration, every time a so-called performance car is launched, it runs a 0-400 acceleration, and then proudly tells American consumers: Look, the 0-400 acceleration of our car is like this, our car is old Niu X!

But so far, no American automaker has dared to put its own performance car on the Nürburgring Nordschleife, and the reason is that the Nürburgring Nordschleife in Germany is a very challenging track for the performance of the car, and these American automakers know very well the cornering performance of their products...... The "straight king, the bend is dead" who is more scum than scum, and they are talking about.

Automotive engineers and designers in the United States take this situation for granted, but now their own owners are planning to go to the Nürburgring Nordschleife to run laps, which is really ......

"Boss, do you mean it really?" said David Leibson's voice.

Chen Geng smiled slightly: "I hope this car can run for 8 minutes." ”

“......”

No one is talking!

Chen Geng's jaws all fell in front of him.

Why did Chen Geng's goal make everyone unbelievable?

Because at the moment in 1981, no production car could run an 8-minute lap time at the Nürburgring Nordschleife, let alone an 8-minute lap speed, even if this speed was amplified to 8 minutes and 0 seconds, no production car could do it, but now, his own boss actually said that he wanted to run into 8 minutes at the Nürburgring Nordschleife?!

Although 7:59.999 is also 8 minutes, it can ......

Do you know that this joke is not funny at all, bastard!

"I know it's difficult, but if we make it ......" Looking at the guys in front of him who could stuff an ostrich egg with their mouths open one by one, Chen Geng said slowly: "Gentlemen, you know what this means, right? ”

That's right!

A group of guys who were immersed in the shock and whose IQ dropped to zero in an instant suddenly reacted: The boss is the world's top car design master, if he didn't have at least five or six points of certainty about his plan, he dared to put forward such a goal? And since the boss has so much confidence in his plan......

Puff ...... Puff ......

A group of engineers, each of whom was as excited as a chicken blood, turned red, and was careful of the wild jump of the liver: once our car can really run at the Nürburgring Nordschleife for 8 minutes, it means that this car will be the fastest production car in the world, what Ferrari, what Lamborghini, what Porsche, all for Lao Tzu to stand back!

As an engineer of the project, once the car is successfully developed, his income will inevitably rise......

So what's there to hesitate about?

Done!

"Sir, say it," finally someone couldn't help it and shouted loudly: "Do what you say, we'll do it!"

Chen Geng smiled: "Very good......"

........................

"We all understand a truth, among the factors that determine whether a car can run fast enough in the corner, the power can only be ranked second at most, and the first place is always the load ratio of the front and rear axles, that is to say, the comprehensive design of the power system and the chassis, if you want to achieve a perfect load ratio of the front and rear axles, the best way is the mid-rear drive, but in my opinion, such a power system layout scheme is still unreasonable, so I redesigned a scheme: front engine + rear gearbox +Four-wheel drive, both the engine and the gearbox, is located between the front and rear axles......"

The engineer sitting in front of the student looked at the basic architecture of the car shown on the projected large-scale design drawing, and immediately calculated silently in his heart: looking at the design of the boss, the length of the front overhang was significantly shortened, and the length of the engine compartment was significantly lengthened, so that the center of gravity of the engine fell behind the front axle, and correspondingly, the transmission plus the final drive and differential were placed on the rear axle, and the center of gravity basically fell in front of the rear axle, counting the fuel tank located in front of the rear axle, although there was no detailed calculation, but the load of the front and rear axles should be infinitely close to 50:50......

Coupled with the front double wishbone + rear multi-link suspension system, God, for a supercar that has to rack its brains for the distribution of every load, such a design simply makes the load on the front and rear axles reach a perfect level!

Why didn't anyone think of separating the engine and transmission before?

Why do you always have to connect the engine and gearbox together?

A group of designers are full of resentment.

But the engineers had a different question in mind......

"Sir," someone raised his hand and asked in a loud voice, "I looked at your design, and it's great, but here's the problem, how do you get the torque to be distributed freely between the front and rear wheels when the car doesn't slip sideways?"

As soon as this question came out, everyone began to think about the problem.

Nowadays, all four-wheel drive systems are born for off-roading, and when does the off-road vehicle need to distribute torque and power freely? Of course, when the wheels slip, the requirements of a good four-wheel drive system are that when any wheel slips, the wheels that slip should be locked immediately, and the four-wheel drive system immediately distributes the power to the wheel that does not slip.

An excellent four-wheel drive system can provide enough power for the only wheel that does not slip even if only one wheel does not slip to help the car get out of trouble.

But then the problem also comes, now all four-wheel drive is designed for "side skid", but the current car of the four-wheel drive needs to achieve free distribution of torque and power between the front and rear wheels when there is no side skid.

How?

The eyes of a room full of engineers focused on Chen Geng's body.

"Actually, it's very simple," Chen Geng's expression was extremely relaxed under the nervous and expectant gaze of everyone: "I have redesigned a four-wheel drive system, a four-wheel drive system that can distribute torque and power according to the needs of the front and rear wheels without skidding. ”

“......”

hat？！

You mean you've got the 4WD system in place?

Are you kidding?!

"The traditional four-wheel drive system on the off-road vehicle distributes power through the mechanical locking of the center differential, but this four-wheel drive system I designed, I call the multi-plate clutch four-wheel drive system," Chen Geng said, pressing the remote control, and the projector automatically cuts into the next projection picture: " Look, the core of this multi-plate clutch four-wheel drive system is this clutch, this clutch has 6 pairs of friction discs, each friction disc has an electronic system independent control, each friction disc is pushed by a separate hydraulic device, in short, this is six small clutches.

This system can only be activated at different speeds between the front and rear wheels, which is why people wonder why the diameter of the front wheels is about 1% larger than the diameter of the rear wheels.

Due to the speed difference between the front and rear wheels, the speed of the opposing friction discs on each pair of friction discs will be different. When the hydraulic device pushes the two friction discs to engage, a part of the torque will be transmitted from the rear wheel to the front wheel, when the combined friction disc is more and more, more and more torque will be transmitted from the rear wheel to the front wheel, when all the friction discs are locked, the front and rear torque distribution will naturally reach 50:50, and can also be required, calibration in the engineering design stage...... Gentlemen, who has a problem?"

Questions?

There is also a wool problem, a room of engineers are all shocked by the four-wheel drive system designed by their own boss, and they don't know what to say: Nima! The four-wheel drive system can still play like this?!

Everyone is an expert in the automotive field, and after Chen Geng proposed this working model, he immediately knew that it was okay to do so, at least from a technical point of view.

————————————

PS: Brothers, please wait a few minutes.

"The traditional four-wheel drive system on the off-road vehicle distributes power through the mechanical locking of the center differential, but this four-wheel drive system I designed, I call the multi-plate clutch four-wheel drive system," Chen Geng said, pressing the remote control, and the projector automatically cuts into the next projection picture: " Look, the core of this multi-plate clutch four-wheel drive system is this clutch, this clutch has 6 pairs of friction discs, each friction disc has an electronic system independent control, each friction disc is pushed by a separate hydraulic device, in short, this is six small clutches.

This system can only be activated at different speeds between the front and rear wheels, which is why people wonder why the diameter of the front wheels is about 1% larger than the diameter of the rear wheels.

Due to the speed difference between the front and rear wheels, the speed of the opposing friction discs on each pair of friction discs will be different. When the hydraulic device pushes the two friction discs to engage, a part of the torque will be transmitted from the rear wheel to the front wheel, when the combined friction disc is more and more, more and more torque will be transmitted from the rear wheel to the front wheel, when all the friction discs are locked, the front and rear torque distribution will naturally reach 50:50, and can also be required, calibration in the engineering design stage...... Gentlemen, who has a problem?"