In the conference room, except for Ling Shizhe, everyone frowned, and was very dissatisfied with Navalli's answer, as long as anyone who knows something about motorcycle technology knows that the motorcycle engine has very little power compared to the car, so the motorcycle transmission structure is much simpler than the transmission used in the car, and the types are much less, only two kinds of variable speed and continuously variable speed.

The former is used in high-end motorcycles with high power, and the latter is generally used in low-end pedal motorcycles, because the belt is not reliable enough, when the belt is loose, it is easy to slip, and the belt life is very short, and the best toothed triangle belt is only 2 or 30,000 kilometers of life at most due to the factors of the car.

The two motorcycles painted by Ling Shizhe have been seen by everyone who participated in the meeting, "Spider-Man" inverted three-wheeled and "Golden Wing" 1800L, both of which belong to high-end luxury motorcycles, there is no doubt that they should choose a step-by-step gearbox, but Navali actually said that both gearboxes are not suitable, so everyone can't bear it, Nima, you are fooling the boss!

But Ling Shizhe was not annoyed, because Navali's words made him catch something, but it seemed to be a little worse, and after thinking about it for a long time, he didn't come up with the essentials, so he asked: "Since neither of the two transmissions is suitable, which one is suitable?" ”

"Boss, have you ever heard that recently there is an automatic transmission called DCT in Europe?"

Foster was surprised: "Why is Valli, you want to develop a special automatic transmission for motorcycles?" ”

Navali nodded and said: "Yes, you must know that the current car has developed to a new technological stage, and automatic transmissions have begun to be used in some middle and high-end cars, and I think this is a development trend of the future of automobiles." Since it is a trend, is it the same for motorcycles, and there is no special automatic transmission for motorcycles at present, should we study one? ”

Navalli's words have aroused a strong interest in everyone, most of the high-end motorcycles are used in gear meshing type stepless transmission, this transmission is often used with wet multi-plate friction clutch, in the motorcycle driving, the rider has to keep shifting, so it is not very convenient, if there is a special motorcycle automatic transmission, then it will be much more convenient, and the ride experience will be greatly increased.

But the question is, which transmission should I use? AT, DCT, CAT, or AMT? Each of these transmissions has its own advantages and disadvantages, which one is the most suitable? Navali knocked down all the people who sat down again.

None of them were motorcycle experts, and Avali didn't know about it, let alone the others.

But Ling Shizhe's eyes lit up, and he finally remembered that the future development direction of motorcycle transmissions, among the many automobile transmissions in later generations, DCT is undoubtedly the first choice for high-end cars, because it can provide uninterrupted power output in addition to the flexibility of manual transmissions and the comfort of automatic transmissions.

The DCT system can bring the driver the feeling of driving a racing car, it eliminates the sense of torque interruption of the manual transmission when changing gears, making the driving more agile and having a more handling experience, and the future generations of high-end sports cars have taken DCT as the first choice.

Why do people buy high-end motorcycles with large displacement? There are also a lot because high-end motorcycles can provide drivers with a driving experience that cars do not have, since it is a driving experience, then the motorcycle must give the rider a feeling of lightning shock, it requires the motorcycle to have a high degree of sensitivity when changing gears, and there can be no sense of interruption, otherwise why buy such an expensive motorcycle?

Therefore, according to this standard, it is clear what kind of transmission to choose for the motorcycle - DCT! That's right, it's DCT, remember that in 09 years, Honda developed the world's first motorcycle dual-clutch transmission.

In his previous life, a friend of Ling Shizhe worked in Honda's 4S shop, and the manager of the 4S shop was a motorcycle fan, so he bought a VFR1200F sports motorcycle with a DCT transmission from a parallel trader.

Once, the clutch of his motorcycle broke and he was sent to a 4S shop for repair, and Ling Shizhe happened to be present when he came to see his friend that day, so he was fortunate enough to witness its internal structure.

Taking out a pen and paper, Ling Shizhe drew the internal structure of Honda's motorcycle DCT with the limited memory of his previous life, although he couldn't remember the details, and it was even more impossible to know what the parameters were, but he thought that as long as he drew the general structure, with the original Bombardier's excellent team of mechanical engineers, it should not be difficult to copy this DCT system, after all, they have been invading / prostituting on motorcycles for decades and have extremely rich experience.

The DCT structure of the motorcycle was slowly completed under the pen of Ling Shizhe, and he showed it to Navali before he finished drawing.

Like most dual-clutch transmissions, Honda's dual-clutch transmission uses two sets of clutches, dividing 1-6 gears into odd gears (1, 3, 5) and even gears (2, 4, 6), each with a clutch waiting for gear switching, and the two clutches run synchronously to make the shift smoother and achieve uninterrupted power delivery.

The DCT combines the direct drive transmission of manual transmission with the convenience of automatic transmission. Because one of the two clutches is responsible for an odd number of gears and the other for an even number of gears, there is less lag between gear changes.

The motorcycle DCT provides three driving modes, namely D or S mode under AT fully automatic and manual mode of MT, D is for general driving use, and S is a sportier performance, and the driving computer will change the gear according to the speed of the vehicle in these two modes. It is also possible to choose the MT manual mode, after which the driver can control the gear changes himself with the +/- button on the left-hand control stick.

"Navali, this is a sketch of the dual-clutch automatic transmission I envisioned for a motorcycle, and with your expertise, is it reasonable for me to draw it?"

Navali looked at the last sketch, then looked at the previous sketch, then closed his eyes and thought for a while, then opened his eyes and said: "Boss, I don't know how you came up with it, but I still want to say that this is a genius design, although he is just a sketch, there are no specific parameters, and I don't know how the specific details should be, but its basic structure, you have drawn it very clearly, the rest is our work, I will solve him."

But there are two problems that I have in my relationship now, the first problem is that this DCT system needs to use a special computer, and the computer must be good and reliable enough, and it must be small enough, and I hope that the company can help me solve this critical problem.

The second problem is that this DCT structure is very complex and requires an ultra-high-precision machining machine, I don't know if there is such a machine on the market, if not, we can't make it. ”

Ling Shizhe nodded to Alison, who said to Navali: "I can answer your first question, as early as 69 years, our company developed the world's first driving computer (ECU), due to the limitations of computer technology at that time, although we made it, but his performance is limited, and the volume is also very large, so we did not put it on the market, just as the company's technical reserves."

Over the years, we have not stopped researching it, and so far, the ECU has basically met the requirements for commercial use, and this should not be a problem for you. ”

The ECU is actually an "electronic control unit" (electronic control unit), which is composed of three parts: input circuit, microcomputer and output circuit.

The input circuit receives the input signal from sensors and other devices, filters and amplifies the signal, and converts it to an input level of a certain volt. The signal sent from the sensor to the ECU input circuit is both analog and digital, and the analog-to-digital converter in the input circuit can convert the analog signal to a digital signal and then pass it to the microcomputer.

The microcomputer performs computational processing on the pre-processed signal and sends the processing data to the output circuit. The output circuit amplifies the power of the digital information, and some of them are converted to analog signals, so that they can drive the controlled regulating servo element to work.

The core component of ECU is CPU, the CPU used by Ling Shizhe in the early days was the earliest ARM processor, this processor uses a 10-micron process and the performance is too low, so the crisis motherboard of the driving computer must integrate many CPUs for parallel computing, which is why the volume of the original driving computer is as big as a small coffee table.

Moreover, as a CPU for the driving computer, ARM is not the best choice, ARM emphasizes low power consumption, low cost and high cost performance, so it is most suitable for use in mobile terminals.

In addition, the trip computer system is installed in the car, so it must adapt to the harshest operating environment, and at the same time must have high performance, high reliability, high durability and flexible embedded applications.

In addition to being embedded, the ARM processor is also difficult to meet the requirements of the driving computer in other aspects.

Later, after the successful development of the blade server with worm gear helix structure based on the RMP processor of the ARM core as the core, Ling Shizhe designed the processor based on the SPARC structure - SRC-1.

In fact, as a large server and supercomputing, the SRC-1 processor is more suitable, it uses the SPARC structure, this processor is a RISC microprocessor developed by Sun and TI company, the most prominent feature is its scalability, unlike ARM, the SRC processor emphasizes high reliability and high performance, so it is very suitable for mainframes, giant machines, and even supercomputers, as well as aerospace fields, Even the industrial control computer and CNC machine tool system that Ambrera is developing uses the CPU of the SRC processor.

With the continuous progress of computer technology over the years, the size of the ECU is getting smaller and smaller, and the performance is getting stronger and stronger, and now it basically meets the requirements of commercial applications.

Since the acquisition of Bombardier, Alison has been planning to promote ECUs, with Bombardier's motorcycles as the primary target.

Bombardier is good at manufacturing large-displacement motorcycle water-cooled engines (BMW's engines are famous for in-line, in fact, Bombardier is not inferior to it in this regard) is far from being comparable to the current BMW, but the disadvantage of this engine is that it is too fuel-intensive, and in today's oil crisis, large-displacement motorcycles are obviously not well received by the market.

If the motorcycle is equipped with an on-board computer, and at the same time installed with multiple sensors to control the amount of fuel injection, the proportion of mixture, and monitor the condition of the engine, mileage, tire pressure, transmission and power and other data, then such a motorcycle still needs to worry about whether there will be no market?

Moreover, the engine power of motorcycles is much smaller than that of cars, and the structure is relatively simple, which is a suitable platform for ECUs that have just reached commercial application (cars, especially high-end cars, are still a bit inadequate).

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