The two examples Chen Guo gave were too powerful, and the pirates in the live broadcast room were speechless for a moment: they have brought out specific examples and specific models, so how can they compete?

"Of course, compared with the pull-line throttle, electronic throttle is indeed easier to do cruising speed. As for why electronic throttle is easier to do cruising speed, this has to be discussed from the working principle of the electric injection vehicle... including cars and motorcycles...," Chen Guo continued: "The working principle of the electric injection vehicle that uses pull-line throttle is as follows: When we step on the accelerator, the cable pulls the throttle and gives a throttle opening. The sensor installed on the throttle determines how much power the car owner wants based on the throttle opening and the opening speed and other information, which is to form a power request. This power request is transmitted to the ECU. At this time, the ECU will process this power request based on the current vehicle speed, slope, gear information, gear ratio, and engine load and other data, and determines how much fuel injection and intake amount the electronic fuel injection system provides to the engine.

So in a pull-line throttle car, the path to power request and power completion is as follows: throttle-throttle-ECU-specific execution strategy;

The working principle of the electronic throttle injection vehicle using electronic throttle is as follows: When we press the accelerator pedal, the accelerator pedal forms a power request signal based on the speed and depth of the accelerator pedal. At this time, the ECU will combine the current speed, slope, gear information, current gear ratio information, engine load and other series of data to execute corresponding instructions for your power request, and determine the amount of oil sprayed to the engine, the opening degree of the throttle, and the intake amount.

So in a car that uses electronic throttle, the path to power request and power completion is as follows: throttle-ECU-specific execution strategy…”

As soon as Chen Guo finished speaking, the live broadcast room exploded again...

"Damn it! What did I hear in this live room?"

"Are all the students of Xijiao University so evil?"

"I was completed with a popular science..."

"Thank you, I was scared..."

"When will it take such a deep culture to do live broadcasts?"

"I would like to ask, is this a top student?"

…………

It’s not a big deal that everyone is so surprised. I’m really used to watching all kinds of poses on various live broadcast platforms. Everyone subconsciously thinks that those who play live broadcasts are all people with cultural level that is the case. Of course, there are also many high-end talents such as university professors, but they mainly focus on singing, dancing and game live broadcasts. Especially Chen Guo, who has been playing wood carving before, and suddenly switched to the academic master mode. Many people are very uncomfortable. It was also at this time that many talents suddenly reacted: I almost forgot that this "craftsman" is a top student who can be admitted to the top domestic universities like Xi’an Jiaotong University...

Looking at the live broadcast room, Chen Guo felt a little proud - they are all young, who doesn’t have a little vanity?

Restraining this pride in his heart, Chen Guo continued: "So, based on this basic workflow, we can also successfully deduce the working mode of the cruise control system of the vehicle using electronic throttle:

First, the cruise control system first tells the ECU system that I will drive at a certain speed, such as 100 kilometers per hour. In this way, the ECU system regards the "next car to drive at a speed of 100 kilometers per hour" as a sword of the square, monitoring the vehicle's engine load information, slope information, speed information and other data at a speed of dozens or even hundreds of times per second. Then, based on this information, the fuel injection volume and throttle opening are continuously adjusted so that the speed of the car will always be maintained at 100 kilometers per hour. In this process, it is basically a transmission of electrical signals.

This is still a manual gear. If it is an automatic gear, it also involves the coordinated calibration problem between the engine ECU and the transmission TCU. For example, under this speed, slope, and load, should the gearbox maintain the gear position or downshift or upshift. If it is necessary to downshift or upshift, it should be raised or downshifted several gears. At the same time, how to achieve the most fuel-efficient while maintaining this speed... The system logic and calibration here are more complicated, so let's not talk about it."

After taking a breath, Chen Guo continued: "After talking about the basic working principle of cruising speed for vehicles using electronic throttle, let's talk about the working principle of cruising speed for vehicles using wire throttle.

Because the pull-line throttle is different from the electronic throttle in structure, the working mode of the cruise control system of this structure is that it is the same first. The cruise control system told the ECU that I will maintain the next... Well, it is still a speed of 100 kilometers per hour, not fast or slow, you remember it for me.

Because the pull-line throttle is controlled by the vehicle driver himself, that is, the vehicle's ECU computer cannot control the throttle or the throttle, so it cannot actively control the throttle opening of the vehicle. This is how it is done at this time?

Simple!

The method is to install a small stepper motor outside the throttle. This stepper motor can control the opening and opening speed of the throttle in a very precise way, while the ECU controls the opening and opening speed of the throttle by controlling the stepper motor. At this time, the ECU tells the motor based on the current speed, engine load status, slope, fuel injection status and other information, saying that you can open the throttle for me a larger one, or that you can open the throttle for me a smaller one, so as to achieve cruise control.

So, when I said this, you should be able to understand that for BMW R1200 GS, R1200 RT, Harley-Dina-above car series, and Ducati's many motorcycles that use electronic injection and electronic throttle, whether they have the cruise control function depends entirely on whether the manufacturer is conscientious and the manufacturer's market positioning of this car, because from the hardware system, these models already have the basis for realizing the cruise control function. If the original car does not carry the cruise control, such as Harley's fat boy, in theory, it can re-implement the cruise control function by installing the original cruise control system and activating the computer's cruise control function module.

Also let me explain it to you that this is also the most commonly used method in cars. For example, the old Toyota Camry and the old Buick GL8, the low-end models do not have the cruise control function, but the cruise control function that was originally only available for high-end models can be reactivated by adding the original high-end cruise control switch and reactivateing the ECU computer-related functional modules.

For motorcycles like GW250 that use pull-line throttle, if the cruise control function is needed, first, the throttle needs to be modified and the control motor is installed. Secondly, there may be no functional module in the original car's ECU system, so the corresponding functional module may also need to be re-written...
Chapter completed!