Chapter 582 Buggy at 660 Kilometers per Hour

The second day after Mu Yang returned to City H, he came to the Vehicle Engineering Research Institute, the Advanced High Speed ​​Rail Laboratory.

Xinghai Group's advanced high-speed train is named "XHRH-500" (Xinghai Group Railway High-speed Railways High-speed, with a battalion speed of 500 kilometers). At present, there are only room temperature models. If it is used in a cold-resistant area, some materials need to use low-temperature-resistant high-toughness materials. Otherwise, brittle fracture is prone to occur due to low temperature (strictly speaking, for low-temperature materials, below minus 46 degrees Celsius).

The maximum test speed can reach 650 kilometers per hour, but the designed operating speed is 500 kilometers per hour.

This XHRH-500 refers to the design of new high-speed rail vehicles without changing the track, including vehicle design optimization, traction system upgrades, signaling systems, etc.

Vehicle design optimization is mainly to reduce the weight of the vehicle body, optimize the shape of the vehicle body, reduce wind resistance, etc., in order to improve the acceleration performance of the vehicle.

It's not that the faster the acceleration, the better, it depends on people's tolerance and comfort.

In this regard, Xinghai Group has designed a new body shape.

In terms of body weight, the overall weight is slightly lighter than the current CER2-300 body, but the structural strength has not decreased, but has been improved a lot.

For example, the CRH2-300 EMU with a speed of 300 kilometers per hour adopts a large-section hollow aluminum alloy car body, and the thinnest part is only 1.5 mm. The weight of each car is about 7 tons, which is currently the lightest EMU of its kind in the world.

But its load capacity is actually between 5 tons and 15 tons. If it is too light, it will float up if the speed is fast.

The XHRH-500 uses the same aluminum alloy material, but Xinghai Group's aluminum alloy has stronger performance and a more compact structure, so the weight of the vehicle is lighter.

In terms of car body shape, the length and width of the XHRH-500 are not much different from the conventional EMU, except that the chassis is shorter and the overall height is also shorter.

The front of the car is longer and sharper, and there are more aerodynamic air holes to balance the car body and prevent the car body from floating due to excessive speed.

But at a speed of less than 200 per hour, they can provide buoyancy and make the car start faster.

In terms of traction system upgrades, the traction system of high-speed rail vehicles should be equipped with efficient motors and control systems to provide greater traction, and can quickly respond to the driver's instructions to achieve rapid acceleration and deceleration.

The motor and control system are the core technologies of the vehicle.

The traction motors of CRH2 EMUs rely on imports, such as Mitsubishi, Hitachi and other brands.

Xinghai Group's electric motor technology is excellent, and has been supplied to its own car brands. Although it is different from EMU motors, there are many technologies and processes that are interlinked.

The high-level high-speed rail technology purchased by Muyang includes these core technologies, so the developed traction motor is much more powerful than its international counterparts.

For other key components that are highly dependent on imports, such as "high-speed rail bearings", Xinghai Group has already broken through a few years ago.

Muyang will also pay attention to the reliability and maintenance convenience of the traction system.

For example, the use of modular design makes it easier to repair and replace parts;

At the same time, an intelligent monitoring and maintenance system is introduced to detect vehicle operating status in a timely manner, and provide maintenance suggestions and predictive maintenance services, thereby minimizing failures and prolonging the service life of vehicles.

Software has always been Xinghai Group's strength, so Mu Yang is not worried about this aspect.

Mu Yang came to the laboratory and listened to the project leader's report.

"Chairman, the length of our test track is limited, and we have to slow down at the corner. After all the tests are completed, we need to test on the real track. This requires the company's support, and we don't have the resources for this."

Mu Yang nodded and said: "Well, you don't have to worry about this real track test. Get all the preparations ready first, and then report to Mr. Zhou. Which lines do you want to test on?"

"The line from H City to Ningcheng or to Shencheng is the best, which is convenient for testing."

"Okay, what experiments have you conducted so far?" Mu Yang asked again.

"Aerodynamic tests, braking tests, noise tests, track tests and electrical tests, and now impact tests are required to test the vehicle's response and stability when encountering a sudden impact, so as to ensure that the vehicle has better impact resistance. .”

The person in charge of the project spoke and asked his subordinates to bring the test report.

Mu Yang took the test report and read it carefully.

He knew the test conditions and standards, and asked questions while watching.

According to the noise test data, under the same speed and load conditions, the noise decibel is 30% lower than that of international advanced vehicles.

The speed of 500 kilometers per hour is not much different from the domestic CHR2 train speed of 280 kilometers per hour. The main source of noise is wind noise.

The XHRH-500 body is smoother, such as the outer glass window, which is almost smooth with the body.

Noise control is very important. If it exceeds the feelings of passengers, the experience will be very poor. No one can stand the buzzing in the ears.

XHRH-500 is much more advanced than CHR2 in terms of intelligence, such as road condition monitoring. If there are stones or other obstacles on the track 200 meters ahead, the train will automatically slow down quickly.

If there is a natural disaster such as a landslide ahead, it will be prompted in advance and the speed of the car will be reduced. Of course, this must be connected to the star network and allowed by monitoring.

Like dirt or dust on the track, there is high-pressure gas blowing on the track surface in front of the wheel, which is equivalent to maintaining the track, so the more you run, the cleaner it will be.

The entire vehicle is monitored, such as wheel defects, insufficient air pressure, derailment of the vehicle body, changes in wheel pressure, etc., are monitored in real time, and problems occur, just like luxury cars.

The section of the train traveled is also monitored in real time. If there is a problem with the track, it will be recorded and then fed back to the general system. This function is also convenient for railway workers to maintain the track and quickly know where there is a problem.

After reading the test report, Mu Yang expressed his satisfaction: "Yes, continue the test according to the plan. We must be steady and not rush. We have worked hard on this project for three and a half years, and the time is not too short."

"Okay, chairman, I will strengthen supervision and implement it."

Next, Mu Yang and the person in charge left the laboratory and came to the test workshop, where a 16-section developed XHRH-500 train was parked on the track.

The company has developed a total of 16 trains, 8 moving and 8 dragged.

This is a silver-white car body, like a rocket head. In addition to the train number, there is also the logo of Xinghai Group on the car body.

Mu Yang climbed into the compartment and saw that there were many counterweights parked in each compartment, which was equivalent to being full of passengers and luggage.

Out of the long and narrow workshop is the test track, which will not be tested.

Mu Yang came to the cab at the front of the car. This was the first time he entered the cab, and he didn't have that opportunity before.

The interior is somewhat similar to the CHR2 train, but it is more intelligent and has many automatic functions. For example, when the train enters the tunnel, it automatically adjusts the speed and brightness of the lights to adapt to the light and road conditions of the tunnel.

There are also some intelligent processing. For example, when a train breaks down, the system will automatically detect and alarm, and at the same time provide corresponding emergency measures for the driver. These measures include automatic train stop, emergency braking, etc.

In order to facilitate operation, some physical buttons are necessary.

Mu Yang sat on the driver's seat and felt the comfort and support of the seat, which made him quickly adapt to the driver's position.

He looked up at the guidance screen in front of him. When it started normally, it displayed the train's speed, location, and track information.

Now that the engine is turned off, all the wheels are locked to avoid accidents caused by misoperation.

After Mu Yang investigated for a while, he left the carriage with the person in charge, and gave him some instructions before leaving.

A few days later, July 10th.

After repeated tests, the XHRH-500 train declared that the test passed perfectly.

The successful test of this train indicates that the technical strength of Xinghai Group in the field of high-speed trains has reached the top international level. If it can be popularized, it will make an important contribution to the development of domestic high-speed rail and to enhance the technical level of global high-speed rail.

Of course, this is not a one-time pass. The car body has been developed for a long time, and the light test has been carried out for nearly a year.

It has been three and a half years since the project was established. It can be said that it is a very time-consuming project for Xinghai Group.

On July 12, Xinghai Group announced that the XHRH-500 advanced train test was successful.

Xinghai Group stated that the successful test of the XHRH-500 train is an important milestone in the development history of Huaguo high-speed trains.

The company will continue to promote the innovation and development of high-speed railway technology, and make more contributions to the realization of the leading position in domestic high-speed railway.

At the same time, Xinghai Group also plans to start commercial operations in the next few years and expand the international market so that more people can enjoy the convenience and comfort brought by high-speed trains.

In addition, relevant parameters are announced on the official website.

【XHRH-500 parameters】

[8 knots, 480 kilometers per hour = 4M4T (4 moving and 4 dragging)

8 knots at 500/550 kilometers per hour = 6M2T

16 knots, 480 kilometers per hour = 8M8T

Car type: first class car, second class car, dining car

Maximum test speed: 651km/h (8 knots, 6M2T)

Gauge: 1435 mm (standard rail)

Adapt to platform height: 1250 mm

Traction power: 7200 kW (2400KW higher than CHR2)

Body type: large hollow profile aluminum alloy

Head vehicle length: 27500 mm (1500mm longer than CHR2)

Intermediate vehicle length: 25000 mm

Vehicle width: 3380 mm

Vehicle height: 3500 mm (1500mm lower than CHR2)

Traction Converter:Xinghai Group

Traction motor: Xinghai Group (450kW) x16 Starting acceleration (m/s2): 0.330

Emergency braking distance (m) (braking initial speed 200km/h): ≤600

(Braking initial speed 500km/h): ≤2000

...]

In terms of cost, since the key parts are self-developed instead of imported, even if a better car body and intelligent system are used, if it is mass-produced, the actual cost will not be much different from CRH2.

Netizens who have been paying attention to Xinghai Group's information were shocked when they saw the announcement, and then it spread to the outside world, and many media reported it, which soon became a hot news.

"Is this true? The Xinghai Group is about to shock the world again, it's numb!"

"It should not be groundless. The Xinghai Group built a test track for research and development a long time ago. It was unexpectedly successful, and the efficiency was so fast."

"If this is true, and operational, there is no advantage to flying, airlines should panic."

"Recently, I have been numb by the reports of the Xinghuan space station, and now there is a new invention. Alas, the Xinghai Group does not engage in the news industry, but the global news industry serves it."

"The mileage from BJ South to Shencheng will be shortened from 5 hours to 3 hours, and the 13 hours from H City to Rongcheng East will be shortened to six or seven hours. One hour."

"Judging from the published information, the key components and motors are independently developed. This has always been the temperament of the Xinghai Group. In terms of key technologies, they disdain to use other people's."

"I look forward to being able to take such a high-end train in the future and enjoy a fast, comfortable and safe travel experience."

Most of them are praises, but there are also many doubts and concerns, mainly in terms of safety.

After all, the speed is so fast, if there is an accident, the whole car will be killed.

However, judging from the emergency braking distance announced by Xinghai Group, the braking distance of CHR2-300 at an initial speed of 200 kilometers is within 1800 meters, but that of XHRH-500 is within 600 meters, indicating that the braking effect is very good.

And when the speed reaches 500 kilometers per hour, it can be within 2000 meters, which is a bit unbelievable.

Some people say that the Xinghai Group may use reverse rotation and aerodynamics to decelerate. Otherwise, it is impossible for the light brake to have such an efficient braking effect.

If this is the case, the safety performance of Xinghai Group's trains can be guaranteed.

In short, this new invention has aroused widespread concern and heated discussions.

People are full of expectations and curiosity about the future prospects and application scenarios of this high-speed train.

In any case, once this innovation is put into use, it will have a major impact and impetus on the transportation field in Huaguo and even the world.

However, after hearing the news about Xinghai Group, the competing industries felt as if the sky had fallen.

An airline company held a high-level meeting on this matter, and several shareholders panicked after learning about it.

"Xinghai Group's move has a great impact on us."

"It will have no impact on civil aviation in a short period of time. The new model of Xinghai Group will not be put into operation so quickly. Even if it is put into operation, there will be a growth process. Of course, when it is popularized, it will have a great impact on civil aviation. Maybe civil aviation will be destroyed in a few years. It's going to fall."

"Before the introduction of high-speed rail and bullet trains, civil aviation had such concerns, but as people's income increases, more and more people are flying."

"We can't stop the general trend. We just hope that the fare of the new model will not be too cheap. If it is twice the price of ordinary second-class seats, it will not have a great impact on our civil aviation."

In addition to this civil aviation company, other civil aviation companies also held a meeting to discuss the impact of the new train of the Xinghai Group after they learned about it, and discussed how to adjust the future situation.

Two days later, relevant railway departments and the local ZF came to Xinghai Group to inspect the test situation of the XHRH-500 train, and the local TV station filmed it.

Mu Yang and Zhou Chen did not go to meet, but sent Wang Hai, the vice president of technology, to deal with it.

During the investigation, the personnel of the relevant departments expressed their surprise and satisfaction, and the local ZF tried their best to promote the project of Xinghai Group.

"Xinghai Group is the world's number one in various fields, has made a great contribution to the development of science and technology in our country, and has also promoted the development of science and technology worldwide. We will report this project as soon as possible. Good inventions must vigorously promote applications, not Let it bury it in a corner.

The success of this project also shows the strength and innovation ability of our country's science and technology, and we are proud of it.

It is hoped that Xinghai Group can continue to maintain the spirit of innovation and make more contributions to the development of science and technology in my country. "

A representative of the relevant railway department said.

Wang Hai was very happy to hear this, and he knew it was an affirmation of his company's work.

After the inspection, Wang Hai reported to Mu Yang and Zhou Chen.

Mu Yang and Zhou Chen were very happy to hear the high praise from relevant departments and the local government.

"If the efficiency is fast, they will arrange a formal track test run." Wang Hai said.

"Well, it's better to test the train earlier. If this train is going to be in operation, I don't know when it will be." Mu Yang said calmly, "Do your best and obey the destiny."

Everyone is looking forward to the success of the official track test of the XHRH-500 train. Mu Yang is not worried about this, but is worried that the operation may be hindered by human factors.

a few days later,

Relevant departments are working very efficiently, and feedback information to Xinghai Group can carry out the formal orbital test at the end of July, and send some time slots for selection.

Wang Hai reported the feedback information to Mu Yang and Zhou Chen.

Mu Yang was silent for a while, and said: "You can arrange this. Go ask the project team, they will be more clear. After you are sure, let me know. I will watch it when the time comes."

"OK."

Wang Hai withdrew from the chairman's office, discussed with the project team leader, and finally determined the time slot at 3 o'clock in the afternoon on July 22.

After confirmation, report to the relevant department.

The Xinghai Group's test track is not connected to the official track, and can only be towed on the official track by special vehicles.

On July 20, a total of 8 trains of XHRH-500 stopped at H Chengdong Station, and will test the speed to Shanghai Hongqiao Station.

Normal pace is between 46 minutes and 55 minutes, at camp speed, with no stops in between.

There is a total of 159km between the two stations. If the speed is 300 kilometers per hour, the theoretical time for the two stations is 31.8 minutes. However, due to the time it takes for the train to accelerate from 0-300km/h and pass through some speed limit points, the actual travel speed will inevitably be faster than the theoretical speed. Much lower.

Xinghai Group and H City ZF announced the test run at 3 o'clock in the afternoon on July 22 at the same time.

Time passed quickly, and it was 2:30 p.m. on the day of the test drive.

At this time, the XHRH-500 train had already entered the track of a platform. On the platform, Mu Yang, Xinghai Group executives and local ZF leaders were chatting, and they had already wandered around in the car.

He will not get in the car to experience it today. There are several scientific researchers and the driver who actually get in the car.

There is tracking and shooting equipment on the train, and the whole process is tracked, and today there is a star network tracking. The Xinghai Group has set up a monitoring center in an office at the East Station of H City, where you can watch the train running in real time.

No one can guarantee that there will be no accidents in today's test drive, but some media reporters are not afraid of death in order to expose, hoping to get on the car to follow, but Xinghai Group disagrees.

Without consent, some media reporters had no choice but to find some train passing points to observe.

Yes, there are hundreds of thousands of people waiting for the train along the way.

The Xinghai Group and the local government can't stop it. Moreover, the public observation point is far away from the route, so there will be no security risks.

At three o'clock in the afternoon, the test drive started on time.

The train started slowly. Xinghai Group executives and local ZF leaders watched the train quickly disappear into the distance on the platform, feeling a little nervous and looking forward to it.

In the car, the scientific research personnel and the driver are very focused, watching the changes of various data and responding at any time.

"Let's go to the monitoring center to watch."

Xinghai Group executives and local ZF leaders, led by the train station leaders, came to the monitoring center.

Only five minutes had passed, and the speed of the train had increased to 300 kilometers.

"This speed is very fast!"

"Accelerate normally, it should be on a straight road."

Everyone was discussing that they could see the real-time speed of the train and the scenery along the way, but the nearby scenery along the way looked a little blurry, and it was only when the scenery was very far away that they could see clearly.

Of course, there are two other screens, which are real-time images from Xingwang. You can clearly see where the train is going and the approximate speed.

They had just chatted a few words, and the speed had reached 350 kilometers per hour.

After another ten seconds, 450 kilometers.

"Wow, 455!"

"480!"

"It's reached 500."

After reaching 500 kilometers per hour, it continued to rise.

Today's test is not carried out at a speed of 500 kilometers per hour, but can be carried out at a maximum test speed of 650 kilometers.

Of course, this depends on the road conditions.

After the speed reached 550 kilometers per hour, the train was running at high speed, and the wind howled, but the whole compartment was extremely quiet, only the faint sound from the instrument.

At the observation point where the train passed, the people raised their mobile phones to record this historic moment.

However, the speed of the train was too fast, and the observation point was not very good. The audience only saw a series of shadows passing by with a whistling sound, and there was no time to record it.

"It's too fast. I was chatting just now, but I didn't expect to fly over all at once. It sucks. After waiting for an hour, I saw a shadow."

These viewers feel a little regretful, and feel that the observation point they are looking for is too poor.

For some viewers, the observation points they found are very good. The observable route is two or three kilometers long enough. Even if the speed reaches 500 kilometers per hour, they can observe for more than ten seconds.

monitoring room,

Everyone saw that the speed of the train reached 660 kilometers per hour, reaching the highest point of the test speed.

However, it only lasted for three seconds before reducing the speed to about 580 kilometers per hour. In some not-so-good areas, it dropped to about 350 kilometers per hour.

About 23 minutes, the front reported that the train arrived at Shanghai Hongqiao Station.

After staying for a few minutes, the train returned.

This time with experience, the speed is even faster, and the return time is only 21 minutes and 30 seconds.

Of course, this is the test speed, and the speed of many routes has soared to more than 600 kilometers per hour. In actual operation, you can’t play like this.

The top executives of Xinghai Group and the local ZF leaders had been waiting for a few minutes, and when they saw the train arrive and come to a complete stop, they couldn't help applauding.

"Congratulations, Mr. Mu!"

Local ZF leaders stepped forward to congratulate Mu Yang.

When they were in the monitoring room just now, they could see that the various data were stable and there were no abnormalities.

"The success of this project is inseparable from the hard work of the researchers and drivers, as well as the support of the local government." Mu Yang smiled slightly, "We still have a lot of work to do, but I believe we will be able to do better .”

At this historic moment, Mu Yang was full of pride and emotion, and so were other Xinghai Group executives and staff.