Rebirth of the Auto Giant

Zhai Liangpeng was originally an only child. In the past, when he was bullied outside, he had no brothers or sisters to help him. Every time he came home from being bullied, his parents told him to endure it and not to argue with them. They said he would cry faster next time so that they could

I won't hit you, I will just hit you. Who would be cruel to a crying person?

Later, every time I was bullied, I would cry as soon as the other person raised his hand.

Now that he sees so many brothers in the company standing up for him, Zhai Liangpeng has a stronger sense of honor in his heart. He is determined to write down the programming well so that the company's new products can be put into production as soon as possible.

After that, the relationship between Zhai Liangpeng and Zhou Yingqing continued to heat up. Every Sunday, the two would watch movies and go shopping together.

Two months later, the two began to confirm their relationship. The next day after Zhai Liangpeng's mother heard the news, she asked someone to go to a matchmaker and get the certificate.

Tang Dynasty engine test workshop.

Every engine coming off the production line here must be tested here, and it can only leave the factory if there are no problems.

Today, Director Xing Lichong of the company's engine technology research and development center, five people from the computer department, and Wang Shi gathered around a high-pressure common rail system diesel engine newly developed by Tang Dynasty Power with red paint sprayed all over the body.

The high-pressure common rail system diesel engine is similar to the traditional diesel engine. The oil pressure of the fuel system is not affected by the engine speed, so that the common rail cavity can be maintained within a balanced pressure. The electronically controlled injection is controlled by the computer (ECU).

The oiler can accurately inject fuel according to the working conditions of the engine.

"Mr. Wang, everything is ready." Five Zhai Liangpeng checked the lines. Next to them were some testing equipment, fuel pressure sensors, fluid flow buffers and pressure limiters. The lines were connected to the computer module next to them.

There is a stop dial in front of the engine, which does not contain the engine's oil pressure, oil temperature, speed, etc.

"Start it up and take a look. You are going to check various data to see if it meets the design requirements." Wang Shi said.

Weng Xinyuan and the other two looked at the testing equipment.

Wang Shi spent a lot of money to get these equipment from Sovlevsky. Note that they are used to detect various data on exhaust gas emissions.

"Dudu" Zhai Liangpeng turned the starter key on the stop dial, and the engine started beeping.

"The sound is so small and much quieter. It doesn't sound like a diesel car engine at all, but more like a gasoline engine on a car." Xing Lizhong sighed.

This time, the design of the high-voltage common rail system was completely completed by Wang Shi, and the programming was completely written by the newly established computer technology department. Xing Lichong's R&D department was only responsible for the design and manufacturing of the airframe.

I don’t know anything about this new thing about the system.

"This is the latest product developed by our company after the traditional camshaft oil pump. It is called the diesel high-pressure common rail system. The high-pressure common rail system and the traditional camshaft oil pump engine have the characteristics of low noise, low fuel consumption, low emissions and low pollution.

, in the future when environmental protection requirements are getting higher and higher, diesel engine technology will be the next step." Wang Shi said.

Then, he briefly introduced the working principle of the high-pressure common rail system: "The working process of the high-pressure common rail low-pressure fuel pump." When Wang Shi said this, he stopped and pointed to the fuel tank and said: "This low-pressure fuel pump is different from the traditional one. The traditional one is to install

On the high pressure of the camshaft

, is called a transmission pump, while the low-pressure oil pump of the high-pressure common rail system is not installed in the fuel tank, but is electric. The computer controls the delivery of diesel fuel that has passed through the pre-filter to the radial high-pressure oil pump according to the engine's operating conditions." Wang Shi finished.

, pointing to the fact that the engine does not drive the high-pressure oil pump.

"Our company's high-pressure oil pump uses a three-cylinder radial piston pump driven by a diesel engine to generate a pressure of up to 135mpa." Wang Shi said, pointing to the high-pressure oil pump that was painted red.

To generate pressure up to 135mpa, the requirements for high pressure are very high.

The traditional camshaft high-pressure pump only has a pressure of 60-70mpa, and the high-pressure common rail system requires a pressure of 135mpa. However, Wang Shi knows that designing these things is a bit troublesome in manufacturing, and many companies outside are unable to do this.

But now Wang Shi has the Yun-10 aircraft manufacturing team at hand, which has a lot of precision processing equipment, especially the blades for turbofan engine manufacturing. There is no problem at all in building a 150mpa high-pressure oil pump.

As for the lifespan, this material Wang Shi was designed based on mature technical materials forty years later, so there is no problem.

Together with Turbofan 8, this information has been assigned the highest level of confidentiality and has been protected by the state.

After briefly talking about the structure of the high-pressure oil pump, Wang Shi began to introduce the working principle of the high-pressure common rail system. "The high-pressure oil pump pressurizes the fuel and sends it to the high-pressure oil rail (accumulator). The pressure in the high-pressure oil rail is controlled by the electronic control unit according to

Rail pressure sensor measures rail pressure and needs

The fuel in the high-pressure fuel rail passes through the high-pressure fuel pipe. According to the operating status of the machine, the electronic control unit determines the appropriate fuel injection timing. During the fuel injection duration, the fuel is injected into the cylinder by an electronic fuel injector controlled by electro-hydraulics."

As Wang Shi talked, he also pointed out the parts he introduced.

"The common rail system is different from the previous camshaft-driven diesel injection system. The common rail diesel injection system completely separates the generation of injection pressure and the injection process from each other. The pressure of the high-pressure oil pump reaches 150mpa, and our current Tang Dynasty Power

The pressure of the high-pressure oil pump is only 60-70, there is a big difference between the two."

After explaining the principle, Wang Shi looked at Zhai Liangpeng and asked: "Has the data been released?"

"Everything came out, and the data met the design requirements."

"Then print it out." Wang Shi said.

After getting the test data, Wang Shi waited until the various sensors developed by Professor Yang's R&D team from Xi'an University of Electronic Science and Technology came over, and then began to install the vehicle for testing.

Since this is the latest product, only Wang Shi himself knows about it.

In a secret factory shed, there are chassis, frames, wheels, cabs, etc., as well as a brand-new high-pressure common rail system engine. Now Wang Shi wants to install it into a heavy truck and start testing.

Next to me are people from the service department.

After hoisting the engine and completing a series of work on the cab, Wang Shi began to install different sensors in various positions.

"This is called the throttle position sensor. It is installed on the driver's foot pedal in the cab and transmits the throttle position to the computer. The computer controls the opening of the solenoid valve on the electronically controlled injector to achieve the amount of fuel supply for acceleration.

In the future, the acceleration of the high-pressure common rail system will be easier, as if there is no resistance." Wang Shi said while installing it.

Then while talking, install the camshaft position sensor, throttle position sensor, intake air pressure sensor, oil pressure sensor, oil temperature sensor, coolant temperature sensor, atmospheric pressure sensor, intake air temperature sensor, exhaust back pressure sensor, etc.

All arrangements are completed.

After everything was prepared, a Tang Dynasty heavy truck equipped with a more advanced high-pressure common rail system diesel engine appeared at the factory's testing site.

The muffler specially made for the new product makes the engine less noisy. Compared with the traditional engine next to it, the effect is more obvious, attracting the attention of many employees.

"When will our factory produce a car and put it on a truck?" When the employees heard the sound, their first guess was the car engine.

"No, heavy trucks can also use car engines. Can they be pulled up? Is it true?"