Military industrial hegemony

Chapter 591 Preliminary Test
After the vehicle started, after a while, some people began to organize to persuade the onlookers to leave, and asked them to go back and pack up and get ready to go to work.Now only the main cadres such as staff experts and Jiang Chen are left.The real test is only now starting, because this car not only involves commercial secrets, but also involves the future military field, so it still needs to be kept secret.However, there are many people on the scene, so it is beneficial to disperse unnecessary idlers to carry out the confidentiality work.

First of all, of course, it is not to drive this car directly, but to send it to a comprehensive roller test stand for this test drive.This comprehensive roller-type test bench is also called roller-type comprehensive test bench. It is a testing equipment that integrates vehicle braking performance testing and vehicle speedometer calibration. The braking performance testing part consists of motor, reducer, and braking force. It is composed of detection device (force measuring lever, load cell, reducer, box, etc.), roller, lifter, hydraulic lifting system and axle load sensor.When measuring the wheel braking force, place the left and right wheels between two sets of rollers, and the motor drives the rollers to rotate through the reducer, thereby driving the wheels to rotate.When the vehicle brakes, the tire surface of the wheel will give a reaction moment to the surface of the roller, and through the roller and the reducer shaft, the reducer box and the force-measuring lever will rotate around the axis of the roller, and the force will be transmitted to the load cell to measure The braking force of the wheels.

The principle of vehicle speed measurement on the automobile comprehensive test bench is actually very simple, that is, the driving wheel of the experimental vehicle falls on the roller.The car starts, and the driving wheels rotate on the rollers, simulating the actual conditions of driving on the road.The drum rotates under the drive of the drive wheel, and the speed sensor connected to it also rotates accordingly.Because when the drum rotates with the wheel, there is basically no slippage between the tire and the drum, so the linear speed of the drum is equal to the actual vehicle speed, and the speed sensor converts the speed value of the drum into a pulse of corresponding frequency and inputs it to the secondary instrument.

"Are you ready?" Zhou Gong said to the driver in the car on the comprehensive roller test stand.

"Okay." The driver made an OK gesture outward.

"Okay." Zhou Gong turned his head to look at everyone and said: "Come on, all units pay attention, the first test of the vehicle driving and performance test is counting down now, five, four, three, two, one, start."

As the driver in the vehicle put into gear, released it hard, and stepped on it lightly, the vehicle started to move slowly.The running sound of the gasoline engine is louder than that of the diesel engine. This is because the gasoline engine is ignited by high-voltage electricity, while the diesel engine is ignited by the engine, so the compression ratio of the diesel engine is higher than that of the gasoline engine, so the exhaust pressure is relatively high. The sound of the engine is mainly reduced by the muffler, so it is normal for the diesel engine to be louder.Of course, in the ears of Jiang Chen and the others, this voice seemed more powerful.It's like an angry beast, howling heartily on the test bench at the moment.

Jiang Chen asked Zhou Gong who was next to him, "How about it, all the data now."

"It's still normal at the moment, and we're continuing to increase the speed." Zhou Gong slapped Jiang Chen and continued to work.

As for Jiang Chen, he didn't bother, but stood there watching quietly.Although he knows a little bit, in front of these experts, except for his advanced consciousness, he knows a little bit about others, so it's better not to speak.And he also knew that what these researchers hated and feared the most was encountering a boss who pretended to understand, or who knew a little bit, and loved to interfere with work.This makes them disgusted, but they have to spend time explaining all this carefully.And Jiang Chen, who came out of this research position, can naturally understand this, saying that at this moment, he instinctively shut up.

This work seemed very boring, and everyone was listening to the friction sound of the vehicle running against the rollers below and the running sound of the engine inside the vehicle.Although Jiang Chen and the others saw it as noise, to these researchers it was just data.Every noise has the situation or data it reflects, and these researchers are constantly monitoring and observing the disease to record these data, while the experts are constantly analyzing the data obtained from this vehicle to obtain They are useful data information for research or correction.

It was around ten o'clock, and Jiang Chen asked Liang Qi to contact the restaurant to make a special breakfast, which finally arrived.Because it was summer, Jiang Chen didn't ask them to make greasy things, a big pot of mung bean soup, a few baskets of buns, and some refreshing side dishes.As a former R&D personnel, Jiang Chen knows that basically all R&D personnel don't pay much attention to these details. Basically, if there is a stutter, it's fine, and it's good to be simple, but it's so complicated, but I'm not used to it.

Sure enough, seeing these experts and researchers had a big appetite, they laughed and chatted while eating.As for Jiang Chen, he didn't care, he brought [-] mung bean soup and a steamed stuffed bun, and squatted there to eat.Seeing this, Academician Zhang shouted at Jiang Chen, "Xiao Jiang, come here."

"What's the matter, Mr. Zhang." Jiang Chen walked over with his job bowl and smiled.

Academician Zhang motioned Jiang Chen to sit down, then smiled and said, "What are you doing hiding there, just eat with us here, there are still vegetables here, can you be full with just that mung bean soup?"

"Hehe, I'm eating over there too." Jiang Chen said with a smile.

Academician Tu looked up at Jiang Chen and said, "Why, I'm not happy to eat with us old guys."

"How could it be? It's too late for me to be happy." Jiang Chen said hastily.

"Then eat here with peace of mind." Wang Gong said to Jiang Chen: "Come on, eat more, we can't eat much. Look at you, you are afraid that we will not eat enough, so you get so much for us, hurry up It’s a waste if you don’t let it go, it’s all the blood and sweat of the peasants.”

"Hehe, okay, okay, I'll eat, I'll eat." Jiang Chen took a bun from Old Chief Wang and said with a smile, "Old Wang, how did our morning test go?"

"Hahahaha, I thought you could hold on for a while, but I didn't expect to ask so soon." Wang Gong joked with a smile.

"Hehe, I don't care about it." Jiang Chen said with some embarrassment.

"Very good." Wang Gong said with a smile: "There is no problem with the overall power. It has hit [-] in the morning. We are slowly approaching its limit and see where its limit is."

Zhou Gong heard the words, then shook his head and said: "Old Wang, I'm afraid this should be done slowly. After the [-] in the morning, the car vibrated a lot. If it is improved, I am worried that it will cause serious damage to the car body. Big damage. We still have many items that have not been tested. I suggest that we can test other items successfully first, and then we will come back and test this. At that time, even the whole car will fall apart. , it doesn't matter anymore."

Wang Gong and several experts nodded their heads and agreed.And Jiang Chen also expressed his support, first easy and then difficult, one by one, with the smallest cost to do the biggest thing, this is the best.

　Kao, buddy, I live in Xi’an, and the power plant is not far from where I live. Last night, it was full of flames. Today, the electricity was cut off for a day. I have a high temperature warning for these few days. It’s really hot. It hurts that I am so fast at typing.

　　
　
(End of this chapter)