Chapter 554: The Consciousness of the Old Military Industry
"Our engine..." After hearing Qin Zhenhua's question, Zhang Baolin had helplessness in his eyes, a bitter smile on his face, and he shook his head.
"What's wrong?"
"It's exactly the same as what you said!" Zhang Baolin said.
Domestic engines currently need to move towards the threshold of one thousand horsepower. The coal provincial diesel engine factory took the lead in developing a 537-kilowatt engine, which is the current 730-hp diesel engine. It was quite exciting and decided to first look towards a higher goal.
breakthrough.
Just after the meeting, within a year, they tinkered with the new engine and put it on the bench. After testing, the power was met.
706 kilowatts is simply a benchmark for diesel engines in China, but with it, countless nightmares came.
Any engine can be declared successful by dragging it onto the pedestal and obtaining experimental data. It must withstand strict long-term testing and must have high enough stability.
Just like a car manufacturer in later generations, he always claimed that he was developing and boasting about how advanced the engine technology and how high the thermal efficiency of his engine were. He probably believed it and fooled a lot of fans.
, for many years, I have been boasting that I have never actually loaded the car. And just as they were boasting, other unknown car factories have installed the engines they produce on cars and put them on the market.
.
It is actually very simple to make data in the laboratory, but it must be reliable to use it! Small problems with any component may have catastrophic consequences.
When they first developed the 730 horsepower engine, they encountered this situation and quickly assembled it. However, after installing it, there were constant failures of all sizes. It took more than ten years to finally make all the changes.
All the faults have been resolved.
Now, the new engine has begun to be tested, and various faults have emerged again.
"Cylinder head exploded?" Qin Zhenhua asked.
"Yes, the cylinder head exploded, this failure has troubled us for nearly two years. We have tried various solutions, materials, processes, structures, and processing, but no matter how you try, the cylinder head will always explode.
.” Zhang Baolin's voice was very low as he said.
At the beginning, they encountered this problem, the cylinder head exploded! After repeated research and various methods, they finally solved the problem of the cylinder head exploded.
However, as the power continues to increase, the problem of cylinder head explosion has emerged again.
How to solve it?
Zhang Baolin no longer has confidence, because Qin Zhenhua said at the beginning that this problem will inevitably arise. Using the original structure, the distance between the cylinder centers is too small to achieve sufficient heat dissipation effect. All of them are gathered on the cylinder head, which is formed.
The final phenomenon of the cylinder head.
How to solve it?
Thickening and strengthening strength are useless, it can only be to increase the distance between the cylinder core.
If the cylinder center distance is increased, isn’t that the plan of the one-machine factory?
Don’t look back if you don’t hit the wall. Now you hit the wall. What should they do? Keep going, looking forward to a miracle suddenly. Are you solving the problem?
Even if it can be solved, so what? Then it will end when it reaches 1,000 horsepower, and the power of the tank engine is just a watershed, and they still need to continue to improve.
The potential of the existing 12150L engine has been fully explored. It is extremely difficult to improve it. Even if the model in front of you is successful, it will no longer be able to continue in the future.
"If you persist on the wrong path, the further you go, the further you can only be from success." Qin Zhenhua said: "Mr. Zhang, I sincerely invite you. How about it? Come to our first-machine factory.
We are really in a hurry to get a manpower now.”
Wu Ruihua and others are also skilled and experienced, but everyone has too many tasks at hand. Wu Ruihua has become the factory director again. Now, he is a busy man and runs everywhere.
If Zhang Baolin comes here, he can be the person in charge of the new engine here.
Of course, Zhang Baolin would never agree with his proposal.
"Zhenhua, if you say this again, you will drive me away." Zhang Baolin said.
Qin Zhenhua had to shut up, and then thought of something: "Your R&D capabilities are actually very strong. Since you can get such a large horsepower on the bench, it means that the supercharged intercooler is still well developed.
”
How to squeeze the potential of the engine? This is a technical job.
The first thing to use is the supercharger. As long as it is in the same cylinder, it is enough to blow more air in. There has always been a so-called master who has been repairing cars for many years. He said that the supercharged engine is not reliable and naturally aspirated.
The rudder surface is stable. In fact, it is just two knives. During World War II, supercharger technology was widely used. It was mainly used on aircraft at that time. The higher the flight, the thinner the air, and the power of the engine would come down.
Therefore, you can only use a supercharger to bulge more air in order to ensure that the power is not lost.
In order to reach higher heights, sometimes even in series, a secondary supercharger is used. Until the jet engine is used, it is finally not so complicated.
Then, transplanting it to the ground is natural. Many vehicles have already started to use it. First, it is a diesel engine, which bulges more air and sprays more fuel to increase power.
However, this also has its limits. After the air is pressurized, it will heat up. When the temperature is high, the density will decrease. Therefore, if the turbocharger reaches a certain level, it will never be able to continue to increase.
What should I do at this time? I just want to find a way to reduce the temperature of the air. When the air temperature is low, more air can be blown in.
That is, a cooling device is added to the air pipe of this turbocharger to form a supercharged and intercooled structure.
For diesel engines, naturally aspirated is the first generation, turbocharged is the second generation, and supercharged intercooling is the third generation. If you want to develop a high-power diesel engine, supercharged intercooling is an inevitable trend.
.
Although they were able to achieve this power, although it was unstable, it always showed that the supercharged intercooling area was considered successful in research and development.
Our side is currently studying various technical data for single cylinders and has not yet involved these fields.
"If you need it, we can provide relevant technology." Zhang Baolin said: "After all, this is for our new generation of tanks, and all our industry technicians should work together."
Qin Zhenhua was stunned. This is the enlightenment of an old military industry, it is high!