If you want to squeeze power, you must have an advanced turbocharger, and in this regard, Qin Zhenhua is already very good at it.

After all, with the experience of the last time in Germany, Qin Zhenhua already knew the design code of the other party's turbocharger, even if he didn't memorize it all, at least the process was already clear, and now he can use imported CNC machine tools to make the same turbocharger.

Although the structure of one's own engine is different from that of the other party, it is still possible to learn from these aspects, and the specific shape of the turbocharger impeller is obtained after repeated research.

"We already have a certain degree of mastery in turbocharger technology, and we believe we can make it." Qin Zhenhua said: "Moreover, this advanced turbocharger, as well as the ability to further tap the potential, can make our engine finally reach 1500 horsepower power needs." ”

The turbocharger is responsible for blowing in more air, and on the other hand, it is necessary to inject more fuel, better atomization, so that the fuel is fully combusted, so as to generate more power.

Wang Erzhu replaced it with another slide, and when this slide was released, many people frowned.

"What is this?" Zhang Baolin, as a well-known engine expert, did not come out what this thing was, the name on it introduced the fuel system, but Zhang Baolin was not familiar with this thing at all, so to speak, he had never heard of it.

High-pressure common rail injection system.

"If we want to achieve more power, we need higher injection pressure, as the engine experts in the room know, but it wasn't easy to do that with our existing fuel system." Qin Zhenhua began to explain to everyone.

The traditional diesel engine is driven by the engine to drive a fuel pump, this fuel pump, is set up a cam or plunger to squeeze the fuel, a device to supply a fuel injector, so, if it is a V12 structure, the fuel pump, there must be 12 oil circuits, each go their own.

In the work of diesel engine, because of the high-speed operation, the time of each diesel injection process of each cylinder is only a few thousandths of a second, so whether it is an oil pump, oil pipe, or fuel injector, the pressure inside changes with time and position.

Due to the compressibility of diesel and the pressure fluctuation of diesel in the high-pressure oil pipe, the actual fuel injection state is quite different from the plunger fuel supply law specified by the fuel injection pump.

If it is not the fuel delivered at the highest pressure, then, the number of fuel injected by the injector is not the highest, and this is not the worst, the most annoying situation is that the pressure fluctuation in the oil pipe may rise again after the main injection, and the pressure in the high-pressure oil pipe rises again to reach the pressure of the needle valve of the fuel injector, so that the fuel injector that has been closed is re-injected, which is the secondary fuel injection phenomenon, at this time, the engine is not needed, and it cannot be completely burned at all.

The resulting problem of excessive exhaust emissions, of course, is not something that tank designers have to consider, but this is obviously counterproductive to improving the power of the engine, and because the residual pressure in the high-pressure oil pipe will change after each injection cycle, it will cause unstable injection, especially in the low-speed area, so it leads to the unstable operation of the diesel engine.

If it were just the current engine, it would be tolerable, but if you simply increase the pressure of the fuel injection pump, the problem will get worse.

Therefore, if you want to solve it, you have to use new technical means, which is high-pressure common rail!

"This common rail, that is, all the fuel injectors, use the same pipeline, and the oil pressure in this pipeline is stable, which is generated by a special high-pressure oil pump. In this way, the pressure in our high-pressure oil pipe has nothing to do with the engine speed, which greatly reduces the defects of traditional diesel engines. Well, to be exact, we're going to increase the current fuel pressure to about three times the current fuel pressure, so we can inject more fuel and completely squeeze the potential of our engines. ”

When Qin Zhenhua explained this, the professionals could already understand, and Zhang Baolin began to ask again: "So, how to control the fuel injection on the side of the fuel injector?" ”

Originally, it was mechanical, and it was controlled by machinery, but now, if you do this, the oil pressure over there will never change, and all the existing technology will not work.

"The electronic system, to be exact, a small computer, is used to control how much fuel is injected into the injector and when it is injected, so as to achieve the optimal effect."

"You're really putting a satellite." When he heard this, Zhang Baolin already agreed with Niu Shilong's words, Niu Shilong is a layman, but he is still accurate in looking at people, this kid doesn't care about his own industrial base at all, and even ignores the level of scientific and technological development, he can brag as much as he wants.

At present, many domestic scientific and technological personnel do not use computers, and if the tank engine needs to use a computer, and automatically control the injection of fuel, it is absolutely a fool's dream.

Needless to say, in China, even in the West, I don't know if there is such a system.

In Qin Zhenhua's mouth, the performance of this system is good, but if you want to say that it is developed from your own hands, this is definitely engaging in ***, exaggerated style, and a yield of tens of thousands of catties per mu, do you know what our current technical level is?

For a while, many people in the conference room started to discuss, and everyone's opinion was almost the same as Zhang Baolin's.

What's more, the few people who know Qin Zhenhua's origin are all lamenting how he made the same mistake as his father, so ambitious, so happy, and not considering his actual level.

"That's right, from the current point of view, our fuel injection system is a bit advanced, but if you want to achieve an advanced tank power system, it is absolutely impossible not to surpass, we want to achieve 1200 horsepower in the current form, or even 1500 horsepower power level, that is more advanced than the German tank diesel engine, if there is no such technology, can we achieve the indicators we want? It's not about putting satellites, it's ..."

Qin Zhenhua paused and said: "This is building a Long March rocket, and with a rocket, you can really launch a satellite!" ”

To reach the world's advanced level, do you still want to take the conventional route? Without advanced concepts, how can there be advanced products? Now, you don't even dare to think about it?