The morning passed like this, and the representatives of the other factories hardly had a chance to speak, only occasionally raised some sporadic questions, and at the same time, after the morning meeting, it was almost certain that the three tanks proposed by the first machine factory were obviously very interested in the superiors, and if nothing else, the front three tank phalanxes would be fixed in this way.

At noon, the big guys entered the cafeteria together, even if they were eating, the topic of discussion was still on the equipment.

"Zhu Lao, you must be very busy during this time." Qin Zhenhua sat next to Zhu Lao, eating and communicating with Zhu Lao.

"yes." Zhu Lao said: "We are watching your second-generation tank project go smoothly, and our third-generation tank will naturally have to work hard." It's just that I can't catch up with this parade anyway, a pity. ”

If your own third-generation tank is successfully developed, there is no doubt that it will definitely be the third-generation tank that will take the lead, but now, unfortunately, the progress will definitely not be able to catch up.

can only watch Qin Zhenhua's performance.

"Yes, our first machine factory is also looking forward to giving us the drawings of the third-generation tank as soon as possible, so that we can quickly manufacture it." Qin Zhenhua said.

In this regard, there is not much resistance in the first machine factory, although it is the tank design to carry out the design, but the final production and manufacturing is absolutely to be carried out in the first machine factory, looking at the whole country, only a machine factory can undertake this glorious and arduous task.

"You can't rush this." Zhu Lao said: "We are still in a hurry, by the way, how is the progress of the research and development of the 1,200 horsepower diesel engine of your factory?" ”

The third-generation tank also has the contribution of a machine factory, in addition to production, it is a tank engine.

Since it is going to be a third-generation tank, the weight will definitely be further increased, after all, at the time of design, various parameters have been determined, and this will be a fifty-ton tank.

For a tank of this level, the engine also needs 1,200 horsepower, to say the least, in fact, the engine of 1,500 horsepower is the best.

Hearing Zhu Lao's question, Qin Zhenhua also became serious: "Our engine branch has been engaged in research, and if we want to achieve a greater increase in horsepower, we need a turbocharger with higher efficiency and a fuel injection system with higher efficiency. ”

Since we plan to improve the power of the engine, we must do a good job in various pre-research work, with the maturity of the scheme of the large cylinder heart, the heat dissipation problem of the tank after the power increase has no longer become a problem, but in other aspects, it still needs to be tirelessly studied by our own side.

To put it simply, to improve the power, it is necessary to drum in more air, more fuel injection, more air drum, relying on the supercharger of the engine, the performance of the supercharger has reached a limit, this is not the use of what processing technology can be improved, there must be a new design ideas.

On the other hand, it is the injection system, the higher the pressure of the fuel injection, the more fuel can be injected, and the better the atomization, and the high-pressure fuel pump is not so easy.

"So, do you have a plan?" Zhu Lao asked, if there is no suitable idea now, once it is dragged down by the engine, it may lead to the discontinuation of the entire third-generation tank project.

After all, the engine is the heart, and without an advanced engine, everything is absolutely in vain.

"We are trying, but if we want to continue to explore the potential, we believe that the application of high-pressure common rail system is a route, and now we are carrying out pre-research on the corresponding work."

"Common rail system?" Zhu Lao immediately frowned: "Are you sure?" ”

Until now, the technology of diesel engine has been using ordinary plunger pumps to pressurize the diesel, and then enter the fuel injector through a single high-pressure oil pipe.

The disadvantage of this is that when the oil pump is moving, the pressure of the diesel actually changes with the operation of the engine, which leads to the imperfect operation of some cylinders.

Moreover, the faster the engine speed, the greater the pressure of this oil pump, so the older the diesel engine, the larger the throttle, the more powerful.

The common rail technology can solve this problem, the common rail is to store the high-pressure fuel output by the high-pressure oil pump into a pipe close to the fuel injector, and then, which injector needs, it will be provided to which injector, so that the generation of fuel injection pressure and the injection process are completely separated from each other. The oil pressure in the common rail tube is used to ensure that each injector has the same fuel injection pressure, and the injection pressure at this time is not affected by the engine speed, so as to ensure the stable and efficient operation of the engine.

This technology, in fact, has been proposed a few years ago, and many companies are doing it, but until now, there is no qualified product coming out, after all, its fuel switch, has become a computer to control, which will have a lot of technical difficulties waiting to be overcome.

However, if this problem is solved, it is conceivable that our own engine will definitely be more advanced.

"It's hard to say, we can only do it 100 percent hard." Qin Zhenhua said: "At present, we are racking our brains, maybe it is no problem to increase to 1,200 horsepower, but to achieve a performance improvement of 1,500 horsepower, it is estimated that this technology can only be used." ”

After talking about the problem of the engine, Qin Zhenhua continued: "In fact, compared with the engine, the difficulty of the transmission system is greater, and we do not have this level of gearbox now, so I suggest that we can introduce it from abroad, for example, the LSG3000 transmission system of the German ZF company is good, let's introduce it, and then figure it out ourselves, and then imitate it." ”

Advanced tanks, must have an advanced transmission system, want to use the previous fixed shaft, even the planetary gearbox way, are too backward, with a tall hydraulic transmission system, to achieve steering wheel operation, that is really called a comfortable.

The tank project exported by a machine factory has begun to adopt this method, but it is matched with a weak engine, and the stronger the power, the stronger the transmission system must be.

I am afraid that it will be protracted to study by myself, after all, our domestic best is still surveying and mapping.

"Yes, we're also considering, by the way, Zhenhua, you have a better relationship with the Germans, do you want to leave this matter to you?" Zhu Lao asked.

Qin Zhenhua hurriedly shook his head: "Forget it, this is your tank design office, don't want me to mix blindly, I don't have time." ”

As he spoke, Qin Zhenhua glanced over there, and that Liu Tiande was talking to a few leaders, not knowing what he was talking about.