Somewhere in South China, 850462 Military Research Institute. Pen ~ fun ~ pavilion www.biquge.info

Lu Mingdezai listened carefully to the progress reported by the seven places, Rao had great expectations for Zhengxin's research and development capabilities, but he was still surprised that the main engine design was finalized in such a quick time.

"So, it only took them sixteen days to complete the main design?"

Wang Xiang on the other side of the phone was silent for a moment, and then said word by word: "No! Mr. Lu." To be precise, it took fifteen days to complete the initial testing of the A-01, but the A-01 proved to be a failure during the test. They...... It only took one night to complete the improved model A-02, "

Sky!

It took them only 16 days to solve the problem that took half a year to solve! And the first 15 days seemed to be in the fault-tolerant stage, and it only took one night to make a key breakthrough!

How horrible this is!

"Parameters!How about parameters?!" Lu Mingde was shocked in his heart and asked urgently.

Wang Xiang has also been in contact with Lu Mingde in other projects. In his impression, this chief, who was engaged in high-level military scientific research, had always been calm and sensitive.

He had never seen Lu Mingde so excited.

"I will send you the specific project process immediately, and I will briefly report to you the parameters. The A-02 was initially measured at 1,350 hp at 2,750 rpm and ...... AT 2700 RPM, 4100 NM OUTPUT!"

Hearing this set of data, Lu Mingde's mouth opened slightly......

Like a dehydrated fish, he exhaled a few deep breaths, "Oil... What about fuel consumption?"

"Each cylinder is 2.2 liters, with a total displacement of 23.6 liters! But according to Li Fanyu, this data is not accurate. ”

Hearing this, Lu Mingde hurriedly asked nervously: "What do you say? Is there any flaw in A-02 that has not been solved?"

"That's not it, he said that the A-02 is just laying the groundwork, and there are a lot of performance-enhancing designs that have not been used for the A-02. He is now working on the design of the upgraded version of the B-01 based on the A-02. It is said that the oil tank system should be simplified, and the sub-cylinder oil supply system used on the A-02 should be changed to a common oil tank direct injection, which will further reduce the volume of the engine oil supply system and improve the reliability and easy maintenance of the oil supply system. In addition, a cooling system integrated into the engine body and a number of changes have been made to improve the engine material. It is said that after these changes, the performance will be improved again. ”

“……”

Lu Deming held the phone and didn't know how to reply. He felt like he was about to have a heart attack......

Amagi, Zhengxin R&D Center.

Li Fanyu has already led the team to easily finalize the design of B-01!

After the A-02 test passed the parameters were obtained, this product felt that the performance was simply too weak, and the maximum power was only a little more than 1,000 kilowatts, and this Nima was not much different from the active main battle tank 99-G!

At present, the main battle tanks in service abroad generally have a power of more than 1,200 kilowatts and a horsepower of more than 1,500 horses. This standard can be said to basically represent the highest level of military high-horsepower diesel engines in service, such as Russia's T-90 and Germany's Leopard 2, which are basically this parameter.

However, these tanks are all active tanks.

What kind of project are you working on now?

China's next-generation main battle tank engine!

Wouldn't it be a shame if you couldn't surpass these standards with your own heart!?

It was with this mindset that the B-01 was born.

Different from the feasibility of the experimental engine of the A-02 and the determination of the general design direction, the B-01 can be said to go straight to the finalization! In the case of the B-01, Li Fanyu directly integrated the material of the X super aluminum alloy into the design process. Of course, it is according to the standard of the weakened version of X aluminum alloy that can be produced by itself.

In response to the requirements of two sets of one positive and one standby oil supply system, three sets of cooling systems, and two sets of lubrication systems given by the General Assembly and 850462 Research Institute, Li Fanyu directly rejected them.

The strength of X aluminum alloy gave him absolute confidence!

Even if you exchange the production method yourself, the strength of X aluminum alloy can throw off any kind of metal on the market now. To make an engine from such a material, it is also necessary to consider the problem of minor damage to the engine of the tank during combat?

Take the weakened version of No. 4 X alloy that he intends to use on B-01 as an example, with a tensile strength of 824Mpa, a yield strength of 753Mpa, a density of 3.1g/cm, and a Mohs hardness of 9.8......

As long as the engine part is not directly penetrated by artillery fire, do you still need to consider the problem of vibration damage?

Non-existent!

With such awesome physical properties, if the B-01 engine under the armor is damaged, then there is only one possibility - it was directly penetrated by an armor-piercing bullet and happened to hit the engine.

However, given the tail layout of the tank, the probability of this happening is equivalent to a sniper hitting the enemy's pupil with a sniper rifle at a distance of one and a half kilometers, which is a small probability event. But if this happens, I'm afraid that no matter how many backup systems there are, it won't work. It is better to reduce the weight of the engine assembly and improve the mobility of the tank.

So after thinking and discussing with Wang Yu, he decided to adopt a more daring design.

With this in mind, he defined the fuel supply system as a common direct-injection tank that was integrated into the engine in a modular way. The two most important of this are that it reduces weight and makes it easier to quickly replace parts and logistical maintenance in wartime.

As for the cooling system, in fact, the heat dissipation performance of the X aluminum alloy itself is excellent.

If it is normal, only an air cooling system needs to be provided to ensure the heat dissipation of the engine under high power. But modern tanks have to take into account a concealment, that is, to avoid detection by thermal observation systems on the air and on the ground. Air-cooled driving will expel a lot of heat, increasing the probability of being detected by the heat.

Therefore, Li Fanyu used an unprecedented but certainly latecomer design on the B-01 - this product directly designed four spiral pipes hovering around the outer layer of the cylinder directly in the interlayer of each cylinder block of the engine. The engine crankshaft is used as the transmission and a circulating pump is integrated that can control the flow rate with the engine speed.

These two designs constitute what he calls the "internal circulation cooling system"!

If such a design is made of ordinary materials, it must be an act of death. Because digging four grooves on the most powerful cylinder block must greatly reduce the strength of the cylinder block. But this situation obviously does not exist for Alloy X!

But these are only the design of the attachment part.

What really makes the B-01 shine infinitely brighter is the transformation of the main engine body!

In the design of the A-02, the cylinder block is made of high-strength cast iron sleeves, while the pistons are made of high-strength steel. Such a design is mainly based on the coefficient of friction and durability.

But on the body of the B-01, both of these places were replaced with X aluminum alloy.

For this design, Wang Yu made a solemn protest at that time, because the coefficient of friction between aluminum and aluminum is very high. According to common sense, such a design will definitely greatly reduce the piston workmanship efficiency and increase the pressure and wear of the crankshaft.

But Li Fanyu "insisted on going his own way" and followed his own design.

The reason for insisting is that he is quite aware of the characteristics of X aluminum alloy!

The hardness of aluminum alloy from No. 1 to No. 5 is different, and the properties are also very different. In his vision, the main body and cylinder of the B-02 are made of No. 4 X aluminum alloy, and the important parts such as the piston and crankshaft are, of course, the No. 5 with the greatest strength and the most excellent characteristics!

The strength of the weakened version of No. 4 X aluminum alloy is 9.8, and the strength of the weakened version of No. 5 aluminum alloy is 10.8. It seems that there is only one difference in coefficients, but Li Fanyu knows that No. 5 X aluminum alloy has changed in essence from No. 4!

He had exchanged No. 5 aluminum alloy in the supermaterials laboratory before, and when he found that thing, it was difficult to say that it was a pure metal.

Its color has changed to dark green, and the material is more like a mineral like diamond. However, if you distinguish carefully, you can still see that the texture of No. 5 super aluminum alloy is still metal. In this form, its surface smoothness can even be equal to that of diamonds.

With such a difference in properties and such a surface smoothness, how can there be a problem with the coefficient of friction of aluminum!?