After half a month of hard work, a big guy about one and a half meters long, one meter wide and seventy centimeters high was brought out by the Zhengxin R&D team. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

It is a V-arranged twelve-cylinder engine body with a block diameter of 148mm and a piston stroke of 140mm. Although it is a trial product, Zhengxin's sophisticated sand mold and fine turning technology still make this big guy who uses ordinary cast iron look very powerful.

This is the first experimental prototype made by Li Fanyu after making repeated adjustments to the power speed and torque values given by the military, and gathering the strength of the R&D team.

If nothing else, the fourth-generation tank engine is based on this, and it is constantly refined and finally formed.

The engine has not been treated with anti-corrosion treatment, and it has a faint sheen under the incandescent lamp. Under the seemingly rough appearance, it embodies the delicacy of the R&D center's painstaking efforts in the past half month.

Looking at this big man, everyone's faces were a little happy and a little worried. With such a big engine, it is the first time that Zhengxin has done it. Although the database simulated the parameters of the engine, everyone still had no bottom in their hearts.

"Alright, don't waste time in a daze. Get on the stage and test!" Li Fanyu waved his hand and pulled everyone out of the trance.

Hearing Li Fanyu's order, everyone immediately used a crane and a forklift to move the engine to the engine laboratory on the first floor of the R&D center.

This guy is too heavy, just the main body of the engine, not counting the weight of one thousand two hundred kilograms. According to the requirements of the final assembly, the fourth-generation tank engine is equipped with three sets of cooling systems, each cylinder block is equipped with an independent water-cooled circulation system and lubrication system, plus a spare set of oil supply system to prevent shock damage......

Li Fanyu estimated that the engine would have to weigh two tons.

But that's a matter of afterthought, after the main body design is not a problem, it is completely possible to use the material and process to reduce the weight appropriately.

It's too far to think about that now,

The engine was too heavy, and it took more than half an hour to fix the engine on the bench and connect all the test instruments.

"Brother Fan, start?"

Wang Yu adjusted the test software and raised his head to ask.

Under the gaze of the engineers of the seventh department and the team, Li Fanyu nodded lightly, "Let's start when you're ready!"

"Okay!" Wang Yu ordered and pressed the start switch.

"Sudden !!"

With a muffled sound, the huge engine was running.

The bore is 148mm and the piston stroke is 140mm, which is more than three times the size of the TDI or D4D!

In the cylinders, which are arranged in a V-shape at an angle of 90 degrees, the pistons are coordinated by the crankshaft as if they were twelve flopping sledgehammers, giving out a breathtaking vibration.

The huge vibration passed through the bench and was clearly transmitted to the ground.

The floor of the laboratory has been strengthened with aluminium panels on top of a thick layer of cement. But the huge vibration stirred up the fine dust on the aluminum alloy plate!

"Shhh

Li Fanyu gasped.

Circumstance...... Doesn't seem right!

The shock was too great!

Where is the vibration that the engine should emit, this is almost the same as the vibration of a small stamping machine tool in the working state!

It wasn't just Li Fanyu who saw the problem, Wang Yu and the engineers at the end of the test bench were all pale at this time.

Dog leash!

It was in the frustration of everyone that the vibration of the engine became bigger and bigger, and it took less than five minutes for the engine to make a strange noise.

Li Fanyu came back from his trance, quickly opened the maintenance specialty, and scanned the engine that was vibrating on the bench and was about to jump.

This look!

His heart was half cold!

"Stop! Turn off the oil system!"

As he shouted, Wang Yu quickly cut off the oil supply.

Diesel engines do not operate in a way that compresses oil and gas like gasoline and then ignites it with a spark plug. Instead, the diesel is compressed directly by a piston at high pressure, and then naturally detonated in the cylinder.

So as soon as the oil supply system was cut off, the engine stopped.

As soon as the vibration stopped, everyone stepped forward to observe the state of the engine.

"Senior brother, there is a crack on the second row of cylinders of the engine!"

To make sure his observations were accurate, the man who spoke stepped forward and touched them. But the moment he touched the engine, he heard a "Z!" sound.

His fingers, which were wearing white gloves, instantly turned yellow. Immediately, a burning smell came out.

"I'm rubbing, it's so hot?!" he quickly lifted his hand off the engine block.

"Hey," Li Fanyu sighed, shook his head and said: "The design is unqualified, and it can't help but be a second-row cylinder block." By now the inside of the engine should have been scrapped. The cylinder head was already about to be punctured by the piston, and if it had been running for two more minutes, we would have been sprayed with a room full of diesel fuel. ”

Wang Yu frowned, turned on the cooling system on the bench, and aimed the nozzle at the engine.

The milky white coolant slowly sprayed on the engine, and under the action of high temperature, bursts of white steam were steamed.

After a short while, the temperature dropped. The people who had been waiting for a long time hurriedly moved and quickly removed the engine cylinder head.

Is it a problem with the size of the crankshaft? This Nima, I'm afraid that if I don't stop just now, the piston will fly out!"

Li Fanyu shook his head.

Just now, from the perspective of overhaul expertise, I saw that the twelve cylinders were all red and yellow - that represented serious damage!

This test engine, codenamed A-01, was repeatedly verified by the team and assembled in the most rigorous way, so it is impossible for such an accident to happen.

Even if it is a trial machine for testing, the cast iron used is the same cast iron material used on the ZGX888 self-priming engine. Although it has not undergone anti-corrosion and anti-rust treatment, this prototype is also made in strict accordance with the process of mass production engines.

It took less than ten minutes to get to this shape, and it must not be because of a defect in the material.

Then there seems to be only one truth......

That's right

The design flaws of the hemp eggs!

Li Fanyu exhaled a long breath, although he was very aggrieved in his heart, but looking at a group of engineers who were looking at him, he smiled lightly.

"It's okay brothers, this is just the first test of the first prototype. Failure is the mother of success, don't be discouraged!"

In fact, according to the normal R&D process, such failures are as common as burping and farting. Which engine is not the result of hundreds or thousands of failures, and is always modified once more than at this time?

Zhengxin's test machine, which only took 15 days to build, has successfully run for at least more than eight minutes, which is already a good result.

In fact, the engineers also knew in their hearts that the chances of success in this first test were almost negligible.

It's just that Zhengxin's research and development has been almost all over once with the support of Li Fanyu's strong data. Now in the face of such a blow that can't successfully run for ten minutes, everyone can't accept it for a while.

"It's okay brothers, get moving! collect the data just now and put it into the database for analysis. Dismantle the engine and find out the cause of the failure! Brothers, this is the engine of our fourth-generation main battle tank, and this is the heart of the Land White Tiger! This is also an extremely arduous battle and a tough battle! But I believe that we will step on the defeat, constantly improve ourselves, and constantly surpass ourselves until the day we complete it! Brothers, we have not completely failed!

Listening to Li Fanyu's sonorous encouragement, everyone's eyes slowly became firm. After shouting to cheer himself up, he quickly threw himself into the summary work.

Li Fanyu looked at the cheered up crowd and felt a little relieved.

But it was at this time that there was a shock in his mind!

A mechanical, cold voice rang out abruptly in his head;

"Note: The current test user's R&D points have reached the upgrade standard. ”

Li Fanyu closed his eyes slightly, feeling the echo in his mind, and the corners of his mouth slowly hooked.

Finally, it's here!