Fang Dongping smiled and nodded: "That's good, no matter what you do, it's always right to be careful, this time with the super carbon steel you invented as the foundation, our engine samples will definitely be famous all over the world!"

Niu Xiaoqiang said modestly: "The main thing is that Master's design plan is very strong, and with the technology you provide, we can succeed." ”

The engine designed by Fang Dongping this time is indeed extraordinary, and its performance is more powerful than that of domestic military products.

If you want to judge the performance of an engine, you mainly look at the following aspects:

The first is power. Power refers to horsepower, which is the power output of the engine at different speeds and under different oil conditions. Generally speaking, with the same fuel consumption, the more horsepower the engine is. This is a hard indicator, and any engine will try to get as close to this as possible at the beginning of its design.

The next step is to look at the maximum torque. The concept of torque is not very popular in China, and only professionals understand it.

The unit of torque is Nm, which refers to the torsional moment of the engine. For vehicles with the same gear ratio, the higher the torque value, the more powerful the power.

This concept seems to be the same as power, but there is a difference. Power is based on fuel consumption, while torque is more about the power effect that the engine can display. It's not easy to combine the two, and you don't have to think about it without the support of excellent design technology and materials.

Then look at the number of cylinders of the engine. Roughly speaking, the number and size of cylinders are directly related to the power of the engine.

For example, tractors, many tractor heads are horizontal bars, and the horsepower is only a dozen horses, no matter how to improve the performance, because it is only a single cylinder, the horsepower is also very limited.

Tank engines are different, the number of engine blocks is generally twelve, plus the large blocks, so the motivation is extremely strong, and can support a tank weighing tens of tons at a speed of tens of kilometers per hour, which a tractor cannot do in any case.

And then there's the compression ratio. The higher the compression ratio, the better the combustion work of the engine, and the more powerful the engine is.

At present, the best diesel engine produced in China in this regard is the tank engine, and the compression ratio has reached the degree of ten to one.

This type of diesel engine is actually from Fang Dongping's hand, without him, it is impossible to design this engine in China.

What is the compression ratio of the diesel engine that Fang Dongping is designing now? The answer is 15 to 1! From this point alone, this diesel engine has far surpassed the previous old model, and there is certainly no rival in China.

As for the international situation, because neither of them knows much about the level of diesel engines abroad, they are not very favorable.

According to Fang Dongping's estimates, the performance parameters of this engine sample currently being produced can definitely reach the level of the international second-rate high, and may even be higher.

After all, foreign countries have been tinkering in the field of engines for so many years, whether it is design ability or manufacturing ability, its technology accumulation is extremely strong, even Fang Dongping, who is at the top level in China, there is a certain gap compared with others.

There is no fear of a gap, as long as you have the courage and perseverance to catch up. Fang Dongping is most satisfied with accepting Niu Xiaoqiang, a genius apprentice, and he firmly believes that Niu Xiaoqiang can go further and climb higher than himself in the field of engines.

Fang Dongping even had the illusion that Niu Xiaoqiang was the savior sent by God to save him. Without Niu Xiaoqiang's invention of super carbon steel as a confidence, he would not have been able to turn the drawings into reality. Take the engine he designed this time as an example, if ordinary materials are used, it is estimated that this engine is very likely to burst the cylinder, which is a big problem.

When the engine is running, the interior needs to withstand the test of high temperature and high pressure, once the material can not withstand high temperature and high pressure, it will definitely burst the cylinder, which means that the engine is scrapped.

The master and apprentice chatted for more than half an hour, both full of hope for the future. Just when they were chatting happily, Zhou Kai waved his hand on the operating table: "Xiaoqiang, the molten steel has reached the standard of baking, you are ready for casting and cooling." ”

Niu Xiaoqiang agreed, and walked to the mold with Fang Dongping. Zhou Kai repeatedly confirmed with the two of them several times, until he was sure that the two were really ready, and then he operated the steelmaking furnace to carry out the dumping operation.

The hot molten steel flowed down the outlet, Niu Xiaoqiang and Fang Dongping had already made complete preparations, and there were no problems during the pouring period.

After the pouring work was completed, the two immediately cooled the mold. When the mold cooled down, the three of them moved the mold to the cart and rushed to the processing workshop of Yuyang Agricultural Machinery Factory.

In the next half month, Fang Dongping and Niu Xiaoqiang used grinding tools to finish the original parts blank.

Fang Dongping is very strict and does not allow any omissions, if it weren't for this, the two would not have spent half a month processing the spare parts.

Then it's time to assemble the engine. This process is difficult to say and simple to say. In the eyes of ordinary workers, it is naturally very difficult, but in the eyes of Fang Dongping, assembling the engine is simply pediatric.

Even though the difficulty of the work is already very simple for Fang Dongping, in order to achieve excellence, Fang Dongping is not sloppy, he repeatedly confirms and checks every link, and strives to do his best.

Two days later, the diesel engine, which had poured Fang Dongping's lifelong ideals, was finally made. The moment the assembly work was completed, Fang Dongping unexpectedly did not cheer, or even laugh. He looked at this perfect work with red eyes, and his face was full of extremely complicated expressions.

Niu Xiaoqiang knew why the master was like this, to put it bluntly, it was actually very simple: Fang Dongping was sighing, lamenting his unbearable past.

In that unforgettable era, Fang Dongping wasted time and suffered injustice. It was the golden time of his life, when he was in the prime of life, and it was wasted in such a vain.

If those things hadn't happened, Fang Dongping would undoubtedly have achieved higher achievements in the field of engines, and the country's engine industry would have been able to make great progress. But there are no ifs in this world, it is impossible to change what has happened, and it is impossible to come back to those wasted years.

Fang Dongping was very unwilling and very sad and angry, the reason why he was reluctant to go out of the mountain was because he couldn't cross the hurdle in his heart. He would rather stay in the remote ravine of Aoshan and wait for death than hand over his skills to someone he doesn't like.

Fortunately, God opened his eyes and let him meet Niu Xiaoqiang. Niu Xiaoqiang saved his life and ideals, and found some comfort for the first half of his life that was not going well.