Three hundred and forty-one. Problems with ship engines.

Li Rujin quickly rushed back to the imperial capital after dealing with the matter of Baoshan Iron and Steel Plant, he just received the good news from the institute, and the silence technology had made a breakthrough, which made Li Rujin overjoyed, and hurriedly finished dealing with the things at hand, and hurried back to the imperial capital.

After Li Rujin returned to the imperial capital, he handed over a few reports to the Great Elder, and rushed to the research institute, and when he arrived at the research institute, Li Rujin saw a new type of silencer board, and the sound suppression principle and mode were the same as the previous ones, and they had not changed.

The biggest change is the treatment method located behind the silicon-dampening version, which is covered with vacuum glass tubes, and the vibrating wires inside have also been changed from one to three, reducing the vibration frequency.

The experimenter brought a box that was almost identical to the last time, except that the silenced version of the box had been modified. When a firecracker is lit, the quality of the firecracker is still barred, and the sound is deafening.

But after closing the lid, the whole world fell silent, and the deafening sound of firecrackers was almost completely blocked. When the staff opens the back layer of the panel, they can clearly see that the silenced version is working.

The vibrating wire in the vacuum tube kept vibrating, and it could be seen that the firecrackers were still exploding in the box, and you had to listen carefully to hear the sound of firecrackers. It's a huge breakthrough, and when technology reaches a certain height, every small step comes with a huge amount of hardship.

Just like a long-distance run, it is relatively easy at the beginning, halfway through it, it is already out of breath, and by the time it is the final sprint, it is already out of breath and exhausted, at this time, every step is taken, the athlete has to spend a lot of physical energy.

Victory is at hand.

After the firecrackers were over, Li Rujin walked into the office with the staff to listen to the detailed report and data. There are two biggest changes between this new silencing version and the previous silencing version, one is the addition of a vacuum glass tube, which effectively increases the silencing effect.

Second, it is to change the structure of the small hole, which used to be composed of paper materials, although the sound reduction effect is good, but it is not strong, and it is particularly easy to be damaged.

Later, after continuous research by the staff, the metal sheet was used instead, but it was difficult to cause the metal sheet to vibrate, and then the metal sheet brush was adopted, that is, the metal sheet of different thickness was arranged in layers, and each layer was installed with a shock-absorbing metal mesh, and at the end, a vacuum glass tube was used to eliminate the noise.

In this way, the noise is reduced layer by layer, and when the vacuum glass tube is finally reached, the noise has become extremely low, and the vacuum glass tube becomes the final terminator of noise. Achieve noise reduction.

Experiments have shown that under relatively ideal conditions, this technology can effectively eliminate more than 80% of the noise, and the effect is extremely obvious. But again, the cost has also increased sharply, and the price of one square meter has reached more than 3,000 yuan.

Moreover, it is difficult for this technology to be applied to the engine, mainly because the engine is heat dissipation, which has a huge impact on the silenced version. At the same time, the silenced version also has a great obstacle to the heat dissipation of the engine body.

Now, a technical conflict has formed between the two, which has become a technical difficulty. If this difficulty is not overcome, the sound attenuation technology cannot be applied to the engine.

Li Rujin pointed out at the meeting that solving the problem of engine heat dissipation is fundamental, and if the problem of engine heat dissipation is not solved, the engine will not be able to get on the car, and what is the purpose of engine development?

Therefore, noise is not the essence of the problem, engine heat dissipation is the essence of the problem, on the basis of solving the engine heat dissipation problem, and then solve the engine noise problem, there must be a sequence of problems, during this time, the direction of research and development is a bit deviated.

At the same time, Li Rujin commended and affirmed the progress of silencing technology, this technology can not only be used in tanks, but also in submarines, tanks can not need a too quiet engine, but submarines definitely need a quiet engine.

Therefore, Li Rujin needs to supplement and split the engine research and development team, a group of personnel continue to develop diesel engines, but the research and development direction is closer to marine diesel engines, this group of personnel, to go on a business trip, to Shanghai, there, there is a local research institute, when the time comes, the two sides will cooperate.

When Li Rujin rushed to Huhai to clean up the mess of the steel plant, Huhai once approached Li Rujin and wanted to cooperate with the Imperial Capital R&D Center through Li Rujin to jointly develop steam engines for ships.

For this kind of request for the benefit of the country and the people, Li Rujin will definitely agree, and then when Li Rujin and the other party discussed together, the research and development personnel of the Shanghai Sea side told the shipowner about his hardships.

Since the Darwen Empire occupied the three monkey states in Southeast Asia and carried out colonial rule, the shipping of the Darwen Empire has also developed rapidly, and a steady stream of cargo ships sailed in the South China Sea.

At this time, the engine of the cargo ship was mainly based on the steam engine, and the steam engine consumed a lot of fresh water in the work, and it was not a big problem to sail between the South China Sea.

The Vietnamese monkeys have made the Dawen Empire honest in recent years, and basically there will be no danger when the ships go to replenish fresh water and provisions.

But with the pace of expansion of the Darwen Empire, Western Australia also fell into the hands of the Darwen Empire, and what did the Darwen Empire occupy Western Australia for, isn't it the rich iron ore of Western Australia? But at this time, the problem of insufficient shipping capacity of the Dawen Empire broke out.

The development of the shipping industry has greatly promoted the development of the shipping industry, and the cargo ships of the Dawen Empire are also getting bigger and bigger, and the displacement has rapidly increased from 5,000 tons to 10,000 tons, and now it is beginning to advance to 50,000 tons.

However, the problem of ship engines has limited this development, and it is difficult for ships above 20,000 tons to have matching engines, unless they are imported from the Europa Empire at a huge cost.

But this kind of price is unaffordable for ordinary ship owners, and the ship industry of the Dawen Empire has fallen into a bottleneck.

Moreover, there is a huge defect in the navigation of the steam engine in the ocean, that is, the problem of fresh water consumption, in the South China Sea, you can also go to Vietnam to replenish it, in the vast ocean, where to find fresh water supply!

The shipowner had to increase the storage of fresh water, hundreds of tons of fresh water poured into the ship to support the consumption during the voyage, so that it could only maintain daily consumption, if there was a storm to avoid or the ship ran aground, then the owner was miserable. In the light case, the shipowner will call for help and try to rescue the trapped ship, and in the worst case, it will cause loss of personnel due to insufficient fresh water supply.

In this case, the Dawen Empire urgently needed a ship steam engine suitable for long-distance navigation, so the research institute in Shanghai hoped to reach cooperation with the research institute of the imperial capital to jointly develop it, and after the successful research and development, the imperial capital research institute could have sixty percent of the benefits of the research and development results.

After careful thinking, Li Rujin gave up the research and development of steam engines and directly developed low-speed diesel engines for ships.

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