"Don't have such a big resistance from Chairman Li, I'm also responsible for the project. ”

Liu Shengyuan was stunned for a moment, obviously not used to this kind of communication.

But Li Fanyu's identity was placed there, and he had to take it over - this made him a little angry, and the smile on his face became colder.

Li Fanyu shook his head, "What do you want to verify? We believe that we participated in this project at the request of your Yishu Group, and now you are playing this game with me, what is it for?" If you have a better power supplier, don't want to cooperate with Zhengxin, just say it. We believe that so far there is no product that cannot be sold and is not popular. It's okay, don't have any worries, just say it. ”

Li Fanyu's direct showdown made all the people in the delegation quite embarrassed.

Because everyone knows clearly that at this stage, the Jingwei project is inseparable from this Poseidon H.

"Dong Li, that's not what we meant. Seeing that the leader was in difficulty, Wang Cheng immediately stepped forward to explain.

"That's like this, according to our original plan, considering the particularity of the Jingwei project that requires long-term and high-load overseas operations, we are ready to adopt the Swedish NVF fuel supply system with relatively open technology and stable supply in terms of oil supply. In this case, there may be a conflict with the fuel supply system of the Poseidon H46 series engine, so I want to carefully evaluate it and prepare for the corresponding adjustments. ”

Li Fanyu frowned, "The Poseidon H series engine is used as the main propulsion force of the ship, and according to our technical planning, it can meet the three types of natural gas, conventional marine diesel and heavy oil. These three types of oil need to be switched back and forth, so the oil supply system naturally has to use our own matching. If there is a modification, it should be that the supplier of your fuel supply system takes Poseidon H as the core and makes corresponding modifications, right?"

"You can't say that, Dong Li. Just like a car, a ship needs to be considered in all aspects before deciding on each assembly. A stable and efficient power system is the main part of the ship, but a stable fuel supply is also an important part of ensuring the efficiency of the ship. Especially in the Jingwei project, which has been working on the islands and reefs for a long time and with a large load, fuel supply is a big problem. From this point of view, we also have to be cautious. ”

After Wang Cheng finished speaking, an expert immediately spoke out in support, "Wang Gong is right, our Yuchai has had in-depth cooperation with the Swedish NVF, and the company's communication fuel supply technology is quite mature. The company itself is also one of the world's top 500 companies, with considerable strength. In fact, the dual-fuel supply system of this company is one of the best in the field. It is absolutely suitable to match this set of oil supply system with the Poseidon H of Zhengxin. ”

"Well, that's what Miao Gong said. When Weichai made power solutions for domestic 10,000-ton container ships, we also cooperated with NVF. Their technology is very mature, and the equipment technology is also quite high. The dual-fuel fuel supply system is very good, and what impresses me the most is that they switch to the dual-fuel fuel supply system. It is clean and neat, does not drag mud and water, and has a much smaller impact on the engine than other manufacturers. ”

Seeing that a group of people supported Wang Cheng's statement, Liu Shengyuan smiled slightly and glanced at Li Fanyu, "How? ”

Li Fan smiled foolishly.

Because considering the switching problem when the three fuels are common, the fuel supply system of the Poseidon H46 main push series engine was specially optimized by him and Liu Qing's team.

The points that those Rausch experts said just now, Li Fanyu believes that the oil supply system of Poseidon H can also do it.

At this time, seeing everyone praising foreigners' things like this, I really breathed a sigh of relief in my heart.

He turned around and waved to Liu Qing, who was huffing, "Qingzi, have we done our fuel switching test?"

Liu Qing glared at the expert engineers in the delegation, "The diesel state calibration has not been completed, do you say that the fuel switching test has been done?"

Li Fanyu nodded and patted the shoulder of the goods, "It just so happens that the experts of the inspection group have objections to our technology, so let's do it on the spot, and let everyone see if our fuel supply system can achieve the expected results." Is it just a cut of foreign technology? ”

Liu Qing looked at his eyes and got to the point.

"Done!" he said, and beckoned to the Zhengxin engineers who had been gearing up for a long time, "Come on, come on, brothers." Show it to the experts. ”

Everyone held their breath, and in front of the so-called authorities and experts in the field, they naturally wanted to behave. The fuel supply system and multi-fuel changeover were quickly ready, and the test began.

Due to the differences in the performance of natural gas and diesel, the electronic control system and fuel supply system have been matched and optimized accordingly in the Poseidon H series dual-fuel engine system.

At the beginning of research and development, Li Fanyu started from Han Lao's idea and took the substitution rate of natural gas for diesel as an important indicator of performance.

Therefore, the fuel supply principle of Poseidon H is to greatly increase the substitution rate of gas for diesel, so as to give full play to the significant advantages of natural gas fuel and improve the economy in the process of ship navigation.

Considering that the improvement of the substitution rate is constrained by a series of problems such as combustion performance, working stability, and emissions.

Therefore, Poseidon H gas instead of diesel is to use only diesel as fuel at idle speed, use a small substitution rate at medium and medium loads, and the substitution rate can reach a large value at high loads. 、

Considering the efficiency of medium-speed engines, this alternative is also linear and reacts quickly depending on the state of the engine.

In order to meet the coordinated control of natural gas, air and diesel volume, so that the substitution rate of natural gas for diesel under each working condition is optimal, and the best combustion performance of dual-fuel engine is an important task that must be solved in the future

To ask questions. Electronic control and oil supply system, Li Fanyu has made the most sophisticated design.

As far as the fuel supply and injection system are concerned, micro-injection is adopted instead of conventional injection.

When the engine works in dual-fuel mode, it is coordinated by actuators through mechanical and electronic control, and the most suitable fuel supply is achieved through a single fuel injection pump.

Compared with foreign countries, Li Fanyu is not clear about the level of foreign countries, so he is not easy to say.

However, it is definitely enough to meet the needs of the Poseidon H46 series engine!

It is also the most suitable for the Poseidon H46 series!

In Li Fanyu's view, this is like buying clothes - no matter how good the brand is and how expensive the price is, it is not as good as a custom-made fit!

Testing is well underway.

Looking at the Poseidon H4616V at work, several experts from Weichai and Yuchai discussed.

"The oil supply system of the Swedish NVF is really good and sophisticated. The 10,000-ton ship we loaded last year was the one we purchased. Not to mention the responsiveness, the fuel switching is also neat. It is a lot higher than the PioneS of the American company Claisona. ”

"Well, we've used that package for shipping. It's good, it's just a little expensive. ”

"yes, nothing else. Let's say that the single fuel supply pump of their III-541 dual-fuel switching system can reach a maximum flow of 1/4 ton of gas per minute, but it can be completely shut down in 2 seconds at peak flow. Tsk, but it's really expensive, a set costs more than 1.3 million, but the life span is only 300 hours. ”

"The technical content is so high, and the more expensive it is. ”

"Yes, the fuel injection is precise enough, and it is good for the engine, and it also saves a lot of fuel."

Li Fanyu, who was standing next to several people, grinned angrily when he heard this.

……

Finally, after more than an hour, all the performance indicators of the oil supply system were put on the display screen of the test bench.

When I saw the test results, the experts who were originally determined and commented on the oil supply system of Poseidon H were silent!

Because.......

Based on this result, Poseidon H's oil supply system, whether in sensitivity, fuel supply accuracy, or linearity of gas and diesel fuel substitution, is much better than the Swedish NVF touted by them!

"How is this possible?"

Seeing such a result, an expert from Yuchai exclaimed.

Li Fanyu gritted his teeth and directly signaled Liu Qing to stop all the test equipment.

He personally took the wrench and the special dismantling tool, and removed the oily one-way pump on the oil supply system by dividing it by two.

Ignoring the brown diesel oil that stained his sleeves, he walked in front of the experts and Liu Shengyuan just now.

He raised the one-way pump and said, "This, Zhengxin is made." The gas flow can reach up to half a ton in one minute, and it closes without injury in 0.5 seconds. In addition to supplying gas, diesel and heavy fuel can also be injected directly without using a separate oil circuit. Guess how much this stuff costs?"

"Uh...... Two million?"

Everyone was puzzled by his sudden movements, but when they saw him ask, some people still answered tentatively.

Li Fan smiled foolishly, and directly put the one-way pump on the ground, "You guessed too much, the cost is seven hundred and five, one more point I am your grandson." ”

"A bunch of silly beeps. Suckers. ”

Looking at the long mouths and round eyes of a group of people, he squeezed through his teeth.