Chapter 1227: Lack of greed

"The current specific situation is like this." Zhang Baozhong said: "The biggest problem we face is the serious shortage of funds to continue to develop 150HB, and Mr. Tan, you have money. This is a prerequisite for our cooperation."
This one is frank.
Tan Zhenhua nodded and said: "Yes, I have money, but investment is a business activity and pays attention to returns. Obviously this type of 150HB can't give me returns. Just now Zhang Gong, you said it yourself, even if 150HB will be launched in the future. It has also been recognized by the country, and the final production will still fall at the Jinxi Diesel Engine Factory, which has nothing to do with me."
"This is what we think about this issue." Zhang Baozhong is obviously confident, he said unhurriedly: "Of course 150HB cannot be handed over to other companies for production. However, referring to MTU's approach, we have developed a technical route. The civilian series will not be restricted. For example, based on the existing design, we can easily develop a V8 engine by removing 4 cylinders, and at the same time, we can change the two-stage turbocharger to a single-stage turbocharger. Supercharge to reduce costs; for example, change the cylinder layout and change the V-type layout to an in-line layout, and we can develop a 4-cylinder version. Through adjustment, we have a coverage from 147 kilowatts, which is 200 horsepower. To 735 kilowatts, which is the 1000 horsepower engine series, we can even reduce the bore diameter in the later stage, such as reducing the bore diameter from 150 mm to 130 mm, and then develop a small-sized engine series to meet different requirements. As a result, our country’s medium-sized and above medium-duty trucks, mining and construction machinery, diesel generator sets and other equipment also have reliable domestic engines. The demand for this is very substantial. I think Mr. Tan should be able to see these obvious Of the application scenario, right?"
It has to be said that Zhang Baozhong and the 5070 Institute he represents are very serious and meticulous in their research on Tan Zhenhua, and the reasons given are hard to pick out the fault. They have even planned detailed technology for the future civilian use of this engine. The development path, it is impossible for Tan Zhenhua not to give them a compliment in his mind.
In this way, there is no resistance to investing in this 150HB, but when Tan Zhenhua intends to agree and discuss the investment amount, timeline and other issues, another more greedy idea suddenly broke into him. Mind.
"Zhang Gong, um, that, let me ask a digression, all of you don't have marine diesel engines?"
Zhang Baozhong was stunned when he heard the words, and then took a deep look at Tan Zhenhua before saying: "Marine diesel engines, that is completely another discipline. Our research direction is automotive diesel engines. It is very different from that. I did."
"That's it..." Tan Zhenhua's tone was disappointed unconcealed.
"But President Tan, if you are also interested in marine diesel engines, well, I can introduce you some basic information first, and then recommend you to find someone. I think he should be able to help you."
Although knowing that it is impossible to get any practical help here today, it is good to listen to a diesel engine expert literate him, so Tan Zhenhua responded earnestly: "Gong Zhang, please advise."
Zhang Baozhong sorted out his thoughts a bit before he said: "According to the purpose, in the main application scenarios of diesel engines, marine use undoubtedly occupies an extremely important aspect.
Different from automotive diesel engines, marine diesel engines require higher output power, especially the torque required to output far better than automotive ones. Fortunately, ships generally have a larger installation space than land-based machinery. Therefore, marine diesel engines are of average size. All are big.
Generally speaking, we divide marine diesel opportunities according to the speed. Below 350 rpm, we call them low-speed diesel engines. This type of diesel engine has a large cylinder bore, long stroke, and large output power. The output power of a single unit generally exceeds 10,000. horsepower.
In terms of structure, this type of low-speed diesel engine generally uses in-line cylinders. The cylinder diameter is mostly hundreds of millimeters, the largest or even more than 1 meter, two-stroke, multi-cylinder parallel, cross-head structure, with large cylinders, long strokes, high compression, etc. Features: Because the volume factor can be less considered, the strength of the cylinder can be increased by stacking materials. Its average working pressure can reach 1.90-1.95 MPa, the efficiency can reach up to 55%, and the compression/bore diameter ratio can reach up to 4.2.
Since low-speed engines generally can directly drive large-diameter propellers and can achieve reverse rotation, gear reduction boxes and other transmission devices are omitted, which reduces the use cost. In addition, low-quality fuel oil can be used, and the operating cost is much lower than other types of engines. On large commercial ships, the installed capacity of low-speed diesel engines is absolutely dominant. Let's put it this way, almost all large commercial ships in the world are driven by low-speed diesel engines.
Above the low-speed diesel engine is a medium-speed diesel engine with a rotational speed between 350-1200 rpm. Most of these diesel engines have a four-stroke V-cylinder layout, which is small in size, light in weight/power ratio, and fast in braking. This type of high-power medium-speed engine is mainly used for passenger liners, work ships, ro-ro ships, luxury cruise ships, etc., and military applications are commonly used on landing ships, supply ships, auxiliary ships and other ships.
As for high-speed diesel engines with a speed above 1200 rpm, the main products are V-shaped layout, four-stroke, cylinder number 12-20, speed 1200-1800 rpm, average effective pressure 2.0-3.2 MPa, piston speed 10.5 -13 m/s, maximum explosion pressure 15-18 MPa; this type of diesel engine is mainly used as the main power of small and medium-sized ships, but the recent international trend is the emergence of a new "diesel engine-gas turbine" alternate power Installation, gas turbines are used for high-speed propulsion and diesel engines are used for low- and medium-speed cruises, and they have been applied on 6,000-ton warships.
At present, the international marine diesel engine manufacturing enterprises are becoming more and more concentrated. The technical strength and market share of Europe occupy the mainstream. The more famous ones include West Hans’s MAN and MTU, Gallupierstick, and Finlan’s Wärtsilä. Caterpillar has certain competitiveness in medium and high speed marine diesel engines.
Speaking of our China, the first marine diesel engine was a 2205 kilowatt low-speed diesel engine manufactured by Dalian Shipyard in 1959 and installed on the "Building No. 9" tanker, which was imported from the West in 1981 and 1982. A batch of patented technologies and newly developed models have been certified by Lloyd’s Register of Shipping and successfully exported. The "Great Wall" bulk carrier manufactured by Mr. Bao Yugang of Hong Kong Ship is equipped with the latest products they produce. Type marine engine. "
Uh, chatting and chatting, it seems to have found some inside information!
To be honest, when Tan Er placed an order to build those two special boats, he didn't care about the engine used, but now he discovered that these things are actually inextricably linked.
Then, the character Zhang Baozhong wants to introduce to himself, could it be...
"Mr. Tan, what I just introduced is just the most basic situation of marine diesel engines. If you really want to know more about or even invest in this industry, I suggest you go to the Magic Capital and talk to Academician Yang Liyang. He is our Huaxia The patriarch of the shipbuilding industry, oh, yes, if you are not familiar with him, you can first go to Academician Cai Qigong Cai of the Iron and Steel Research Institute. If they are two familiar, you can ask him to introduce them to you."
I knew it!