Chapter 1274

Before that, China has never developed diesel engines by itself. All engines are imitated. Even a small internal combustion engine is also the basis for investigating the industrial heritage.

Needless to say, the heavy-duty diesel engine used by heavy trucks, even the engine used by cars, look at future generations. How many independent car enterprises have been supported by an old Mitsubishi nose? Even before Qin Guan's crossing, there were still some enterprises that did not want to make progress and continued to use this old Mitsubishi nose.

North heavy truck factory is a famous enterprise in China, but now their engine is still developed on the basis of WD615. It is not so easy to establish a first-class engine R & D system.

Now, it is a good opportunity to take advantage of this project to raise the power system of heavy truck engine to a higher level.

This in-line six cylinder engine still has potential. For example, in later generations, there is an engine code named yck15. Through cylinder expansion, the displacement reaches 15.26 liters and the maximum power reaches 650 horsepower.

This 6-cylinder 4-Valve guovi engine has two power sections of 600 HP and 650 HP, and the maximum torque is 2800 and 3200 nm respectively. This maximum torque output can be realized when the engine rotates 1000 ~ 1500 rpm. It is worth mentioning that its B10 service life is as high as 1.6 million km, ranking among the best in domestic engines.

It can be said that this kind of high-efficiency engine is what domestic heavy trucks need most. If we can come up with such a power on the basis of our own engine, we can really be called a heavy truck factory representing the world's advanced level.

However, he ribala shook his head: "no, we have a hunch now that 400 horsepower is a great limit, and it is difficult to break up. If we want to reach the power of more than 600 horsepower, we'd better start a new stove and build a V8 engine."

Among in-line engines, six cylinders are the largest. Increasing the number of cylinders will further increase the length of the engine and make it impossible to place. Therefore, further upward, that is the V-shaped layout, with four cylinders on each side, which can effectively reduce the total length of the engine.

In fact, among the six cylinders, there is the difference between in-line six cylinders and V-type six cylinders. V-shaped layout is more reasonable, but it also tests designers more.

Now, if you want to continue to increase the displacement and power, it is best to increase the number of cylinders, then you must use the V-engine.

"If we develop a V-type engine, we have to find a suitable research object," Qin Guan said.

Now, the tank engine is also V-type, but this engine is not comparable. It must be the same vehicle diesel engine, so that it can achieve high horsepower and maintain certain economic performance and reliability. It will not be a chicken rib that can only run for hundreds of hours.

At the same time, it is still impossible to study by ourselves. The best way is to find a model to emulate.

"Yes, brother Guan, if we start this new engine project, the best way is to imitate the engine of the Scandinavian heavy truck in Europe," he zhibala said.

Steyr is not famous in the field of heavy trucks. It is precisely because it is not famous that it can cooperate with Han.

The three major manufacturers of heavy trucks in Europe are Mercedes Benz, Volvo and Scania, of which Scania is the most famous and known as the king of trucks.

As early as 1969, Scania launched a 14 liter V8 engine with an output power of 350 HP. It was known as the strongest truck diesel engine in Europe at that time.

The Scania lb140 model equipped with this V8 engine soon attracted a lot of attention. In daily operation, this engine can output high torque at low speed, which is very attractive to heavy vehicle drivers.

Since then, the V8 logo on the door has become the most desirable engine for heavy truck drivers.

In 1991, on the 100th anniversary of Scania's founding, a full range of engines upgraded to Euro I emission standards were launched, including two V8 engines: a 450 HP large pump diesel engine and a 500 HP EFI diesel engine. The latter is also Scania's first engine exceeding 500 HP.

In other words, by the 1990s, the most advanced heavy truck engine in the world had only transitioned to 500 horsepower.

Later, in 2000, Europe implemented Euro III emission standards, Scania launched a new engine, and the 16 liter V8 model replaced the original 14 liter V8 model. The new engine adopts modular design, and many components are common to 11 and 12 liter six cylinder engines.

With the continuous introduction of a new series of V8 engines, the output power includes 500, 560 and 620 HP, and the maximum torque reaches 3000 nm.

Now, it is only the 1980s. The engine technology is too high to make the heavy truck exceed 600 horsepower.

"We now have the most sophisticated machining technology. We can further increase the pressure of the fuel system and effectively increase the power of the engine through these ways," he zhibala said "We also need to take advantage of the improvement of our current electronic level and adopt the electronic injection system to improve the combustion of the engine. Through these measures, we can further improve the performance of the engine. If you approve our technical route, we can carry out a series of research and strive to develop such an engine."

How did the engine technology progress? A very important point is to increase the pressure of the oil pump. The higher the pressure, the better the atomization of diesel, and the easier it is to achieve complete combustion, so as to significantly improve the power under the condition of constant fuel consumption. In fact, these projects have been in pre research in North Heavy truck factory.

Now, just as there is a demand, just launch a V8 engine to realize an upgrade of the power system!

Qin Guan nodded: "don't worry and do it boldly. If you encounter capital problems in the development, our head office can continue to support."

Qin Guan doesn't know how to do it. Qin Guan is good at delegating power and letting his men do it safely and boldly. It doesn't matter to burn a large amount of funds. The profitability of Beifang Industrial Company is very strong. Besides, he has a money cemetery.

I haven't opened the road of exchange for a long time. Now, if necessary, I can exchange another sum of money. Now, it's also possible to exchange Eagle currency. Our foreign exchange reserves are already large. It won't attract attention to use them together with the money from the currency cemetery.

Suddenly, Qin Guan frowned. He used the spirit point scanning system and found that there were unexpected guests.