"Useless? This data is an important data for the engine, why don't our tanks use gasoline engines? In addition to the low torque, there is also an important reason, that is, it burns too much oil, and the maximum travel is only more than 100 kilometers. ”

Of course not! This kind of tank, no one likes. Therefore, it is normal for gasoline engines to be eliminated.

"A gas turbine is just like a gasoline engine." Qin Zhenhua introduced: "The American AGT-1500 engine has a fuel consumption rate of 280 grams per kilowatt hour, while the Soviets have poor technology and have not been disclosed, only some speculations in the West, its data is about 300 grams per kilowatt hour." Let's take a look at the diesel engine used by the German Leopard-2, which is 244.8 grams per kilowatt hour. ”

To measure fuel consumption, you have to average to the power, to be precise, it is to use an hour's fuel consumption, divided by the power, and the data obtained is meaningful, otherwise, the horsepower is large, and there must be more oil, so it is impossible to compare the quality of the power system.

Looking at these data, it can be found that the American engine burns much more oil than the German one, and this is only the average data!

"In this way, we may not have an intuitive image yet, so let's talk about it according to the specific data we already have." Qin Zhenhua continued: "The Americans' M1 tank, the capacity of the fuel tank is 1900 liters, that is to say, it has to carry two tons of fuel, the maximum road trip, but about 500 kilometers, on average, the fuel consumption of 100 kilometers is about 383 liters, and then look at the German Leopard-2 tank, the fuel tank capacity is 1200 liters, the maximum road travel, it has reached 550 kilometers, and the fuel consumption of 100 kilometers is 218 liters." ”

The latter statement is much easier to understand than the previous one, specifically, that is, the American tank, which carried about twice as much fuel as the Germans, only to achieve a similar figure on the maximum trip!

"As for the Soviets, there are only calculations from the outside world, so I won't compare them." Qin Zhenhua said: "Germany and the United States, the weight of the tank is about the same, the engine is 1,500 horsepower, but the fuel consumption, there is a big difference, and I also want to point out that although the Americans claim that their engine is a multi-fuel hybrid engine, but in fact, they like to use aviation fuel the most." ”

After all, it was improved by using an aero engine, although it was a multi-fuel hybrid engine, but in practice, there were more cases where aviation fuel was used.

Burn a lot of oil, burn aviation fuel, when he said this, He Lao finally spoke there: "It seems that even if we build this kind of engine, we can't afford to use it, Staff Officer Wang, let's put this plan on hold for the time being." ”

"But..."Staff Officer Wang was anxious, he originally wanted to strongly recommend changing directions, overtaking in corners, the benefits of gas turbines are in front of him, so many benefits, what's wrong with burning more oil?

His is not over yet, Qin Zhenhua's introduction began again: "We know that the tank engine used now, step on the accelerator when you use it, and loosen the accelerator when you don't use it, the diesel engine has very little fuel consumption when it is idling, and the gas turbine is different, whether it is low speed or high speed, the fuel is burned like that, so if we want to go out on a mission and need to maintain idle speed for a long time, the gas turbine may burn out all its fuel while waiting for the mission." ”

It's not just fuel-intensive, it's also fuel-intensive in every situation! Drivers who are stingy with fuel money can't wait to idle the whole process, just because they are idle and fuel-efficient, but gas turbines are not, and there is no difference between high speed and low speed!

"In addition, the gas turbine requires a fairly large air flow, which may not be a problem under normal circumstances, but in special areas with large winds and sands, the air filter element of the gas turbine is easily clogged." Qin Zhenhua said: "In windy and sandy weather, it is best not to start this kind of engine." ”

In the eighties, sandstorms were still terrible, and in the fall, in spring, there were often sandstorms for many days in a row, and in this kind of weather, the gas turbine was not suitable for starting, and once the filter element was blocked, those sand particles rushed into the engine that rotated tens of thousands of revolutions, what was the harm, just think about it.

"When it comes to gas turbines, we will talk about its small size, but if we look at the engine compartment of the M1 tank, we know that its volume is not small, at least it is definitely much larger than our Panther diesel engine, because it also has intercooling and reheating devices.

The king's staff was hesitant and speechless. His situation, everyone can see it clearly, one bottle is dissatisfied, half a bottle is shaking, the level is not reached, so he plays a big knife in front of Guan Gong.

After this incident, it's time to learn a lesson.

"Zhenhua, let's talk about it." He Lao continued.

"Okay, then I'll introduce it to you, first of all, the intercooler, which is the same as the intercoolant of our diesel engine." Qin Zhenhua introduced.

The factors that affect the power of a gas turbine are the air flow rate and the temperature before the vortex. Inside the gas turbine is a series of fan blades, the front one is called a compressor, and its performance directly determines the amount of air quality entering the combustion chamber. The higher the temperature before the vortex, the greater the gas expansion of the engine and the greater the energy it contains.

When the compressor pressure ratio of the gas turbine compressor is increased to a certain level, the compressed air of the compressor will become hotter and the air flow rate will decrease. In turbocharged engines, the same is true, the higher the air temperature, the lower the density.

So, the intercooler comes into the picture, lowering the temperature of the air and increasing the amount of air entering the engine.

The gas turbine is evolved from the aero engine, the aero engine is propelled by the exhaust gas, and the gas turbine adds a turbine, so that the gas pushes the turbine into mechanical energy, but the exhaust gas produced by combustion after pushing the power turbine to do work still has a high temperature. Therefore, a device can be added to heat the air that is about to enter the combustion chamber by using the temperature of the exhaust gas to recover the energy in the exhaust gas to improve efficiency, which is the heat recovery device.

With the addition of these, the volume of the engine has become very large.

"I didn't expect that there is so much knowledge in this gas turbine!" After listening to this, He Lao said with a sigh.

"Yes, so, there is no problem with the use of gas turbines on ships, but the use of tanks will test the technology, the British have a deep attainment in gas turbines, and we have not seen the British engage in gas turbine tanks, only the United States and the Soviet Union have done it." Qin Zhenhua said: "Anyway, if I were a tank designer, I wouldn't touch it." ”

The first to realize the gas turbine of all warships was the United Kingdom, and the British still used 1,200 horsepower diesel engines for tanks, and they couldn't make 1,500 horsepower diesel engines, so they didn't use gas turbines.

Why? They know the shortcomings of gas turbines very clearly.

"It seems that the Americans invited us to inspect their tanks, and there was no need for them, and they were almost fooled by the Americans." He Lao said with a sigh.

What the? An invitation from the Americans? What do you mean by unnecessary? If you have a chance, you must see it! Qin Zhenhua felt a thrill in his heart.