"Elevate to two thousand revolutions!" Zhuang Zicheng continued to shout.
The higher the engine speed, the faster the piston will be reciprocating back and forth. This is a test for the engine. Of course, two thousand revolutions are nothing. After all, many gasoline engines often have more than ten thousand revolutions, but the more the engine is
The longer the piston travels, the faster the back and forth. Therefore, high-power diesel engines and small-volume gasoline engines are incomparable. Motorcycles often have more than ten thousand revolutions. After all, the piston movement distance is short.
However, for current commercial vehicles, it is normal for this engine to increase the speed of more than 2,000 rpm. Now, with Zhuang Zicheng's call, the technician continues to operate, and the engine speed is faster. The turbocharger
The whistling sounds are getting louder and louder.
The power of the engine continues to increase. Qin Zhenhua frowned at the output number. After the speed increases, it will be difficult to continue to increase! From 1,500 rpm to 2,000 rpm, the power has only increased.
It's a bit bad when it reaches 700 horsepower.
The engine is running at high speed and various data are constantly being updated. At this time, the turbine intake pressure is already very high.
Qin Zhenhua said: "The efficiency of the turbocharger seems to have begun to decrease."
"Yes, it has begun to decrease." Zhuang Zicheng said: "According to this output, even if the rotation speed is increased, the ultimate output power of the engine is about 800 horsepower, which is different from the required one thousand horsepower.
of."
For tank engines, the first thing they pursue is power performance. Even if the power is squeezed, they must be determined without hesitation. The original 59 tank engine could only be overhauled for 500 hours, which is worth it. Now,
They have begun to care about their lifespan. This kind of engine is transplanted from commercial engines, so it can have a service life of thousands of hours or even longer, but the power must meet the standards.
For a tank with an estimated weight of about 30 to 40 tons, the power of 800 horsepower is actually good. The Type 80 tank, which has been improved from the 59 tank, only uses a 730 horsepower diesel engine. However, Qin Zhenhua
I still feel dissatisfied. This little power is not enough to make the new tank rush like a flying one.
"Can the power be improved?" Qin Zhenhua couldn't help asking.
"Of course." Zhuang Zicheng said: "Now, turn on the secondary turbocharger."
Hearing Zhuang Zicheng say this, Qin Zhenhua realized that in order to let the tanks go to the plateau, they considered the situation of the plateau when designing the engine. For example, on a plateau of 4,500 meters, the air is only 10% of the sea level.
Sixty-five, in this way, even if there is an ordinary supercharger, it won’t work. Therefore, the solution is to have two-stage superchargers.
This is not a new technology at all. In the era of propeller aircraft, in order to make the aircraft fly up to tens of meters, two-stage superchargers were used. Only in this way can the aircraft's piston engine suck in enough air.
Now, in order to go to the plateau, they also use two-stage superchargers. However, in the plain area, the first-stage supercharger can reach the output power demand of 800 horsepower. In theory, it is enough for normal times.
Only when you reach the plateau do you need to turn on the second-level supercharger. However, in the era of propeller aircraft, there is no unnecessary control capability, and the two-level supercharger is turned on on the ground. Now, with the advancement of technology, you can
Turn on and off.
At this time, during the test run, the second-level turbocharger was turned on. As the technician operated in front of the computer, a more harsh scream came from Qin Zhenhua's ears. At this time, it was as if he was standing.
Next to the jet plane.
All the two-stage superchargers are turned on. As the supercharger works, more air is bulging into the engine and more fuel is injected. At this time, the horsepower machine displays the screen and the numbers begin to jump rapidly.
A synthetic curve next to it also made a brush and a huge wave appeared.
"Nine hundred horsepower, when two thousand revolutions, it has already outputted nine hundred horsepower!" Looking at the numbers above, Qin Zhenhua was extremely happy: "As long as the speed continues to increase, it will reach two thousand two hundred, or two thousand four hundred revolutions, or two thousand four hundred revolutions
, it will definitely reach a level of one thousand horsepower."
At this time, the turbine was whistling, and Qin Zhenhua's voice was deliberately increasing a lot. Even so, Zhuang Zicheng, who was beside him, still had to put his head closer to Qin Zhenhua to hear clearly.
At this time, when hearing Qin Zhenhua was talking about the engine's power output, Zhuang Zicheng nodded: "Yes, we plan to achieve an output of 1,000 horsepower at 2,200 revolutions, but this requires two-stage boost.
The engine is a burden on the engine, so, for the life of the body, in the plains, we hope that the army will only use a first-level supercharger and then open a second-level supercharger when it reaches the plateau. This can extend the life. If the army can agree, we
You can write the program into the ECU and decide whether to turn it on according to different atmospheric pressures in the outside world."
Qin Zhenhua nodded: "This is OK, but I hope to intersect the data of the accelerator pedal. If the driver steps the accelerator to the bottom during the activation process, then it means that a strong power output is needed. At this time,
The secondary supercharger should also be turned on."
Zhuang Zicheng nodded. He knew that when he needed power, he should never be stingy. For example, on the battlefield, he found that the enemy suddenly aimed at him, and the tank needed to speed up and avoid it. At this time, he still cared about his life span. He had to quickly throttle to the end.
Tanks provide the most powerful power output, so they are not considerate and have the need to use them in plain areas.
The engine is still running steadily, Zhuang Zicheng said excitedly: "My comrades, our engine has been ignited successfully. Now, we need to keep the engine running continuously, leaving a few people to stand firm, and others can celebrate the victory.
!”
In the engine test, one of the most important tests is durability test. How long does the engine run continuously without malfunctioning? It was supposed to be after multiple tests and then conduct this kind of test. However, now, Zhuang Zicheng can no longer bear it.
Once you have lived, let the engine enter the continuous testing process now, which can shorten the total test time and allow this engine to be equipped as soon as possible.
Of course, the rest of the people have to celebrate. Anyway, Qin Zhenhua has agreed to treat guests to Jianli Hotel!