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Chapter 41 Troubleshooting
Of course, an aero-engine consumes lubricating oil during its work, but there is a normal amount. For example, the oil consumption of a turboprop six engine consumes 220 liter of lubricating oil every 1 hours.

If the amount is less than this, it means normal lubricating oil consumption; if it is greater than this amount, it means high lubricating oil consumption. Once there is a large amount of lubricating oil consumption in the field, field technicians are required to troubleshoot and solve this problem.

The oil consumption of these three turboprop six engines is a bit high. According to the data provided by the military, the oil consumption of one of them is as high as 11 hours per liter, which is much higher than the normal value.

"Director Wang, Director Meng, a total of three turboprop six engines were delivered last night," Wen Wu, director of the test workshop, reported the situation.

After listening to the situation report, Wang Tianfang said, "You haven't tested the car yet, arrange a test drive right away."

Generally speaking, the engine returned to the factory for troubleshooting must first be tested to understand its condition, and then troubleshoot, and the engine is often disassembled.

Wen Wu said, "We have kept the turboprop six test bench empty, and we are waiting to test these engines."

"Well, arrange a test run right away." Wang Tianfang nodded, and said again, "Bring over the resumes of these three engines, we need to have a look."

Each engine has a resume, which is equivalent to its ID card.Each resume book is A3 size, thick and large.

There are a lot of things recorded in it, not only the batch number, processing status, and qualification status of almost every part, but also the engine assembly status, test run status, etc. These things are clearly recorded.

Wang Tianfang took the resume book numbered No. 0212 and looked through it carefully.

The test bench is making preparations before the test run, such as hoisting the first engine to be tested on the test bench, and the test workers connect various lines and pipelines to the engine, and install propellers on the engine, etc.

The turboprop six engine is mainly used as the power of the Y-[-], which is a four-engine propeller engine. The propeller is removed when the engine is returned to the factory, and the propeller must be installed for a test run.

406 Workshop.

Lin Feng compiled another CNC program and saved it in a [-]-inch floppy disk. In the afternoon, he will process the fuel pump cover plate of the piston six engine on the domestic three-coordinate CNC machining center.

The fuel pump cover plate is made of aluminum alloy, and the accuracy requirement is not high. This process mainly processes a circle of bolt holes.

The NC program was ready. Lin Feng stretched himself out, stood up and moved around a bit. This morning he wrote a novel for more than an hour at work, and then edited the NC program. He didn't move for more than two hours.

It is very important to combine work and rest, so Lin Feng did not rush to continue coding, but went to the craft technology room not far from the next door, where there were many people and it seemed more lively.

No, several craft technicians are discussing one thing.

"The oil consumption of the three turboprop six engines seriously exceeds the standard. This is a big accident!"

"I heard that an emergency meeting has been held in the factory, and representatives of General Feng have attended the meeting."

"The meeting is over. Director Wang and Director Meng have already gone to the test workshop."

"."

After listening for a while, Lin Feng roughly understood what was going on. It turned out that the oil consumption of three turboprop six engines seriously exceeded the standard.

This is no small matter.

I hope the factory can solve this problem as soon as possible, Lin Feng thought in his heart.

"Little Lin, come here."

Jiang Haitao, the technical director of the workshop, shouted at the door of the technical room, and Lin Feng immediately got up and went over.

"Director Jiang, what's the matter?"

Jiang Haitao did not beat around the bush, "Follow me to the test drive workshop now, and attend the technical coordination meeting in the factory in the afternoon."

What, go to the test drive workshop now!

Lin Feng said, "Director Jiang, the fuel pump cover plate for the six pistons needs to be processed on the domestic CNC machine. I haven't sent the CNC program yet."

Jiang Haitao waved his hand, "The processing of the fuel pump cover plate is suspended. For the factory, it is a big deal to solve the problem of excessive oil consumption of the three turboprop six engines."

Well, everything is up to you.

Lin Feng followed Jiang Haitao out of workshop 406. At the gate of the workshop, a tricycle was ready.

In 1990, a small car was still a very rare thing. Apart from a small truck in the 406 workshop, there was only this side three-wheeler.

In about ten minutes, Bian Sanlun arrived at the test car workshop, and under the leadership of Jiang Haitao, went straight to the test car stand.

"Director Wang, we're here."

Wang Tianfang nodded, "Just find a seat and sit down, let's take a look at the test drive together first."

Lin Feng found a seat in the corner and sat down. The people present were all bigwigs. He was just a technician, so it was not easy to sit with those directors and section chiefs.

The test bench is divided into two parts, separated in the middle, half of which is the test bench for engine work, and the other half is the control room.

The control room is very large, with a large number of instruments and meters, as well as consoles. Through the huge safety glass, one can see that there is already a turboprop six engine on the test bench.

If you have good eyesight, you can still see the serial number of this engine is 0212.

It didn't take long, only about 10 minutes on the second or third, and the director of the test workshop reported, "Director Wang, Director Meng, the preparations are ready, and the test run can begin."

Wang Tianfang raised his hand to check the time, waved his hand and said loudly, "Start the breakdown test!"

The door of the test stand was closed, all the workers evacuated, the huge air intake grill began to open, and the alarm bell rang for the first time.

The test car alarm bell rang three times in total, with an interval of 2 minutes between each time.

There is a set of strict procedures for the test run, which must be strictly implemented.

Although Lin Feng has been working for three years, he has been engaged in the machining of engine parts. This is the first time he has actually seen the engine test run.

After the third alarm, the engine started.

The turboprop six engine is started by two starter motors, and the engine is driven by the starter motors.

The two starter motors work to drive the compressor and turbine rotors of the engine to start to rotate, and the speed is getting faster and faster. After reaching a certain speed, the engine is ignited!
Although the sound insulation performance is very good through the huge safety glass, Lin Feng can still clearly hear the sound of the engine working.

"Slow train for two and a half minutes!"

Wen Wu cameo as the commander-in-chief of this test run, and ordered loudly that the engine entered the slow running state!
"Engine idle state is normal!"

"The torque is normal, the vibration is normal, the noise level is normal!"

Several test drivers stared at the instruments and meters on the test console and loudly reported the working status of the engine one by one.

After two and a half minutes of idling, the engine entered the rated power working state, the rotor speed of the engine compressor rotor reached 12300 rpm, and the flames and the exhaust gas could be seen from the tail jet of the turbine.

No, the situation is not right!
Wang Tianfang, Meng Bowen and others are all experts, and they knew something was wrong when they saw the exhaust fumes coming out.

(End of this chapter)