Chapter 5 Becoming the Focus
Liao Chengwen didn’t know much about engines, but he knew the level of the people at the Capital Internal Combustion Engine Factory.
The engine of the BJ212 currently having problems is a gasoline engine model 492Q.
This engine is actually developed based on the engine of the GAZ 69 Jeep produced by the Polar Bear Gorky Automobile Factory.
In many places, everyone knows it but doesn’t know why.
Coupled with the impact of special events in the past ten years or so, there are even fewer people at the Capital Internal Combustion Engine Factory who are proficient in engine principles and fault analysis.
On this issue, Liao Chengwen felt that even if someone from the Internal Combustion Engine Factory came over, they would have to dismantle it and analyze it carefully. It would take at least several days to find the problem.
This is still a relatively ideal situation.
Bad luck, I probably won’t be able to find the reason for a week.
Now Jiang Hui has not done anything to confirm, just saying that it is a problem with the oil pump.
This made Liao Chengwen a little unhappy.
Is the teacher’s favorite protégé, Chenglong’s son-in-law, at this level?
On the first day of registration, he wanted to express himself. He understood this feeling.
But I used it in the wrong place.
“I don’t know if you have noticed that when there are problems with different parts of the engine, the abnormal noises they make are actually different.”
Seeing Liao Chengwen's expression, Jiang Hui knew that if he didn't say one, two, three or four today, his life in the technical department would not be so comfortable in the future.
People in several other departments may also regard themselves as a joke after dinner.
Originally after Jiang Hui joined the company, he wanted to find an opportunity to show off his skills so as not to be looked down upon.
Those who are engaged in technology have real skills, and leaders would not dare to bully them casually.
“What’s a different method?”
"Aren't they all the same?"
At this time, Dong Jianpeng couldn't help but interjected.
This can be regarded as asking everyone’s thoughts.
“If you feel that the engine has a sound similar to metal rubbing back and forth after starting, it may be that the oil-air mixture in the combustion chamber of the engine is not fully burned.”
“This way The situation is often caused by the use of substandard gasoline. ”
"Of course, sometimes excessive carbon deposits in the engine will cause abnormal noises like this. Cleaning the fuel system can relieve the symptoms."
Jiang Hui began to express his opinions.
Some people had doubtful looks on their faces, while others were smart enough to just pick up a pen and notebook and write it down.
These days, it’s not that easy to learn some real skills.
After teaching disciples, there are many cases where the master starves to death, so many people will hide their secrets even if they are teaching disciples, let alone teaching strangers.
If what Jiang Hui said is true, then this is definitely a very valuable experience.
Whether it is the personnel in the quality department, technical department, or vehicle quality department, they all know the value of this experience.
“If there is a squealing sound when the engine is cold started and it lasts for a period of time, then we should consider checking the drive belt and replace it if necessary.”
“Generally speaking , the transmission belt will make such a sound when it slips or the edge is worn thin."
Just after Jiang Hui finished speaking, Liu Darui next to him couldn't help but said: "Before replacing the belt on a BJ212 operated by the factory some time ago. , This kind of scream will indeed sound, which is very harsh to hear. "Once what others say is consistent with your own experience or knowledge, the level of trust will immediately rise to a higher level.
Obviously, what Jiang Hui said now made Liu Darui very convinced.
“When the vehicle slams on the accelerator, I hear a slight clicking sound in the direction of the engine, or a clicking sound. The sound is not particularly loud, but it will continue, but the car stops. Then it stopped ringing."
"Sounds like this are generally caused by the lack of oil in the engine or uneven valve clearance caused by the oil filter not being replaced for a long time."
"We. This is almost the case with these faulty cars, so I said there is a problem with the oil pump.”
Although it has not been finally confirmed whether there is really a problem with the oil pump, Jiang Hui's words were very logical and many people were quite convinced.
"Excuse me..."
Liu Darui was still thinking about asking if there was anything else, but then he suddenly realized that the person in front of him was very unfamiliar and he had never seen him before.
Next to him, Liao Chengwen immediately commented: "This is a new college student in our technical department this year. His surname is Jiang Minghui. His professional knowledge ranks first in the vehicle engineering major of Capital Institute of Technology."
" I originally thought that I only had a lot of theoretical knowledge, but I didn’t expect that I also had a lot of practical experience.”
Although he didn't solve it himself, Jiang Hui was also from the technical department. If he solved the problem, it would be the credit of the technical department.
"Little...Jiang Gong, apart from the three situations you just mentioned, are there any other causes of abnormal engine noise?"
Liu Darui immediately asked.
At this time, he was no longer in a hurry to confirm whether those cars really had oil pump problems. He wanted to get important experience first.
“Nature exists.”
Since we have already started talking, it is natural to simply talk more and conquer everyone at once.
“If there is a slight hissing sound from the engine, many people think that the hissing sound is the sound of air blowing.”
“Some people may think that it is their own illusion, or Careless people don't pay attention to such a sound at all. "
"If this sound is confirmed to exist, then you should consider whether the vacuum tube is broken or the vacuum leakage is causing the engine to lose rotation and low efficiency. ”
“To find out the cause of the sound, you have to check where the leak is and observe and determine the source of the sound. ”
Jiang Hui glanced around and found that he was now completely the center of attention.
Dozens of people gathered around to listen to him explain the analysis of abnormal engine noise.
“The last one is to hear the sound of a heavy hammer hitting the metal on the engine side, which will be accompanied by some engine vibration.”
“The best way at this time is to drive for repairs. The factory should dismantle it and check carefully. Generally, this kind of knocking is caused by some major problems in some parts of the engine."
"The most common ones are the five types I just mentioned. You just need more. You can actually identify it after listening to it several times.”
Seeing Jiang Hui finish explaining, Liu Darui couldn't help but take the lead in applauding.
This is really meaningful to their vehicle quality department.
"Xiaojiang, you just said that these faulty cars have a problem with the oil pump."
"Then how should we prove that it is indeed a problem with the oil pump?"
Liao Chengwen is very satisfied with the current situation. The technical department has made a contribution today!
However, he was also afraid of an accident, so he wanted to thoroughly confirm the situation.
That would be a perfect solution.
(End of this chapter)