The car giant started by marrying the daughter of the king

Chapter 5 Becoming the Focus
Liao Chengwen didn’t know much about engines, but he was very familiar with the level of the people at the Capital Internal Combustion Engine Factory.

The engine of the BJ212 that is currently having problems uses a gasoline engine with model 492Q.

This engine was actually developed based on the engine of the GAZ-69 jeep produced by the Polar Bear Gorky Automobile Plant.

In many places, everyone knows what it is but not why it is.

Coupled with the impact of special events over the past decade, there are even fewer people at the Capital Internal Combustion Engine Factory who are proficient in engine principles and fault analysis.

Regarding the current problem, Liao Chengwen felt that even if people from the Internal Combustion Engine Factory came, they would have to take it apart for careful analysis, which would take at least several days to find the problem.

This is still a relatively ideal situation.

With bad luck, I probably won’t be able to find the cause for a week.

Now Jiang Hui did not do any confirmation and just said it was a problem with the oil pump.

This made Liao Chengwen a little unhappy.

Is this the level of the teacher's favorite student and son-in-law?

He understands that I want to show myself on the first day of reporting.

But it was used in the wrong place.

"I don't know if you have noticed that when there are problems with different engine parts, the noises they make are actually different."

Seeing Liao Chengwen's expression, Jiang Hui knew that if he didn't explain everything today, his days in the technical department would probably not be so comfortable in the future.

People from other departments would probably also treat me as a topic of conversation after dinner.

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 dare not bully them.

"What's the different method?"

“Aren’t they all pretty much the same?”

At this time, Dong Jianpeng couldn't help but interrupt.

He actually asked what everyone was thinking.

"If you feel a sound similar to metal rubbing back and forth in the engine after starting it, it may be the sound of the oil-gas mixture in the engine's combustion chamber not being fully burned."

"This is often caused by the use of substandard gasoline."

"Of course, sometimes too much carbon deposits in the engine can cause such abnormal noises, and cleaning the fuel system can relieve the symptoms."

Jiang Hui began to express his own views.

Some people had skeptical looks on their faces, while some smart ones just picked up pens and notebooks and wrote them down.

These days, it’s not easy to learn some real skills.

There are many cases where a master starved to death after teaching his apprentice, so many people will keep their skills secret even when teaching their apprentices, let alone teaching strangers.

If what Jiang Hui said really makes sense, then this is definitely a very valuable experience.

Whether it is the quality department, technical department, or vehicle quality department, everyone knows the value of this experience.

"If the squealing noise occurs when the engine is cold started and persists for a period of time, then we should consider checking the drive belt and replacing it if necessary."

"Generally speaking, this noise is caused by the drive belt slipping or the edges being worn thin."

Jiang Hui had just finished speaking when Liu Darui next to him couldn't help but say, "Some time ago, before a belt was replaced on a BJ212 operated by the factory, this kind of screaming sound was indeed heard. It was very harsh to the ear." Once what others say is consistent with your own experience or cognition, that level of trust will immediately rise to a higher level.

Obviously, what Jiang Hui said now made Liu Darui very convinced.

"When I stepped on the accelerator hard, I heard a slight tapping sound from the engine direction, or a beeping sound. The sound was not particularly loud, but it continued. However, it stopped after I stopped the car."

"Such a noise is generally caused by a lack of oil in the engine or the oil filter has not been replaced for a long time, resulting in uneven valve clearance."

"The situation of our several faulty vehicles is almost the same, so I said there is a problem with the oil pump."

Although it has not been finally confirmed whether the oil pump is really the problem, Jiang Hui's explanation is so logical that many people are still convinced.

"Excuse me……"

Liu Darui was still thinking about asking if there were any other situations, but at this moment he suddenly realized that the person in front of him was unfamiliar and he had never seen him before.

Liao Chengwen beside him immediately chimed in, "This is a new college student who joined our technical department this year. His last name is Jiang Minghui, and his professional knowledge is the first in the automotive engineering major of Capital Institute of Technology."

"I originally thought he only had a wealth of theoretical knowledge, but I didn't expect he also had a lot of practical experience."

Although he didn't solve the problem himself, Jiang Hui is also from the technical department. If he solved the problem, it would also be the credit of the technical department.

"Xiao... Engineer Jiang, besides the three situations you just mentioned, are there any other situations for abnormal engine noises?"

Liu Darui immediately asked a follow-up question.

At this time, he was no longer in a hurry to confirm whether those cars really had oil pump problems. He wanted to gain the important experience first.

"Naturally there is."

Now that I've already started talking about it, I might as well say more and conquer everyone at once.

"If there is a slight hissing sound from the engine, many people think that this hissing sound is the sound of air blowing."

"Some people may think it is their own illusion, or that careless people simply don't pay attention to such noises."

"If the sound is confirmed to exist, then we need to consider whether it is a broken vacuum tube or vacuum leak that causes engine loss and inefficiency."

"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 the focus.

Dozens of people gathered there listening to me explain the analysis of abnormal engine noise.

"The last one is the sound of a heavy hammer hitting metal on the engine side, accompanied by some engine vibrations."

"The best thing to do at this time is to take the car to a repair shop and disassemble it for a thorough check. Generally, this kind of detonation means that there is a major problem with some parts of the engine."

"The most common ones are the five I just mentioned. If you listen to them a few times, you can recognize them."

Seeing Jiang Hui finished his explanation, Liu Darui couldn't help but lead the applause.

This is really meaningful for their vehicle quality department.

"Xiao Jiang, you just said that the oil pumps of these broken-down cars had problems."

"So how can we prove that it is indeed the oil pump that is the problem?"

Liao Chengwen is very satisfied with the current situation. The technical department has made a great contribution today!
However, he was also afraid of accidents, so he wanted to confirm the situation thoroughly.

That way the problem would be solved perfectly.

(End of this chapter)