Reborn in 1982: I Became the Richest Man by Repairing Cars

Seeing this, Zhou Ming quickly smoothed things over, saying with a smile, "Yes, yes, Teacher Jiang is right, it's about exchanging ideas and learning from each other's strengths!"

"If we listen to the ideas of young people, we might be able to solve the problems we encounter when repairing cars."

"From now on, we can solve those difficult problems ourselves and won't have to ask others for help anymore."

As he spoke, he urged everyone to find a place to sit down. The conditions in the workshop are basic; there are no decent tables or chairs.

"Everyone just find a toolbox or a clean wooden board to sit down."

"Listen carefully to Teacher Jiang's lecture, and ask questions anytime if you don't understand something!"

Jiang Hui glanced around the workshop—it was indeed rudimentary.

The ground was covered with oil stains and iron filings, and various parts, wrenches, and screwdrivers were piled up in the corner.

There were also several worn-out toolboxes with yellowed labels that listed the names of the parts.

Several dim light bulbs hung on the roof of the workshop. The light wasn't very good, but it was enough to see everything clearly.

Jiang Hui, however, didn't care.

Explaining directly to the actual objects, instead of reading from a book, is actually more effective, and the masters can understand and accept it more easily.

The workers found places to sit down, and Jiang Hui walked over to a CA10 engine in the workshop.

"Let's start by talking about the engine of the CA10 truck today."

"It is a six-cylinder, four-stroke gasoline engine with a displacement of 5.6 liters and a maximum power of 90 horsepower."

"Don't be fooled by its large size and loud noise; its core working principle is actually not complicated."

"To sum it up in four sentences: intake, compression, power, and exhaust."

"These four strokes cycle repeatedly, allowing the engine to run continuously and propel the truck."

As he spoke, he picked up a wrench and pointed to the engine's intake and exhaust valves, continuing his explanation: "Look, these are the intake and exhaust valves, respectively."

"During the intake stroke, the intake valve opens, the exhaust valve closes, and the piston moves downward, drawing the mixture of air and gasoline into the cylinder."

"Next comes the compression stroke, where both the intake and exhaust valves are closed, and the piston moves upward to compress the mixture, raising its temperature and pressure in preparation for power."

A younger master craftsman couldn't help but interject, "Master Jiang, what's the deal with the power stroke?"

"Why is the engine sometimes underpowered? Is there a problem with the power stroke?"

These days, many car repair technicians are taught by a master-apprentice system.

Theoretical knowledge about engines is often lacking.

Of course, some of the masters must have already heard of the basic knowledge that Jiang Hui mentioned.

However, some people are experiencing this for the first time.

"That's a good question! The power stroke is the key part of our engine that generates power."

"When the compression stroke ends, the spark plug will generate an electric spark, which ignites the compressed air-fuel mixture in the cylinder."

"The mixture burns and explodes, generating enormous pressure that pushes the piston downwards."

"The piston drives the crankshaft to rotate, which in turn drives the gearbox and drive shaft, ultimately causing the wheels to rotate. This is the process by which the engine converts chemical energy into mechanical energy."

As Jiang Hui spoke, he gestured for Lin Yuanwu and Fan Weimin to stand beside him and spread out the blueprints.

Explaining using drawings and actual objects will definitely be more effective.

"Finally, there is the exhaust stroke. The exhaust valve opens, the intake valve closes, and the piston moves upward to expel the exhaust gases after combustion."

"This completes the cycle, with the four strokes repeating continuously, ensuring the engine always has power output."

He paused, then added, "When we repair CA10 engines, we often encounter problems such as insufficient power, difficulty starting, and excessive fuel consumption, most of which are related to these four strokes."

"For example, if the intake valve is blocked, there will be insufficient air intake, and the air-fuel mixture will not burn completely, resulting in insufficient power."

"When the spark plugs are worn out, ignition becomes difficult, and the power stroke cannot proceed normally."

"If the exhaust valve is not sealed properly, the exhaust gas will not be completely discharged, which will affect the next intake stroke."

"These are details that we often overlook."

The old master craftsman who had spoken earlier nodded thoughtfully, his tone less defiant and more appreciative: "Young man, now that you mention it, I understand a bit better."

"In the past, when we repaired engines, we would just replace the part that was broken."

"I've never thought about the relationship between these four strokes so systematically before. Sometimes, even after I've fixed it, problems still arise. It turns out I haven't found the root cause."

"The old master is right."

Jiang Hui responded with a smile, picked up the socket wrench next to him, and said, "Just explaining the principle might still be a bit abstract for everyone, so let's take apart the actual parts and completely disassemble the engine of this CA10."

"Let's look at the function of each component one by one, and see how each component works together during the four strokes of intake, compression, power, and exhaust."

"After we disassemble it, we'll put it back together. That way, if anyone encounters a problem in the future, they'll be able to immediately identify which part is causing the issue."

Zhou Ming quickly stepped forward and handed over a pair of clean gloves: "Teacher Jiang, thank you for your hard work. All the tools have been prepared for you."

"Master craftsmen, gather around and watch carefully how Master Jiang Hui disassembles it. Feel free to ask any questions you may have!"

Zhou Ming had no intention of leaving today and planned to listen to Jiang Hui's lecture for the entire time.

Jiang Hui put on gloves, gripped the socket wrench, aligned it with the fixing bolts on the engine block, and slowly applied force.

While tightening the bolts, he explained to the mechanics who gathered around: "Before disassembling the engine, we must first make clear marks. We need to remember the location of each bolt and the installation direction of each component."

"Otherwise, if you can't put it back together after disassembling, or if you put it in the wrong place, the engine will be ruined."

"Let's start by removing the cylinder head bolts. There are 12 cylinder head bolts on the CA10. We need to loosen them evenly in a diagonal sequence."

"You can't loosen one cylinder at a time, otherwise the cylinder head will deform, the seal will be poor, and it will leak oil and air later."

Although some of the things Jiang Hui said were already known to everyone.

However, a systematic introduction, along with an explanation of the reasons for doing so, is relatively rare.

It's like removing bolts. Many experienced workers know they should remove them diagonally, but they don't explain to their apprentices why they should do it that way.

It's simply demanding that people do what you say.

Soon, the masters all crowded around, their eyes fixed on Jiang Hui's movements.

Some of the younger instructors even took out their notebooks and carefully took notes of the key points.

The foreman, who had been somewhat unconvinced, now put aside his disdain and carefully watched Jiang Hui's bolt-tightening techniques and marking methods, afraid of missing any detail.

Jiang Hui unscrewed the first cylinder head bolt, placed it on a tray that had been prepared in advance, and marked it.