Zhou Jingming, who was sitting in the study, frowned, and the scratch paper placed on the table was not written word for word, the reason why he paid so much attention to lightweight, not only for the automobile development summit that would start in a few days, this summit just reminded Zhou Jingming that Tianming Group should indeed pay attention to the indicator of "lightweight" in the follow-up vehicle development process.

It is better to prepare early than to take passive measures in the future, after all, the initiative is in your own hands at that time, and Tianming Company does not need to panic.

After some thought, Zhou Jingming classified the main parts of the car according to the system on the scratch paper, and listed them all on the paper, about five minutes later, Zhou Jingming's eyes showed a complete distribution map of auto parts assembly, from the driving system, to the power transmission system, to the braking system, etc., what main parts are included under each system, Zhou Jingming also roughly listed.

After carefully looking at the distribution of the listed system parts, Zhou Jingming finally locked on the three goals of the drivetrain, the body and the frame.

Lightweight is not proposed for a certain part of the car, but from the overall consideration of the car, as long as the performance and strength of the parts can be guaranteed, all the parts of the car can be lightweight designed.

The three goals that Zhou Jingming just circled out are the three heaviest assemblies of the whole car, needless to say the power transmission system, whether it is the engine, or the gearbox and the front and rear axles and other assemblies, each component accounts for a very high proportion of the vehicle mass, if you can think about the power transmission system, it can indeed provide a lot of ideas for lightweight design.

But in the end, after careful thinking, Zhou Jingming drew a cross on the drivetrain. Although the powertrain has a lot of room for operation, whether it is the engine or the gearbox, the manufacturing process is too complicated, and a slight change may not be possible with the current level of technology, so at this stage, Zhou Jingming does not want to think about the gearbox and the engine.

In this way, after the drivetrain is removed, only the body and the frame are left.

"The body...... The frame ......" Zhou Jingming looked at the names of these two assemblies on the paper, and suddenly his pupils shrank, and the body and frame seemed to be designed together!

The answer is already coming out, the load-bearing body!

The so-called load-bearing body is to cancel the frame, and the engine and major assembly parts of the chassis originally installed on the frame are installed on the body, and the body replaces the original frame, which has the role of the frame and bears all the loads of the vehicle.

If the load-bearing body is used, all the mass of the frame can be omitted, and the load-bearing body is generally welded with thin plates, which can reduce the quality of the body to a certain extent.

Not only that, compared with the non-load-bearing body, the load-bearing body can be directly welded by spot welding because of the processing of a thin plate, which is easier to mass-produce, and because of the reduction of quality, the overall bending and torsional rigidity of the vehicle will also be improved.

On the other hand, in the vehicle mass, the body accounts for about 30 percent of the vehicle mass, and in the case of no load, there is 70 percent of the fuel consumption, which is used in the body quality, if the load-bearing body can be used, it is very useful to reduce the fuel consumption of the vehicle.

All in all, compared with the non-load-bearing body, the load-bearing body has many advantages, and with the development of the automobile industry, in the car, the load-bearing body will gradually replace the non-load-bearing body, which is also an irreversible development trend.

At present, all four models of Tianming Automobile Company, Phoenix brand sedan, Kirin sedan, Xiaofuwa sedan and Yixuan SUV just launched this year, all use non-load-bearing bodies, since Zhou Jingming is determined to engage in car lightweight, then start from this upcoming development of luxury cars, all use load-bearing bodies!

Thinking of this, Zhou Jingming circled the two parts of the body and frame on the paper together, and then wrote the words "load-bearing body" on the side.

After doing all this, Zhou Jingming put the focus of lightweight thinking on the consideration of the load-bearing body.

The next day, after Zhou Jingming came to the office, he asked the secretary to find Zhao Ke over, ready to discuss with him about the lightweight of the body.

"Chairman, you're looking for me. After knocking on the door and coming in, Zhao Ke asked with a smile.

"Senior brother. Do you know a lot about our company's welding workshop?" Zhou Jingming motioned for him to sit down, then looked at Zhao Ke and asked.

After all, Zhao Ke used to be the director of the company's vehicle factory, and the four major workshops of stamping, welding and coating should know each other.

"I know a lot about the process and equipment of the welding workshop, what do you want to know about it, chairman?" Zhao Ke asked.

"I was going to start with the next car with a load-bearing body and eliminate the frame, so I wanted to see how well this design would work, whether the equipment in the welding shop would be ready for immediate use, or whether the production line would need to be improved accordingly. Zhou Jingming threw his question to Zhao Ke.

"Load-bearing body?" Zhao Ke was stunned for a moment, and then asked with some curiosity, "Why did you suddenly remember to engage in a load-bearing body?"

For this kind of body, Zhao Ke naturally understands, but at this time, the application range of the load-bearing body is not wide, and the vast majority of automobile manufacturers still use the form of non-load-bearing body and frame to design and assemble the vehicle.

"I wanted to promote the design concept of lightweight cars within the group, and I thought about it for a long time last night, and it is easiest to start with the body aspect. Zhou Jingming explained with a smile.

"Lightweight design is indeed the development trend of the automotive industry, the theme of this year's International Automotive Development Summit, it seems to be lightweight, the chairman of the board of directors at this time put forward the concept of lightweight design, and this summit is related. ”

Zhou Jingming nodded, "The last time I went to Yanjing, Minister Li mentioned this matter to me, and after I came back, I thought about it and felt that the matter of lightweight should not be delayed any longer." ”

"Affected by the rise in oil prices, energy conservation and emission reduction has indeed become the hottest word in the international automobile industry in recent years, lightweight can fundamentally reduce the fuel consumption of automobiles, it is indeed worth promoting in the company, as for the chairman of the board of directors you just said that the load-bearing body, with my understanding of the welding workshop process, it is not difficult to implement, even if the production line needs to be transformed, the scope of change is very small. Zhao Ke thought for a moment and replied seriously.

Whether it is a load-bearing body or a non-load-bearing body, the welding process will not be much different, as long as the process does not change, the equipment of the welding workshop does not need to make much change.

Zhou Jingming nodded seriously, and then looked at Zhao Ke again, "Since the load-bearing body can be carried out, then I still have a very bold idea, I don't know if the welding workshop can implement it?"

"Chairman, what do you mean?"

"Engage in an all-aluminum body, ASF all-aluminum body!" Zhou Jingming looked at Zhao Ke and said with burning eyes.

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