Siheyuan: Heavy Industry Revitalizes the Country

By the time the design work for the body structure and chassis was completed, more than a week had passed.

This is when Fang wanted to have the entire team help him draw the repetitive parts.

Otherwise, it would probably take him half a month to finish the painting alone.

After the drawings were completed, they were immediately handed over to Professor Xu for review.

After looking at the drawings, Professor Xu couldn't help but applaud.

I was shocked by the optimization projects Fang Xiang had made on the chassis.

They seem to be small details.

But all these details come from experience 50 years later.

After decades of experience, the Wrangler has almost reached the pinnacle of off-roading.

How could it not completely crush this era?

But even in Fang Xiang's hands, it was simplified again and again.

This new chassis also surpassed the entire era.

It would not be an exaggeration to say that we are even 10 years ahead of the world's automotive industry.

If it weren't for cost considerations.

It can be further enhanced.

With Professor Xu's approval, the body structure and chassis were also sent to Wu Xu and Guan Ningyuan.

They will be responsible for the subsequent docking work with the BAIC Manufacturing Plant.

Turn drawings into reality.

Fang Xiang then started the next stage of work.

The core component of the vehicle, the engine.

The engine used by 212 is a copy of Volga's inline four-cylinder engine.

Although it has been optimized domestically, it has increased from 51.5kw to 57.4kw.

But Fang Xiang still looks down on this engine.

Because in Fang Xiang's opinion, this engine has no more potential to be tapped.

Instead of spending a lot of effort on optimization and upgrading, it would be easier to just copy a new engine.

After careful consideration, Fang Xiang felt.

I have worked on three types of engines: Dongfanghong tractor, Hongqi car and Jiefang truck.

He designed a brand new engine himself, so the impact should not be too great.

Even if it will surprise people, I think it can be controlled within a certain range.

Thus, a new 2.0L inline four-cylinder four-stroke 2-valve engine began to be born under Fang Xiang's hands.

It uses an OHV bottom-mounted camshaft design.

This design is very suitable for off-road performance that requires low torque burst.

The thermal efficiency has been directly increased from the current 10% to 25%.

This is still a compromise made taking into account domestic material technology and assembly technology.

Otherwise, it can be increased to 35% or even higher in one step.

The direct manifestation of improved thermal efficiency is a significant improvement in power performance and a significant reduction in fuel consumption.

It is also equipped with a dual carburetor configuration.

It soared from the original 57.4kw to 75kw.

Horsepower increased from 75 to 101.

The torque increases from 171Nm to 230Nm.

When the final version was finalized, Fang Xiang calculated and found that this engine was still underestimated.

If only better materials, precision and craftsmanship could be used.

With just a little bit of improvement, the horsepower can easily reach 123.

The torque can also reach 265kw.

Unfortunately, this is the best that can be achieved in China at present.

After the engine is completed, the only big piece left is the gearbox.

Logically speaking, there will be no problem if the gearbox is not changed.

It's nothing more than the efficiency of the engine, with a 85% discount.

But it is still far superior to the old BJ492QA.

But looking at this backward three-speed gearbox, I really want to try it.

In order to meet Mr. Zhou.

Fang Xiang decided to design a new four-speed manual transmission.

Besides, what a coincidence.

Fang Xiang once watched a video.

A big guy assembled a five-speed manual transmission using Lego.

Fang Xiang was amazed at that time.

And following the recommended video, it shows a science and engineering guy manually tinkering with a five-speed manual transmission and a V8 engine.

Finally, the engine and gearbox are matched together.

However, the gear ratios were not revealed.

Therefore, Fang Xiang could only roughly estimate that the first gear was 2.8, the second gear was 1.5, the third gear was 1.0, and the fourth gear was 0.7.

Then I drew a diagram of the gearbox from memory.

Fang Xiang really had no idea how well it matched the engine.

We can only leave the later work to more professional people.

At this point, the new 'Wrangler' has been fully designed.

It was already early April, and more than a month had passed since Fang wanted to boast.

Looking at the drawings stacked up to his waist, they were more than one meter high.

Fang Xiang finally let go of the breath he had been holding.

Fortunately, most of the work is done by improving and modifying 212.

And there is help from team members.

Without 212 and Wrangler as reference, and the help of the group members.

Then it will take at least two to three months to get started.

It may be an exaggeration to say that I have been working day and night for more than a month.

But basically, the working hours every day exceed 10 hours.

It is a completely closed job with no interaction with the outside world.

Apart from Professor Xu and the three cooperating groups, Fang Xiang had very little communication with his roommates.

Only Ji Pengwei knew that Fang Xiang fell asleep as soon as he came home every day.

Participating in a confidential task with tight time and heavy tasks.

Through Ji Pengwei, Wei Shengli, Liu Shuying, Yin Qingqiu and others came to see him many times.

That’s why I didn’t treat Fang Xiang as a missing person.

“Professor, all the drawings have been completed.

The only problem now is the fumbling four-speed manual transmission.

Not sure how it matches the engine.

This may require outside help.”

Looking at the drawings that had been classified and bound, Fang Xiang made a report to Professor Xu.

“Well, I already guessed it.

Ever since the day I saw the new engine you designed.

You didn't tell me you were done with the gearbox. "

Professor Xu smiled happily.

"Will there be any problems? There is no reference for this."

Fang Xiang scratched his head.

“Don’t worry about it, just make it first.

As for gear ratios and matching, I know someone who does.

Also, you forgot the prototype of Hongqi CA72.

It's the Mercedes-Benz 190, and it uses a 4-speed manual transmission.

How come there is no reference object?

So, don't worry. "

Professor Xu waved his hand.

"So, when will our prototype be assembled?"

When Fang Xiang heard Professor Xu mention Mercedes-Benz and Hongqi, he immediately felt relieved.

“All other parts have been produced.

Even the engine is being tested now and there are no issues.

The only thing missing is the gearbox. It will only take a few days to produce it.

But because it is the first time to assemble and install it.

It may take some time, probably 7 to 10 days.”

As soon as Professor Xu said it would only take 7 to 10 days, Fang Xiang immediately became excited.

"That means we can definitely start the test run before the 20th?"

"Why, do you still remember your military order?"

As soon as Professor Xu heard it, he knew what Fang Xiang was thinking.

"Of course I will. I have already given you a military order, so I cannot go back on my word."

Fang Xiang scratched his head.

"Don't worry, take a rest first.

Look at you, you have been busy for more than a month without any rest.

After the test run, it will be sent for testing.

But I have good news.

Do you want to listen to it?"

Professor Xu began to whet Fang Xiang's appetite again.

"What's the good news?

Now for me, the best news is that this new car can be successfully ignited and tested.

It would be even better if I could drive a few laps.”

Fang Xiang curled his lips. Professor Xu is so old and yet he still plays this trick.

“Hahahahaha, don’t worry, I will definitely let you do it when the time comes.

I'm afraid this good news will keep you awake at night."

Professor Xu immediately agreed to Fang Xiang's idea of ​​test driving the car.

"You really want me to get started?

I'll take note of that, please don't lie to me!

So, what is the good news?"

Fang Xiang was finally satisfied when he heard that he could drive the car he designed himself.

"The First Ministry of Machine Building knows that you are designing a new Jeep.

I also saw your drawings through BAIC.

They were so impressed by your design that they asked me to ask you about it.

Are you interested in seeing the design of the new Hongqi? "

At this moment, Professor Xu suddenly dropped an explosive piece of news.