The north wind was blowing, and Jiang Yan, who had just come out of the downstairs, was shivering.

When Jiang Yan came to the experimental workshop, Deputy Director Yang and several workshop directors and technical masters were already waiting.

"I've only drawn part of this drawing, which contains drawings of diesel engines, which are all broken down drawings of equipment."

"Okay, good, Mr. Jiang has worked hard,"

Deputy Director Yang took the drawings in Jiang Yan's hand and looked at them, looking excited.

"Are you going to work the night shift tonight?" Jiang Yan asked.

"On the night shift, I said hello to the workers, and I will make them overnight tonight, otherwise I will be uneasy."

"The logistics have also arranged for supper, and Comrade He Yuzhu will do it himself."

Director Li, who was next to Deputy Director Yang, also interjected.

Hearing this, Jiang Yan nodded, and when he came, he guessed that if nothing else, it was estimated that he would have to work all night tonight.

"The materials for the engine are ready!"

Jiang Yan asked Deputy Director Yang.

"Ready, Secretary Wang and Director Zhang have made more than a dozen copies with their own ways."

"That's okay, you will distribute the drawings according to the type of work in a while, and I will take the workers to do the cylinders of the diesel engine."

"By the way, I have also written the materials and requirements on the drawings, there are more gear parts, our machine can only be rough-processed, and it is estimated that the fitter will have to work hard."

"It doesn't matter, all the fitters above level 4 in our factory are on standby in the workshop next door, and Director Li will go over to keep an eye when the time comes."

Hearing that Deputy Director Yang had made arrangements, Jiang Yan's heart finally relaxed.

Then Deputy Director Yang called some workers over and began to distribute the drawings.

"Deputy factory director Yang divided the workers into a group according to different types of work, and temporarily appointed some people as team leaders."

Director Li next to him explained to Jiang Yan in a whisper.

Each temporary team leader got his own drawings and began to organize workers to produce, and the machine tools in the experimental workshop that had been silent for a day roared.

And Jiang Yan took the drawings of the cylinder and organized the workers to start production.

Due to the previous experience in the production of automobile engines, this time the command of the workers was orderly, in order to catch up with the schedule, Jiang Yan here to do the mold is basically a sixth-level worker, when forging the burr, Liu Haizhong also personally went into battle.

The mold manufacturing went quite smoothly, and after the sand mold was made, it began to water again, and after everything was completed, Jiang Yan came to the side of Deputy Director Yang.

"The cylinders have been poured, the next thing is to wait for cooling, and then the processing, and I have already arranged the rest of the things."

Hearing Jiang Yan's report, Deputy Director Yang nodded, and said that he had worked hard and was silent.

Jiang Yan waited for less than two minutes, and the parts began to be delivered to Jiang Yan one after another.

Jiang Yan glanced at the parts sent over, these parts are basically the parts of the corn thresher and the human seeder, these parts are not difficult, and the processing is naturally fast.

Seeing these parts, Jiang Yan instructed the technicians of the technical department to start assembling the tested parts.

"Okay," Hearing the voice of the technician, Jiang Yan and Deputy Director Yang turned their heads at the same time, and a corn thresher appeared in front of the two people.

"Let's put it aside!" Jiang Yan lost interest in this thing at a glance, but he still commanded the technician.

The technician takes the assembled corn thresher to the right side of the workshop against the wall.

During this period, corn threshers, manpower seeders, these are put in a row where they are assembled.

Seeing these manpower and machinery, all the leaders went up to take a look, and felt that it was okay. Workers are arranged to put these things in the warehouse and wait for tomorrow's inspection.

And all the leaders' minds are once again put on where the diesel engine is, which is the most important thing.

"Mr. Jiang, the parts of the diesel engine are out." He accepted the technician Xiao Zhang and came to Jiang Yan with the parts he knew, and handed them to Jiang Yan like an ordinary treasure.

"Measure it up." Deputy Director Yang instructed the technician with excitement on his face.

Hearing the instructions of Deputy Director Yang, Xiao Zhang took out the test power and began to test the parts that had just been made.

"The size and design drawings have been consistent, and the product is qualified."

After the test, Xiao Zhang reported loudly to Jiang Yan and Deputy Director Yang.

"Good, good, good start, really good start."

Starting from this part, the parts for making diesel engines were sent over one after another, and Jiang Yan instructed technicians to start testing these parts.

"This crankshaft is good, almost perfect, even with a machine, it is difficult to make such a color." Jiang Yan took a crankshaft that had just been tested and exclaimed.

The surface of this crankshaft is very smooth, and there is not a single burr in the grinding, so it is not an exaggeration to say that it is a handicraft.

Hearing Jiang Yan's praise, Wu Feike, the director of the third workshop who helped with the inventory and classification next to Jiang Yan, was happy to blossom, and the crankshaft parts were all things that their team was responsible for complete.

"Xiao Jiang, isn't the crankshaft of our diesel engine a little long, I have seen the crankshaft of a car engine, it is very short!"

Yes, hearing the question of Deputy Director Yang, Jiang Yan knew that this was half a layman, and he was most afraid of this kind of leader who seemed to understand what he didn't understand.

However, Jiang Yan still patiently explained: "Generally speaking, the crankshaft size of the diesel engine is larger than that of the gasoline engine of the same displacement, this is because the compression of the diesel engine is relatively high, and a larger crankshaft is needed to withstand greater pressure and torque. ”

After Jiang Yan finished saying this, he stopped and glanced at the thoughtful Deputy Director Yang before speaking.

"The working cycle of a gasoline engine is an ignition cycle, and the size of the crankshaft is relatively small. In addition, the size of the crankshaft is also affected by the speed and power of the engine. High-power and high-rpm engines require a larger crankshaft to withstand greater loads and vibrations. ”

"That is to say, the speed of the gasoline engine affects the speed, and in layman's terms, he does not have much strength, but he runs very fast."

In his previous life, Jiang Yan knew that the fastest F1 car in the world could reach more than 20,000 rpm, but the world's strongest diesel engine was less than 120 rpm.

In fact, more than 90 percent of the world's tanks, submarines and large surface warships use diesel engines.

Jiang Yan's design is barely a micro engine. The power is far worse than the tractors produced later, but it is quite enough for this era in China.

"Xiao Jiang, you mean they can't run fast, but they can pull more goods, right!"

"Director Yang" is no problem to understand it this way, our walk-behind tractor is rated at one ton, but if you pull twice as much, it is estimated that it can run, but the speed is a little slower. ”

"As I said, we were originally a machine invented for ploughing, why did you let them run so fast when ploughing the land!"

"Yes, yes, Xiao Jiang, you are right, the main responsibility of the walk-behind tractor is to plough the land, and the transportation is incidental, but it doesn't need to be so fast, not needed."

Don't look at Deputy Director Yang who suddenly realized, Jiang Yan estimated that he listened to his own explanation and knew only half-understood, which may be to remember the relationship between the speed and the strength of the speed.

(End of chapter)