Modern 4-cylinder engines generally have four valves per cylinder, 2 intake, 2 exhaust, camshafts, and rocker arms.

And it is this seemingly simple camshaft that is the key to how much horsepower an engine can finally burst out, which can allow the engine to obtain high torque at low speeds, and can also make the engine emit more power at high speeds.

The high power means that the car is fast enough, and the torque is fast enough, which is very important for modern cars.

The VVT technology that Jin Xiaoqiang wants to experiment with today is actually to change the design of this camshaft, integrating a camshaft that controls low speed and a camshaft that controls high speed into one camshaft.

Then according to the ECU of the driving computer to control the operation of the camshaft, so as to achieve the control of valve timing, as well as the valve lift of the motion system, so that the air and gasoline to achieve the best combustion ratio, is the engine to get greater combustion efficiency, burst out more power.

However, the engine that Jin Xiaoqiang wants to test today is the civilian version of the 4G63 engine, which belongs to the SOHC configuration, that is, only one camshaft is needed on the engine.

When processing camshafts, the general camshaft is said to need a special cast iron material, such a material Jin Xiaoqiang and their factory has it, although there is a big gap with Toyota, Honda, Volkswagen used camshaft materials, but at present, it is only an experimental surname, but it is enough.

And the tools needed for machining, milling machines, drilling machines or something, their gear factories are also ready-made, although the machines used are second-hand machines bought in this book, but the accuracy is OK, and the processing of a camshaft is more than rubbing.

In terms of processing, Jin Xiaoqiang asked Liu Xiaoliang to tell the machine tool masters at home, and then the masters processed the drawings that could be brought according to Liu Xiaoliang's description.

When it was evening, a total of three camshafts had been processed, and Jin Xiaoqiang took these camshafts and measured them in his hand.

It seems that the processing is okay, because now they are only asking for it, but they have to verify his theory first, so there is no special requirement for the industry and material of these camshafts.

But if a large amount of production is required in the future, then it is necessary to standardize the process and then keep improving.

Jin Xiaoqiang and Liu Xiaoliang removed the camshaft on the original engine, replaced the machined camshaft, and then began to test the data.

In the process of engine operation, they constantly adjust the data inside the ECU, so that the trip computer can control the operation of the camshaft with the data transmitted by sensors from other parts.

This is a rather boring and boring job, in fact, Jin Xiaoqiang has the data he remembered in his previous life, but because this engine is not the one he has tinkered with in his previous life, he can only let Liu Xiaoliang slowly toss on this engine now.

Once you have verified your theory, you can start the modification, first of all, you must change the single top camshaft arrangement of SOHC to the double top camshaft arrangement of DOHC, and then follow today's procedure, modify the camshaft, conduct testing, record data, and then adjust.

Until the engine is able to adjust the timing of the valves and the stroke time to the best possible control of the valve timing in conjunction with the other data, until these data are clarified.

Then let the ECU record this data, and then it has to match it with the transmission in the power take-off part, match it with the manual transmission, and then match it with the automatic transmission, and so on.

Therefore, this series of experiments will be a rather long process, and it is impossible to complete it without a non-stop test time of about three or five months to half a year.

And such an experiment will require the investment of time and financial resources, which will be quite a headache.

But now that Liu Xiaoliang is such a technologically controlled madman, staring here, Jin Xiaoqiang is relieved.

Now he can only let him stare at this side alone, his current priority is to get money first, and get enough money before he can set up a company, then recruit people, and then help Liu Xiaoliang......

The two of them kept experimenting until more than ten o'clock in the evening, Jin Xiaoqiang glanced at Liu Xiaoliang, and saw that this guy had no intention of leaving at all, and he was still sitting there watching the various data transmitted to the computer by the ECU with relish.

There was no way, Jin Xiaoqiang could only ask someone to arrange a place for Liu Xiaoliang to live in the factory, then greeted him and went back.

In the future, he doesn't need to come here to stare at the experiment again, with a technical maniac like Liu Xiaoliang, it is estimated that it will be enough......

When Jin Xiaoqiang returned home, Jin Guozhu and Li Shulan had not come back, and they had been running the land auction outside all day today, and they had not come back yet.

Jin Xiaoqiang dealt with it indiscriminately and went to bed.

When they came together the next morning, Jin Xiaoqiang found that his mother had already prepared breakfast outside, and his father was also sitting at the table at this time and eating breakfast slowly.

Li Shulan saw Jin Xiaoqiang coming out of the room, and hurriedly brought him a bowl of porridge, Jin Xiaoqiang took the porridge and sat at the dining table and began to eat.

After just a few bites, Jin Xiaoqiang suddenly remembered the land auction, so he hurriedly asked Jin Guozhu to arrive.

"Dad, how are you doing with the land auction in Xinghe Village?"

"Well, your mom and I have been running around here yesterday, hehe! And guess what? ”

As soon as Jin Guozhu heard Jin Xiaoqiang's question, he began to explain to him, just said a few words, and couldn't help but be happy, obviously they encountered a very good thing yesterday, Jin Xiaoqiang estimated that someone should be unable to sit still, and took the lead in giving some very good conditions.

"What's the matter? Is anyone trying to make a move so soon? ”

Jin Xiaoqiang had already guessed a rough idea in his heart, but in order to cooperate with his father, he still deliberately asked out loud.

"Hehe, don't you know how much someone will pay for the land in my hand that is close to the city area, that is, the most part of Xinghe Village, which is about 2,000 acres?"

When Jin Xiaoqiang was in his previous life, he probably went to Xinghe Village to go around after this, and he knew the place that Jin Guozhu is talking about now.

That piece of land is relatively flat, and it is separated from the urban area of Nanyang City by a Daling River, so the geographical conditions can be said to be quite superior.

If you want to develop a development zone, or real estate, it will undoubtedly be a very good place, after all, it is close to the city and there is a water source around.

"How much?"

Jin Xiaoqiang was also a little whetted by his father.

"Hehe, someone directly quoted me 500 million yesterday, and they quoted me 500 million for that piece of land alone!"

As soon as Jin Guozhu mentioned the man's offer yesterday, he was a little happy in his heart, in fact, he spent about 200 million yuan to take that piece of land.

Of course, a lot of that land was originally cultivated by farmers, and in order to change the right to use the land, he spent a lot of money, plus buying land, and spent a total of no less than 200 million yuan inside and out, and now he has doubled his earnings.

"Did you agree?"

When Jin Xiaoqiang heard this offer, his heart was also fluttering, if he could buy this land, then the 500 million holes that his father borrowed from the bank to buy the land would be counted, so there was no need to worry.

"Hehe, I was also moved at the time, but I didn't promise him, I quoted 700 million at the time, but the bottom price in my heart, at least 500 million or 600 million, I plan to dry him for a day or two, and see if they will call it a little higher at that time."

Jin Guozhu is an old oilman in a shopping mall, and he still understands this method of catching and indulging.

"Hehe, it's okay, but don't delay it too long, it's best not to exceed the end of March, otherwise, I'm afraid that it will change later!"

Thinking about the upcoming [***], Jin Xiaoqiang still hopes that his father's money will be in his pocket, so as not to be delayed by [***], and if these lands are really smashed in his hands, there will be no place to cry.

"Well, I guess it's fast, they will definitely contact me again today, if they loosen their attitude today, then I will take action. My other two plots of land, now that the wind has just been released, someone is already contacting me! Hey! It seems that these people really don't know about the Xie family, we really have to hurry up, my son's father believes you this time! If the old Xie family survives by then, Dad won't blame you. ”

Jin Guozhu's words were a little sour, in fact, in his heart, he really didn't want Xie Shengli to fall, after all, if Xie Shengli was in power, the plan for the development of Xinghe Village would continue, and he could make more money.

"Hey! Dad, don't worry! My message must be absolutely accurate, and this Xie Shengli's family will not last long. ”

Jin Xiaoqiang hurriedly gave the old man another reassuring pill, so that the old man would not hesitate.

"By the way, yesterday someone from Shenhua Group came to me, saying that he wanted to exchange land with me, and he wanted to take a coal mine on their side of Xigangzi, as well as magnesium mines, and iron mines, a total of about one square kilometer of mining area, plus mining management rights, and I exchanged a piece of land in my hand, the location of that land is good, it is exactly in the center of Xinghe Village, it is estimated that even if the development zone is built, it will definitely become the center of the development zone. Am these people fools? How much is the broken mine over there in Xigangzi worth now? More than one square kilometer of mining area, all of them are sparsely populated broken mountains, or hilly land, even if it is farming, the people are not willing to go, where the ore grade is low, these people are really stupid old hats? It's annoying to think about, so I just gave them back. ”

Jin Guozhu seemed to have remembered something, and now he said to Jin Xiaoqiang a little angrily.

**********

Then I would like to give special thanks to several book friends who gave rewards, such as Fengyin, Crazy, Wzmun God, and Honolulu Leaves, and also to those book friends who only eat ants every day and vote for ants. Your support is my motivation, thank you again.