Everyone looked at each other.

Isn't it normal to have iron filings in the oil? In the process of normal operation, the engine will also be due to the reciprocating motion of the piston, and there are constantly iron filings generated from it, this, what is necessary?

The big guys are digesting the meaning of Mia's words, and at the same time, they are also thinking about the other party's purpose, doesn't the other party want their own Deutz diesel engine to be assembled on their Mercedes-Benz heavy truck?

This engine has been widely used in military vehicles, whether it is an armored car, or a military heavy truck, that can get unanimous praise, Hanyang factory tractor, also used this kind of engine, the same heavy truck, never heard people complain about what said that the wear of the engine is not good, too many iron filings in the oil.

5,000 kilometers, or 10,000 kilometers, change the engine oil once, and don't you solve everything? Is it difficult to use such a strong man?

This woman must have come to find fault!

In this era, many people will say a run-in word, and even in 2020, those so-called old drivers will also put the word run-in on their lips.

When the new car comes back, it has to be run-in, and when the run-in is over, it has to pull the high speed! Otherwise, the car will not be able to run in the future.

If it is in the era of manual transmission, pulling high speed can also be understood, five gears of the car, I will hang up the third gear, the accelerator pedal to 5,000 rpm, can also rush to more than 100 kilometers per hour, at this time, the engine through the high-speed operation, to achieve the so-called run-in in the mouth of these old drivers.

However, most of the sedans of later generations are automatic, and they run according to the standard of 12, and many cars can't even get on 2,000 rpm.

What purpose are you pulling the highway? Do you increase the engine speed, or do you increase the speed of the vehicle?

This is a completely false proposition.

The so-called running-in is just to make the rough surface of the engine and gearbox smooth during processing to achieve the ideal operating state. In fact, with the progress of engines, gearboxes, etc. in manufacturing technology, in fact, before leaving the factory, it has reached the best state, and the experience of many old drivers and masters is no longer suitable for the development of the times.

(Sigh about the incident mentioned earlier, the knocking sound of the chassis of the Harvard H8 has troubled the researchers for several years, and finally they have no choice but to replace it with the axle produced by ZF, as a result, the knocking sound is gone, and after running tens of thousands of kilometers, there is not a single iron slag.) Produced by its own supporting factory, 10,000 kilometers, there is a lot of iron slag. ）

Now, the domestic industry is actually still at the level of the fifties and sixties, and according to the technical standards of that era, we can no longer keep up with the development of the times.

Now, looking at the expressions of these people, Qin Zhenhua knows what kind of doubts they have in their hearts, in fact, when he got the data of the Mercedes-Benz diesel engine, Qin Zhenhua's heart was actually shocked.

"Mercedes-Benz's original imported engine, on the bench test, can get such data." Qin Zhenhua said: "Moreover, the original imported engine of Mercedes-Benz has now been raised to the standard of changing the engine oil once every 40,000 kilometers. ”

"How much?" Zhuang Zicheng raised his head in surprise and looked at Qin Zhenhua, as if he was listening to the Arabian Nights.

"In Europe, 40,000 kilometers, or 50,000 kilometers, has been promoted, but the quality of diesel in the eastern countries is not good, especially the sulfur content is relatively high, so we may reduce the oil change interval to 30,000 kilometers, and for harsh environmental conditions such as frequent coal mines, it may be reduced to 20,000 kilometers."

Even so, it is more spaced than the oil change interval of domestically produced diesel engines!

Domestic cars, in order to ensure that the engine runs well, at most 10,000 kilometers, you have to change the oil, change out of the oil, there are quite a lot of iron filings, and now, people's engines, has been able to run to 40,000, or 50,000 kilometers to change the oil, this is simply unbelievable!

"According to the company's plan, in the 90s, it will strive to make this standard reach 100,000 kilometers." "After all, we know that the longer the oil change interval for the user, the more economical it will be," says Mia. ”

In later generations, 100,000 kilometers of heavy trucks for oil change abound, although some drivers are puzzled, for fear of breaking the engine, 60,000, 80,000 will quickly change the oil, but, in comparison, that is already quite good.

Heavy trucks are engaged in long-distance transportation, run a trip, less than four or five hundred kilometers, more than one or two thousand, two or three thousand kilometers, if 10,000 kilometers to change the oil, it means that every four or five trips, you have to change the oil, a month, you have to change two or three times, each time you have to delay half a day, which of course makes the driver unhappy, after all, time is money.

Now, increasing to 40,000 kilometers means that the oil is only changed once a month, and if it can't even run 40,000 kilometers a month, then the car has no economic benefits.

Maybe the person who has a car at home has to scold his mother, how can we change the oil once every 5,000 or 10,000 kilometers in our car? Profiteers, profiteers!

This is mainly because the mileage of the car is short, and the heavy truck can run tens of thousands of kilometers in a month, while the car runs 10,000 a year is the norm, and there are even less, and the best time to use the oil is only three months, and after a long time, it is oxidized, so it makes sense for people to change the oil once every six months.

Deutz engine, if used in military vehicles, the army does not care about these details, the army does not care about fuel consumption, nor does it care about the interval of maintenance, but civilian heavy trucks are not good, the most concerned is these.

So, if you plan to assemble the Deutz diesel engine on the Mercedes-Benz heavy truck, then you have to solve these problems, you think the reliability is already very good, in fact, it is still not enough!

The oil change interval aside, at least, these experimental times of the engine must be guaranteed!

"This, we're afraid..." Ye Qiming wanted to say, I'm afraid we won't be able to do it, the original Deutz diesel engine is estimated to be enough to choke.

If you want to assemble a Mercedes-Benz heavy truck, you have to rise to the highest level, how is this possible?

"We're going to buy new equipment." Qin Zhenhua said: "Especially for the engine grinding equipment, if the smoothness of the inside of the cylinder is increased by an order of magnitude, it is still possible to achieve the degree they require." ”

It is absolutely impossible to use existing equipment, and the only solution is to purchase new equipment!

It's going to cost money.