Isn't it normal to have iron filings in the engine oil? The engine needs to be run-in. During normal operation, the engine will continue to produce iron filings from the inside due to the reciprocating movement of the piston. What's the matter
necessary?
Everyone was digesting the meaning of Mia's words, and at the same time, they were also considering the other party's purpose. Doesn't the other party want their Deutz diesel engine to be equipped on their Mercedes-Benz heavy truck?
This engine has been widely used in military vehicles. Whether it is an armored vehicle or a military heavy truck, it can receive unanimous praise. The drag heads of Hanyang Factory also use this kind of engine. The same heavy truck has never been heard of by others.
What do you complain about is that the engine is not worn and there are too many iron filings in the engine oil.
If you change the engine oil once, you will solve everything? Is it difficult to force people like this?
This woman must be here to find fault!
In this era, many people will talk about a word of running-in. Even in 2020, those so-called veteran drivers will also talk about the word "run-in".
When the new car comes back, it needs to be run-in. After the run-in, it needs to be pulled up the highway! Otherwise, the car will not be able to run in the future.
If it is in the era of manual transmission, it is understandable to pull the highway. If I go to the third gear of the car with five gears, I can also rush to more than 100 kilometers per hour after stepping on the accelerator for 5,000 rpm. At this time,
The engine is running at high speed to achieve what the old drivers call running-in.
However, most of the cars in later generations were automatic transmissions, and they ran according to the standard of 12, and many cars even had two thousand rpm.
What is your purpose of pulling the highway? Should you raise the engine speed or drive the vehicle speed?
This is a completely false proposition.
The so-called running-in is just to make the rough surface of the engine and gearbox various components during processing smoothly and achieve an ideal operating state. In fact, with the manufacturing technology of the engine, gearbox, etc.
Progress has actually reached its best condition before leaving the factory. The experience of many veteran drivers and masters is no longer suitable for the development of the times.
(I sighed again about the thing I said before. The sound of the chassis of the Harvard H8 has bothered the researchers for several years. In the end, it had no choice but to replace it with the axle produced by ZF. As a result, the sound of the chassis was not striking.
After running tens of thousands of kilometers, I found that there was no iron slag. I produced it from my own supporting factory for ten thousand kilometers, and there was a lot of iron slag.)
Now, domestic industry is still at the level of the 1950s and 1960s. According to the technical standards of that era, it can no longer keep up with the development of the times.
Now, looking at the expressions of these people, Qin Zhenhua knew what kind of doubts they were in their hearts. In fact, when he got the data of Mercedes-Benz diesel engines, Qin Zhenhua was actually shocked.
"The original imported Mercedes-Benz engine can get such data in bench test drives." Qin Zhenhua said: "And, the original imported Mercedes-Benz engine has now been upgraded to the standard of changing oil once every 40,000 kilometers."
"How many?" Zhuang Zicheng raised his head in surprise and looked at Qin Zhenhua, as if he was listening to a fantasy.
"In Europe, 40,000 kilometers, or 50,000 kilometers have been promoted. However, the quality of diesel in the Eastern powers is not good, especially the sulfur content is relatively high, so we may lower the oil change interval to 30,000,000.
For harsh environments such as frequent trips to coal mines, it may be reduced to 20,000 kilometers."
Even so, the oil change cycles of diesel engines produced in China are much more apart!
In order to ensure the engine running well, domestic cars have to change the oil once at most 10,000 kilometers. The oil and iron filings that are replaced are quite a lot. Now, the engines of other people can run to 40,000.
Or change the oil once every 50,000 kilometers, which is simply incredible!
"According to the company's plan, in the 1990s, we will strive to make this standard reach 100,000 kilometers." Mia said: "After all, we know that for users, the longer the oil change cycle, the more economic benefits they will be
The higher the.”
In later generations, heavy trucks that changed oil for 100,000 kilometers were everywhere. Although some drivers were confused and afraid of breaking the engine, they quickly replaced the engine oil by 60,000 or 80,000, but in comparison,
That's already pretty good too.
Heavy trucks are used for long-distance transportation. One trip can take at least four or five hundred kilometers, one or two thousand kilometers, two or three thousand kilometers. If you change the engine oil every 10,000 kilometers, it means that every four or five trips will be taken.
You have to change the oil once, one month, two or three times, and each time it takes half a day. Of course, this makes the driver unhappy, after all, time is money.
Now, it increases to 40,000 kilometers, which means changing the engine oil only once a month. If you can't even run for 40,000 kilometers a month, then the car will have no economic benefits.
Maybe people who have cars at home have to scold me. Why did our cars change the oil every 5,000 or 10,000 kilometers? Prodigal businessmen, prodigal businessmen!
This is mainly because the car runs a short mileage, and heavy trucks can run tens of thousands of kilometers in a month. It is normal for cars to run 10,000 yuan a year, and there are even fewer ones. The best time for motor oil is only three months
That's it, over time, it will oxidize, so it makes sense for people to change the engine oil once every six months.
If the Deutz engine is used in a military vehicle, the army does not care about these details. The army does not care about fuel consumption or maintenance intervals. However, civilian heavy trucks are not good, and these are the ones that care about the most.
Therefore, if you plan to assemble the Deutz diesel engine onto a Mercedes-Benz heavy truck, these problems must be solved. You think the reliability is already very good, but in fact, it is still not enough!
Put the oil change cycle aside, at least, the engine's experimental time must be guaranteed!
"This, we may not..." Ye Qiming wanted to say, we may not be able to do it. The original Deuts diesel engine is probably in trouble.
To assemble Mercedes-Benz heavy trucks, it must rise to the highest level. How is this possible?
"We need to buy new equipment," said Qin Zhenhua: "Especially the engine precision grinding equipment, if the smoothness inside the cylinder is increased by an order of magnitude, it is still possible to achieve the level they require."
It is absolutely impossible to use existing equipment. The only solution is to purchase new equipment!