Decryption of the notion of "engine runoff"

The rolling shall be carried out after assembly, without exception, of the mechanisms in which the moving parts are present, and not only the automotive engines. The purpose of the test is to allow the parts to work under a small load, under conditions close to those in which they are to be located throughout the life of the engine. The friction shall be applied to each other and the related parts shall take the final form, which will change only slightly during normal wear and tear.

The new, newly-piped engine passes the first, the most important step of the run-in in the first few hours after being installed in a car. During the first launch, there is a tiling of compression and oil rings that come into contact with the cylinder wall. In the Russian language for the first stage of the engine, there is no special name, whereas in the English-speaking countries two different terms are used to indicate the initialisation of piston rings and the final runoff. The first stage is called "engine break-in", and the subsequent final round is called "engine run-in".

There is no universal instruction to enter into service. Moreover, the user does not have to do it independently-specialists at the plant, and the car comes to the buyer with the runaway engine, into which is already sunk (that is, ready to use).

However, there is a certain amount of information about the process in the free circulation process. In particular, it is known that experts from different car manufacturers have different points of view on which load-large or not-it is necessary to put the engine into operation. The difference of opinion is due, however, to the general improvement in the quality of production in recent years. The fact is that the details of the engines and the quality of the engines have improved, and the consequences of incorrect input, nevertheless, are observed from time to time. And if there is a simple mechanic on older engines, it is necessary to have deep knowledge in physics and material properties for qualified analysis of modern cases.

Engine-trimble

The user's guide, which is attached to any modern car, still contains recommendations for the final run-in of the engine. As a general rule, the point is that the engine should not be overburdened for 500 or 1,000 kilometres. However, the concept of "excess load" does not imply driving in normal regimes. In other words, the user is allowed to move in the car as he wants, avoiding only extreme situations-long-term stucts, rolling up the engine to a high speed without need, and so on. As a rule, the manuals write something like, "try not to exceed the speed limit set for traffic on the highway."

Engine rink in details

Considering that the process of putting into operation is behind us, it is nevertheless worth knowing all the details of the process. The result will be an understanding of how and why the piston rings are tiled and adjacent to the walls of the cylinder, with all possible accuracy, and on the walls themselves there are no bullies from the microscopic particles of the shavings.

By the way, the walls of the cylinder are not perfectly equal, there is a certain special incisor (hakhs) which is used to make sure that the oil is no longer dripping from the walls.

Consequently, on the rings in the process, microscopic perches also appear from the roughish walls along which they slide.

The details of the run-in process should be as follows (if you have received the car at all without mileage, which is not the case).

However, if this is the case, it is not necessary to unwind the engine in the first 5 to 10 hours. After the first launch and a trial trip, ideally, it is worth changing the oil because it contains metal particles that were diverted from the details in the process of the primary.

In modern engines with aluminium units, the rings of the rings occur faster, in fact, during the first launch in factory conditions.

Past and present run-in process

In the past, in the era of engines with iron blocks of cylinders, manufacturers ' requirements for the crunch were significantly stricter for certain reasons related to the properties of pig iron as a material. The iron is much harder than aluminum, and even a person, far from studying the properties of the materials, it is clear that the ring to the walls of cylinders not of this metal is much more complicated.

It should also be borne in mind that the quality of lubricants has significantly changed over the past two decades. Therefore, provided that the head of the block is made of aluminium and the engine is used by the manufacturer of the oil, the process of the run-in compared to the past simply has to be less painful.

Practice and Myths

We should not forget that in Russia, for example, foreign cars have become a mass phenomenon only in the last 15 years. Not surprisingly, in the nineties, when they were in demand, with poor language skills, the circumscribe conditions described in the inadvertently contained manuals were significantly distorted. Inconsistent rumours could have led to the complete confusion of the person who was the owner of the new car.

Today, car engineers are strongly recommended to treat past theories with distrust.

In addition, the developers have taken into account and have recently developed a tendency towards the car as another type of consumer goods. End-user does not want to borrow a long and tedious crunch. He wants to get a car and then check what he's capable of. If the rink was as relevant as before, the cars would have failed in the inexperienced hands "through one".

It is likely that the factory commissioning is sufficient to bring all of the trumpets into the proper shape, and the requirements for the first 500 to 1,000 kilometres will only be required to insure the manufacturer from unnecessarily sudden movements of the hottest users.




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