Why do German cars generally burn oil, and Japanese cars do not burn for 20 years? The repairman said so!
The automotive industry has a good development prospect. The contemporary people have a significant improvement in their living standards, so it is okay to buy a car at the current standard of living. The demand is large, and the types of automobiles are increasing. At present, in the automobile market share of China, the number of German brands and Japanese brands is the largest, and the contrast between Japanese and Germans has never stopped. Today we will talk about the reason why German cars generally burn engine oil, but Japanese cars have not burned for 20 years.
First of all, let us first
understand, what is burning oil? In fact, the term "burning oil" is only
a popular saying in the auto repair industry. The four-stroke engine
should not appear under normal circumstances. The so-called burning oil
refers to the piston ring that acts as a sealing function. It cannot be
normally fixed in the card slot reserved on the piston, and breaks into
the combustion chamber of the engine from the oil that causes
lubrication, because the oil can not participate. It burns, so it is
discharged into the atmosphere through the exhaust pipe.
Generally, the exhaust pipe
can see the blue smoke, which means that the oil is very powerful.
Because the oil enters the combustion chamber and participates in the
combustion, burning the oil is also one of the important reasons for
carbon deposit, because the oil is not like gasoline. It is easy to burn
off, and the carbon will cause insufficient engine power, which will
affect the performance of the car.
So why do you say that German cars burn engine oil, but Japanese cars are fine? We can look at it in two ways.
German technical experts pay more attention to technology and power, and the thermal efficiency is higher. The ideal operating temperature of the engine is between 85 and 105 degrees. If this temperature is exceeded, the damage to the high temperature and high pressure of the vehicle performance such as oil seal, seal ring and piston ring will be increased, which will reduce the service life of the engine. .
The Japanese car is based on the leather and durable angle. At the beginning of the design, the parameters of the engine are deliberately conservative, and the working temperature of the machine is also low at only 90-95 degrees! The German car's idea is just the opposite. German craftsmen are more perfectionistic. Their car-making concept is more inclined to performance first. Therefore, the German car's engine working temperature is mostly between 100-105 degrees. After entering the turbine era. The temperature is even closer to 110 degrees! So under the same conditions, we will think that the Japanese engine is more durable.
In order to ensure the
performance and durability, the German car has improved the interior of
the engine, and the cylinder wall is covered with a lot of mesh holes,
precisely because these mesh holes can store a certain amount of oil.
The piston has better lubrication performance when working up and down
in the cylinder, which naturally reduces the wear on the cylinder wall
caused by the up and down operation of the piston ring.
Therefore, whether it is turbocharged or naturally inhaled, German cars can not escape the fate of burning oil, and this burning oil is normal wear and tear.