Why is the life of a diesel engine very long in theory, but shorter than that of a gasoline engine in actual life?

The working environment of the diesel engines of those previous customers was so harsh that they ran non-stop day and night. Maintenance and repairs cost tens of thousands of yuan a day. Shipments often had to be shipped by air, and they had to be put into work quickly. It is also common to encounter models from the 1980s and 1990s that are still being purchased for spare parts. It is normal for a well-maintained machine to have been used for more than ten years. Can you imagine if it is running at a speed of 120 kilometers on a loaded car, and the machine is running 10 kilometers non-stop day and night? How many years and how many miles are converted into? In the end, many machines were replaced simply because of factors such as fuel consumption and emissions.

Diesel engines look clumsy and rough on the surface, with a simple structure, but it is not easy to build well, especially the high-pressure fuel injection system, which is a core technology and requires high craftsmanship. Therefore, my country's heavy-duty diesel vehicle market has been monopolized by foreign brands for a long time, and has only made breakthroughs in recent years.

As we all know, diesel engines are almost all used in important fields that require high efficiency and high reliability in social production, such as the military, energy, mining, ships, trucks, etc. Therefore, ordinary people in our country do not have much availability of diesel, and it is impossible to develop diesel cars like Europe.

One of the reasons why our domestic diesel engines have a lower service life than gasoline engines is that the quality of our oil is not good. In Europe, if a diesel engine travels 100,000 kilometers, the diesel filter element does not need to be cleaned, but here, the diesel The filter element may not even last 40,000 kilometers, so the difference in oil quality may cause the life of our domestic diesel engines to become shorter and shorter. Besides, the theoretical long life of diesel engines is based on top-level maintenance, and ours Many friends use diesel engines very violently, which is very destructive to the diesel engine. If the maintenance is not up to date, it is normal for the service life to be shortened!

Usage is determined by the age of use

Think about it, which cars in our country are diesel vehicles? In fact, the vast majority of diesel vehicles in our country are tool vehicles, commercial vehicles, few off-road vehicles, and some high-end SUVs (the proportion of sedan diesel engines is too low)! Everyone knows that passenger car owners cherish their cars the most. , so only this type of diesel car owners can provide sufficient diesel maintenance, but their proportion is too low; as for the maintenance and maintenance of other diesel tool vehicles and commercial vehicles, it is simply not possible. Many friends who drive big cars will do it specially. Choose cheap diesel fuel (car owners will refuel the driver in advance)!

Therefore, there is a discount on the service life of the diesel engine. As for those who buy diesel off-road vehicles, which one is not considered violent? It's specially designed to travel in harsh environments. It doesn't matter, jump on sand slopes, and climb over mountains and ridges. What kind of car can withstand it? Forget about diesel engines, even gasoline engines can't withstand the torment. Which of those commercial vehicles and tool trucks are not overloaded or overloaded? Therefore, diesel engines cannot tolerate such violent treatment for a long time; therefore, most diesel engines in our lives die due to violent use and lack of care!