XX！ This video actually has 567 thousand likes?
I turned it over several times and found that there were many videos similar to fried cold rice, and the conclusion was the same: "The engine lubricated with edible oil can't drive far." Doesn't that mean you didn't say anything? Many years ago, foreigners did something similar. They were very brave. They not only added cooking oil to the engine, but also let the engine burn cooking oil (instead of gasoline and diesel), and even let the oil go to see how long the engine can last. Instantly revealed several topics to Tik Tok, and 50W liked them!
Compared with the shaking audio and video without head and tail, the crooked waist is still relatively hard. After adding cooking oil to the engine, they still drove until the engine slammed off.
I'm not kidding, the engine will really explode with oil. As shown above, the whole oil pan is directly cracked. By the way, the difference between engine oil and cooking oil.
Actually, the structure of the engine is similar to that of a tourbillon watch. There are all kinds of connecting rods and rotating metal components in it. When metal directly rubs against metal, it will produce high temperature and resistance. At present, the engine speed can reach 6000 rpm at will. Think about it. If the metal directly rubs against the metal for 6000 times per minute, it will directly melt (sinter), so a special lubricating oil is needed.
The existence of engine oil in the engine is very abstract. Just like the accumulated water on Tianma road in rainy days, it hinders the direct contact between the ground tires and the road surface. Oil film strength is very important because oil physically isolates two adjacent moving metal parts. The thickness of oil film is proportional to the viscosity of oil. The more cracked the engine, the higher the viscosity of the oil. The so-called online rumor that high speed will aggravate wear and tear is to fool people who don't understand engine oil.
The engine is powered by the heat generated by burning oil, but the heat cannot be conducted directionally. For example, when boiling water, the bottom of the pot should not be scalded. The oil at the piston ring of gasoline engine leaks at the temperature of 160℃, and the temperature of diesel engine is twice as high. Then the oil must be resistant to high temperature. As we all know, water boils when it is heated to 100℃, and then slowly evaporates until it is dry.
When the oil is exposed to a higher temperature, it cannot evaporate or ignite. When we watch food programs, the chef can get angry in the cooking pot. In fact, the cooking oil vapor on the surface of the pot was ignited.
An important parameter of engine oil is called flash point, which refers to the temperature at which engine oil vapor is ignited. The flash point of this engine oil in the above picture is 222℃, and then I went to check the flash point of edible oil conveniently. Oh! My god, cooking oil is even higher than engine oil. Why does the car explode with a bang after adding cooking oil, and why do crooked people show surprised expressions? Welcome to the next issue of Into the Engine Oil.
Anyway, there are as many kinds of edible oil as engine oil, and there are several defects in general. First, the oxidation resistance is not good, which means it is easy to deteriorate at high temperature, right! The reason is the same as that the oil of fried dough sticks can't be used too many times. Deteriorated edible oil is easy to corrode the engine and produce a lot of sediment, which is a very fatal disadvantage.
In the last issue of Walking into Engine Oil, the engine with cooking oil exploded. In fact, it is also the rapid oxidation of edible oil that causes the viscosity to increase, and the oil pump can't pump out the oil, and then it disappears with a bang.
Another disadvantage of edible oil is its high viscosity. Nowadays, oil emphasizes fuel saving. If there is a kind of lubricating oil that increases fuel consumption, is there a market for this kind of oil? Another problem is that the pour point of edible oil is small. What does this mean? Lard looks no different from ordinary vegetable oil at high temperature, but it will become sticky at a slightly lower temperature, and the pour point is the lowest flowing temperature of oil. If lard solidifies, it is called freezing point. What happens if you pour a little? Low-temperature starting performance becomes worse.
From the point of view of energy, edible oil can be regenerated and degraded. You haven't heard that someone pours cooking oil indiscriminately, causing serious environmental pollution, but it won't do if you pour engine oil indiscriminately!
In addition, edible oil also has some unique advantages, such as high flash point and good volatility stability mentioned above. It is not impossible to make engine oil. On the contrary, some manufacturers have introduced bio-based engine lubricating oil. Of course, it is not 100%, but only 25% of the base oil comes from plants.
From the perspective of environmental protection, extracting base oil from plants is environmentally friendly and pollution-free, which is a development direction.
In addition to lubricating oil, biofuels, such as ethanol gasoline and biodiesel, are also used. Generally speaking, as long as the cost is lower than that of crude oil and the output is higher, there must be a market. As for why there is no large-scale promotion now, it shows that the output and cost have not been settled.
Write it at the end
Edible oil can be technically used in engines, but it can't be bought directly from supermarkets. Bio-based lubricants that can really be used in engines are also synthesized by various technologies in the later stage, which are essentially different from edible oils. However, some synthetic base oils on the market (like five kinds of ester synthetic oils) were originally extracted from organisms (plants), so the conceptual differences are minimal.
Finally, the video owners of Tik Tok and Aauto Quicker are seriously reminded that even if some oil comes from plants, it doesn't mean people can drink it. After drying this bowl of engine oil, you may get praise from 100W, but ICU doesn't need to go back!
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.