Điều hòa nhiệt độ dành cho xe? Chia sẻ một tí về các hệ thống làm mát cho động cơ | Đường 2 Chiều

Hello everyone! It's so hot in Hanoi in the summer. The sun is burning my head. Obviously, in this weather, we need an air conditioner. At least, we need a fan to cool us down. Find the power and enjoy the cool feeling. If it's not hot, it's no good. So our car, our engine, is the same. It's hot, so it needs to be cool. However, we can't have an air conditioner to cool our car. So today, let's see how an engine can cool us down. Let's go! Just like humans, if it's too hot, there will be a lot of problems. If our engine is too hot, it may cause a situation where the oil is too hot. It does not ensure the compliance of the components in the engine. Or if it's too hot, it may damage the components in the engine. It's not good at all. That's one of the examples of how an engine can't be cooled down. That's why manufacturers are thinking about this. And of course, they have to think of ways to cool down the engine so that it can be used for a longer period of time. The most popular way to cool down an engine is to cool it down with the wind. From the name, we can see that it is cooled by the wind taken from the environment to cool the engine. Here I have a Yamaha EB125. This car uses the engine to cool it down with the wind. I won't comment on this car, I'll just talk about the engine. You can see that the head has heat dissipation wings to increase the transmission area. And this engine takes all the wind from the air and the sky to cool the engine. Especially when we move, the wind will follow the flow and go straight into the engine like this. This is also a feature that can easily identify cars that have a cooling system by the wind. In addition, in some cars, manufacturers also use the method of cooling by the wind. That is, they will put a fan in the engine to draw the wind to go straight into the engine. This method will be used in cars where the engine is placed in places where the wind cannot reach. They will use the fan to draw the wind to go into the engine to cool it down. The second method of cooling the engine is to use coolant or we call it cooling by vapor. Previously, this cooling method was only applied on cars or high-performance motorcycles. However, in recent times, small and medium-sized cars have been equipped with this technology. The principle of operation and structure will of course be more complicated. However, I will try to explain as briefly as possible. First, with the Yamaha MT-09 that I have here, we have to use coolant and this coolant is special. That is, we cannot pour normal water into it because the boiling temperature of this coolant is very high. However, if we pour normal water into it and the water boils at 100 degrees, it will not work at all. So we have to use a special coolant to pour into the car and that coolant will be carried throughout the engine. If you look at the images of the engine, you can see that there are small gaps in the cylinder head. These small gaps are the way for coolant to pass through to cool and heat the engine. After passing through the engine, the coolant will return to the cylinder head. The coolant will be cooled and heated in this part of the cylinder head. It will be a loop of the cooling system using a type of coolant. The coolant goes around the engine, goes out, cools the water, and then goes back into the engine. That explanation is probably easy to understand, right? In addition, this system will also support equipment such as fans to increase efficiency. In addition, there is another cooling method that I want to share with you, which is cooling with oil. As you know, the oil in the car will go through the entire engine and then it will flow. Manufacturers think that they will use the oil to cool the engine. That is, people will cool the oil. After that, when the oil is put into the engine, it will cool and heat the engine. Now let's talk about the advantages and disadvantages of different cooling systems. The first advantage is that it is very simple. It is not complicated, very easy to produce, saves money, and even saves weight for the car, which means the car will be lighter. Another advantage is that the car does not have complex systems, so the maintenance cost will not be low. Actually, it's just cooling with wind, but there's nothing wrong with the cooling system, right? However, there is a disadvantage, that is, the cooling system with wind will not be highly effective. Especially in the case of traffic jams, when the car does not have the wind to go into the engine, the engine will be very hot. This is not good, so this system, although it is cheap, light and simple, but its effect is not high. We can talk about the V-twin engine, for example, we will have a problem that the wind will be blocked by the front cylinder, and the rear cylinder will not receive enough wind. However, with Ducati, they use a 90-degree V-twin engine, and according to their arrangement, they can ensure that both cylinders can receive the wind into the engine. This is just one point I want to share with you. With a cooling system with a shock absorber, we will have stability, a higher efficiency than a cooling system with a wind, of course. Therefore, most of the high-performance cars on the market today use a shock absorber system. However, the disadvantage of this system is that it is complicated and costs less in the production process. Moreover, when there is a problem, it will cost less in the repair phase. I'm sure not all of you have encountered a case where the coolant is blue when driving, right? As for the oil cooling system, although it is not as effective as cooling with coolant and shock absorber, however, it also contributes to improving the effectiveness when combined with wind or shock absorber cooling. This system has the advantage of keeping the oil cool, and the oil will be kept at a certain concentration, not too hot when the temperature of the engine rises. However, there is a special point I want to share with you. As I mentioned earlier, the head of the car has heat dissipation wings to increase the heat transfer area to cool the car. Usually, cars are cooled by wind, but some cars are not like that, such as Triumph here. Triumph has used the technology of cooling by shock absorber. Here, you can see that the water block is here. However, they still made a cowhide with heat dissipation wings. Part of it is to keep the classic character of this car. And speaking of Triumph, they used the water block, but they still made an old engine like this. This is the engine of Triumph, and they made it in the shape of an old Triumph, a traditional Triumph. However, inside, it is a very modern technology. These are my recent sharings about the cooling system for the engine of our car. Of course, due to the limited time, I can't go into too much detail. I only talk about the basics of the cooling system on my car. Thank you for watching the video. If you find it interesting, don't forget to like, share and subscribe to support 2TRIO. If you have any comments, please leave them in the comment section below. Goodbye and see you again.