market dynamics
Do you know why motorcycle fuel tanks are designed this way?
Release date:2019.06.28

Excessive carbon deposits in the engine of the motorcycle may cause the valve to be closed or stuck, the engine power is reduced, the overheating, the fuel consumption is increased, etc. Then, what causes the carbon deposit too much? Is there any way to solve it?



What is carbon deposit? Carbon deposits are black carbon particles attached to the valve, on the cylinder head, and on the spark plug, so this is not just the name of carbon deposit, but also the true "carbon".

How did the carbon deposit come from? Some car friends asked, I didn't burn carbon in this car. I burned gasoline. Where is the carbon deposit? The main fuel of motorcycles, gasoline, is composed of various hydrocarbons, that is, hydrocarbons. The main products after combustion are carbon dioxide and water. Of course, this is the perfect burning time when the combustion is not complete. The unburned hydrocarbons will have carbon precipitated and will adhere to the engine cylinder, forming carbon deposits for a long time.

As I said earlier, if the burning of gasoline is not complete, carbon deposits will form. So, what caused the burning of gasoline to be incomplete?

First, the problem of fuel quality. Fuel is not necessarily high, we only need to select the manufacturer's recommended label, but we must choose the high-quality fuel of the regular gas station, because impurities are the main cause of carbon deposition. Gasoline contains a large amount of unsaturated hydrocarbons, which will rapidly oxidize, decompose, polymerize, and condense in the air, which will aggravate the formation of carbon.



The second is the driving status problem. Most vehicles use to work every day, long-term short-distance driving, most of the engines run under medium and low load conditions, which can easily lead to carbon deposition. Due to the congested urban road conditions, the vehicle is always in a stop-and-go state, the engine is running at a low speed for more time, and the fuel that cannot be completely burned forms a gel under the action of high temperature and oxygen, and adheres to the surface of the internal parts of the engine. The high temperature acts to form carbon deposits. Because the flow velocity of the low-speed intake and exhaust gas is slow, it is impossible to effectively remove the glue just produced in the combustion chamber, the piston top, the back of the throttle, and the like, and it is easy to form carbon deposit.

The third is the problem of in-cylinder combustion. Gasoline and air are sucked into the cylinder to form a mixture, which is then ignited by a spark plug. The explosion works and generates power. In this process, the mixture of gasoline and air is perfectly mixed to completely burn. This perfect ratio is basically impossible. Achieve, so the burning will not be complete. When the mixture is too rich, the oil has less air and burns incompletely, forming carbon particles. When the ignition energy is weak and the mixture cannot be fully ignited in time, it will also cause incomplete combustion and carbon deposition. Therefore, an ignition device with a strong ignition energy and accurate ignition timing is very important!



The above three problems are the main factors that cause carbon deposits, and there are many other factors that can cause such problems. So, is there any way to avoid excessive carbon deposits? There are also three points.

First, the ratio of the concentration of the mixture is appropriate. For more information on how to fine-tune the mix ratio, please refer to other articles on your fingertips, as detailed above.

The second is to modify the performance of the igniter. Only powerful ignition energy is a powerful weapon to detonate the mixture.

The third is to conditionally increase the speed. Running at high speed can effectively burn some unstable carbon particles and have a certain effect on removing carbon deposits.