What methods are there to clean up carbon deposits?

1. Throttle carbon deposit: Throttle is the device at the top of combustion system to control air intake. Due to its working environment and nature, there may be carbon deposits on this part.

The most common cleaning method to clean the throttle carbon deposit is to remove the throttle, then clean the front and rear of the throttle with carburetor, and then wipe off the decomposed carbon deposit with cotton cloth.

Excessive carbon deposition in the throttle will lead to unstable idle speed of the engine, and it is impossible to refuel the valve. It is suggested that riders should not be greedy and cheap, and use inferior gasoline, which can reduce the formation of carbon deposits every 30,000 to 40,000 kilometers.

2. Carbon deposition inside the engine: Carbon deposition inside the engine is mainly reflected in the intake and exhaust valves and the pistons of the combustion chamber. The carbon deposit here can be cleaned with additives, which are added directly to the fuel tank. Although the cleaning effect of this method is not particularly obvious, it cannot be said that it has no effect after long-term use.

The best cleaning method is to find a master with relevant experience to wash by machine, which is more economical and cleaner than adding washing. Maintain and replace the air filter on time and try not to use inferior gasoline.

Extended data:

Carbon deposition is a manifestation of abnormal discharge machining of spark machine. It can be clearly seen from the sketch of a general engine that the power source → mixed gas must enter the combustion chamber through the intake valve.

A small amount of gasoline will adhere to the intake valve. When the engine is at a high temperature, hydrocarbons, paraffin and colloid that cannot be completely burned in gasoline will burn into colloidal carbon. If there is scale in the nozzle, the sprayed gasoline will be in a state of poor atomization, and the uneven mixing of gasoline and air will increase the condensation of gasoline in the intake valve.

A large amount of heat energy is instantly concentrated in the discharge channel, and the temperature can reach more than 10000 degrees Celsius, so that the surface of the workpiece melts and gasifies, explosively splashes into the processing liquid, and quickly solidifies into discharge slag, which is taken away by the flowing working liquid.

At this time, a tiny pit is left on the surface of the workpiece, and then the discharge enters the off period, and the discharge stops briefly, and the insulation state between the electrode and the workpiece is restored.

However, when the metal particles between the electrode and the workpiece are not completely carried away by the machining fluid, ionization cannot be completely eliminated. When the next 0n time comes, a short circuit will be formed. At this moment, the instantaneous high temperature will make the surface of the workpiece bulge and form carbon deposit.

Carbon deposition should be avoided as much as possible in EDM, especially in precision die processing.

Baidu encyclopedia-carbon deposition