Automotive Pollutants and Their Control

internal combustion engine of the car generates a lot of pollutants, but the main ones are CO, NOx and unburnt hydrocarbons.

Carbon monoxide is a gas present in exhaust gases, if the combustion (or burning) of fuel is not complete, mainly due to lack of air. It can be fixed in the 3-way catalyst, as it oxidizes into CO2. It can also be controlled using the exhaust gas oxygen sensor, or ego, which is located in the exhaust pipe and sends back a signal to the electronic control unit (ECU). This Preradovic fuel: air ratio and other parameters such as ignition advance angle to let the complete combustion

is a group of other pollutant nitrogen oxides, which can lead to acid rain. It also turns into a catalyst which is reduced to nitrogen gas. Emissions of NOx can be reduced by applying what is called an exhaust gas re-circulation system, which pumps back some of the exhaust gases back into the engine. While this May seem to be counter-intuitive, but it does not help. What is important is not to act as an inert gas that does not participate in the burning and thus reduces the temperature in the cylinder. It is evident that NOx produced at high engine temperatures, so it reduces the formation of NOx.

third pollutant, as unburnt hydrocarbons (UBHC), fuel remaining, unused, and transferred to the exhaust, and eventually released into the atmosphere. This causes a loss of fuel mileage and reduces significantly. Its control is very similar to that of CO, only that it is easy oksidiraju.Isti process is used, such as CO, the catalyst and the final products are water vapor and carbon dioxide. Another approach is to use the torch, which is like a chamber located directly after the exhaust port. It burns the remaining UBHC and completes the process.

The fourth is an important contaminant coal particles. It's the same thing that makes your exhaust black. It is also responsible for lung disease and other health problems. This can be prevented from leaking into the atmosphere through filters that trap them and prevent them escaping. Later, you need to be cleaned or replaced. Filters can be self-cleaning type too, to burn the carbon particles and carbon dioxide filter is ready to be used again.