A diesel oxidation catalyst consists of honey comb like structure which is coated with the metal platinum. This is enclosed in a container made from stainless steel. The design of the honeycomb is such that it provides ample surface area for the gases to completely exhaust. This help convert harmful pollutants into harmless substances like carbon di oxide and water.
These days there is added pressure y the government to control the harmful emissions from the vehicle. There are strict rules and standards which need to be adhered to. These can however be controlled by the quick and efficient solution provided by the diesel oxidation catalyst.
It helps oxidise carbon mono oxide and hydrocarbons. It doesn’t make a great deal of difference whether you are using the diesel vehicle on road or off road, it is necessary to adhere to the strict emission standards. The catalyst is actually an after treatment device. It helps to break down the pollutants in the exhaust. It quite similar to catalytic converter found in cars.
Diesel oxidation catalyst can cost anywhere from 600 to 2000 dollar. This difference in price is generally due to different manufacturers, installation requirements and the specialised needs of different engines. These are generally heavier than a muffler, this is why it requires a special mounting process which can increase the initial cost.
With proper installation and maintenance, the catalyst can last for decades. In order to ensure that it works properly you would need to take help from additional tools like a catalyst cleaner. However, frequent engine problems can cause the life span of the catalyst to shorten.
How does the diesel oxidation catalyst work?
- A diesel oxidation catalyst works by oxidising unburnt hydrocarbons and carbon mono oxide. In reality for such a reaction to take place, very high temperatures are required. However the presence of the catalyst allows these reactions to take place at a much lower temperature.
- The catalyst in turn is heated by the hot exhaust gases which are given off as soon as the engine is started. The point at which the oxidation occurs is known as the light off temperature. After this stage the conversion rate steadies and remains constant.
- Though it’s a known fact that the performance ability of the catalyst starts lowering as the vehicle starts to age. The sulfur components are responsible for casing a great deal of build-up on the catalyst eventually leading to its inefficiency.
- With the buildup the performance of the catalytic platinum particles also starts to decrease due to the lessening of its aggregate surface area. Since less of the conversion area is exposed t the gases, the conversion efficiency of the catalyst starts to fail.
Diesel oxidation catalysts are the most effective tools for reducing the harmful emissions from vehicles. These are the best means of making the world a better place to live in. one which is free from pollutants and harmful gases. It can help the world progress and increase industrialisation while also providing solutions to reduce diesel engine emissions.