Nitrogen is the main element for formation of NOx, if we remove the nitrogen from the air and then, supply to engine, definitely reduce the NOx emission. But it will cost effective or not?
As you said removing Nitrogen molecule from air will surely reduce NOx formation at a greater level.
but, to do that in a simplified and cost effective manner seems to a bigger challenge..
many have tried to replace the air intake with H2 or O2 though they showed good results are not able to replace the Nitrogen mixed air completely...
To answer you, No it is not cost effective to do that. since it needs many external arrangements etc
@Mebin Samuel you are right, but I just want to minimize the cost of that process.
Sandeep Kumar Duran as far as i know, reducing that cost in an economical manner is very hard to achieve at this point of time.
Well, NOx emissions not only depend on the availability of Nitrogen. And it's almost impossible to reduce N2 from air intake in a cost-effective way. The two main reasons that contribute to NOx emissions are 1) temperature 2) availability of oxygen. Most engineers work to make sure there is no localised high temperature thereby reducing NOx. You can keep all these parameters in mind and then go about your research.
Trail with a mixture of CO2 and O2 or other oxygenated non-nitrogen compound.
@Bireswar sir, you are right but as a researcher we need to find the solution.
The easiest way for addressing NOx emission problem is decreasing the gas temperature in combustion chambers, but the main drawback of this method is a pressure drop which would result in a reduction of generated power. So, we should looking for a solution to maintain the brake power while we decreasing the gas temperature, it sound more cost effectively than removing N2 from the intake air.
No good! N2 (approx. 78%) is the working fluid in the thermal cicle of the engine
Yes, it can be done economically. I researched this about 12-15 years ago in making a membrane to filter out some of the nitrogen. 78% of the combustion process is to do with this inert gas which apart from suppression of pre-ignition, does nothing for the combustion process. Of course you would have to re-design the engine as the combustion process would be closer to a percussion explosion rather than incendiary, which is heat & noise, or wasted energy.
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