Whatever it is from fuel diesel engines or dual-fuel engines, I am looking for information about NO2 emissions.
They may depend on the fuel used (HFO, MDO...), the engine itself (Tier II, Tier III compatible) and even the proper tuning of the engine (vs. original map for exmple), and also from the devices behind (SCR, exhaust gas boiler that reduces temperature, wet-scrubber in close or open loop).
NO2 is a small part of NOx, but in several ways, the most important to assess: health impact, color, etc.
NOx emission are quite well documented, but I would rather have information about NO2 specifically.
In Tier II, Tier III engines; influence of the fuel (HFO, MGO and alternatives); influence of equipment (SCR seems having low effect on NO2, scrubbers seem to increase them...).
Do you have figures, measurements ?
Generally in Diesel engines Nox emissions are more. They occur only in the engine exhaust as nitric oxide (NO) and nitrogen dioxide (NO2) . NO, NO2 emissions are invisible emissions and harmful. Increasing the ignition advance develops high temperatures and nitrogen and oxygen react at these temperatures to form NO and NO2 (less oxygen content NO, more oxygen content, NO2). They affect engine design mode and operation. At lean and rich mixtures the concentration of NOx , is comparatively low. Measurement of NO2 can be done by chemiluminescence analyser.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Thermodynamics