SCR is one of the best after treatment technology for de-NOx in automotive diesel engines. However, due to the sea water scrubbing desulfurization in marine diesel engines, the exhaust gas leads to a significant decrease in exhaust gas temperature, so SCR technology for vehicles cannot be directly transferred to marine diesel engines. This work conducted a bench test to test the exhaust emissions of a diesel engine by adding ozone to the exhaust gas under conditions of both low load and idling. The results showed that when the exhaust gas temperature was above180 ℃, NOx increased with a maximum increase of 93.14% due to the ozone decomposition. When the gas temperature was below 100 ℃, ozone oxidized part of NO to NO2. The O3/NO molar ratio had a greater effect on the NOx emissions of diesel engines. As the O3/NO molar ratio was close to 1, the NO oxidation effect was the best and the de-NOx efficiency reached 79.31%. Under low temperature operating conditions, O3 is effective in reducing NOx emissions from the exhaust of marine diesel engines.
Study on the Effect of Ozone on Diesel Engine Exhaust NOxEmission
Lect. Notes Electrical Eng.
Society of Automotive Engineers (SAE)-China Congress ; 2022 ; Shanghai, China November 22, 2022 - November 24, 2022
2023-04-29
13 pages
Article/Chapter (Book)
Electronic Resource
English
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