title: The influence of deposit control additives on nitrogen oxides emissions from spark ignition engines (case study: Tehran).
abstract: In the present research, the influence of a deposit control additive on NOx emissions from two types of gasoline engine vehicles i.e., Peykan (base on Hillman) and Pride (South Korea Kia motors) was studied. Exhaust NOx emissions were measured in to stages, before decarbonization process and after that. Statistical analysis was conducted on the measurement results. Results showed that NOx emissions from Peykans increased 0.28% and NOx emissions from Pride automobiles decreased 6.18% on average, due to the elimination of engine deposits. The observed variations were not statistically and practically significant. The results indicated that making use of detergent additives is not an effective way to reduce the exhaust NOx emissions from gasoline engine vehicles.
authors.affiliation: Faculty of Environment, University of Tehran, P.O. Box 14155-6135, Tehran, Iran.
authors.forename: Gholamreza Nabi
authors.initials: GN
authors.lastname: Bidhendi
authors.forename: Ali Daryabeigi
authors.initials: AD
authors.lastname: Zand
authors.forename: Alireza Mikaeili
authors.initials: AM
authors.lastname: Tabrizi
authors.forename: Hamid
authors.initials: H
authors.lastname: Pezeshk
authors.forename: Akbar
authors.initials: A
authors.lastname: Baghvand
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D000397:Air Pollution / Q000517:prevention & control*; D003902:Detergents / Q000494:pharmacology*; D004784:Environmental Monitoring; D004867:Equipment Design; D005742:Gasoline; D007492:Iran; D009589:Nitrogen Oxides / Q000032:analysis*; D001335:Vehicle Emissions / Q000517:prevention & control*
chemical_list: D000393:Air Pollutants; D003902:Detergents; D005742:Gasoline; D009589:Nitrogen Oxides; D001335:Vehicle Emissions