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sector:energy:fuel_combustion:small_combustion:mobile_small_combustion:residential [2022/12/20 13:33] – [FAQs] kotzulla | sector:energy:fuel_combustion:small_combustion:mobile_small_combustion:residential [2023/04/11 12:28] (current) – [Discussion of emission trends] kotzulla | ||
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==== Activity data ==== | ==== Activity data ==== | ||
- | Activity data are taken from annual fuel delieveries data provided in line 66: ' | + | Activity data are taken from annual fuel delieveries data provided in line 66: ' |
__Table 1: Sources for consumption data in 1.A.4.b ii__ | __Table 1: Sources for consumption data in 1.A.4.b ii__ | ||
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- | These primary activity data can be distributed onto 2- and 4-stroke engines used in households via annual shares from Knörr et al. (2020b) [(KNOERR2020b)]. | + | These primary activity data can be distributed onto 2- and 4-stroke engines used in households via annual shares from Knörr et al. (2022b) [(KNOERR2022b)]. |
__Table 3: Annual shares of 2- and 4-stroke engines__ | __Table 3: Annual shares of 2- and 4-stroke engines__ | ||
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The emission factors used here are of rather different quality: | The emission factors used here are of rather different quality: | ||
- | For all **main pollutants**, | + | For all **main pollutants**, |
Here, as no such specific EF are available for biofuels, the values used for gasoline are applied to bioethanol, too. | Here, as no such specific EF are available for biofuels, the values used for gasoline are applied to bioethanol, too. | ||
- | For lead (Pb) from leaded gasoline and corresponding TSP emissions, additional emissions are are calculated from 1990 to 1997 based upon contry-specific emission factors from [(KNOERR2020b)].) | + | For lead (Pb) from leaded gasoline and corresponding TSP emissions, additional emissions are are calculated from 1990 to 1997 based upon contry-specific emission factors from [(KNOERR2022b)].) |
__Table 4: Annual country-specific emission factors from TREMOD MM< | __Table 4: Annual country-specific emission factors from TREMOD MM< | ||
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For all regulated pollutants, emission trends follow not only the trend in fuel consumption but also reflect the impact of fuel-quality and exhaust-emission legislation. | For all regulated pollutants, emission trends follow not only the trend in fuel consumption but also reflect the impact of fuel-quality and exhaust-emission legislation. | ||
- | However, especially for CO and NOx, trends are strongly influenced by the changes in annual fuel deliveries as provided in NEB line 66. | + | However, especially for CO and NO< |
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+ | Here, emissions of sulphur oxides follow the step-by-step reduction of sulphur contents in liquid fuels, resulting in a reduction of over 95% since 1990. | ||
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