Non-road fuel consumption and pollutant emissions ... - BAFU - CH

Non-road fuel consumption and pollutant emissions FOEN 2008 10
Pollutant emissions in the non-road segment in 2005
Figure 1 shows the proportions of the various emission source categories to non-road
emissions for the four classical pollutants: carbon monoxide (CO), hydrocarbons (HC),
nitrogen oxides (NO x ) and particulate matter (PM). Different machine/appliance categories
account for the highest emission levels, depending on the pollutant.
With respect to carbon monoxide (CO) and hydrocarbons (HC), by far the highest
emission levels come from agricultural machinery. This is primarily attributable to the
use of single-axle mowers that have a relatively high engine rated power as well as
very high load factors. However, appliances used for garden care and in forestry also
make a decisive contribution towards CO and HC emissions, mainly because a very
large number of them are petrol-powered.
As far as nitrogen oxides (NO x )and particulate matter (PM) are concerned, the main
sources of emissions are agricultural and construction machinery, but industrial machinery
also makes a significant contribution towards non-road emissions of NO x and
PM.
Figure 1 and Table 2 present a more detailed summary of data from which we can see
that agricultural machinery accounts for the highest proportion of overall non-road CO
and HC emissions, with 46% of carbon monoxide and 40% of hydrocarbon emissions.
And with proportions of 37% and 44% respectively, agricultural machinery also accounts
for the highest non-road emissions of nitrogen oxides and particulate matter.
Appliances used for garden-care and hobbies contribute a proportion of 23% of overall
non-road carbon monoxide and hydrocarbon emissions. With proportions of 32% and
30% respectively, construction machinery is the second highest source of non-road
emissions of nitrogen oxides and particulate matter.