Non-road fuel consumption and pollutant emissions ... - BAFU - CH
Non-road fuel consumption and pollutant emissions ... - BAFU - CH
Non-road fuel consumption and pollutant emissions ... - BAFU - CH
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9 > Supplementary observations 109<br />
9.3.4 Fuel <strong>consumption</strong><br />
With respect to <strong>fuel</strong> <strong>consumption</strong> there are considerable differences between the new<br />
calculations <strong>and</strong> the forecast in Report 49 for 2005 in the construction, industrial,<br />
agricultural, forestry <strong>and</strong> garden-care/hobby categories.<br />
In the new calculation the <strong>fuel</strong> <strong>consumption</strong> of construction machinery is significantly<br />
lower than in Report 49. The reason for this is that the number of construction machines<br />
included in the new inventory is lower. But the difference in <strong>fuel</strong> <strong>consumption</strong> is<br />
not as pronounced as the difference in the inventories: the average engine power of<br />
construction machines included in the new non-<strong>road</strong> inventory (48 kW) is considerably<br />
higher than that in the inventory in Report 49 (estimated at 26 kW in 2005).<br />
In this category, the difference in <strong>fuel</strong> <strong>consumption</strong> between the new <strong>and</strong> the previous<br />
inventory is primarily attributable to snow groomers, which have a very high engine<br />
power as well as a high level of operating hours. However, compared with the differences<br />
in the inventory <strong>and</strong> operating hours, this deviation is fairly low. This is attributable<br />
to the low load factors for forklifts, which have been listed as a separate machine<br />
sub-segment in the new inventory. The average load factor of all industrial machinery<br />
is reduced by more than half compared with the assumptions made in Report 49.<br />
The differences in these two categories are attributable to the inventories <strong>and</strong> operating<br />
hours. With agricultural machinery the difference in <strong>fuel</strong> <strong>consumption</strong> is less pronounced<br />
than in the inventory <strong>and</strong> operating hours (new figures: operating hours<br />
reduced by approximately 50%, but <strong>fuel</strong> <strong>consumption</strong> only 25% lower). In the new<br />
inventory, a <strong>consumption</strong> adjustment has been made at low load factors (CF 1 ), i.e.<br />
tractors which have a low load factor of 0.25 (according to FAT 1998) have an approximately<br />
30% higher specific <strong>consumption</strong> as a result. In addition, the average<br />
engine rated power of tractors in 2005 is approximately 50% higher than was anticipated<br />
for that year in Report 49 (59 versus 40 kW).<br />
In the new calculation, railway vehicles have been allocated a lower load factor that<br />
corresponds to the engine load during shunting operations. The <strong>fuel</strong> <strong>consumption</strong> thus<br />
more or less corresponds to the levels anticipated in Report 49, even though significantly<br />
higher operating hours have been assumed.<br />
The lower level of <strong>consumption</strong> in this category is partly attributable to the lower<br />
specific operating hours of the appliances, but also to the assumption that the average<br />
engine power of the appliances is lower than was assumed in Report 49. In addition,<br />
lower <strong>consumption</strong> factors were assumed here in view of the lower level of hydrocarbon<br />
<strong>emissions</strong>.<br />
Construction machinery<br />
Industrial machinery<br />
Agricultural <strong>and</strong> forestry<br />
machinery<br />
Railway machinery<br />
Garden-care/hobby appliances