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Utsläpp från större dieseldrivna arbetsmaskiner

inventering, kunskapsuppbyggnad och studier om åtgärder och styrmedel

Wetterberg, Christian and Magnusson, Roger and Lindgren, Magnus and Åström, Stefan (2007). Utsläpp från större dieseldrivna arbetsmaskiner. Technical Report. Uppsala: (NL, NJ) > Department of Biometry and Engineering, Sveriges lantbruksuniversitet. Rapport. Miljö, teknik och lantbruk ; 2007:0

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In this report both the present situation and estimates of emissions from large non-road mobile machinery were studied. The estimates over future emission amount from the non-road mobile machinery sector in Sweden were conducted for the year 2010 and 2020. Special focus has been taken to the development of technology for diesel engines and alternative fuels. Moreover, possible measures and means of control to reduce emissions in the future were discussed. The study comprises fuel consumption and emissions from non-road mobile machinery equipped with diesel engines with a rated engine power of 37 to 560 kW. Nonroad mobile machinery for example includes tractors, wheel loaders, excavators, articulate haulers, mobile cranes, combined harvester, forestry machines and trucks. The estimate of annual fuel consumption and emissions amounts were based on input data concerning occurring types of machinery, number of machines, average engine power, annual work hour, load factors, fuel consumption and emission factors. Furthermore, concern was taken to the age distribution of the entire assembly of machinery. Inventory data regarding types of machinery, number, age, engine power, and annual work hour has been obtained from the Swedish machinery testing institute’s machinery inspection operation, statistics of sale returns from trade organisations and the Swedish motor-vehicle register. The fuel consumption and emission factors used were based on the CORINAIR Emission Inventory Guidebook and European emissions regulations for non-road mobile machinery and adjusted for: • differences in quality and specification between the fuel stipulated for use during type approval and Swedish diesel of environmental class 1, • differences between the maximum value stipulated in the emission regulations and the recorded emission amounts during type approval, • differences in engine load between the test cycle employed during type approval and during real use of the machinery, and • deterioration in fuel consumption and emission formation with increasing age. In total, 290 000 non-road mobile machinery with a rated engine power of 37 to 560 kW were estimated to operate in Sweden year 2006, which was about 25% more machinery compared with the last published study concerning number of non-road mobile machinery in Sweden (Flodström et al., 2004). The annual estimated fuel consumption and emission mounts from the non-road mobile machinery sector in Sweden for year 2006 is shown in table S1. The estimated annual fuel consumption was about 5% lower compared with previous studies despite the higher number of machinery included. For emissions the differences were even larger compared with the above-mentioned study. Emissions of NOx were halved while both emissions of CO and HC only amounted to approximately one-third of previously estimated amounts. The largest difference was obtained for emissions of particulate matter, a reduction with 75%. The differences obtained could be attributed to improved input data with higher resolution, especially concerning annual work hour as function of machinery age and the adjustment of fuel consumption and emission factors. Possible changes in the assembly of machinery between the present and previous studies were assumed to only have minor importance. Several different estimates of future emission amounts were conducted. The first estimate was based on the introduction of the European emission regulation, which resulted in a reduction of emissions of NOx and PM with about 70% compared with the present amounts. Corresponding reduction of NOx and PM to year 2010 were about 21%. The development of technology for diesel engines is focused on the reduction of nitrogen oxides and particulate matter. According to the study, current technologies for reduction of NOx were EGR, NOx-traps, SCR and engine-out modifications. For particulate matter, engine-out and different types of particulate filters will be utilised in order to fulfil future emission regulations. Alternative fuels can be used in order to reduce the emissions from current diesel engines, the most promising and suitable fuels in the future would probably be GTL-fuels, synthetic diesel and different types of biodiesel. For dedicated engines, dimethylester (DME) could be an interesting alternative. Several different means of control for reduction of emissions from non-road mobile machinery exists. Within the agricultural and forestry sector different types of economical means of control were assumed to be the most cost-effective methods. For the industrial and construction sector regulations and economical and informative means of control were assumed to have similar effects.

Authors/Creators:Wetterberg, Christian and Magnusson, Roger and Lindgren, Magnus and Åström, Stefan
Title:Utsläpp från större dieseldrivna arbetsmaskiner
Subtitle:inventering, kunskapsuppbyggnad och studier om åtgärder och styrmedel
Series Name/Journal:Rapport. Miljö, teknik och lantbruk
Year of publishing :2007
Number of Pages:69
Place of Publication:Uppsala
Publisher:Institutionen för biometri och teknik, Sveriges lantbruksuniversitet
Publication Type:Report
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Area technology > Agricultural engineering
Permanent URL:
ID Code:3786
Department:(NL, NJ) > Department of Biometry and Engineering
Deposited By: Erica Lövgren
Deposited On:17 Dec 2009 00:00
Metadata Last Modified:02 Dec 2014 10:24

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