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, Volume 10, Issue 4, pp 70–77 | Cite as

Development of tractor engines in the past twenty years

  • Roger Stirnimann
  • Danilo Engelmann
Development Drives And Auxiliary Drives

Since 1990 years, EU legislation has also been applicable to non-road vehicles, including tractors used in the agricultural sector. As a result of the stepwise introduction of exhaust gas EU emission Stages I to IV, emissions of particle mass and nitrogen oxides, the main pollutants of diesel engines, in the middle and upper power classes have been reduced by about 95 %. This could only be achieved by the intensive further development of both engine and exhaust gas technologies. HAFL and KIT explain the development and some underlying technical relationships in this sector, with a classical tractor diesel engine being used as an example.


As regards cars, a rather persistent trend is downsizing of combustion engines. Compared to predecessor engines, displacement is decreased, which is compensated by charging. Development of tractor engines, however, has been characterised by the trend of higher mean effective pressure at constant displacement. By increasing the torques,...


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Copyright information

© Springer Fachmedien Wiesbaden 2017

Authors and Affiliations

  • Roger Stirnimann
    • 1
  • Danilo Engelmann
    • 2
  1. 1.Bern University of Applied Sciences/School of Agricultural, Forest and Food Sciences (HAFL)ZollikofenSwitzerland
  2. 2.Chair of Mobile Machines of the Karlsruhe Institute of Technology (KIT)KarlsruheGermany

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