Methods for Reducing Emissions of Small Internal Combustion Engines

Johannes Niinikoski, Jonathan Ewalds, Esa Heikkinen, Joni Kotilainen, Marko Kääriäinen, Kari Tammi, Panu Kiviluoma, Aku Korhonen, Petri Kuosmanen

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


This study was motivated by the fact stated by European Commission regarding non-road mobile machinery that one hour use of a chainsaw equipped with a two-stroke engine produces as much emissions as driving for 2000 km with a modern passenger car. A carbureted small engine with a mechanical governor is quite inefficient and the emissions of such engines are significant. Fuel consumption and emissions of these engines can be reduced by electronic throttle control and retrofitting electronic fuel injection (EFI). A load testing rig was built to help measuring the emissions produced by the engine. The emissions were measured for both the carburetor and electronic fuel injection. Also the use of renewable fuel, ethanol with electronic fuel injection was examined.
Original languageEnglish
Title of host publicationProceedings of the 11th International Conference of DAAAM Baltic, INDUSTRIAL ENGINEERING, 20-22 April 2016, Tallinn, Estonia
EditorsTauno Otto
Place of PublicationTallinn
PublisherTallinn University of Technology
Number of pages6
ISBN (Print)978-9949-23-987-0
Publication statusPublished - 2016
MoE publication typeA4 Article in a conference publication
EventInternational DAAAM Baltic Conference: Industrial Engineering - Tallinn University of Technology, Tallinn, Estonia
Duration: 20 Apr 201622 Apr 2016
Conference number: 11

Publication series

NameProceedings of the International Conference of DAAAM Baltic
PublisherTallinn University of Technology
ISSN (Print)2346-612X
ISSN (Electronic)2346-6138


ConferenceInternational DAAAM Baltic Conference


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