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Oil-in-gasoline lubricated one-cylinder four-stroke engine for chainsaws

Gemischgeschmierter Einzylinder-Viertaktmotor für Motorsägen

  • Development
  • Small Engines
  • Published:
MTZ worldwide Aims and scope

Abstract

Up until now, piston and diaphragm-controlled two-stroke engines have been used almost exclusively for handheld engine-powered equipment, since these — when compared with four-stroke engines — have advantages mainly in regard to simple design, low weight, wide usable speed range and high power density. A disadvantage is the high hydrocarbon emissions, which due to the principle design are caused by the significant gas-exchange losses. In the future, the simple two-stroke engine will no longer be able to meet the increasingly stricter thresholds in Europe and the USA for pollutant emissions with hand-held engine-powered equipments. This is why Dolmar GmbH developed an innovative oil-ingasoline lubricated high-performance four-stroke engine for chainsaws, which combines the advantages of the two-stroke engine with the low emission of the four-stroke principle.

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References

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Authors
  1. Bernhard Auler
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  2. Jan Rodenbeck
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  3. Johannes Lügger
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  4. Ernst Gorenflo
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Auler, B., Rodenbeck, J., Lügger, J. et al. Oil-in-gasoline lubricated one-cylinder four-stroke engine for chainsaws. MTZ Worldw 66, 12–14 (2005). https://doi.org/10.1007/BF03227762

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  • DOI: https://doi.org/10.1007/BF03227762

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