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Fuel consumption comparison of two forwarders in lowland forests of pedunculate oak

Zdravko Pandur   , Marijan Šušnjar, Marin Bačić, Andreja Ðuka, Kruno Lepoglavec, Hrvoje Nevečerel

iForest - Biogeosciences and Forestry, Volume 12, Issue 1, Pages 125-131 (2019)
doi: https://doi.org/10.3832/ifor2872-011
Published: Feb 11, 2019 - Copyright © 2019 SISEF

Research Articles


Fuel consumption of forest machinery and vehicles depends mainly on terrain conditions, working methods, drivers’ skills, engine load under working conditions, engine speed, type and technical characteristics of the machine. In timber harvesting operations, fuel consumption is significant for both, economic (costs), and environmental issues (80-95% of exhaust emissions and soot particles are associated with fuel consumption). The objective of this study was to compare fuel consumption in two different forwarders and to analyse two different measuring devices for fuel consumption. Fuel consumption was measured on a 6-wheeled Valmet 840.2 forwarder and an 8-wheeled Valmet 860.4 during roundwood and energy wood extraction in winter period. A differential fuel flow meter and a fuel measuring probe were used for measuring fuel consumption as well as a Fleet Management System (FMS) for transmitting measured data. Fuel consumption was expressed in six different ways depending on the stage of the working cycle, time, travelled distance, load volume and load mass. Finally, both the advantages and disadvantages of the used fuel measuring devices were gained. The results indicated higher fuel consumption of the smaller Valmet 840.2 forwarder due to lower soil bearing capacity and longer extraction distances. For both forwarders, higher fuel consumption (expressed in l t-1 km-1) was observed while extracting energy wood due to its lower overall mass.

  Keywords


Forwarder, Fuel Measuring, Timber Extraction, Load, Roundwood, Energy Wood

Authors’ address

(1)
Zdravko Pandur
Marijan Šušnjar
Marin Bačić
Andreja Ðuka
Kruno Lepoglavec
Hrvoje Nevečerel
Department of Forest Engineering, Faculty of Forestry, University of Zagreb, Svetošimunska 25, Zagreb (Croatia)

Corresponding author

 
Zdravko Pandur
zpandur@sumfak.hr

Citation

Pandur Z, Šušnjar M, Bačić M, Ðuka A, Lepoglavec K, Nevečerel H (2019). Fuel consumption comparison of two forwarders in lowland forests of pedunculate oak. iForest 12: 125-131. - doi: 10.3832/ifor2872-011

Academic Editor

Enrico Marchi

Paper history

Received: May 30, 2018
Accepted: Dec 02, 2018

First online: Feb 11, 2019
Publication Date: Feb 28, 2019
Publication Time: 2.37 months

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