Usporedba dvije metode mjerenja potrošnje goriva skidera

Marijan Šušnjar; Zdravko Pandur; Marin Bačić; Domogoj Ulovac; Hrvoje Kopseak

doi:10.54652/rsf.2025.v55.i2.621

Authors

Marijan Šušnjar Faculty of Forestry and Wood Technology, University of Zagreb https://orcid.org/0000-0003-3644-1396
Zdravko Pandur Faculty of Forestry and Wood Technology, University of Zagreb https://orcid.org/0000-0003-4046-1349
Marin Bačić Faculty of Forestry and Wood Technology, University of Zagreb https://orcid.org/0000-0002-1205-4060
Domogoj Ulovac Faculty of Forestry and Wood Technology, University of Zagreb
Hrvoje Kopseak Croatian Forests Ltd. Zagreb, Forest Administration – Bjelovar Branch

DOI:

https://doi.org/10.54652/rsf.2025.v55.i2.621

Keywords:

skidder, fuel consumption, flowmeter, fuel pump, sensors

Abstract

The study shows a comparison of fuel consumption measurements with two different methods in real working conditions of timber extraction with an Ecotrac 140 V skidder. The two methods relate to measuring fuel consumption via a sensor on the fuel supply pump as part of a Fleet Management system and measurements using a built-in differential fuel flowmeter DFM 100CD.

The study established differences in measured fuel quantities over 12 days measured when pulling wood from a final cut of a beech stand, and 12 days measured when pulling wood from a thinning beech stand. At both worksites, a half-stem method was used, with the downhill extraction. The load volumes per cycle were measured at landing.

The results indicate that difference between the reading of the fuel consumption of the flowmeter and the sensor on the fuel pump is significant as the daily outputs increases. That is because the sensor on the fuel pump does not register the return of fuel to the tank, but only reads the current fuel flow. The flowmeter takes into account the return of fuel back to the tank

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