Comparison of mechanical and electric drive of mulcher
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Kuupäev
2017
Kättesaadav alates
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
The contribution is focused on comparison of mechanical and electric drive of mulcher
with vertical axis of rotation by means of mathematical model. The mulcher has working width
of 6 m and it is usually aggregated with tractor of minimal power of 150 kW. On the test plot the
torque and power transferred trough the tractor PTO, fuel consumption and the production of
gaseous emissions components were monitored. This field measurement served as a basis for
modelling as well as measured complete characteristics of the combustion engine of the tractor
John Deere 7930. As a main base for the modelling the record of real operation of the tractor with
mulcher was used. Then, in the software product MathCad the operation of the tractor with
mechanical and electrical drive of the mulcher was modelled. In the case of the electrical drive
of the mulcher the tractor with internal combustion engine, connected to generator was taken into
consideration. Due to overall lower efficiency of the electrical drive with generator, worse values
of the fuel consumption and emissions production in comparison with mechanical drive were
reached in case of electric drive. At hypothetical use of batteries (100% electro-powered tractor)
and when the energy mix at Czech Republic is taken into consideration, it is possible to reach the
quarter values of emissions production in comparison with combustion engine.
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electric drive, emissions, fuel consumption, mulcher, articles