Pure plant oil fuels, used in compatible agricultural machinery contribute to sustainable food supply. Especially
rapeseed oil fuel significantly reduces greenhouse gas emissions up to 91 % and thus, lowers the carbon footprint of
agricultural products. However, despite this advantage plant oil fuels are barely used in practice, because of
technical, economical and sustainability concerns of potential users. It is the purpose of this work, to show the
reliability, downtimes and the emission behaviour of pure rapeseed oil compatible tractors in practice. As test fuel,
cold-pressed rapeseed oil fuel, complying with the national German standard DIN 51605 was used. Emission testing
on the tractor test stand is based on the standard procedure of EU guideline 2016/1628. Differing from type
approvals, where engine test stands are used, here the measurement is done at the tractors with mounted engines. The
power is measured at the power take-off (PTO) with a dynamometer. As testing cycle, the Non-Road-Steady-Cycle
(NRSC) and an adapted Non-Road-Transient-Cycle (10sNRTC) are applied. For real driving emission (RDE)
measurements, two state-of-the-art tractors are being used. By using a PEMS Semtech Ecostar, which was set up
in a box for off-road use, the emission components CO, HC, NOX are measured. Investigation of the monitored
20 tractors (exhaust stages I, II, IIIA, IIIB and IV) for more than 60.000 hours, showed no considerable failures
or damages. Generally, the limited exhaust gas components (NOX, CO, HC, PM) determined at a tractor test stand
remained nearly at the same level over the operating time. Plant oil tractors with exhaust gas stage IV achieve the
legal emission limits with rapeseed oil fuel during both, the NRSC and 10sNRTC. Results of RDE measurements also
show that recorded emission values are within expected limiting values for both fuels. Conformity factors that relate
actual emissions, measured with PEMS, to corresponding test cycle values, measured at the test stand are within
approaching legitimacy.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00