Tag Archives: driving cycle

1027-1035 R. Šmigins, V. Pīrs and D. Berjoza
Investigation in fuel consumption of a hybrid and conventional vehicle
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Investigation in fuel consumption of a hybrid and conventional vehicle

R. Šmigins*, V. Pīrs and D. Berjoza

Latvia University of Life Sciences and Technologies, Faculty of Engineering, Motor Vehicle Institute, J. Cakstes blvd 5, LV3001 Jelgava, Latvia
*Correspondence: ruslans.smigins@llu.lv

Abstract:

During the last decade the introduction of more environmentally friendly technologies were raised more rapidly by the decline in the global fossil energy resources and the increased negative environmental impact of conventional vehicles. One of such technology is the hybrid, which is currently making the transition from conventional vehicle with internal combustion engine to an electric vehicle. At this time there exist a lot of offers of such vehicles from different manufacturers, but there do not exist many researches connected with real hybrid performance in different road cycles and conditions allowing evaluate its real economical performance.
This research was realized with the aim to evaluate performance and fuel consumption of hybrid electric vehicle and its conventional internal combustion engine analogue in laboratory conditions. Tests were realized with two new Toyota Yaris vehicles in Alternative Fuels and Research Laboratory on chassis dynamometer MD-1750 using AVL KMA Mobile system. The results showed better adaptation of Toyota Yaris Hybrid to urban operation, demonstrating 21.3% lower fuel consumption than Toyota Yaris conventional gasoline vehicle, accordingly 7.29 and 8.84 L (100 km)-1.

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1041–1049 M. Kotek, P. Jindra, P. Prikner and J. Mařík
Comparison of PM production in gasoline and diesel engine exhaust gases
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Comparison of PM production in gasoline and diesel engine exhaust gases

M. Kotek*, P. Jindra, P. Prikner and J. Mařík

Czech University of Life Science Prague, Faculty of Engineering, Department of Vehicles and Ground Transport, Kamýcká 129, CZ165 21 Prague, Czech Republic
*Correspondence: kotekm@oikt.czu.cz

Abstract:

The article is focused on different kind of combustion engines and their particulate matter production. The first part of experiments dealt with particulate matter production under defined driving cycle and operating regimes. The second part of experiments was carried out to measure the maximal PM production under engine’s full load regime. The experimental vehicle engines were manufactured by Skoda Auto a.s., equipped with modern fuel injection systems. Two representatives of diesel engines were chosen: the engine EURO-4 1.4 TDI with PD (Unit injector) injection system and the EURO-6 1.6 TDI with common rail injection system and DPF. As two representatives of gasoline EURO-4 engines were chosen: 1.2 MPI with non-direct fuel injection system and 2.0 FSI with direct stratified fuel injection system. The analysis of the particulate matters was carried out on a TSI Engine Exhaust Particle Sizer 3090 that is able to classify particles from 5.6 nm to 560 nm. In the case of diesel engines the results proved expectable decrease in PM production due to usage of diesel particulate filter (DPF). The older engine without DPF produced more than hundred times higher PM production under all operating regimes of driving cycle. The result of gasoline engines confirmed increased PM production of direct injection systems especially under higher engine load. FSI engine in driving cycle reached up twenty times higher PM production than MPI engine.

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