Browse Publications Technical Papers 2005-01-3828
2005-10-24

R&D and Analysis of Energy Consumption Improvement Factor for Advanced Clean Energy HEVs 2005-01-3828

Ultra-low energy consumption and ultra-low emission vehicle technologies have been developed by combining petroleum-alternative clean energy with a hybrid electric vehicle (HEV) system. Their component technologies cover a wide range of vehicle types, such as passenger cars, delivery trucks, and city buses, adsorbed natural gas (ANG), compressed natural gas (CNG), and dimethyl ether (DME) as fuels, series (S-HEV) and series/parallel (SP-HEV) for hybrid types, and as energy storage systems (ESSs), flywheel batteries (FWBs), capacitors, and lithium-ion (Li-ion) batteries. Evaluation tests confirmed that the energy consumption of the developed vehicles is 1/2 of that of conventional diesel vehicles, and the exhaust emission levels are comparable to Japan's ultra-low emission vehicle (J-ULEV) level. In the analysis of energy consumption improvement factors, it was found that a heavy-duty (HD)-HEV benefits from the effect of regenerative braking to a greater extent than a light-duty (LD)-HEV.

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