Abstract
Japanese annual oil consumption is about 300 GL (giga liter) and energy related CO 2 emission is about 300 MtC (mega ton carbon). Among them, transport vehicles consume one third of the oil, 100 GL/year, and emit 20 percent of the CO 2, 61 MtC/year. Then, the substitution of carbon fiber reinforced plastics (CFRP) for the structural mate rial of transport vehicle is quite effective in lightening, fuel efficiency and hence the mitigation of glob al warming. In this paper, life cycle CO 2 emission and energy consumption of the ultra lightweight automobile us ing CFRP are presented first. Then, the effect of lightweight and fuel cell automobiles on the mitigation of global oil consumption and CO 2 emission is estimated under the assumption of Asian motorization.
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