Abstract
The bio-fuel, which is produced from the solar energy, is expected from the long-term viewpoint, because there is no fear of the carbon dioxide increase in addition to not drying up. The performance of the diesel engine operated by rapeseed oil, which has the potential of practical application as a bio-fuel, is examined. Though the rapeseed oil is produced as a food at present, there should be a different manufacturing method, when it is used as engine fuel. Generally there are 7 stages on the manufacturing process of rapeseed oil as a food. In this paper, the performance of the diesel engine operated by the oil of the manufacturing process of 7 stages is clarified. In conclusion, it is shown that the processing of 7 stages is useless, if it is utilized as a diesel engine fuel.
