| 摘要 |
PROBLEM TO BE SOLVED: To correctly calculate a CO2 exhaust amount per unit output of composite fuel when fuel is selected in light of the CO2 exhaust amount in a multi-fuel engine. SOLUTION: An ECU fetches an alcohol concentration in liquid fuel which is composite fuel, and calculates a CO2 exhaust amount per unit output of the liquid fuel based on the fetched alcohol concentration. CO2 exhaust amounts Wc, Wf in WTW (Well To Wheel) per unit output of CNG and gasoline/alcohol composite fuel are compared with each other in light of the alcohol concentration. According to the comparison, the fuel with a smaller CO2 exhaust amount is selected. COPYRIGHT: (C)2011,JPO&INPIT
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