| 摘要 |
<P>PROBLEM TO BE SOLVED: To objectively evaluate a fuel cost of a vehicle by the absolute standard irrespective of a gross vehicle weight or engine displacement. <P>SOLUTION: A fuel consumption rate calculation unit 24 divides a fuel consumption amount m<SB POS="POST">f</SB>that is an integrated value of a fuel injection amount Ti during travel distance calculation calculated by a fuel consumption amount calculation unit 22 by a travel distance L calculated by a travel distance calculation unit 21 to calculate a fuel consumption rate Mf per unit travel distance. A required work amount calculation unit 25 calculates a required work amount We based on a square root of a product of a gross vehicle weight M calculated by a gross vehicle weight calculation unit 23 and an engine displacement Vd. A fuel consumption rate evaluation value calculation unit 26 divides the fuel consumption rate Mf by the required work amount We to calculate a fuel consumption rate evaluation value f. The fuel consumption rate evaluation value f is an inclination of a straight line connecting a coordinate point (Mf, We) specified by the fuel consumption rate Mf of ordinate and the required work amount We of abscissa and the origin, and indicates the required fuel cost per unit work. <P>COPYRIGHT: (C)2012,JPO&INPIT |
