| 摘要 |
PROBLEM TO BE SOLVED: To propose a route minimizing the fuel cost from a departure to a destination by storing a legal speed and gradient information every road section in map information, storing vehicle parameters including fuel consumption ratio in a second memory and calculating to estimate the fuel consumption every a plurality of candidate routes. SOLUTION: A map information (first memory) 1 stores information the legal speed and gradient every road section, a vehicle power line parameter input part (second memory) 2 stores vehicle parameters, including the fuel consumption ratio relating to the vehicle running speed and gradient as well as the tractive force and engine rotation speed, depending on the car speed, corresponding to the loading weight, and a fuel simulation processor 12 does the estimating calculation to estimate the accelerating condition, including estimated no. of times of stopping the vehicle running according to the map information 1 and estimate the fuel consumption according to the accelerating condition and vehicle parameters and displays the calculation result of the total fuel consumption, including the fuel consumption obtd. by estimation, corresponding to candidate routes on a display 6. |
