| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for easily measuring an airspeed to be utilized for accurate calculation of the fuel efficiency.SOLUTION: The method includes: determining a temperature drop of a coolant mass flow; determining an air mass flow responsible for the temperature drop of the coolant mass flow; and determining an airspeed relative to the vehicle, based on the air mass flow responsible for the temperature drop of the coolant mass flow. |
