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Fuel-saving driving evaluation system

  • US 8,874,303 B2
  • Filed: 12/14/2009
  • Issued: 10/28/2014
  • Est. Priority Date: 12/22/2008
  • Status: Active Grant
First Claim
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1. A fuel-saving driving evaluation systemcomprising:

  • an engine speed measuring device which measures an engine speed of a vehicle to be evaluated;

    a vehicle speed measuring device which measures a vehicle speed of the vehicle to be evaluated;

    a fuel flow-rate measuring device which measures a fuel flow rate; and

    a controller,the controller has a function of storing a plurality of types of standard values and target values of parameters relating to fuel-saving driving evaluation of the vehicle to be evaluated;

    a function of determining the standard values and the target values of said parameters on the basis of a control signal sent from a second controller which is constructed to send and receive data to and from the vehicle to be evaluated; and

    a function of comparing the determined standard values and the target values with the measurement results of the measuring device and of determining whether or not the fuel-saving driving is achieved, whereinin a case that said parameter is a parameter other than a rate of driving by inertia during deceleration, the following equation is formed between the standard values and the target values of said separately set parameters and the standard values and the target values of the parameters to be the basis;


    separately set standard value=standard value to be the basis+(standard value to be the basis−

    target value to be the basis)×

    (100

    E
    )/(100−

    50)
    separately set target value=target value to be the basis+(standard value to be the basis−

    target value to be the basis)×

    (100−

    E)/(100−

    50)and E is a constant set by a difficulty level.

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