SYSTEM AND METHOD FOR DETERMINING DTE OF ENVIRONMENTALLY-FRIENDLY VEHICLE

摘要

A system and method for determining a distance to empty (DTE) of an environmentally-friendly vehicle, which enable a driver to recognize that a DTE is gradually and linearly decreased as an actual travelling distance is increased. This provides capability of more conveniently and intuitively guiding a DTE to a driver by calculating an ideal and final DTE desired by the driver by using an actual travelling distance measured by an odometer (ODO) and displaying the calculated final DTE on a cluster.

主权项

1. A system for determining a distance to empty (DTE) of an environmentally-friendly vehicle, the system comprising:
an initial calculating unit configured to calculate a first predicted DTE (DTEpredict) at an initial DTE prediction time using distance to empty (DTE) prediction logic (DTE(km)=fuel efficiency [km/kWh]×available battery energy [kWh]); a predicted DTE recalculation determining unit configured to calculate an actual travelling distance (d) travelling from a just previous time, at which the predicted DTE (DTEpredict) is calculated, compare the calculated actual travelling distance (d) with a predetermined actual travelling distance (D), and determine whether to recalculate the predicted DTE; and a displayed DTE calculating unit configured to calculate a displayed DTE (DTEfinal(t)) as a linearly decreasing value when the actual travelling distance (d) travelling from the just previous time, at which the predicted DTE (DTEpredict) is calculated, to a specific time is smaller than the predetermined actual travelling distance (D).