Method and system of calculating distance to empty of each vehicle drive mode

Patent metadata

Field	Value
Publication number	US-11734965-B2
Application number	US-201916696220-A
Country	US
Kind code	B2
Filing date	Nov 26, 2019
Priority date	Apr 24, 2019
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A system and method of calculating a vehicle DTE are provided to calculate a fuel efficiency of each vehicle drive mode, and display a more accurate DTE of each drive mode. The method includes when a driver selects a drive mode and a drive distance of the selected drive mode is accumulated while a vehicle is being driven in the selected mode, collecting drive data including an accumulated drive distance of each drive mode, and fuel efficiency information of each drive mode. A final fuel efficiency of each drive mode is calculated using a drive distance of each drive mode, a consumption energy of each drive mode or a fuel efficiency of each drive mode, and a learning fuel efficiency. A DTE of each drive mode is then calculated based on the calculated final fuel efficiency of each drive mode.

First claim

What is claimed is:

1. A method of calculating a distance to empty (DTE) of vehicle drive modes of a vehicle, comprising:
in response to receiving a driver selection as a drive mode and accumulating a drive distance of the selected drive mode while a vehicle is being driven in the selected mode, collecting, by a controller, drive data including an accumulated drive distance of each drive mode of an eco mode, a comfort mode, a normal mode, and a sport mode, and fuel efficiency information of each drive mode of the eco mode, the comfort mode, the normal mode, and the sport mode;
calculating, by the controller, a final fuel efficiency of each drive mode of the eco mode, the comfort mode, the normal mode, and the sport mode using a drive distance of each drive mode of the eco mode, the comfort mode, the normal mode, and the sport mode, a consumption energy of each drive mode or a fuel efficiency of each drive mode, and a learning fuel efficiency of each drive mode obtained by performing learning while the vehicle is being driven;
calculating, by the controller, a DTE of each drive mode based on the calculated final fuel efficiency of each drive mode, and
displaying, in response to a control signal output from the controller, on a display device a DTE of a mode that corresponds to the driver selection of the drive mode among the calculated DTEs of the respective drive modes,
wherein the final fuel efficiency of the selected drive mode is calculated by performing blending for the actual drive fuel efficiency of the each drive mode of the eco mode, the comfort mode, the normal mode, and the sport mode and for the learning fuel efficiency of each drive mode of the eco mode, the comfort mode, the normal mode, and the sport mode according to a ratio of the total drive distance of the eco mode, the comfort mode, the normal mode, and the sport mode to the drive distance of the each drive mode of the eco mode, the comfort mode, the normal mode, and the sport mode.

2. The method of claim 1 , wherein in the collecting of the drive data, the drive data further includes total drive distance inform accumulated while the vehicle travels, and the calculating of the final fuel efficiency of each drive mode further includes calculating, by the controller, the final fuel efficiency of each drive mode by further using the total drive distance information.

3. The method of claim 2 , wherein in the calculating of the final fuel efficiency of each drive mode, the final fuel efficiency of each drive mode is a final fuel efficiency of each drive mode calculated using the formula below,

CR
F

=

D
M

D
T

×

CR
M

+

(

1
-

⁢

D
M

D
T

⁢

)

×
C
⁢

R
L

Formula

wherein, CR F is a final fuel efficiency of each drive mode, D M is a drive distance of each drive mode, D T is the total drive distance, CR M is a fuel efficiency of each drive mode which becomes the drive data, and CR L is a learning fuel efficiency.

4. The method of claim 2 , wherein in the collecting of the drive data, the drive data further includes a total consumption energy or fuel efficiency while the vehicles is being driven, and the obtained drive data is stored when the drive data satisfies a predetermined fuel efficiency learning condition.

5. The method of claim 2 , wherein when the total drive distance travelled by the vehicle reaches a predetermined set distance after updating a previous fuel efficiency, the method further includes:
calculating, by the controller, a fuel efficiency from the total drive distance and the total consumption energy which are accumulated after the previous fuel efficiency has been updated;
calculating, by the controller, a new learning fuel efficiency by adding the calculated fuel efficiency, which is calculated from the total drive distance and the total consumption energy, to the previous learning fuel efficiency, and by obtaining an average of the same; and updating, by the controller, the learning fuel efficiency to the newly calculated learning fuel efficiency, and storing the newly calculated learning fuel efficiency.

6. The method of claim 1 , wherein the collecting of the drive data includes: collecting, by the controller, consumption energy or fuel consumption information which is accumulated for each drive mode while the vehicle is being driven,
wherein the fuel efficiency of each drive mode used when calculating the final fuel efficiency is a value obtained by dividing the drive distance of each drive mode, which is collected as the drive data, by the consumption energy or fuel consumption of the corresponding mode.

7. The method of claim 1 , wherein the calculating of the DTE of each drive mode includes:
correcting, by the controller, the calculated final fuel efficiency of each drive mode to adjust a deviation in final fuel efficiency between the drive modes to become within a predetermined set range; and
calculating, by the controller, the DTE of each drive mode of the vehicle using the corrected final fuel efficiency of each drive mode.

8. The method of claim 7 , wherein the deviation in final fuel efficiency between the drive modes is calculated as a deviation between a reference fuel efficiency and the final fuel efficiency of each drive mode when the controller determined the reference fuel efficiency among the final fuel efficiencies of the respective drive modes, wherein the controller determines the reference fuel efficiency among the final fuel efficiencies of the respective drive modes.

9. The method of claim 8 , further comprising:
determining, by the controller, the final fuel efficiency of the drive mode which represents a maximum drive distance among the drive distances of the respective drive modes as the reference fuel efficiency.

10. The method of claim 8 , wherein when the deviation in final fuel efficiency between the drive modes is gre

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Yoo Seung Jae
• Shin Hyun Woo
• Kim Chang Yu

Classifications

• B60K35/10

  Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor · CPC title

• G07C5/02 Primary

  Registering or indicating driving, working, idle, or waiting time only (apparatus forming part of taximeters G07B13/00) · CPC title

• G01C21/26

  specially adapted for navigation in a road network · CPC title

• G01F9/008

  where the other variable is the flight or running time · CPC title

• B60L3/12 Primary

  Recording operating variables {; Monitoring of operating variables} · CPC title