System and method for controlling driving of hybrid vehicle

Patent metadata

Field	Value
Publication number	US-10703353-B2
Application number	US-201715631484-A
Country	US
Kind code	B2
Filing date	Jun 23, 2017
Priority date	Jan 23, 2017
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A system and method for controlling driving of a hybrid vehicle are provided. The method includes determining whether acceleration of the hybrid vehicle is predicted and increasing a conversion reference value converting a driving mode of the hybrid vehicle from an electric vehicle (EV) mode to a hybrid electric vehicle (HEV) mode when acceleration of the hybrid vehicle is predicted.

First claim

What is claimed is:

1. A method for controlling driving of a hybrid vehicle, comprising:
determining, by a controller, whether acceleration of the hybrid vehicle is predicted;
increasing, by the controller, a conversion reference value that converts a driving mode of the hybrid vehicle from an electric vehicle (EV) mode to a hybrid electric vehicle (HEV) mode when acceleration of the hybrid vehicle is predicted; and
operating, by the controller, the vehicle in the EV mode after the conversion reference value is increased,
wherein the controller is configured to determine whether acceleration of the hybrid vehicle is predicted based on a change rate of speed of the vehicle and a change rate of an acceleration pedal position sensor (APS) value that are generated during a predetermined driving time of the vehicle after the hybrid vehicle stops or decelerates to a predetermined speed.

2. The method of claim 1 , further comprising:
determining, by the controller, whether a slope of a road on which the vehicle is being driven is less than or equal to a threshold value,
wherein the controller is configured to predict acceleration of the vehicle when the slope is less than or equal to the threshold value.

3. The method of claim 1 , further comprising:
determining, by the controller, a type of a road on which the vehicle is being driven based on an average speed of the vehicle,
wherein the controller is configured to predict acceleration of the vehicle when the type of the road is determined as a street in a downtown area.

4. The method of claim 1 , further comprising:
determining, by the controller, a type of a road on which the vehicle is being driven based on an average speed of the vehicle,
wherein the controller is configured to predict acceleration of the vehicle when the type of the road is determined as an expressway.

5. A method for controlling driving of a hybrid vehicle, comprising:
determining, by a controller, whether acceleration of the hybrid vehicle is predicted;
increasing, by the controller, a conversion reference value that converts a driving mode of the hybrid vehicle from an electric vehicle (EV) mode to a hybrid electric vehicle (HEV) mode when acceleration of the hybrid vehicle is predicted; and
operating, by the controller, the vehicle in the EV mode after the conversion reference value is increased,
wherein the controller is configured to determine whether acceleration of the hybrid vehicle is predicted based on traffic signal information or precision map information received by the vehicle.

6. The method of claim 5 , further comprising:
determining, by the controller, a type of a road on which the vehicle is being driven based on precision map information,
wherein the controller is configured to predict acceleration of the vehicle when the type of the road is determined as a street in a downtown area.

7. The method of claim 5 , further comprising:
determining, by the controller, a type of a road on which the vehicle is being driven based on precision map information,
wherein the controller is configured to predict acceleration of the vehicle when the type of the road is determined as an expressway.

8. A system for controlling driving of a hybrid vehicle, comprising:
a memory configured to store program instructions; and
a processor configured to execute the program instructions, the program instructions when executed configured to:
determine whether acceleration of the hybrid vehicle is predicted; and
increase a conversion reference value converting a driving mode of the hybrid vehicle from an electric vehicle (EV) mode to a hybrid electric vehicle (HEV) mode when acceleration of the hybrid vehicle is predicted,
wherein the program instructions when executed are further configured to operate the vehicle in the EV mode after the conversion reference value is increased, and
wherein the program instructions when executed are further configured to determine whether acceleration of the hybrid vehicle is predicted based on a change rate of speed of the vehicle and a change rate of an acceleration pedal position sensor (APS) value that are generated during a predetermined driving time of the vehicle after the hybrid vehicle stops or decelerates to a predetermined speed.

9. The system of claim 8 , wherein the program instructions when executed are further configured to:
determine whether a slope of a road on which the vehicle is being driven is less than or equal to a threshold value; and
predict acceleration of the vehicle when the slope is less than or equal to the threshold value.

10. The system of claim 8 , wherein the program instructions when executed are further configured to:
determine a type of a road on which the vehicle is being driven based on an average speed of the vehicle; and
predict acceleration of the vehicle when the type of the road is determined as a street in a downtown area.

11. The system of claim 8 , wherein the program instructions when executed are further configured to:
determine a type of a road on which the vehicle is being driven based on an average speed of the vehicle; and
predict acceleration of the vehicle when the type of the road is determined as an expressway.

12. A system for controlling driving of a hybrid vehicle, comprising:
a memory configured to store program instructions; and
a processor configured to execute the program instructions, the program instructions when executed configured to:
determine whether acceleration of the hybrid vehicle is predicted; and
increase a conversion reference value converting a driving mode of the hybrid vehicle from an electric vehicle (EV) mode to a hybrid electric vehicle (HEV) mode when acceleration of the hybrid vehicle is predicted,

wherein the program instructions when executed are further configured to operate the vehicle in the EV mode after the conversion reference value is increased, and
wherein the program instructions when executed are further configured to determine whether acceleration of the hybrid vehicle is predicted based on traffic signal information or precision map information received by the vehicle.

13. The system of claim 12 , wherein the program instructions when executed are further configured to:
determine a type of a road on which the vehicle is being driven based on precision map information; and
predict acceleration of the vehicle when the type of the road is determined as a street in a downtown area.

14. The system of claim 12 , wherein the program instructions when executed are further configured to:
determine a type of a road on which the vehicle is being driven based on precision map information; and
predict acceleration of the vehicle when the type of the road is determined as an expressway.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Do Hee

Classifications

• B60W30/18027 Primary

  Drive off, accelerating from standstill · CPC title

• B60W40/076

  Slope angle of the road · CPC title

• B60W50/0097

  Predicting future conditions · CPC title

• B60Y2200/92

  Hybrid vehicles · CPC title

• B60W20/00 Primary

  Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)} · CPC title