Shift control apparatus and method of hybrid vehicle

Patent metadata

Field	Value
Publication number	US-9446762-B2
Application number	US-201414554248-A
Country	US
Kind code	B2
Filing date	Nov 26, 2014
Priority date	Aug 12, 2014
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A shift control system and method of a hybrid vehicle are provided and controlled by dualizing a brake shift pattern based on whether an engine clutch release is possible when a hybrid vehicle brake is engaged. The system includes a hybrid controller that is configured to detect whether engine clutch release is possible, based on battery state information and input data from a operation. In addition, a shift controller is configured to execute a gear shift by a brake shift pattern based on whether the engine clutch release is possible.

First claim

What is claimed is:

1. A shift control apparatus of a hybrid vehicle, comprising:
a hybrid controller configured to determine whether engine clutch is released or not, based on battery state information and input data from a operation; and
a shift controller configured to execute a gear shift by a brake shift pattern different according to determining whether the engine clutch is released or not, when a brake is detected during a driving of the hybrid vehicle,
wherein the shift controller is configured to execute the gear shift by an engine brake shift pattern when release of the engine clutch is not determined.

2. A shift control apparatus of a hybrid vehicle according to claim 1 , wherein the hybrid controller is configured to determine a state which the engine clutch is not released when the battery is in a reduced temperature state or a charging state is less than a threshold level.

3. A shift control apparatus of a hybrid vehicle according to claim 1 , wherein the hybrid controller is configured to determine a state which the engine clutch is not released when a transmission mode selection switch or a forced charging mode selection switch is turned on.

4. A shift control apparatus of a hybrid vehicle according to claim 1 , wherein the shift controller is configured to execute the gear shift by a motor brake shift pattern when release of the engine clutch is determined.

5. A shift control method of a hybrid vehicle, comprising:
determining, by a controller, whether engine clutch is released or not when a brake is detected during driving of the vehicle;
executing, by the controller, a gear shift by a brake shift pattern different according to determining whether the engine clutch is released or not, when the brake is detected during a driving of the hybrid vehicle; and
executing, by the controller, the gear shift by an engine brake shift pattern when release of the engine clutch is not determined.

6. A shift control method of a hybrid vehicle according to claim 5 , further comprising:
determining, by the controller, that the engine clutch is not released when the battery is in a reduced temperature state or a charging state is less than a threshold level.

7. A shift control method of a hybrid vehicle according to claim 5 , further comprising:
determining, by the controller, that the engine clutch is not released when a transmission mode selection switch or a forced charging mode selection switch is turned on.

8. A shift control method of a hybrid vehicle according to claim 5 , further comprising:
executing, by the controller, the gear shift by a motor brake shift pattern when release of the engine clutch is determined.

9. A non-transitory computer readable medium containing program instructions executed by a controller, the computer readable medium comprising:
program instructions that determine whether engine clutch is released or not when a brake is detected during driving of the vehicle;
program instructions that detect a gear shift by a brake shift pattern different according to determining whether the engine clutch is released or not, when a brake is detected during a driving of a hybrid vehicle; and
program instructions that execute the gear shift by an engine brake shift pattern when release of the engine clutch is not determined.

10. The non-transitory computer readable medium of claim 9 , further comprising:
program instructions that determine that the engine clutch is not released when the battery is in a reduced temperature state or a charging state is less than a threshold level.

11. The non-transitory computer readable medium of claim 9 , further comprising:
program instructions that determine that the engine clutch is not released when a transmission mode selection switch or a forced charging mode selection switch is turned on.

12. The non-transitory computer readable medium of claim 9 , further comprising:
program instructions that execute the gear shift by a motor brake shift pattern when release of the engine clutch is determined.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Lee Seung Han
• Lee Soo Bang
• Oh Kyoung Cheol
• Song Jun Geol
• Park Seong Ik
• Huh Jee Wook

Classifications

• B60K6/48 Primary

  Parallel type · CPC title

• B60W2510/244

  Charge state · CPC title

• B60W2510/246

  Temperature · CPC title

• B60W2710/021

  Clutch engagement state · CPC title

• B60W10/10 Primary

  including control of change-speed gearings · CPC title