Method for controlling automotive transmission

Patent metadata

Field	Value
Publication number	US-9976648-B2
Application number	US-201615139689-A
Country	US
Kind code	B2
Filing date	Apr 27, 2016
Priority date	Nov 30, 2015
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

An automotive transmission has a hill-hold (H) mode for preventing a vehicle parked on a slope from rolling downward, a reverse (R) mode, a neutral (N) mode, and a drive (D) mode, in which a H position and a R-range are arranged next to and connected to each other in a shift gate.

First claim

What is claimed is:

1. A method for controlling an automotive transmission that has an hill-hold (H) mode, a reverse (R) mode, a neutral (N) mode, and a drive (D) mode, in which a H position and an R position are arranged next to and connected to each other in a shift gate, the method comprising:
performing an R-gear, by a controller, to be engaged with a shift lever at the H position.

2. The method of claim 1 , wherein when an engine stops with the shift lever at the H position, the R-gear remains engaged.

3. The method of claim 1 , wherein when an engine stops with the shift lever at the R position, an N-gear is engaged.

4. The method of claim 1 , wherein when an engine stops with the shift lever at the H position, the engine does not start.

5. The method of claim 1 , wherein when an engine stops with the shift lever at the H position, a warning of preventing a vehicle from moving due to an external force is generated.

6. The method of claim 1 , wherein when the shift lever moves to an N position, a previously engaged gear remains engaged.

7. The method of claim 6 , wherein when the shift lever moves from the R position to the N position, the R-gear remains engaged, and
when the shift lever moves from a D position to the N position, one of gears available for the D position remains engaged.

8. The method of claim 6 , wherein when the shift lever moves from a D position to the N position, a first gear is engaged.

9. The method of claim 1 , wherein when an engine stops with the shift lever at an N position, an N-gear is engaged.

10. The method of claim 1 , wherein when an engine stops with the shift lever at a D position, an N-gear is engaged.

11. The method of claim 1 , wherein the R-gear is engaged or disengaged by a gear actuator which is controlled in response to a control signal from the controller.

12. The method of claim 1 , wherein the automotive transmission is an automated manual transmission (AMT).

13. An automotive transmission comprising:
a shift gate having a hill-hold (H) position, a reverse (R) position, a neutral (N) position, and a drive (D) position, in which the H position and the R position are arranged next to and connected to each other; and
a controller configured to engage an R-gear at the H position.

14. The automotive transmission of claim 13 , wherein the shift gate has a sequential shift pattern of H-R-N-D positions.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Yoon Young Min
• Cheong Seong Hwan
• Cho Hyung Wook

Classifications

• F16H59/10

  comprising levers · CPC title

• F16H63/40

  comprising signals other than signals for actuating the final output mechanisms · CPC title

• F16H61/20 Primary

  Preventing gear creeping {; Transmission control during standstill, e.g. hill hold control} · CPC title