Activation apparatus for a transmission of a motor vehicle

Patent metadata

Field	Value
Publication number	US-9410615-B2
Application number	US-201414249824-A
Country	US
Kind code	B2
Filing date	Apr 10, 2014
Priority date	Nov 28, 2011
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

An activation apparatus is provided for a transmission of a motor vehicle, having a gear selector that is moveable in at least one shift gate for selecting different drive program of the transmission, a control device with which the selection of at least one drive program of the transmission can be locked, and at least two sensors designed for detecting a gear selector activation. The control device is designed for determining the plausibility of signals detected by the sensors and for enabling the selection of the drive program on the basis of the plausibility determination.

First claim

What is claimed is:

1. An activation apparatus for a transmission of a motor vehicle, comprising:
a gear selector movable in at least one shift gate for selecting different drive programs of the transmission;
a control device operatively coupled with the gear selector, the control device being operable to lock a selection of at least one drive program of the different drive programs of the transmission;
at least two sensors of differing types designed for detecting a gear selector activation, the at least two sensors being coupled with the control device; and
wherein the control device is designed to determine a plausibility of detection signals from the at least two sensors, wherein the detection signals include one or more of: (i) a plausible detection signal indicating that the gear selector activation was intended and (ii) an implausible detection signal indicating that the gear selector activation was unintended or improper, and to unlock the selection of the at least one drive program as a function of the plausibility determination.

2. The activation apparatus according to claim 1 , wherein the control device is designed to unlock the selection of the at least one drive program as a function of a predetermined signal pattern of the detection signals from the at least two sensors.

3. The activation apparatus according to claim 1 , further comprising:
an activation device arranged on or adjacent to the gear selector, the activation device being operable to activate and/or deactivate a parking lock.

4. The activation apparatus according to claim 1 , wherein one of the at least two sensors is a capacitive proximity sensor.

5. The activation apparatus according to claim 4 , wherein other one of the at least two sensors is an optical sensor arranged to detect arm movement.

6. The activation apparatus according to claim 5 , wherein the control device is designed to unlock the selection of the at least one drive program as a function of a predetermined signal pattern of the detection signals from the at least two sensors.

7. The activation apparatus according to claim 6 , further comprising:
an activation device arranged on or adjacent to the gear selector, the activation device being operable to activate and/or deactivate a parking lock.

8. The activation apparatus according to claim 1 , wherein one of the at least two sensors is arranged on or adjacent to the gear selector.

9. The activation apparatus according to claim 8 , wherein the one of the at least two sensors is a capacitive proximity sensor.

10. The activation apparatus according to claim 8 , wherein the one of the at least two sensors is an optical sensor arranged to detect arm movement.

11. A method of operating a control device that locks and unlocks a selection of a drive program of a transmission of a motor vehicle, the method comprising the acts of:
receiving, by the control device, detection signals from at least two sensors designed to detect a gear selector activation;
determining, by the control device, a plausibility of the detection signals from the at least two sensors, wherein the detection signals include one or more of: (i) a plausible detection signal indicating that the gear selector activation was intended and (ii) an implausible detection signal indicating that the gear selector activation was unintended or improper; and
unlocking the selection of the drive program of the transmission as a function of the plausibility determination.

12. The method according to claim 11 , wherein the selection of the drive program is unlocked when a detection signal from at least one predetermined sensor of the at least two sensors exceeds or falls below a defined threshold value.

13. The method according to claim 11 , wherein the selection of the drive program is unlocked when a detection signal from at least one sensor of the at least two sensors exceeds or falls below a defined threshold value during a predetermined time period.

14. The method according to claim 11 , wherein the act of determining the plausibility is carried out by determining that the detection signals from the at least two sensors correspond to a predetermined signal pattern, in which case the selection of the drive program is unlocked.

15. The method according to claim 14 , wherein the selection of the drive program is unlocked when a detection signal from at least one predetermined sensor of the at least two sensors exceeds or falls below a defined threshold value.

16. The method according to claim 14 , wherein the selection of the drive program is unlocked when a detection signal from at least one sensor of the at least two sensors exceeds or falls below a defined threshold value during a predetermined time period.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Lindner Matthias
• Tille Thomas

Classifications

• Y10T74/2003

  Electrical actuator · CPC title

• F16H59/105 Primary

  consisting of electrical switches or sensors · CPC title

• F16H61/18

  Preventing unintentional or unsafe shift {, e.g. preventing manual shift from highest gear to reverse gear} · CPC title

• F16H2059/0221

  for selecting modes, e.g. sport, normal, economy · CPC title