Method for operating a transmission device for a motor vehicle, and corresponding transmission device

Patent metadata

Field	Value
Publication number	US-10167910-B2
Application number	US-201515317733-A
Country	US
Kind code	B2
Filing date	Jun 9, 2015
Priority date	Jun 14, 2014
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A method for operating a transmission device for a motor vehicle, wherein the transmission device has an automatic clutch and a manual transmission. During one operation of the transmission device, the clutch is closed before a driving gear is engaged at the manual transmission if, when the clutch is at least partially open, actuation of the manual transmission is identified.

First claim

The invention claimed is:

1. A method for operating a drive device for a motor vehicle, comprising:
detecting an actuation of a manual transmission of a transmission device while an automatic clutch is in an at least partially opened state;
closing the automatic clutch of the transmission device of the motor vehicle on detection of the actuation before an engagement or disengagement of a driving gear at the manual transmission so that the engagement or disengagement of the driving gear is prevented; and
opening the automatic clutch a predetermined time after detecting the actuation of the manual transmission.

2. The method according to claim 1 , wherein the automatic clutch is closed only when the engagement of the driving gear is detected, which requires a transmission ratio that is greater than a maximum transmission ratio.

3. The method according to claim 2 , wherein the maximum transmission ratio is determined from an output shaft rotational speed and from a maximum input shaft rotational speed of the manual transmission.

4. The method according to claim 1 , wherein the closing of the automatic clutch is carried out only when a rotational speed of an output shaft is greater than a limiting rotational speed.

5. The method according to claim 1 , wherein an operating mode is a coasting operating mode.

6. The method according to claim 5 , wherein the automatic clutch is opened with an engagement of the operating mode.

7. The method according to claim 1 , wherein a neutral gear sensor or an all gear sensor is used to detect an actuation of the manual transmission.

Assignees

• Audi Ag

Inventors

• Schiergl Andreas

Classifications

• F16D2500/30808

  Detection of transmission in neutral · CPC title

• F16D2500/30806

  Engaged transmission ratio · CPC title

• B60W50/12

  Limiting control by the driver depending on vehicle state, e.g. interlocking means for the control input for preventing unsafe operation · CPC title

• B60W2540/16

  Ratio selector position · CPC title

• B60W2510/104

  Output speed · CPC title