Method and device for controlling a gearshift mechanism

• US 20060272436A1
• Filed: 05/25/2006
• Published: 12/07/2006
• Est. Priority Date: 06/02/2005
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Norum, Viggio L., Svenkerud, Christer, Gjerpe, Ole Andre, Lein, Lars, Royland, Jan Gunnar, Waerp, Ole Jonny
• Granted Patent: US 8,584,544 B2
• Time in Patent Office: Days
• US Class Current: 74/335
• CPC Class Codes: F16H 61/28 with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
• CPC Class Codes: F16H 61/688 with two inputs, e.g. selection of one of two torque-flow paths by clutches
• CPC Class Codes: Y10T 74/19251 Control mechanism
• CPC Class Codes: Y10T 74/20067 Control convertible between automatic and manual operation

Abstract

In a method for controlling a gearshift mechanism, the gearshift mechanism having at least one shifting element, a clutch release element, a shift actuator and a selector actuator, in which the shifting element is movable by the selector actuator along a selector track, and is movable from the selector track at sites spaced from each other by means of the shift actuator into shift tracks for engagement of a gear, and the clutch release element is coupled to the shifting element, so that during engagement of the new gear, it disengages a previously engaged gear, the shifting element, after engagement of a gear, is moved by the shift actuator in the direction toward the selector track into a rest position right in front of the discharge of the shift track into the selector track, in which it remains, until it is moved for engagement of a new gear.

Claims

1. A method for controlling a gearshift mechanism, said gearshift mechanism having at least one shifting element, a clutch release element, a shift actuator and a selector actuator, in which the shifting element is movable by the selector actuator along a selector track, and is movable from the selector track at sites spaced from each other into shift tracks by means of the shift actuator for engagement of a gear, and the clutch release element is coupled to the shifting element, so that during engagement of a new gear, it disengages a previously engaged gear, comprising the step of moving the shifting element by the shift actuator, after engagement of a gear, in the direction toward the selector track into a rest position right in front of the discharge of the shift track into the selector track, in which it remains, until it is moved for engagement of a new gear.

2. The method according to claim 1, wherein the shifting element is moved by the shift actuator during or immediately after engagement of a gear by additional movement against an end stop at the end of the shift track belonging to the engaged gear and, after reaching the rest position, is moved by the selector actuator against the side edge of the shift track.

3. A device for controlling a gearshift mechanism, said gearshift mechanism comprising at least one shifting element (111), a clutch release element (113, 116) and a selector actuator (32, 34), a shift actuator (36, 38), in which the shifting element is movable by the selector actuator along a selector track, and is movable from the selector track at sites spaced from each other by means of the shift actuator into shift tracks (S₁, S₂, S₃) for engagement of a gear, and the clutch release element is coupled to the shifting element, so that during engagement of a new gear, it disengages a previously engaged gear, said device containing sensors to record the position of the shifting element and a control device (40) to control the selector actuator and the shift actuator, characterized by the fact that the control device (40) controls the selector actuator (32, 34) and the shift actuator (36, 38) to move the shifting element by the shift actuator, after engagement of a gear, in the direction toward the selector track into a rest position right in front of the discharge of the shift track into the selector track, in which it remains, until it is moved for engagement of a new gear.

4. The device according to claim 3, wherein the shifting element is moved by the shift actuator during or immediately after engagement of a gear by additional movement against an end stop at the end of the shift track belonging to the engaged gear and, after reaching the rest position, is moved by the selector actuator against the side edge of the shift track.