IP Library Granted Patent US 7,275,455
Granted Patent B2
US 7,275,455 · App. 10/489,571 · Granted Oct 2, 2007

Automatic gear system

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Quick Facts
Patent No.
US 7,275,455
App. No.
10/489,571
Granted
Oct 2, 2007
Kind
B2
Abstract

The present invention broadly comprises a method for the control of a gear engagement mechanism of an automated multiple-ratio transmission having at least one drive shaft and at least one output shaft, including assigning a synchronizer to at least one gear step, applying a load to the synchronizer in order to engage or disengage a gear step of the transmission, and varying the load that is applied to the synchronizer as a function of the service life of the transmission system.

Claims (6)

1. A method for the control of a gear engagement mechanism of an automated multiple-ratio transmission having at least one drive shaft and at least one output shaft, comprising:

assigning a synchronizer to at least one gear step;

applying a load to the synchronizer in order to engage or disengage a gear step of the transmission; and,

varying the load that is applied to the synchronizer as a function of a transmission parameter, in which the load that acts on the synchronizer is controlled as a function of the difference of a to-be-detected value of the transmission parameter and a pre-determined optimal value of the transmission parameter.

2. The method as described in claim 1 , in which the load that acts on the synchronizer is incrementally controlled, the load being increased by an increment if the rate of the transmission parameter is below the predetermined optimal value, and the load being reduced by an increment if the rate of the transmission parameter is above the predetermined optimal value.

3. The method as described in claim 1 , in which the predetermined optimal rate changes from a first synchronizer to at least one other provided synchronizer.

Assignments (6)
CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258. Recorded Oct 11, 2016
From: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 040404/0530 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 5, 2016
From: LUK VERMÖGENSVERWALTUNGS GESELLSCHAFT MBH
To: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Reel/Frame 037731/0748 →
CHANGE OF NAME Recorded Feb 5, 2016
From: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 037731/0834 →
MERGER AND CHANGE OF NAME Recorded Feb 5, 2016
From: SCHAEFFLER TECHNOLOGIES AG & CO. KG; SCHAEFFLER VERWALTUNGS 5 GMBH
To: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Reel/Frame 037732/0228 →
CHANGE OF NAME Recorded Feb 5, 2016
From: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
To: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Reel/Frame 037732/0347 →
MERGER Recorded Feb 3, 2016
From: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KG
To: LUK VERMÖGENSVERWALTUNGS GESELLSCHAFT MBH
Reel/Frame 037740/0589 →