US Patent 7909733 Clutch end-of-fill detection strategy

Patent 7909733 was granted and assigned to Caterpillar Inc. on March, 2011 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Caterpillar Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7909733

Date of Patent

March 22, 2011

Patent Application Number

11963204

Date Filed

December 21, 2007

Patent Primary Examiner

‌

David D. Le

Patent abstract

A system and method for controlling a hydraulic transmission uses a solenoid valve having a pressure sensor linked to the valve body operable to sense a hydraulic fluid pressure within a cavity of the valve body and to transmit an electrical signal based on the sensed pressure. The transmitted signal is used to identify the end of fill time, and thus to end a clutch fill phase and commence a clutch modulation or lock-up phase.

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