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Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
December 9, 2008
0Patent Application Number
113336010
Date Filed
January 17, 2006
0Patent Primary Examiner
Patent abstract
A pressure control system of an automatic transmission includes a control-pressure regulating valve, a path switching valve, and a coupling-pressure regulating valve. The path switching valve selectively outputs a control pressure or a line pressure, so that the coupling-pressure regulating valve regulates a coupling pressure based on the control pressure during gear shifting, and regulates the coupling pressure based on the line pressure after completion of the gear shifting.
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