Shift control system and method for automatic transmissions

Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position

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Details

475276, 475281, F16H 146, F16H 5914

Patent

active

050883542

ABSTRACT:
A shift control system and a system control method for use in an automatic transmission includes: an input shaft, an output shaft, a gear train including a plurality of revolving components and arranged between the input shaft and the output shaft, a plurality of clutches for connecting either the input shaft and any of the revolving components or the revolving components selectively, a plurality of brakes for stopping revolution of the revolving components selectively, and a one-way clutch belonging to any of the clutches and the brakes. Any of the speed stages is set according to at least two of a combination pattern of engagement/release of the clutches and brakes for engaging the one-way clutch and a combination pattern of engagement/release of clutches and brakes for releasing the one-way clutch. The combination patterns are always selected so as to switch the one way clutch.

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