Multi-ratio automatic transmission with independent rate of engagement and/or disengagement control of friction elements

Multi-ratio automatic transmission with independent rate of engagement and/or disengagement control of friction elements

A multi-ratio automatic transmission (10) for a vehicle, the transmission (10) having at least one planetary gear set (16, 18), a plurality of friction elements (C1, C2, C3, B1, B2) for coupling components of the planetary gear set (16, 18) between an input and an output of the transmission in diffe...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SMITH, SIMON, PRIZMIC, SANDI, KRUPIC, ROBERT, FIRTH, DARREN LEE, TAMBA, RICHARD TERRENCE, QIU, LING, TAPPER, STEPHEN, DONNELLY, PAUL ANTHONY, MOREY, JOHN, BAUER, FRANK, LIU, KENT JIAN
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
ENGINEERING ELEMENTS AND UNITS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
THERMAL INSULATION IN GENERAL
WEAPONS
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Beschreibung
Zusammenfassung:A multi-ratio automatic transmission (10) for a vehicle, the transmission (10) having at least one planetary gear set (16, 18), a plurality of friction elements (C1, C2, C3, B1, B2) for coupling components of the planetary gear set (16, 18) between an input and an output of the transmission in different configurations so as to achieve a plurality of drive ratios, and a control system (26) for selectively engaging/disengaging the friction elements (C1, C2, C3, B1, B2) in different combinations to effect selection of the ratios, wherein rate of engagement and/or disengagement of one or more of the friction elements (C1, C2, C3, B1, B2) is controlled independently of the or each of the other friction element(s) (C1, C2, C3, B1, B2).