Method and apparatus for clutch pressure control

A method, apparatus and system for controlling transmission clutch and/or variator system pressures is provided. A transmission control unit and a pressure control device including an electro-hydraulic valve and a pressure switch cooperate to provide self-calibrating clutch and/or variator pressure...

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Bibliographische Detailangaben
Hauptverfasser:	Wilson, Thomas H, Brown, Travis A, Weber, Darren J, Long, Charles F
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS 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 method, apparatus and system for controlling transmission clutch and/or variator system pressures is provided. A transmission control unit and a pressure control device including an electro-hydraulic valve and a pressure switch cooperate to provide self-calibrating clutch and/or variator pressure control systems. Friction devices, such as clutches and brakes, of an automatic transmission of a vehicle are selectively engageable and disengageable to change gear ratios or alter the speed of the vehicle.