VARIATOR TRACTION CONTROL ARRANGEMENT

A fraction control arrangement for a variator (10) with a pair of races (12, 14, 26) and at least one roller (28) which transfers drive from one to the other. The roller is movably mounted. Its motion enables the speed of one race to be varied relative to the speed of the other race. The variator ha...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	FULLER, JOHN WILLIAM EDWARD
Format:	Patent
Sprache:	eng ; fre ; ger
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 fraction control arrangement for a variator (10) with a pair of races (12, 14, 26) and at least one roller (28) which transfers drive from one to the other. The roller is movably mounted. Its motion enables the speed of one race to be varied relative to the speed of the other race. The variator has a hydraulic traction load actuator (117) which receives a hydraulic traction load pressure and in response urges the races and the rollers into engagement in order to provide traction between them. At least one hydraulic roller control actuator (32) receives opposed first and second reaction pressures and in response to apply a reaction force to the roller. A traction control valve (119, 119a) controls the traction load pressure and is operable in at least two modes. The relationship between traction load pressure and reaction force is different in the two modes.