Method for adjusting the ratio of transmission in a continuous variable transmission

• Main Authors: SCHWENGER ANDREAS, DANZ WOLFGANG, PIEPENBRINK ANDREAS
• Format: Patent
• Language: English
• Published: 22.07.2003
• Edition: 7
• Subjects: 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

Within the scope of the method for adjusting the ratio value for a continuously variable transmission having a variator, a minimum contact pressure force P1,min, and/or P2,min is continuously calculated for the two variator discs on the basis of the actual ratio and of the actual torque to be transmitted and according to the calculated contact pressure minimum force the primary or the secondary disc is determined as controlled variable to be used for the variator ratio, the controlled variable being determined by a comparison of the required pressure values P1,soll or P2,soll with the calculated contact-pressure minimum value in a manner such that if P1,soll<=P1,min, the controlled variable changes from the primary to the secondary side and if the condition P2,soll<=P2,min is fulfilled, the secondary side changes to the primary side, the primary side being the controlled variable at the start of the method.