Patent · US Expired

Pretensioning force adjustment of continuously variable transmission

US5556346A · kind A · utility

6Cited by

11References

11Claims

0Family size

Assignee

Temic Telefunken Microelectronik · DE

Inventors

Michael Genzel · Roßtal, DE
Gerhard Hettich · Roßtal, DE
Norbert Ramm · Braunschweig, DE

Key dates

Filing date	May 15, 1995
Grant date	Sep 17, 1996
Priority date	—
Expiry date	May 15, 2015

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/66272
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A process to adjust the pretensioning force for the transmission element of a continuously variable transmission, complete with two disc assemblies comprising two discs each, will be described. For optimized specification of the pretensioning force, the following process steps will be provided: PA1 a) determining transmission element length, PA1 b) specifying a start value for the pretensioning force, PA1 c) reducing the pretensioning force and determining transmission element virtual length, PA1 d) determining transmission element slip status by comparing actual length and virtual length of the transmission element, PA1 e) changing pretensioning force in relation to slip status, whereby, if actual length and virtual length of the transmission element correspond, the pretensioning force will be decreased, and, if actual length and virtual length of the transmission element differ, the pretensioning force will be increased.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.