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1. WO2017132315 - METHOD FOR SLIP AVOIDANCE IN A BALL PLANETARY TYPE CONTINUOUSLY VARIABLE TRANSMISSION

Publication Number WO/2017/132315
Publication Date 03.08.2017
International Application No. PCT/US2017/015037
International Filing Date 26.01.2017
IPC
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
61
Control functions within change-speed- or reversing-gearings for conveying rotary motion
66
specially adapted for continuously variable gearings
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
61
Control functions within change-speed- or reversing-gearings for conveying rotary motion
66
specially adapted for continuously variable gearings
664
Friction gearings
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
15
Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
02
without members having orbital motion
04
Gearings providing a continuous range of gear ratios
06
in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
26
in which the member B has a spherical friction surface centered on its axis of revolution
28
with external friction surface
F16H 61/66 (2006.01)
F16H 61/664 (2006.01)
F16H 15/28 (2006.01)
CPC
F16H 15/28
F16H 15/503
F16H 2059/147
F16H 2059/366
F16H 2059/702
F16H 2059/704
Applicants
  • DANA LIMITED [US/US]; 3939 Technology Drive PO Box 1000 Maumee, OH 43537, US
Inventors
  • DAVID, Jeffrey, M.; US
  • MCINDOE, Gordon, M.; US
  • MCLEMORE, Thomas, Neil; US
  • SEXTON, Patrick; US
  • SIMISTER, Matthew; US
  • SMITHSON, Robert, A.; US
Agents
  • WANSTRATH PERRY, Kara, Y.; US
  • SCHURR, Donald, A.; US
  • EVANS, Stephen, P.; US
  • ZERONIAS, Michael, D.; US
  • MERRILL, Jacob, D.; US
Priority Data
62/287,30926.01.2016US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR SLIP AVOIDANCE IN A BALL PLANETARY TYPE CONTINUOUSLY VARIABLE TRANSMISSION
(FR) PROCÉDÉ PERMETTANT D'ÉVITER UN GLISSEMENT DANS UNE TRANSMISSION À VARIATION CONTINUE DE TYPE PLANÉTAIRE À BILLES
Abstract
(EN)
Provided herein is a control system for a multiple-mode continuously variable transmission having a ball planetary variator. The control system has a transmission control module configured to receive a plurality of electronic input signals, and to determine a mode of operation from a plurality of control ranges based at least in part on the plurality of electronic input signals. The system also has a dither control module configured to store at least one calibration map, and configured to determine an oscillating change in speed ratio applied to a commanded speed ratio signal during operation of the CVP to manage thermal and mechanical stress on the surface of the ball.
(FR)
La présente invention concerne un système de commande pour une transmission à variation continue à modes multiples possédant un variateur planétaire à billes. Le système de commande possède un module de commande de transmission conçu pour recevoir une pluralité de signaux électroniques d'entrée, et pour déterminer un mode de fonctionnement à partir d'une pluralité de plages de commande sur la base, au moins en partie, de la pluralité de signaux électroniques d'entrée. Le système comprend également un module de commande de signal de superposition configuré pour stocker au moins une carte d'étalonnage, et pour déterminer un changement de rapport de vitesse oscillant, appliqué à un signal de rapport de vitesse commandé pendant le fonctionnement de la transmission à variation continue, pour gérer les contraintes thermiques et mécaniques à la surface de la bille.
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