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Title:
ELECTRONIC CONTROLLER FOR A CVT RATIO
Document Type and Number:
WIPO Patent Application WO/2013/056237
Kind Code:
A3
Abstract:
A continuously variable transmission (CVT) is provided for use on a recreational or utility vehicle. The CVT is electronically controlled by at least one control unit of the vehicle. The CVT includes a primary pulley (50) having a first sheave (100) and a second sheave (102)moveable relative to the first sheave. An actuator controls movement of the second sheave. The method includes: determining a speed of the engine (452); detecting a throttle demand (458); determining a pulley control variable (K-Factor) based on an operator input device (111), the CVT including a first and a second pulley, the first pulley (50) being moveable by an actuator (76) to modulate a gear ratio of the CVT; calculating a target engine speed (460) based on the throttle demand and the pulley control variable; and calculating a target position (470) of the first pulley of the CVT based on the calculated target engine speed and the determined speed of the engine.

Inventors:
NELSON STEPHEN L (US)
GILLINGHAM BRIAN R (US)
WENGER URS (CH)
FREDRICKSON DONOVAN L (US)
KROSSCHELL BRIAN D (US)
GRAJKOWSKI KARL (US)
MEYER PHILIPP (CH)
FROST DONALD E (US)
KOHLER BEAT (CH)
ZURBRUEGG RONALD (CH)
ERASMUS PETER J (CH)
PETERMAN JEFFREY IVAN (US)
Application Number:
PCT/US2012/060269
Publication Date:
August 29, 2013
Filing Date:
October 15, 2012
Export Citation:
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Assignee:
POLARIS INC (US)
International Classes:
B60W30/188; B60W10/02; B60W10/06; B60W10/107; B60W50/08; F16H9/18; F16H61/662; F16H59/08; F16H59/36
Foreign References:
US20110166755A12011-07-07
US5514046A1996-05-07
US20050096822A12005-05-05
US4622865A1986-11-18
EP0421241A21991-04-10
EP1865227A12007-12-12
US5976054A1999-11-02
US20110160969A12011-06-30
DE10231210A12004-01-22
Attorney, Agent or Firm:
GROEN, Eric, J. (300 North Meridian StreetSuite 270, Indianapolis IN, US)
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