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Title:
CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
Japanese Patent JP2011163486
Kind Code:
A
Abstract:

To provide a structure preventing a driving source (engine) from being operated beyond a tolerance limit even if a transmission is not operated by a driver while operating the driving source in a manual transmission mode selected out of an automatic transmission mode and the manual transmission mode.

In the state where the speed ratio has been set corresponding to the gear ratio selected by a driver, if continuing the operation with the speed ratio unchanged, when the rotating speed of the driving source, e.g., is determined to go beyond the maximum tolerable rotating speed, the speed ratio is allowed to be automatically increased from the speed ratio corresponding to the present gear ratio despite the fact that the manual transmission mode has been selected. When the rotating speed of the driving source, e.g., is determined to become lower than the minimum tolerable rotating speed, the speed ratio is allowed to be automatically decreased from the speed ratio corresponding to the present gear ratio likewise despite the fact that a manual transmission function has been selected.


Inventors:
SHINOJIMA TAKUMI
Application Number:
JP2010028513A
Publication Date:
August 25, 2011
Filing Date:
February 12, 2010
Export Citation:
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Assignee:
NSK LTD
International Classes:
F16H61/04; F16H15/38; F16H61/18; F16H63/50; F16H59/18; F16H59/40; F16H59/42; F16H61/664
Domestic Patent References:
JP2005042768A2005-02-17
JP2003185004A2003-07-03
JPH1113875A1999-01-22
JPH07301321A1995-11-14
JP2009204136A2009-09-10
JPH09196165A1997-07-29
JP2005042768A2005-02-17
Attorney, Agent or Firm:
Kiwa Patent Office



 
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