Title:
BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
Japanese Patent JP2010249302
Kind Code:
A
Abstract:
To provide a belt type continuously variable transmission, improving reliability on products by effectively performing a fail safe of a hydraulic fluid supply/discharge valve.
In this belt type continuously variable transmission 22, a hydraulic fluid supply/discharge valve 110 is opened when a change gear ratio changes, and an oil pressure control device 130 supplies the hydraulic fluid at a predetermined supply oil pressure Pin to a movable sheave 53. The movable sheave 53 is thereby driven to control the pinching pressure of a belt 80. When holding operation in the state of opening the hydraulic fluid supply/discharge valve 110 is failed, the oil pressure Pin to be supplied is reduced.
Inventors:
KAWAKAMI TAKAO
FUJIMURA MASAYA
YOKOGAWA TAKAHIRO
HATTORI TAKEHITO
FUJIMURA MASAYA
YOKOGAWA TAKAHIRO
HATTORI TAKEHITO
Application Number:
JP2009102359A
Publication Date:
November 04, 2010
Filing Date:
April 20, 2009
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H61/12; F16H9/18; F16H59/68; F16H61/662
Domestic Patent References:
| JP2008101732A | 2008-05-01 | |||
| JP2001065684A | 2001-03-16 | |||
| JP2004204944A | 2004-07-22 | |||
| JPH084864A | 1996-01-12 | |||
| JP2008101732A | 2008-05-01 | |||
| JP2001065684A | 2001-03-16 | |||
| JP2004204944A | 2004-07-22 | |||
| JPH084864A | 1996-01-12 |
Attorney, Agent or Firm:
Hiroaki Sakai
Kenta Ito
Kenta Ito