Title:
HYDRAULIC CONTROL CIRCUIT OF VEHICLE POWER TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2016056868
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic control circuit of a vehicle power transmission device which can suppress the deterioration of drivability at a fail of an electromagnetic valve related to power transmission.SOLUTION: Since earth cables Wpg, Wsg are made common in use between a drive-side pulley electromagnetic valve SLP and a driven-side pulley electromagnetic valve SLS, when there occurs breakage or a shortcircuit in a common portion, a drive-side pulley 44 and a driven-side pulley 48 exhibit substantially the same behaviors. By this constitution, a change of a gear change ratio γcvt of a continuously variable transmission 26 is suppressed, and the deterioration of drivability at a fail of the electromagnetic valves SLP, SLS related to power transmission can be suppressed.SELECTED DRAWING: Figure 2
Inventors:
INAGAKI TAKAFUMI
SOGA YOSHINOBU
MORIYAMA SHUJI
MIZUNO YOSHIHIRO
NITANI HIROMITSU
SOGA YOSHINOBU
MORIYAMA SHUJI
MIZUNO YOSHIHIRO
NITANI HIROMITSU
Application Number:
JP2014183462A
Publication Date:
April 21, 2016
Filing Date:
September 09, 2014
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H61/00; F16H61/12; F16H61/662
Domestic Patent References:
| JP2009257528A | 2009-11-05 | |||
| JPS58133935A | 1983-08-09 | |||
| JP2009257528A | 2009-11-05 | |||
| JPS58133935A | 1983-08-09 | |||
| JP2010249230A | 2010-11-04 | |||
| JP2010249230A | 2010-11-04 |
Foreign References:
| EP0699851A1 | 1996-03-06 | |||
| EP0699851A1 | 1996-03-06 |
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda