Title:
SHIFT HYDRAULIC CONTROL DEVICE OF AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP3900763
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a suitable shift hydraulic control responsive to an input torque even when a running environment such as altitude changes to change an engine output corresponding to throttle opening.
SOLUTION: When shirt is determined in a step 72, in steps 74, 75 it is checked whether this shift is 1→2 shift following switching from an engagement state of a low one-way clutch to its release state following switching from a fixing state of corresponding rotation member to a release state), or 2→3 shift following switching from a fastening state of a band brake to a release state (following switching from a fixing state of corresponding rotation member to a release state). In the 1→2 shift, a low one-way clutch repulsion FL is read in a step 77, and a line pressure PL corresponding to he low one-way clutch repulsion FL is determined based on a schedule map in a step 78. In the 2→3 shift, a band brake repulsion FB is read in a step 79, and a line pressure PL corresponding to the band brake repulsion FB is determined based on the schedule map in a step 80. In a step 81, a duty D for generating the determined line pressure PL is outputted to a line pressure solenoid.
Inventors:
Yasuhiro Yamauchi
Application Number:
JP32072399A
Publication Date:
April 04, 2007
Filing Date:
November 11, 1999
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F16H61/06; F16H59/68; F16H59/70; F16H61/686; (IPC1-7): F16H61/06; F16H59/68; //F16H59:70; F16H63:12
Domestic Patent References:
| JP58225251A | ||||
| JP4019465A | ||||
| JP11037264A | ||||
| JP7110063A | ||||
| JP5133457A | ||||
| JP9054002A |
Attorney, Agent or Firm:
Kosaku Sugimura
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