Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CONTROLLER FOR AUTOMATIC TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2010/038351
Kind Code:
A1
Abstract:
A sustaining output calculation means (33) calculates a sustaining output needed for sustaining a vehicular velocity based on a travel resistance, and a requested output calculation means (32) calculates a requested output based on an accelerator opening, for example. Meanwhile, a maximum output calculation means (40) calculates the current gear ratio maximum output as the maximum output of the vehicle at the current gear ratio based on the maximum output characteristic of an engine (2), and a post-upshift maximum output as the maximum output of the vehicle at the gear ratio after the gear is upshifted. Then, downshifting is determined when a first value calculated based on the sustaining output, the requested output, and the excess output has become greater than a second value calculated based on the current gear ratio maximum output, and upshifting is determined when a third value calculated based on the sustaining output, the requested output, and the excess output has become smaller than a fourth value calculated based on the post-upshift maximum output. Selection of the gear ratio based on aforementioned calculations is enabled in order to facilitate further improvement of the fuel efficiency.

Inventors:
ASAI MASAHIRO (JP)
KUSABE KEIICHIROU (JP)
Application Number:
JP2009/004061
Publication Date:
April 08, 2010
Filing Date:
August 24, 2009
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
AISIN AW CO (JP)
ASAI MASAHIRO (JP)
KUSABE KEIICHIROU (JP)
International Classes:
F16H61/02; F16H61/68; F16H61/684; F16H61/686; F16H63/50; F16H59/18; F16H59/44
Foreign References:
JPH08238952A1996-09-17
JP2006507459A2006-03-02
JPH1182084A1999-03-26
JPH03265754A1991-11-26
JPH1148821A1999-02-23
JPH0972414A1997-03-18
JPH0920158A1997-01-21
JP2001208194A2001-08-03
JPH10325462A1998-12-08
JPH1134689A1999-02-09
Attorney, Agent or Firm:
CHIKASHIMA, Kazuo (JP)
近島 1 husband (JP)
Download PDF: