CONTROLLER FOR AUTOMATIC TRANSMISSION

WIPO Patent Application WO/2010/038351

A1

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.

ASAI MASAHIRO (JP)
KUSABE KEIICHIROU (JP)

PCT/JP2009/004061

April 08, 2010

August 24, 2009

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AISIN AW CO (JP)
ASAI MASAHIRO (JP)
KUSABE KEIICHIROU (JP)

F16H61/02; F16H61/68; F16H61/684; F16H61/686; F16H63/50; F16H59/18; F16H59/44

JPH08238952A	1996-09-17
JP2006507459A	2006-03-02
JPH1182084A	1999-03-26
JPH03265754A	1991-11-26
JPH1148821A	1999-02-23
JPH0972414A	1997-03-18
JPH0920158A	1997-01-21
JP2001208194A	2001-08-03
JPH10325462A	1998-12-08
JPH1134689A	1999-02-09

CHIKASHIMA, Kazuo (JP)
近島 1 husband (JP)

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