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Title:
TRANSMISSION GEAR RATIO CONTROL DEVICE AND TRANSMISSION GEAR RATIO CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2013/150848
Kind Code:
A1
Abstract:
The transmission control device of automatic vehicle transmissions calculates a minimum engine rotation speed on the basis of the road load and sets the target transmission gear ratio so that the engine rotation speed does not fall below the minimum engine rotation speed. By using a higher value for the minimum engine rotation speed when the vehicle road load is at or above a specified value compared to when the road load is not, re-acceleration performance for large road loads such as traveling uphill while towing another vehicle is achieved.

Inventors:
INOUE JUN (JP)
Application Number:
PCT/JP2013/055908
Publication Date:
October 10, 2013
Filing Date:
March 05, 2013
Export Citation:
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Assignee:
NISSAN MOTOR (JP)
International Classes:
F16H61/02; F16H59/50; F16H59/66
Foreign References:
JP2005076673A2005-03-24
JP2011105202A2011-06-02
JPH11182665A1999-07-06
JPH0681932A1994-03-22
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
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