Title:
TRANSMISSION FOR VEHICLE AND METHOD OF SETTING GEAR RATIO
Document Type and Number:
Japanese Patent JP2009250376
Kind Code:
A
Abstract:
To provide a transmission that matches sensitivity of a driver for comfortable shifting.
In this transmission for vehicle, a gear ratio between the highest speed stage and the lowest speed stage is set based on power performance of a vehicle, and a gear ratio of shift stages between the highest speed stage and the lowest speed stage is set based on a logarithm ratio of the driving force obtained in each shift stage. Shifting that matches feeling or sensitivity of a driver or occupants can be obtained by setting a gear ratio with this method.
Inventors:
YAMAMOTO KATSUHIKO
SATO HIROBUMI
SATO HIROBUMI
Application Number:
JP2008100384A
Publication Date:
October 29, 2009
Filing Date:
April 08, 2008
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H3/00
Attorney, Agent or Firm:
Watanabe strong