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Patent Searching and Data


Title:
SHIFT CONTROLLER OF CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
Japanese Patent JP2006070943
Kind Code:
A
Abstract:

To provide a shift controller of a continuously variable transmission capable of properly calculating and displaying a gear ratio for display corresponding to an actual gear ratio in the entire part of an operating range.

This shift controller can set a known shift stage gear ratio corresponding to the gear ratio for display beforehand and an unknown shift stage gear ratio not corresponding to the gear ratio for display beforehand. The shift controller allocates the gear ratio for display for the unknown shift stage gear ratio as a value between the gear ratios for display corresponding to the known shift stage gear ratio on the high speed stage side and the low speed stage side by using a relative relation of an input side rotational speed at the known shift stage gear ratio on the high speed side where an output side rotational speeds at the unknown shift stage gear ratio are the same and an input side rotational speed is low to an input side rotational speed at the known shift stage gear ratio on the low speed stage side where the output side rotational speeds are the same and the input side rotational speed is large. In this case, the shift controller comprises gear ratio calculation means (S10, S11) for display adopting the input side rotational speed not limited by the upper limit nor lower limit.


Inventors:
URAGAMI YOSHIO
HOSHIYA KAZUMI
ITO YOSHIO
KANZAKI KENTARO
Application Number:
JP2004000252642
Publication Date:
March 16, 2006
Filing Date:
August 31, 2004
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H61/02; F16H9/00; F16H59/40
Attorney, Agent or Firm:
渡辺 丈夫