Title:
METHOD AND SYSTEM FOR AUTOMATED CONTROL OF TRANSMISSION RATIO CHANGE
Document Type and Number:
WIPO Patent Application WO/2010/151663
Kind Code:
A3
Abstract:
The present invention relates to a method and system for automated control of transmission ratio change which balances the requirements for power with energy efficiency. A plurality of sensors detect environmental conditions of a vehicle. An environmental conditions analysis unit analyzes the environmental conditions to determine whether the detected environmental conditions indicate a likelihood of a transmission ratio increase. When the detected environmental conditions indicate the likelihood of the transmission ratio increase, an automatic transmission changes in operation from a normal state to a prepared state. However, after a predetermined amount of time, the automatic transmission changes from the prepared state back to the normal state when there is no user indication that the transmission ratio should be increased.
Inventors:
AHN SAMUEL S (US)
Application Number:
PCT/US2010/039813
Publication Date:
April 21, 2011
Filing Date:
June 24, 2010
Export Citation:
Assignee:
TOYOTA ENG & MFG NORTH AMERICA (US)
AHN SAMUEL S (US)
AHN SAMUEL S (US)
International Classes:
F16H61/04; F16H59/36; F16H61/00
Foreign References:
| JPH0271163U | 1990-05-30 | |||
| JP2001235016A | 2001-08-31 | |||
| JPH0942444A | 1997-02-14 | |||
| JPH06270713A | 1994-09-27 | |||
| US4601680A | 1986-07-22 |
Attorney, Agent or Firm:
VAKIL, Ketan, S. (600 Anton BoulevardSuite 140, Costa Mesa California, US)
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