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Title:
METHOD AND DEVICE FOR CONTROLLING AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2008190701
Kind Code:
A
Abstract:

To solve problem of a conventional automobile on which a single clutch automatic MT, a twin clutch automatic MT, a torque assisted automatic MT with a drag torque, etc. are mounted wherein the drag torque may act thereon as a blocking action (blocking force) when gears are disengaged or engaged.

In this method of controlling a gear transmission having pairs of gears capable of transmitting torque from the input shaft of the transmission to the output shaft of the transmission, engagement transmission mechanisms for changing a torque transmission path from the pairs of gears to the other pairs of gears, and at least one transmission torque variable mechanism between the output shaft of a motor and the output shaft of the transmission, the transmission has a means for obtaining a drag torque by estimation or detection. When the connection between the pair of gears and the engagement transmission mechanism is changed from a first connection to a second connection, a control amount for changing the connection is corrected according to the drag torque.


Inventors:
SHISHIDO KENTARO
YOSHIDA YOSHIYUKI
MATSUMURA TETSUO
FUJIMOTO KINYA
KIYOMIYA DAIJI
Application Number:
JP2007000028662
Publication Date:
August 21, 2008
Filing Date:
February 08, 2007
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
F16H61/04; F16H59/70; F16H61/682; F16H61/688
Domestic Patent References:
JP2004218694A2004-08-05
JP2000234654A2000-08-29
JP2001295898A2001-10-26
JP2703169A
JPH10318361A1998-12-04
JP2003269592A2003-09-25
JP2004322702A2004-11-18
Attorney, Agent or Firm:
井上 学