Automatic transmission and method for determining hydraulic...

Interrelated power delivery controls – including engine control – Transmission control – Including fluid drive

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C477S062000, C475S127000

Reexamination Certificate

active

07090614

ABSTRACT:
An automatic transmission includes a plurality of frictional engagement elements for constructing plural shift stages with combinations of engagement and disengagement thereof, a control portion for controlling the engagement and the disengagement of the frictional engagement elements, a switching device switching to a learning mode for learning a precharge time, and a precharge time determination device. The precharge time determination device transits the frictional engagement elements to an engagement side by maintaining the hydraulic pressure for determining the precharge time at a first precharge pressure while maintaining input shaft rotational speed at the learning mode at a vehicle stop state. A first precharge time defined from a start of maintaining the first precharge pressure until variation of an input value assumes significant is obtained. And a second precharge time at a second precharge pressure is obtained to be set for learning by a predetermined formula.

REFERENCES:
patent: 5385511 (1995-01-01), Iizuka
patent: 6623404 (2003-09-01), Saito
patent: 7001299 (2006-02-01), Takagi et al.
patent: 10-68462 (1998-03-01), None
patent: 10-96466 (1998-04-01), None
patent: 2004286183 (2004-10-01), None
patent: 2005036875 (2005-02-01), None
patent: 2005106131 (2005-04-01), None
patent: 2005233372 (2005-09-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Automatic transmission and method for determining hydraulic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic transmission and method for determining hydraulic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic transmission and method for determining hydraulic... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3661087

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.