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Title:
AUTOMATIC TRANSMISSION AND CONNECTION METHOD FOR LOCK-UP CLUTCH
Document Type and Number:
Japanese Patent JP2012202540
Kind Code:
A
Abstract:

To suppress shocks occurring when locking up a lock-up clutch.

When a locking-up condition comes in effect while a coasting state is kept under an off-accelerator and locking-up of the lock-up clutch is released, a predetermined engagement threshold Non as a value being smaller as a gearshift step G shifts to a lower speed side as a rotation speed difference between engine rotation speed Ne generating no shocks in locking-up of the lock-up clutch and input shaft rotation speed Nin is set according to gearshift steps G (S100), and locking-up control starts when a rotation speed difference ΔN becomes the engagement threshold Non or below (S150). Thus, the shocks generated upon locking-up the lock-up clutch at any gearshift steps can be suppressed.


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Inventors:
YAMADA ATSUSHI
HASHIZUME MAKOTO
ARAKI SHOICHIRO
MORIYAMA EIJI
TSUZUKI SHINYA
Application Number:
JP2011070493A
Publication Date:
October 22, 2012
Filing Date:
March 28, 2011
Export Citation:
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Assignee:
AISIN AW CO
International Classes:
F16H61/14
Domestic Patent References:
JP2001304003A2001-10-31
JPH11236966A1999-08-31
JPH11294575A1999-10-29
JP2006234017A2006-09-07
JP2001304003A2001-10-31
Attorney, Agent or Firm:
Aitec International Patent Office



 
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