Hydraulic control method for an automatic transmission for...

Details Hydraulic control method for an automatic transmission for... Hydraulic control method for an automatic transmission for...

2007-09-04

2007-09-04

Pang, Roger L. (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Control by sensed ambient condition, pattern indicia,...

C701S056000, C477S177000

Reexamination Certificate

active

10991213

ABSTRACT:
A duty jumping amount at an actual shift-begin point (SB point) during static shifting is calculated dependent on an automatic transmission fluid temperature and a turbine torque. Therefore, an adjustment of hydraulic pressure supplied to an on-coming clutch at the SB point is optimized, and thereby a shift feel of an automatic transmission may be improved.

REFERENCES:
patent: 5468198 (1995-11-01), Holbrook et al.
patent: 5680794 (1997-10-01), Wake
patent: 5697864 (1997-12-01), Watanabe
patent: 5833573 (1998-11-01), Inuzuka et al.
patent: 6645121 (2003-11-01), Wu et al.
patent: 2003/0233185 (2003-12-01), Takebayashi et al.
patent: 69526844 (2002-09-01), None

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