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Class Information
Number: 477/149
Name: Interrelated power delivery controls, including engine control > Transmission control > Transmission controlled by engine > By input manifold pressure or engine fuel control > Servo motor timing > Downshift > Electric valve control
Description: Subject matter wherein control of fluid pressure to or from said chamber is by means of an electrically operated valve.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8543299 Control device for automatic transmission Sep. 24, 2013
8538646 Control device for vehicular automatic transmission Sep. 17, 2013
8460158 Transmission control devices and systems, and methods of assembly and use thereof Jun. 11, 2013
8439803 System and method for improved closed throttle downshifts May. 14, 2013
8214117 Driving force controlling apparatus of vehicle Jul. 3, 2012
7247126 Method and apparatus for shift control of an automatic transmission Jul. 24, 2007
7004872 Control method and device for automatic transmission Feb. 28, 2006
6843756 Downshift control apparatus of vehicular automatic transmission, and control method thereof Jan. 18, 2005
6835164 Shift-control method for a vehicular automatic transmission Dec. 28, 2004
6832147 Method and apparatus for controlling a vehicle with a gear-shift transmission Dec. 14, 2004
6793602 Automatic transmission control device and control method Sep. 21, 2004
6508741 Hydraulic control system for automatic transmissions Jan. 21, 2003
6302822 Hydraulic control system of automatic transmission Oct. 16, 2001
6287238 Forced downshift control method for automatic transmission Sep. 11, 2001
6277051 Method for controlling manual downshifting in an automatic transmission Aug. 21, 2001
6264580 Control system for automatic transmission Jul. 24, 2001
6193630 Slip-based shift control system Feb. 27, 2001
6149548 Element overlap control for an automatic transmission Nov. 21, 2000
6132334 Control system for automatic transmission Oct. 17, 2000
6042506 Automatic transmission control having variable fluid pressure decreasing rate at gear shifting Mar. 28, 2000
6010428 Gearshift control apparatus for automatic transmission Jan. 4, 2000
6007457 Pressure control for a 4-3 downshift and a shift from neutral Dec. 28, 1999
5971889 Solenoid self-cleaning pressure valve for automatic vehicle transmission Oct. 26, 1999
5957809 Hydraulic control system for automatic transmissions to improve shift quality Sep. 28, 1999
5911648 Automatic transmission control method including shifting aberration regulating phase Jun. 15, 1999
5848951 Control system of a downshift by an automatic transmission gear and method for the same Dec. 15, 1998
5846163 Shift control apparatus in vehicle automatic transmission Dec. 8, 1998
5842951 Speed change control system for automatic transmission Dec. 1, 1998
5810693 Automatic control system for automobiles Sep. 22, 1998
5800309 Hydraulic control device for automatic transmission Sep. 1, 1998
5795265 Process for controlling an automatic transmission Aug. 18, 1998
5778331 Kickdown delay in cruise control for automatic transmission Jul. 7, 1998
5769754 Kickdown control method for automatic transmission Jun. 23, 1998
5722913 Process for controlling an automatic gearbox Mar. 3, 1998
5707318 Automatic transmission control device Jan. 13, 1998
5571060 Process for correcting the shifting quality of an automatic transmission Nov. 5, 1996
5551931 Method of and system for gear shift controlling for an automatic transmission Sep. 3, 1996
5468198 Method of controlling coastdown and coastdown/tip-in in an automatic transmission Nov. 21, 1995
5449330 Epicyclic change-speed gearbox automatic gear-changing arrangement and method Sep. 12, 1995
5431604 Control system for automatic transmission Jul. 11, 1995
5401219 Oil pressure control system for automatic transmission Mar. 28, 1995
5383825 Electronic shift controller for a multiple ratio automotive transmission Jan. 24, 1995
5319998 Method for downshifting of automatic transmission with discrimination of magnitude of need therefor Jun. 14, 1994
5113722 Timing control during downshift to engine braking range May. 19, 1992
5113343 Sequenced control of double transition powered downshifting in an automatic transmission May. 12, 1992
5111717 Closed loop downshift quality control for an automatic transmisson May. 12, 1992
5094130 Shift control system for automatic power transmission with feature of suppression of shift shock during 4-2 downshift Mar. 10, 1992
5092199 Hydraulic control apparatus for automatic transmissions Mar. 3, 1992
5085105 Downshift control for automatic transmission Feb. 4, 1992
5070747 Adaptive powered downshift control of an automatic transmission Dec. 10, 1991

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