Interrelated power delivery controls – including engine control – Transmission control – Engine controlled by transmission
Reexamination Certificate
2006-07-21
2009-06-09
Le, David D. (Department: 3681)
Interrelated power delivery controls, including engine control
Transmission control
Engine controlled by transmission
C477S107000, C477S109000, C701S054000
Reexamination Certificate
active
07544149
ABSTRACT:
The invention relates to a shift control apparatus for an automatic transmission that executes a torque reduction control when the transmission downshifts in response to a downshift determination made during an upshift. The shift control apparatus includes a multiple shift execution unit that starts the downshift in response to the downshift determination, and a torque reduction control execution unit that determines whether the rotational speed of the input member is at least a control start-up rotational speed, after the downshift operation starts, and executes a torque reduction control of the power source when the rotational speed of the input member is increased to at least the control start-up rotational speed. This allows the rotational speed of the input shaft to be quickly changed to the appropriate synchronous rotational speed. Thus, the desired driving force is provided upon completion of the downshift without overspeeding the engine.
REFERENCES:
patent: 5882277 (1999-03-01), Iizuka
patent: 6254508 (2001-07-01), Kojima et al.
patent: 199 51 983 (2000-05-01), None
patent: 10 2004 059 414 (2005-07-01), None
patent: 5-180319 (1993-07-01), None
patent: 8-244499 (1996-09-01), None
patent: 9-291835 (1997-11-01), None
patent: 2001-124193 (2001-05-01), None
patent: 2002-30951 (2002-01-01), None
patent: 2002-168332 (2002-06-01), None
patent: 2005-48781 (2005-02-01), None
patent: 2002-0046735 (2002-06-01), None
patent: 03-0354037 (2002-09-01), None
patent: 10-2004-0020027 (2004-03-01), None
patent: 10-0579259 (2006-05-01), None
Ayabe Atsushi
Ishihara Hisashi
Sugimura Toshio
Suzuki Toshinari
Takaie Yosuke
Le David D.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toyota Jidosha & Kabushiki Kaisha
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