Method for reducing shift shock of automatic vehicle...

Details Method for reducing shift shock of automatic vehicle... Method for reducing shift shock of automatic vehicle...

2007-04-24

2007-04-24

Bonck, Rodney H. (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

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

C477S102000, C477S107000, C701S054000

Reexamination Certificate

active

11023703

ABSTRACT:
The method for reducing shift shock of an automatic transmission includes: detecting a current power-on upshift state; and performing a first engine torque reduction control according to an engine torque or a throttle valve opening position at an instance of a shift begin point, if the current power-on upshift state is a normal power-on upshift state. The method also includes performing a second engine torque reduction control according to an engine torque or a throttle valve opening position even after the shift begin point, if there is a power change during a power-on upshift or a current upshift is a shift during a shift.

REFERENCES:
patent: 5072630 (1991-12-01), Kikuchi et al.
patent: 5810694 (1998-09-01), Kamada et al.
patent: 6632157 (2003-10-01), Gierling et al.
patent: 2003-184594 (2003-07-01), None
patent: 10-2003-0044097 (2003-06-01), None

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