Apparatus and method for controlling speed change of a vehicle a

Details Apparatus and method for controlling speed change of a vehicle a Apparatus and method for controlling speed change of a vehicle a

1998-03-13

2000-08-01

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

701 65, 701 95, 701 96, 477120, 477125, G06F 1700, G06F 1900

Patent

active

060980028

ABSTRACT:
With a speed change control wherein a speed change step is determined corresponding to the gradient of a road surface on which a vehicle is travelling, an upshift requirement is output at the time of a downslope, based on the gradient being gentle, and a reference acceleration and a reference engine load are set corresponding to vehicle speed, speed change step, and gradient. Then, only when an actual acceleration is greater than or equal to the reference acceleration, and an actual engine load is greater than or equal to the reference engine load, is upshift executed based on the upshift requirement, and for other than the above conditions, the upshift requirement is cancelled.

REFERENCES:
patent: 4648291 (1987-03-01), Klatt et al.
patent: 5038880 (1991-08-01), Matsuoka et al.
patent: 5544053 (1996-08-01), Nakashima
patent: 5549519 (1996-08-01), Seidel et al.
patent: 5611753 (1997-03-01), Kondo et al.
patent: 5618243 (1997-04-01), Kondo et al.

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