Device for controlling an automatic automotive transmission

Details Device for controlling an automatic automotive transmission Device for controlling an automatic automotive transmission

1991-09-30

1993-12-07

Braun, Leslie A.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74863, B60K 4106

Patent

active

052674924

ABSTRACT:
In an automatic automotive transmission system having a torque converter and a gear transmission unit, the gear transmission unit is shifted from one speed stage to another normally according to current vehicle speed and engine load, but is upshifted from one speed stage to a subsequent speed stage according to a vehicle speed and a stored value of the engine load at the time of the preceding upshift so that a series of upshifts may be carried out at regular intervals, and the vehicle operator may accomplish a smooth acceleration of the vehicle substantially without any efforts even when the engine load wavers from the level at the time when the preceding upshift took place.

REFERENCES:
patent: 4698763 (1987-10-01), Smyth
patent: 4712452 (1987-12-01), Hibino et al.
patent: 4718309 (1988-01-01), Moriya
patent: 4930374 (1990-06-01), Simonyi et al.
patent: 4977797 (1990-12-01), Aoki et al.
patent: 4996893 (1991-03-01), Nakamura et al.
patent: 5051905 (1991-09-01), Yoshida

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