Method of controlling automatic transmission with cross referenc

Details Method of controlling automatic transmission with cross referenc Method of controlling automatic transmission with cross referenc

1990-12-04

1993-03-02

Lall, Parshotam S.

Boots, shoes, and leggings

73866, B60K 4106

Patent

active

051915278

ABSTRACT:
In an automatic transmission in a vehicle having a tandem connection of a first gear unit such as lower and upper gear stages and a second gear unit such as having three gear stages so that selective engagement and disengagement of clutches and brakes in each gear unit selectively provide six gear states, a certain clutch or brake of the first gear unit is controlled in reference to a difference between certain target engaged/disengaged condition and actual engaged/disengaged condition of itself in setting up a certain gear stage in the first gear unit as well as to difference between certain target engaged/disengaged condition and actual engaged/disengaged condition of (and further, though optionally, a signal for controlling) a certain clutch or brake of the second gear unit in setting up a certain gear stage in the second gear unit.

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patent: 4956776 (1990-09-01), Carre
patent: 4967355 (1990-10-01), Iwatsuki et al.

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