Improved apparatus for determining whether gear-shifting in an a

Details Improved apparatus for determining whether gear-shifting in an a Improved apparatus for determining whether gear-shifting in an a

1985-12-12

1988-11-08

Lall, Parshotam S.

Boots, shoes, and leggings

192 052, 74752D, 74867, B60K 4108, G06F 1520

Patent

active

047837438

ABSTRACT:
In an automatic transmission control system, completion of gear-shifting is detected on the basis of both the rate of change in rotational speed of the output shaft of the torque converter and the rotational speed at which the output shaft of the torque converter is expected to rotate. That is, a rotational speed range within which the rotational speed of the output shaft of the torque converter is expected to fall upon completion of the gear-shifting is determined taking into account the rotational speed of the output shaft of the torque converter upon initiation of the gear-shifting and the gear ratio, and it is determined that the gear-shifting is completed when the rotational speed of the output shaft of the torque converter falls within the predetermined rotational speed range and the rate of change in rotational speed of the output shaft of the torque converter is reduced below a predetermined value.

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patent: 4495576 (1985-01-01), Ito
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