Control of a vehicle automatic transmission

Details Control of a vehicle automatic transmission Control of a vehicle automatic transmission

1986-10-30

1987-12-01

Braun, Leslie

Machine element or mechanism

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

Preselected indexed position

74866, B06K 4118, B06K 4116

Patent

active

047095962

ABSTRACT:
A vehicle automatic transmission having a torque converter and a multiple stage transmission gear mechanism connected with the torque converter. The gear stage of the gear mechanism is selected in accordance with the vehicle operating condition. The transmission includes friction members. One of the friction members is engaged for a higher gear stage and disengaged for a lower gear stage whereas the other is disengaged for the higher gear stage and engaged for the lower gear stage. In shifting down from the higher gear stage to the lower gear stage, the other friction member is engaged after a predetermined time from the disengagement of the one friction member.

REFERENCES:
patent: 4188839 (1980-02-01), Kubo et al.
patent: 4334441 (1982-06-01), Iwanaga et al.
patent: 4351206 (1982-09-01), Lemieux et al.
patent: 4476747 (1984-10-01), Kawamoto
patent: 4531432 (1985-07-01), Inagaki et al.
patent: 4662247 (1987-05-01), Sotoyama et al.

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