Speed stage shifting of automatic transmission by composite cont

Details Speed stage shifting of automatic transmission by composite cont Speed stage shifting of automatic transmission by composite cont

1994-06-09

1995-12-12

Chin, Gary

Boots, shoes, and leggings

73866, 477 45, 477 49, 477908, 477161, 477109, 477122, 477154, 192 486, 192 4892, 192103C, 475120, 74335, 74336R, B60K 3100

Patent

active

054755956

ABSTRACT:
An automatic transmission of a vehicle including a speed change gear mechanism including rotary members such as gears and gear carriers and hydraulically operated friction engaging means and adapted to provide various speed stages according to selective engagement and disengagement of the friction engaging means is controlled by such steps as detecting rotation speed of at least one of the rotary members during a shifting between the speed stages, changing hydraulic pressure of at least one of the friction engaging means during a first phase of the speed stage shifting so as to make the rotation speed of the one rotary member follow a first change performance curve calculated according to a first feedback control program, and changing the hydraulic pressure of the one friction engaging means during a second phase of the speed stage shifting so as to make the rotation speed of the one rotary member follow a second change performance curve calculated according to a second feedback control program in continuity to the first change performance curve.

REFERENCES:
patent: 3956947 (1976-05-01), Leising et al.
patent: 4622866 (1986-11-01), Ito et al.
patent: 4688450 (1987-08-01), Hayashi et al.
patent: 4690017 (1987-09-01), Tanaguchi et al.
patent: 4727772 (1988-03-01), Sumiya et al.
patent: 4967355 (1990-10-01), Iwatsuki et al.
patent: 4995284 (1991-02-01), Takada et al.
patent: 5042323 (1991-08-01), Murano et al.
patent: 5191527 (1993-03-01), Asahara et al.

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